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Author SHA1 Message Date
Linus Torvalds
61ea647ed1 NFSD 6.10 Release Notes 
This is a light release containing mostly optimizations, code clean-
 ups, and minor bug fixes. This development cycle has focused on non-
 upstream kernel work:
 
 1. Continuing to build upstream CI for NFSD, based on kdevops
 2. Backporting NFSD filecache-related fixes to selected LTS kernels
 
 One notable new feature in v6.10 NFSD is the addition of a new
 netlink protocol dedicated to configuring NFSD. A new user space
 tool, nfsdctl, is to be added to nfs-utils. Lots more to come here.
 
 As always I am very grateful to NFSD contributors, reviewers,
 testers, and bug reporters who participated during this cycle.
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Merge tag 'nfsd-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "This is a light release containing mostly optimizations, code clean-
  ups, and minor bug fixes. This development cycle has focused on non-
  upstream kernel work:

   1. Continuing to build upstream CI for NFSD, based on kdevops

   2. Backporting NFSD filecache-related fixes to selected LTS kernels

  One notable new feature in v6.10 NFSD is the addition of a new netlink
  protocol dedicated to configuring NFSD. A new user space tool,
  nfsdctl, is to be added to nfs-utils. Lots more to come here.

  As always I am very grateful to NFSD contributors, reviewers, testers,
  and bug reporters who participated during this cycle"

* tag 'nfsd-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (29 commits)
  NFSD: Force all NFSv4.2 COPY requests to be synchronous
  SUNRPC: Fix gss_free_in_token_pages()
  NFS/knfsd: Remove the invalid NFS error 'NFSERR_OPNOTSUPP'
  knfsd: LOOKUP can return an illegal error value
  nfsd: set security label during create operations
  NFSD: Add COPY status code to OFFLOAD_STATUS response
  NFSD: Record status of async copy operation in struct nfsd4_copy
  SUNRPC: Remove comment for sp_lock
  NFSD: add listener-{set,get} netlink command
  SUNRPC: add a new svc_find_listener helper
  SUNRPC: introduce svc_xprt_create_from_sa utility routine
  NFSD: add write_version to netlink command
  NFSD: convert write_threads to netlink command
  NFSD: allow callers to pass in scope string to nfsd_svc
  NFSD: move nfsd_mutex handling into nfsd_svc callers
  lockd: host: Remove unnecessary statements＇host = NULL;＇
  nfsd: don't create nfsv4recoverydir in nfsdfs when not used.
  nfsd: optimise recalculate_deny_mode() for a common case
  nfsd: add tracepoint in mark_client_expired_locked
  nfsd: new tracepoint for check_slot_seqid
  ...
 2024-05-18 14:04:20 -07:00
Linus Torvalds
ea5f6ad9ad platform-drivers-x86 for v6.10-1 
Highlights:
  - New drivers/platform/arm64 directory for arm64 embedded-controller drivers
  - New drivers for:
    - Acer Aspire 1 embedded controllers (for arm64 models)
    - ACPI quickstart PNP0C32 buttons
    - Dell All-In-One backlight support (dell-uart-backlight)
    - Lenovo WMI camera buttons
    - Lenovo Yoga Tablet 2 Pro 1380F/L fast charging
    - MeeGoPad ANX7428 Type-C Cross Switch (power sequencing only)
    - MSI WMI sensors (fan speed sensors only for now)
  - Asus WMI:
    - 2024 ROG Mini-LED support
    - MCU powersave support
    - Vivobook GPU MUX support
    - Misc. other improvements
  - Ideapad laptop:
    - Export FnLock LED as LED class device
    - Switch platform profiles using thermal management key
  - Intel drivers:
    - IFS: various improvements
    - PMC: Lunar Lake support
    - SDSI: various improvements
    - TPMI/ISST: various improvements
    - tools: intel-speed-select: various improvements
  - MS Surface drivers:
    - Fan profile switching support
    - Surface Pro thermal sensors support
  - ThinkPad ACPI:
    - Reworked hotkey support to use sparse keymaps
    - Add support for new trackpoint-doubletap, Fn+N and Fn+G hotkeys
  - WMI core:
    - New WMI driver development guide
  - x86 Android tablets:
    - Lenovo Yoga Tablet 2 Pro 1380F/L support
    - Xiaomi MiPad 2 status LED and bezel touch buttons backlight support
  - Miscellaneous cleanups / fixes / improvements
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI:
  -  platform-profile: add platform_profile_cycle()
 
 Add ACPI quickstart button (PNP0C32) driver:
  - Add ACPI quickstart button (PNP0C32) driver
 
 Add lenovo-yoga-tab2-pro-1380-fastcharger driver:
  - Add lenovo-yoga-tab2-pro-1380-fastcharger driver
 
 Add new Dell UART backlight driver:
  - Add new Dell UART backlight driver
 
 Add lenovo WMI camera button driver:
  - Add lenovo WMI camera button driver
 
 Add new MeeGoPad ANX7428 Type-C Cross Switch driver:
  - Add new MeeGoPad ANX7428 Type-C Cross Switch driver
 
 ISST:
  -  Support SST-BF and SST-TF per level
  -  Add missing MODULE_DESCRIPTION
  -  Add dev_fmt
  -  Use in_range() to check package ID validity
  -  Support partitioned systems
  -  Shorten the assignments for power_domain_info
  -  Use local variable for auxdev->dev
 
 MAINTAINERS:
  -  drop Daniel Oliveira Nascimento
 
 arm64:
  -  dts: qcom: acer-aspire1: Add embedded controller
 
 asus-laptop:
  -  Use sysfs_emit() and sysfs_emit_at() to replace sprintf()
 
 asus-wmi:
  -  cleanup main struct to avoid some holes
  -  Add support for MCU powersave
  -  ROG Ally increase wait time, allow MCU powersave
  -  adjust formatting of ppt-<name>() functions
  -  store a min default for ppt options
  -  support toggling POST sound
  -  add support variant of TUF RGB
  -  add support for Vivobook GPU MUX
  -  add support for 2024 ROG Mini-LED
  -  use sysfs_emit() instead of sprintf()
 
 classmate-laptop:
  -  Add missing MODULE_DESCRIPTION()
 
 devm-helpers:
  -  Fix a misspelled cancellation in the comments
 
 dt-bindings:
  -  leds: Add LED_FUNCTION_FNLOCK
  -  platform: Add Acer Aspire 1 EC
 
 hp-wmi:
  -  use sysfs_emit() instead of sprintf()
 
 huawei-wmi:
  -  use sysfs_emit() instead of sprintf()
 
 ideapad-laptop:
  -  switch platform profiles using thermal management key
  -  add FnLock LED class device
  -  add fn_lock_get/set functions
 
 intel-vbtn:
  -  Log event code on unexpected button events
 
 intel/pmc:
  -  Enable S0ix blocker show in Lunar Lake
  -  Add support to show S0ix blocker counter
  -  Update LNL signal status map
 
 msi-laptop:
  -  Use sysfs_emit() to replace sprintf()
 
 p2sb:
  -  Don't init until unassigned resources have been assigned
  -  Make p2sb_get_devfn() return void
 
 platform:
  -  arm64: Add Acer Aspire 1 embedded controller driver
  -  Add ARM64 platform directory
 
 platform/surface:
  -  aggregator: Log critical errors during SAM probing
  -  aggregator_registry: Add support for thermal sensors on the Surface Pro 9
  -  platform_profile: add fan profile switching
 
 platform/x86/amd:
  -  pmc: Add new ACPI ID AMDI000B
  -  pmf: Add new ACPI ID AMDI0105
 
 platform/x86/amd/hsmp:
  -  switch to use device_add_groups()
 
 platform/x86/amd/pmc:
  -  Fix implicit declaration error on i386
  -  Add AMD MP2 STB functionality
 
 platform/x86/fujitsu-laptop:
  -  Replace sprintf() with sysfs_emit()
 
 platform/x86/intel-uncore-freq:
  -  Don't present root domain on error
 
 platform/x86/intel/ifs:
  -  Disable irq during one load stage
  -  trace: display batch num in hex
  -  Classify error scenarios correctly
 
 platform/x86/intel/pmc:
  -  Fix PCH names in comments
 
 platform/x86/intel/sdsi:
  -  Add attribute to read the current meter state
  -  Add in-band BIOS lock support
  -  Combine read and write mailbox flows
  -  Set message size during writes
 
 platform/x86/intel/tpmi:
  -  Add additional TPMI header fields
  -  Align comments in kernel-doc
  -  Check major version change for TPMI Information
  -  Handle error from tpmi_process_info()
 
 quickstart:
  -  Fix race condition when reporting input event
  -  fix Kconfig selects
  -  Miscellaneous improvements
 
 samsung-laptop:
  -  Use sysfs_emit() to replace the old interface sprintf()
 
 think-lmi:
  -  Convert container_of() macros to static inline
 
 thinkpad_acpi:
  -  Use false to set acpi_send_ev to false
  -  Support hotkey to disable trackpoint doubletap
  -  Support for system debug info hotkey
  -  Support for trackpoint doubletap
  -  Simplify known_ev handling
  -  Add mappings for adaptive kbd clipping-tool and cloud keys
  -  Switch to using sparse-keymap helpers
  -  Drop KEY_RESERVED special handling
  -  Use correct keycodes for volume and brightness keys
  -  Change hotkey_reserved_mask initialization
  -  Do not send ACPI netlink events for unknown hotkeys
  -  Move tpacpi_driver_event() call to tpacpi_input_send_key()
  -  Move hkey > scancode mapping to tpacpi_input_send_key()
  -  Drop tpacpi_input_send_key_masked() and hotkey_driver_event()
  -  Always call tpacpi_driver_event() for hotkeys
  -  Move hotkey_user_mask check to tpacpi_input_send_key()
  -  Move special original hotkeys handling out of switch-case
  -  Move adaptive kbd event handling to tpacpi_driver_event()
  -  Make tpacpi_driver_event() return if it handled the event
  -  Do hkey to scancode translation later
  -  Use tpacpi_input_send_key() in adaptive kbd code
  -  Drop ignore_acpi_ev
  -  Drop setting send_/ignore_acpi_ev defaults twice
  -  Provide hotkey_poll_stop_sync() dummy
  -  Take hotkey_mutex during hotkey_exit()
  -  change sprintf() to sysfs_emit()
  -  use platform_profile_cycle()
 
 tools arch x86:
  -  Add dell-uart-backlight-emulator
 
 tools/arch/x86/intel_sdsi:
  -  Add current meter support
  -  Simplify ascii printing
  -  Fix meter_certificate decoding
  -  Fix meter_show display
  -  Fix maximum meter bundle length
 
 tools/power/x86/intel-speed-select:
  -  v1.19 release
  -  Display CPU as None for -1
  -  SST BF/TF support per level
  -  Increase number of CPUs displayed
  -  Present all TRL levels for turbo-freq
  -  Fix display for unsupported levels
  -  Support multiple dies
  -  Increase die count
 
 toshiba_acpi:
  -  Add quirk for buttons on Z830
 
 uv_sysfs:
  -  use sysfs_emit() instead of sprintf()
 
 wmi:
  -  Add MSI WMI Platform driver
  -  Add driver development guide
  -  Mark simple WMI drivers as legacy-free
  -  Avoid returning AE_OK upon unknown error
  -  Support reading/writing 16 bit EC values
 
 x86-android-tablets:
  -  Create LED device for Xiaomi Pad 2 bottom bezel touch buttons
  -  Xiaomi pad2 RGB LED fwnode updates
  -  Pass struct device to init()
  -  Add Lenovo Yoga Tablet 2 Pro 1380F/L data
  -  Unregister devices in reverse order
  -  Add swnode for Xiaomi pad2 indicator LED
  -  Use GPIO_LOOKUP() macro
 
 xiaomi-wmi:
  -  Drop unnecessary NULL checks
  -  Fix race condition when reporting key events
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Merge tag 'platform-drivers-x86-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:

 - New drivers/platform/arm64 directory for arm64 embedded-controller
   drivers

 - New drivers:
    - Acer Aspire 1 embedded controllers (for arm64 models)
    - ACPI quickstart PNP0C32 buttons
    - Dell All-In-One backlight support (dell-uart-backlight)
    - Lenovo WMI camera buttons
    - Lenovo Yoga Tablet 2 Pro 1380F/L fast charging
    - MeeGoPad ANX7428 Type-C Cross Switch (power sequencing only)
    - MSI WMI sensors (fan speed sensors only for now)

 - Asus WMI:
    - 2024 ROG Mini-LED support
    - MCU powersave support
    - Vivobook GPU MUX support
    - Misc. other improvements

 - Ideapad laptop:
    - Export FnLock LED as LED class device
    - Switch platform profiles using thermal management key

 - Intel drivers:
    - IFS: various improvements
    - PMC: Lunar Lake support
    - SDSI: various improvements
    - TPMI/ISST: various improvements
    - tools: intel-speed-select: various improvements

 - MS Surface drivers:
    - Fan profile switching support
    - Surface Pro thermal sensors support

 - ThinkPad ACPI:
    - Reworked hotkey support to use sparse keymaps
    - Add support for new trackpoint-doubletap, Fn+N and Fn+G hotkeys

 - WMI core:
    - New WMI driver development guide

 - x86 Android tablets:
    - Lenovo Yoga Tablet 2 Pro 1380F/L support
    - Xiaomi MiPad 2 status LED and bezel touch buttons backlight
      support

 - Miscellaneous cleanups / fixes / improvements

* tag 'platform-drivers-x86-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (128 commits)
  platform/x86: Add new MeeGoPad ANX7428 Type-C Cross Switch driver
  devm-helpers: Fix a misspelled cancellation in the comments
  tools arch x86: Add dell-uart-backlight-emulator
  platform/x86: Add new Dell UART backlight driver
  platform/x86: x86-android-tablets: Create LED device for Xiaomi Pad 2 bottom bezel touch buttons
  platform/x86: x86-android-tablets: Xiaomi pad2 RGB LED fwnode updates
  platform/x86: x86-android-tablets: Pass struct device to init()
  platform/x86/amd: pmc: Add new ACPI ID AMDI000B
  platform/x86/amd: pmf: Add new ACPI ID AMDI0105
  platform/x86: p2sb: Don't init until unassigned resources have been assigned
  platform/surface: aggregator: Log critical errors during SAM probing
  platform/x86: ISST: Support SST-BF and SST-TF per level
  platform/x86/fujitsu-laptop: Replace sprintf() with sysfs_emit()
  tools/power/x86/intel-speed-select: v1.19 release
  tools/power/x86/intel-speed-select: Display CPU as None for -1
  tools/power/x86/intel-speed-select: SST BF/TF support per level
  tools/power/x86/intel-speed-select: Increase number of CPUs displayed
  tools/power/x86/intel-speed-select: Present all TRL levels for turbo-freq
  tools/power/x86/intel-speed-select: Fix display for unsupported levels
  tools/power/x86/intel-speed-select: Support multiple dies
  ...
 2024-05-16 09:14:50 -07:00
Linus Torvalds
3c999d1ae3 workqueue: Changes for v6.10 
- Work items can now be disabled and enabled, and cancel_work_sync() and
   disable_work() can be called form atomic contexts for BH work items. This
   closes feature gap with tasklet and should allow converting all existing
   tasklet users to BH workqueues.
 
 - Improve pool sharing for unbound workqueues with strict affinity.
 
 - Misc changes including doc updates, improved debug annotations and
   cleanups.
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Merge tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:

 - Work items can now be disabled and enabled, and cancel_work_sync()
   and disable_work() can be called form atomic contexts for BH work
   items.

   This closes feature gap with tasklet and should allow converting all
   existing tasklet users to BH workqueues.

 - Improve pool sharing for unbound workqueues with strict affinity.

 - Misc changes including doc updates, improved debug annotations and
   cleanups.

* tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Use "@..." in function comment to describe variable length argument
  workqueue: Add destroy_work_on_stack() in workqueue_softirq_dead()
  workqueue: remove unnecessary import and function in wq_monitor.py
  workqueue: Introduce enable_and_queue_work() convenience function
  workqueue: add function in event of workqueue_activate_work
  workqueue: Cleanup subsys attribute registration
  workqueue: Use list_last_entry() to get the last idle worker
  workqueue: Move attrs->cpumask out of worker_pool's properties when attrs->affn_strict
  workqueue: Use INIT_WORK_ONSTACK in workqueue_softirq_dead()
  workqueue: Allow cancel_work_sync() and disable_work() from atomic contexts on BH work items
  workqueue: Remember whether a work item was on a BH workqueue
  workqueue: Remove WORK_OFFQ_CANCELING
  workqueue: Implement disable/enable for (delayed) work items
  workqueue: Preserve OFFQ bits in cancel[_sync] paths
 2024-05-15 17:32:08 -07:00
Linus Torvalds
de6fef50ea cgroup: Changes for v6.10 
- The locking around cpuset hotplug processing has always been a bit of mess
   which was worked around by making hotplug processing asynchronous. The
   asynchronity isn't great and led to other issues. We tried to make the
   behavior synchronous a while ago but that led to lockdep splats. Waiman
   took another stab at cleaning up and making it synchronous. The patch has
   been in -next for well over a month and there haven't been any complaints,
   so fingers crossed.
 
 - Tracepoints added to help understanding rstat lock contentions.
 
 - A bunch of minor changes - doc updates, code cleanups and selftests.
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Merge tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - The locking around cpuset hotplug processing has always been a bit of
   mess which was worked around by making hotplug processing
   asynchronous. The asynchronity isn't great and led to other issues.

   We tried to make the behavior synchronous a while ago but that led to
   lockdep splats. Waiman took another stab at cleaning up and making it
   synchronous. The patch has been in -next for well over a month and
   there haven't been any complaints, so fingers crossed.

 - Tracepoints added to help understanding rstat lock contentions.

 - A bunch of minor changes - doc updates, code cleanups and selftests.

* tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (24 commits)
  cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints
  selftests/cgroup: Drop define _GNU_SOURCE
  docs: cgroup-v1: Update page cache removal functions
  selftests/cgroup: fix uninitialized variables in test_zswap.c
  selftests/cgroup: cpu_hogger init: use {} instead of {NULL}
  selftests/cgroup: fix clang warnings: uninitialized fd variable
  selftests/cgroup: fix clang build failures for abs() calls
  cgroup/cpuset: Remove outdated comment in sched_partition_write()
  cgroup/cpuset: Fix incorrect top_cpuset flags
  cgroup/cpuset: Avoid clearing CS_SCHED_LOAD_BALANCE twice
  cgroup/cpuset: Statically initialize more members of top_cpuset
  cgroup: Avoid unnecessary looping in cgroup_no_v1()
  cgroup, legacy_freezer: update comment for freezer_css_offline()
  docs, cgroup: add entries for pids to cgroup-v2.rst
  cgroup: don't call cgroup1_pidlist_destroy_all() for v2
  cgroup_freezer: update comment for freezer_css_online()
  cgroup/rstat: desc member cgrp in cgroup_rstat_flush_release
  cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints
  cgroup/pids: Remove superfluous zeroing
  docs: cgroup-v1: Fix description for css_online
  ...
 2024-05-15 17:06:08 -07:00
Linus Torvalds
f4b0c4b508 ARM: 
* Move a lot of state that was previously stored on a per vcpu
   basis into a per-CPU area, because it is only pertinent to the
   host while the vcpu is loaded. This results in better state
   tracking, and a smaller vcpu structure.
 
 * Add full handling of the ERET/ERETAA/ERETAB instructions in
   nested virtualisation. The last two instructions also require
   emulating part of the pointer authentication extension.
   As a result, the trap handling of pointer authentication has
   been greatly simplified.
 
 * Turn the global (and not very scalable) LPI translation cache
   into a per-ITS, scalable cache, making non directly injected
   LPIs much cheaper to make visible to the vcpu.
 
 * A batch of pKVM patches, mostly fixes and cleanups, as the
   upstreaming process seems to be resuming. Fingers crossed!
 
 * Allocate PPIs and SGIs outside of the vcpu structure, allowing
   for smaller EL2 mapping and some flexibility in implementing
   more or less than 32 private IRQs.
 
 * Purge stale mpidr_data if a vcpu is created after the MPIDR
   map has been created.
 
 * Preserve vcpu-specific ID registers across a vcpu reset.
 
 * Various minor cleanups and improvements.
 
 LoongArch:
 
 * Add ParaVirt IPI support.
 
 * Add software breakpoint support.
 
 * Add mmio trace events support.
 
 RISC-V:
 
 * Support guest breakpoints using ebreak
 
 * Introduce per-VCPU mp_state_lock and reset_cntx_lock
 
 * Virtualize SBI PMU snapshot and counter overflow interrupts
 
 * New selftests for SBI PMU and Guest ebreak
 
 * Some preparatory work for both TDX and SNP page fault handling.
   This also cleans up the page fault path, so that the priorities
   of various kinds of fauls (private page, no memory, write
   to read-only slot, etc.) are easier to follow.
 
 x86:
 
 * Minimize amount of time that shadow PTEs remain in the special
   REMOVED_SPTE state.  This is a state where the mmu_lock is held for
   reading but concurrent accesses to the PTE have to spin; shortening
   its use allows other vCPUs to repopulate the zapped region while
   the zapper finishes tearing down the old, defunct page tables.
 
 * Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID field,
   which is defined by hardware but left for software use.  This lets KVM
   communicate its inability to map GPAs that set bits 51:48 on hosts
   without 5-level nested page tables.  Guest firmware is expected to
   use the information when mapping BARs; this avoids that they end up at
   a legal, but unmappable, GPA.
 
 * Fixed a bug where KVM would not reject accesses to MSR that aren't
   supposed to exist given the vCPU model and/or KVM configuration.
 
 * As usual, a bunch of code cleanups.
 
 x86 (AMD):
 
 * Implement a new and improved API to initialize SEV and SEV-ES VMs, which
   will also be extendable to SEV-SNP.  The new API specifies the desired
   encryption in KVM_CREATE_VM and then separately initializes the VM.
   The new API also allows customizing the desired set of VMSA features;
   the features affect the measurement of the VM's initial state, and
   therefore enabling them cannot be done tout court by the hypervisor.
 
   While at it, the new API includes two bugfixes that couldn't be
   applied to the old one without a flag day in userspace or without
   affecting the initial measurement.  When a SEV-ES VM is created with
   the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are
   rejected once the VMSA has been encrypted.  Also, the FPU and AVX
   state will be synchronized and encrypted too.
 
 * Support for GHCB version 2 as applicable to SEV-ES guests.  This, once
   more, is only accessible when using the new KVM_SEV_INIT2 flow for
   initialization of SEV-ES VMs.
 
 x86 (Intel):
 
 * An initial bunch of prerequisite patches for Intel TDX were merged.
   They generally don't do anything interesting.  The only somewhat user
   visible change is a new debugging mode that checks that KVM's MMU
   never triggers a #VE virtualization exception in the guest.
 
 * Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig VM-Exit to
   L1, as per the SDM.
 
 Generic:
 
 * Use vfree() instead of kvfree() for allocations that always use vcalloc()
   or __vcalloc().
 
 * Remove .change_pte() MMU notifier - the changes to non-KVM code are
   small and Andrew Morton asked that I also take those through the KVM
   tree.  The callback was only ever implemented by KVM (which was also the
   original user of MMU notifiers) but it had been nonfunctional ever since
   calls to set_pte_at_notify were wrapped with invalidate_range_start
   and invalidate_range_end... in 2012.
 
 Selftests:
 
 * Enhance the demand paging test to allow for better reporting and stressing
   of UFFD performance.
 
 * Convert the steal time test to generate TAP-friendly output.
 
 * Fix a flaky false positive in the xen_shinfo_test due to comparing elapsed
   time across two different clock domains.
 
 * Skip the MONITOR/MWAIT test if the host doesn't actually support MWAIT.
 
 * Avoid unnecessary use of "sudo" in the NX hugepage test wrapper shell
   script, to play nice with running in a minimal userspace environment.
 
 * Allow skipping the RSEQ test's sanity check that the vCPU was able to
   complete a reasonable number of KVM_RUNs, as the assert can fail on a
   completely valid setup.  If the test is run on a large-ish system that is
   otherwise idle, and the test isn't affined to a low-ish number of CPUs, the
   vCPU task can be repeatedly migrated to CPUs that are in deep sleep states,
   which results in the vCPU having very little net runtime before the next
   migration due to high wakeup latencies.
 
 * Define _GNU_SOURCE for all selftests to fix a warning that was introduced by
   a change to kselftest_harness.h late in the 6.9 cycle, and because forcing
   every test to #define _GNU_SOURCE is painful.
 
 * Provide a global pseudo-RNG instance for all tests, so that library code can
   generate random, but determinstic numbers.
 
 * Use the global pRNG to randomly force emulation of select writes from guest
   code on x86, e.g. to help validate KVM's emulation of locked accesses.
 
 * Allocate and initialize x86's GDT, IDT, TSS, segments, and default exception
   handlers at VM creation, instead of forcing tests to manually trigger the
   related setup.
 
 Documentation:
 
 * Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "ARM:

   - Move a lot of state that was previously stored on a per vcpu basis
     into a per-CPU area, because it is only pertinent to the host while
     the vcpu is loaded. This results in better state tracking, and a
     smaller vcpu structure.

   - Add full handling of the ERET/ERETAA/ERETAB instructions in nested
     virtualisation. The last two instructions also require emulating
     part of the pointer authentication extension. As a result, the trap
     handling of pointer authentication has been greatly simplified.

   - Turn the global (and not very scalable) LPI translation cache into
     a per-ITS, scalable cache, making non directly injected LPIs much
     cheaper to make visible to the vcpu.

   - A batch of pKVM patches, mostly fixes and cleanups, as the
     upstreaming process seems to be resuming. Fingers crossed!

   - Allocate PPIs and SGIs outside of the vcpu structure, allowing for
     smaller EL2 mapping and some flexibility in implementing more or
     less than 32 private IRQs.

   - Purge stale mpidr_data if a vcpu is created after the MPIDR map has
     been created.

   - Preserve vcpu-specific ID registers across a vcpu reset.

   - Various minor cleanups and improvements.

  LoongArch:

   - Add ParaVirt IPI support

   - Add software breakpoint support

   - Add mmio trace events support

  RISC-V:

   - Support guest breakpoints using ebreak

   - Introduce per-VCPU mp_state_lock and reset_cntx_lock

   - Virtualize SBI PMU snapshot and counter overflow interrupts

   - New selftests for SBI PMU and Guest ebreak

   - Some preparatory work for both TDX and SNP page fault handling.

     This also cleans up the page fault path, so that the priorities of
     various kinds of fauls (private page, no memory, write to read-only
     slot, etc.) are easier to follow.

  x86:

   - Minimize amount of time that shadow PTEs remain in the special
     REMOVED_SPTE state.

     This is a state where the mmu_lock is held for reading but
     concurrent accesses to the PTE have to spin; shortening its use
     allows other vCPUs to repopulate the zapped region while the zapper
     finishes tearing down the old, defunct page tables.

   - Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID
     field, which is defined by hardware but left for software use.

     This lets KVM communicate its inability to map GPAs that set bits
     51:48 on hosts without 5-level nested page tables. Guest firmware
     is expected to use the information when mapping BARs; this avoids
     that they end up at a legal, but unmappable, GPA.

   - Fixed a bug where KVM would not reject accesses to MSR that aren't
     supposed to exist given the vCPU model and/or KVM configuration.

   - As usual, a bunch of code cleanups.

  x86 (AMD):

   - Implement a new and improved API to initialize SEV and SEV-ES VMs,
     which will also be extendable to SEV-SNP.

     The new API specifies the desired encryption in KVM_CREATE_VM and
     then separately initializes the VM. The new API also allows
     customizing the desired set of VMSA features; the features affect
     the measurement of the VM's initial state, and therefore enabling
     them cannot be done tout court by the hypervisor.

     While at it, the new API includes two bugfixes that couldn't be
     applied to the old one without a flag day in userspace or without
     affecting the initial measurement. When a SEV-ES VM is created with
     the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are rejected
     once the VMSA has been encrypted. Also, the FPU and AVX state will
     be synchronized and encrypted too.

   - Support for GHCB version 2 as applicable to SEV-ES guests.

     This, once more, is only accessible when using the new
     KVM_SEV_INIT2 flow for initialization of SEV-ES VMs.

  x86 (Intel):

   - An initial bunch of prerequisite patches for Intel TDX were merged.

     They generally don't do anything interesting. The only somewhat
     user visible change is a new debugging mode that checks that KVM's
     MMU never triggers a #VE virtualization exception in the guest.

   - Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig
     VM-Exit to L1, as per the SDM.

  Generic:

   - Use vfree() instead of kvfree() for allocations that always use
     vcalloc() or __vcalloc().

   - Remove .change_pte() MMU notifier - the changes to non-KVM code are
     small and Andrew Morton asked that I also take those through the
     KVM tree.

     The callback was only ever implemented by KVM (which was also the
     original user of MMU notifiers) but it had been nonfunctional ever
     since calls to set_pte_at_notify were wrapped with
     invalidate_range_start and invalidate_range_end... in 2012.

  Selftests:

   - Enhance the demand paging test to allow for better reporting and
     stressing of UFFD performance.

   - Convert the steal time test to generate TAP-friendly output.

   - Fix a flaky false positive in the xen_shinfo_test due to comparing
     elapsed time across two different clock domains.

   - Skip the MONITOR/MWAIT test if the host doesn't actually support
     MWAIT.

   - Avoid unnecessary use of "sudo" in the NX hugepage test wrapper
     shell script, to play nice with running in a minimal userspace
     environment.

   - Allow skipping the RSEQ test's sanity check that the vCPU was able
     to complete a reasonable number of KVM_RUNs, as the assert can fail
     on a completely valid setup.

     If the test is run on a large-ish system that is otherwise idle,
     and the test isn't affined to a low-ish number of CPUs, the vCPU
     task can be repeatedly migrated to CPUs that are in deep sleep
     states, which results in the vCPU having very little net runtime
     before the next migration due to high wakeup latencies.

   - Define _GNU_SOURCE for all selftests to fix a warning that was
     introduced by a change to kselftest_harness.h late in the 6.9
     cycle, and because forcing every test to #define _GNU_SOURCE is
     painful.

   - Provide a global pseudo-RNG instance for all tests, so that library
     code can generate random, but determinstic numbers.

   - Use the global pRNG to randomly force emulation of select writes
     from guest code on x86, e.g. to help validate KVM's emulation of
     locked accesses.

   - Allocate and initialize x86's GDT, IDT, TSS, segments, and default
     exception handlers at VM creation, instead of forcing tests to
     manually trigger the related setup.

  Documentation:

   - Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (225 commits)
  selftests/kvm: remove dead file
  KVM: selftests: arm64: Test vCPU-scoped feature ID registers
  KVM: selftests: arm64: Test that feature ID regs survive a reset
  KVM: selftests: arm64: Store expected register value in set_id_regs
  KVM: selftests: arm64: Rename helper in set_id_regs to imply VM scope
  KVM: arm64: Only reset vCPU-scoped feature ID regs once
  KVM: arm64: Reset VM feature ID regs from kvm_reset_sys_regs()
  KVM: arm64: Rename is_id_reg() to imply VM scope
  KVM: arm64: Destroy mpidr_data for 'late' vCPU creation
  KVM: arm64: Use hVHE in pKVM by default on CPUs with VHE support
  KVM: arm64: Fix hvhe/nvhe early alias parsing
  KVM: SEV: Allow per-guest configuration of GHCB protocol version
  KVM: SEV: Add GHCB handling for termination requests
  KVM: SEV: Add GHCB handling for Hypervisor Feature Support requests
  KVM: SEV: Add support to handle AP reset MSR protocol
  KVM: x86: Explicitly zero kvm_caps during vendor module load
  KVM: x86: Fully re-initialize supported_mce_cap on vendor module load
  KVM: x86: Fully re-initialize supported_vm_types on vendor module load
  KVM: x86/mmu: Sanity check that __kvm_faultin_pfn() doesn't create noslot pfns
  KVM: x86/mmu: Initialize kvm_page_fault's pfn and hva to error values
  ...
 2024-05-15 14:46:43 -07:00
Tejun Heo
a2a58909cf Merge branch 'for-6.10' into test-merge-for-6.10 2024-05-15 11:40:33 -10:00
Linus Torvalds
33e02dc69a sound updates for 6.10-rc1 
This one became bigger than usual, not in the total size but rather
 containing lots of small changes all over the places.  The majority of
 changes are about ASoC, especially SOF / Intel stuff, and we see an
 interesting work for ASoC DAPM graph visualization, while there are
 many other code cleanup and refactoring, too.
 
 Core:
 - A deadlock fix at device disconnection
 - A new tool dapm-graph for visualising the DAPM state
 
 ASoC:
 - Large updates throughout the Intel audio drivers
 - Fixes and clarifications for the DAPM documentation
 - Cleanups of accessors for driver data, module labelling, and for
   constification
 - Modernsation and cleanup work in the Mediatek drivers
 - Several fixes and features for the DaVinci I2S driver
 - New drivers for several AMD and Intel platforms, Nuvoton NAU8325,
   Rockchip RK3308 and Texas Instruments PCM6240
 
 HD-audio:
 - Cleanup for CONFIG_PM dependencies
 - Cirrus HD-audio codec fixes and quirks
 
 Others:
 - Series of tree-wide fixes in Makefiles to use *-y
 - Additions of missing module descriptions
 - Scarlett2 USB mixer enhancements
 - A series of legacy emu10k1 fixes and improvements
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Merge tag 'sound-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "This one became bigger than usual, not in the total size but rather
  containing lots of small changes all over the places.

  The majority of changes are about ASoC, especially SOF / Intel stuff,
  and we see an interesting work for ASoC DAPM graph visualization,
  while there are many other code cleanup and refactoring, too.

  Core:
   - A deadlock fix at device disconnection
   - A new tool dapm-graph for visualising the DAPM state

  ASoC:
   - Large updates throughout the Intel audio drivers
   - Fixes and clarifications for the DAPM documentation
   - Cleanups of accessors for driver data, module labelling, and for
     constification
   - Modernsation and cleanup work in the Mediatek drivers
   - Several fixes and features for the DaVinci I2S driver
   - New drivers for several AMD and Intel platforms, Nuvoton NAU8325,
     Rockchip RK3308 and Texas Instruments PCM6240

  HD-audio:
   - Cleanup for CONFIG_PM dependencies
   - Cirrus HD-audio codec fixes and quirks

  Others:
   - Series of tree-wide fixes in Makefiles to use *-y
   - Additions of missing module descriptions
   - Scarlett2 USB mixer enhancements
   - A series of legacy emu10k1 fixes and improvements"

* tag 'sound-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (603 commits)
  ALSA: hda/realtek: Drop doubly quirk entry for 103c:8a2e
  ALSA: hda/realtek - fixed headset Mic not show
  ASoC: SOF: amd: Fix build error with built-in config
  ALSA: scarlett2: Increase mixer range to +12dB
  ALSA: scarlett2: Add S/PDIF source selection controls
  ALSA: core: Remove superfluous CONFIG_PM
  ALSA: Fix deadlocks with kctl removals at disconnection
  ASoC: audio-graph-card2: call of_node_get() before of_get_next_child()
  ASoC: SOF: amd: Correct spaces in Makefile
  ASoC: rt715-sdca-sdw: Fix wrong complete waiting in rt715_dev_resume()
  ASoC: Intel: sof_sdw_rt_amp: use dai parameter
  ASoC: Intel: sof_sdw: add dai parameter to rtd_init callback
  ASoC: Intel: sof_sdw: use .controls/.widgets to add controls/widgets
  ASoC: Intel: sof_sdw: add controls and dapm widgets in codec_info
  ASoC: Intel: sof_sdw: use generic name for controls/widgets
  ASoC: Intel: sof_sdw_cs_amp: rename Speakers to Speaker
  ASoC: Intel: maxim-common: change max98373 data to static
  ASoC: Intel: sof_sdw: add max98373 dapm routes
  ASoC: Intel: sof_rt5682: use max_98373_dai_link function
  ASoC: Intel: sof_nau8825: use max_98373_dai_link function
  ...
 2024-05-15 10:02:36 -07:00
Linus Torvalds
1b294a1f35 Networking changes for 6.10. 
Core & protocols
 ----------------
 
  - Complete rework of garbage collection of AF_UNIX sockets.
    AF_UNIX is prone to forming reference count cycles due to fd passing
    functionality. New method based on Tarjan's Strongly Connected Components
    algorithm should be both faster and remove a lot of workarounds
    we accumulated over the years.
 
  - Add TCP fraglist GRO support, allowing chaining multiple TCP packets
    and forwarding them together. Useful for small switches / routers which
    lack basic checksum offload in some scenarios (e.g. PPPoE).
 
  - Support using SMP threads for handling packet backlog i.e. packet
    processing from software interfaces and old drivers which don't
    use NAPI. This helps move the processing out of the softirq jumble.
 
  - Continue work of converting from rtnl lock to RCU protection.
    Don't require rtnl lock when reading: IPv6 routing FIB, IPv6 address
    labels, netdev threaded NAPI sysfs files, bonding driver's sysfs files,
    MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics, TC Qdiscs,
    neighbor entries, ARP entries via ioctl(SIOCGARP), a lot of the link
    information available via rtnetlink.
 
  - Small optimizations from Eric to UDP wake up handling, memory accounting,
    RPS/RFS implementation, TCP packet sizing etc.
 
  - Allow direct page recycling in the bulk API used by XDP, for +2% PPS.
 
  - Support peek with an offset on TCP sockets.
 
  - Add MPTCP APIs for querying last time packets were received/sent/acked,
    and whether MPTCP "upgrade" succeeded on a TCP socket.
 
  - Add intra-node communication shortcut to improve SMC performance.
 
  - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol driver.
 
  - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
 
  - Add reset reasons for tracing what caused a TCP reset to be sent.
 
  - Introduce direction attribute for xfrm (IPSec) states.
    State can be used either for input or output packet processing.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
    This required touch-ups and renaming of a few existing users.
 
  - Add Endian-dependent __counted_by_{le,be} annotations.
 
  - Make building selftests "quieter" by printing summaries like
    "CC object.o" rather than full commands with all the arguments.
 
 Netfilter
 ---------
 
  - Use GFP_KERNEL to clone elements, to deal better with OOM situations
    and avoid failures in the .commit step.
 
 BPF
 ---
 
  - Add eBPF JIT for ARCv2 CPUs.
 
  - Support attaching kprobe BPF programs through kprobe_multi link in
    a session mode, meaning, a BPF program is attached to both function entry
    and return, the entry program can decide if the return program gets
    executed and the entry program can share u64 cookie value with return
    program. "Session mode" is a common use-case for tetragon and bpftrace.
 
  - Add the ability to specify and retrieve BPF cookie for raw tracepoint
    programs in order to ease migration from classic to raw tracepoints.
 
  - Add an internal-only BPF per-CPU instruction for resolving per-CPU
    memory addresses and implement support in x86, ARM64 and RISC-V JITs.
    This allows inlining functions which need to access per-CPU state.
 
  - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
    atomics in bpf_arena which can be JITed as a single x86 instruction.
    Support BPF arena on ARM64.
 
  - Add a new bpf_wq API for deferring events and refactor process-context
    bpf_timer code to keep common code where possible.
 
  - Harden the BPF verifier's and/or/xor value tracking.
 
  - Introduce crypto kfuncs to let BPF programs call kernel crypto APIs.
 
  - Support bpf_tail_call_static() helper for BPF programs with GCC 13.
 
  - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
    program to have code sections where preemption is disabled.
 
 Driver API
 ----------
 
  - Skip software TC processing completely if all installed rules are
    marked as HW-only, instead of checking the HW-only flag rule by rule.
 
  - Add support for configuring PoE (Power over Ethernet), similar to
    the already existing support for PoDL (Power over Data Line) config.
 
  - Initial bits of a queue control API, for now allowing a single queue
    to be reset without disturbing packet flow to other queues.
 
  - Common (ethtool) statistics for hardware timestamping.
 
 Tests and tooling
 -----------------
 
  - Remove the need to create a config file to run the net forwarding tests
    so that a naive "make run_tests" can exercise them.
 
  - Define a method of writing tests which require an external endpoint
    to communicate with (to send/receive data towards the test machine).
    Add a few such tests.
 
  - Create a shared code library for writing Python tests. Expose the YAML
    Netlink library from tools/ to the tests for easy Netlink access.
 
  - Move netfilter tests under net/, extend them, separate performance tests
    from correctness tests, and iron out issues found by running them
    "on every commit".
 
  - Refactor BPF selftests to use common network helpers.
 
  - Further work filling in YAML definitions of Netlink messages for:
    nftables, team driver, bonding interfaces, vlan interfaces, VF info,
    TC u32 mark, TC police action.
 
  - Teach Python YAML Netlink to decode attribute policies.
 
  - Extend the definition of the "indexed array" construct in the specs
    to cover arrays of scalars rather than just nests.
 
  - Add hyperlinks between definitions in generated Netlink docs.
 
 Drivers
 -------
 
  - Make sure unsupported flower control flags are rejected by drivers,
    and make more drivers report errors directly to the application rather
    than dmesg (large number of driver changes from Asbjørn Sloth Tønnesen).
 
  - Ethernet high-speed NICs:
    - Broadcom (bnxt):
      - support multiple RSS contexts and steering traffic to them
      - support XDP metadata
      - make page pool allocations more NUMA aware
    - Intel (100G, ice, idpf):
      - extract datapath code common among Intel drivers into a library
      - use fewer resources in switchdev by sharing queues with the PF
      - add PFCP filter support
      - add Ethernet filter support
      - use a spinlock instead of HW lock in PTP clock ops
      - support 5 layer Tx scheduler topology
    - nVidia/Mellanox:
      - 800G link modes and 100G SerDes speeds
      - per-queue IRQ coalescing configuration
    - Marvell Octeon:
      - support offloading TC packet mark action
 
  - Ethernet NICs consumer, embedded and virtual:
    - stop lying about skb->truesize in USB Ethernet drivers, it messes up
      TCP memory calculations
    - Google cloud vNIC:
      - support changing ring size via ethtool
      - support ring reset using the queue control API
    - VirtIO net:
      - expose flow hash from RSS to XDP
      - per-queue statistics
      - add selftests
    - Synopsys (stmmac):
      - support controllers which require an RX clock signal from the MII
        bus to perform their hardware initialization
    - TI:
      - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
      - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
      - cpsw: minimal XDP support
    - Renesas (ravb):
      - support describing the MDIO bus
    - Realtek (r8169):
      - add support for RTL8168M
    - Microchip Sparx5:
      - matchall and flower actions mirred and redirect
 
  - Ethernet switches:
    - nVidia/Mellanox:
      - improve events processing performance
    - Marvell:
      - add support for MV88E6250 family internal PHYs
    - Microchip:
      - add DCB and DSCP mapping support for KSZ switches
      - vsc73xx: convert to PHYLINK
    - Realtek:
      - rtl8226b/rtl8221b: add C45 instances and SerDes switching
 
  - Many driver changes related to PHYLIB and PHYLINK deprecated API cleanup.
 
  - Ethernet PHYs:
    - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
    - micrel: lan8814: add support for PPS out and external timestamp trigger
 
  - WiFi:
    - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices drivers.
      Modern devices can only be configured using nl80211.
    - mac80211/cfg80211
      - handle color change per link for WiFi 7 Multi-Link Operation
    - Intel (iwlwifi):
      - don't support puncturing in 5 GHz
      - support monitor mode on passive channels
      - BZ-W device support
      - P2P with HE/EHT support
      - re-add support for firmware API 90
      - provide channel survey information for Automatic Channel Selection
    - MediaTek (mt76):
      - mt7921 LED control
      - mt7925 EHT radiotap support
      - mt7920e PCI support
    - Qualcomm (ath11k):
      - P2P support for QCA6390, WCN6855 and QCA2066
      - support hibernation
      - ieee80211-freq-limit Device Tree property support
    - Qualcomm (ath12k):
      - refactoring in preparation of multi-link support
      - suspend and hibernation support
      - ACPI support
      - debugfs support, including dfs_simulate_radar support
    - RealTek:
      - rtw88: RTL8723CS SDIO device support
      - rtw89: RTL8922AE Wi-Fi 7 PCI device support
      - rtw89: complete features of new WiFi 7 chip 8922AE including
        BT-coexistence and Wake-on-WLAN
      - rtw89: use BIOS ACPI settings to set TX power and channels
      - rtl8xxxu: enable Management Frame Protection (MFP) support
 
  - Bluetooth:
    - support for Intel BlazarI and Filmore Peak2 (BE201)
    - support for MediaTek MT7921S SDIO
    - initial support for Intel PCIe BT driver
    - remove HCI_AMP support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Complete rework of garbage collection of AF_UNIX sockets.

     AF_UNIX is prone to forming reference count cycles due to fd
     passing functionality. New method based on Tarjan's Strongly
     Connected Components algorithm should be both faster and remove a
     lot of workarounds we accumulated over the years.

   - Add TCP fraglist GRO support, allowing chaining multiple TCP
     packets and forwarding them together. Useful for small switches /
     routers which lack basic checksum offload in some scenarios (e.g.
     PPPoE).

   - Support using SMP threads for handling packet backlog i.e. packet
     processing from software interfaces and old drivers which don't use
     NAPI. This helps move the processing out of the softirq jumble.

   - Continue work of converting from rtnl lock to RCU protection.

     Don't require rtnl lock when reading: IPv6 routing FIB, IPv6
     address labels, netdev threaded NAPI sysfs files, bonding driver's
     sysfs files, MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics,
     TC Qdiscs, neighbor entries, ARP entries via ioctl(SIOCGARP), a lot
     of the link information available via rtnetlink.

   - Small optimizations from Eric to UDP wake up handling, memory
     accounting, RPS/RFS implementation, TCP packet sizing etc.

   - Allow direct page recycling in the bulk API used by XDP, for +2%
     PPS.

   - Support peek with an offset on TCP sockets.

   - Add MPTCP APIs for querying last time packets were received/sent/acked
     and whether MPTCP "upgrade" succeeded on a TCP socket.

   - Add intra-node communication shortcut to improve SMC performance.

   - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol
     driver.

   - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.

   - Add reset reasons for tracing what caused a TCP reset to be sent.

   - Introduce direction attribute for xfrm (IPSec) states. State can be
     used either for input or output packet processing.

  Things we sprinkled into general kernel code:

   - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().

     This required touch-ups and renaming of a few existing users.

   - Add Endian-dependent __counted_by_{le,be} annotations.

   - Make building selftests "quieter" by printing summaries like
     "CC object.o" rather than full commands with all the arguments.

  Netfilter:

   - Use GFP_KERNEL to clone elements, to deal better with OOM
     situations and avoid failures in the .commit step.

  BPF:

   - Add eBPF JIT for ARCv2 CPUs.

   - Support attaching kprobe BPF programs through kprobe_multi link in
     a session mode, meaning, a BPF program is attached to both function
     entry and return, the entry program can decide if the return
     program gets executed and the entry program can share u64 cookie
     value with return program. "Session mode" is a common use-case for
     tetragon and bpftrace.

   - Add the ability to specify and retrieve BPF cookie for raw
     tracepoint programs in order to ease migration from classic to raw
     tracepoints.

   - Add an internal-only BPF per-CPU instruction for resolving per-CPU
     memory addresses and implement support in x86, ARM64 and RISC-V
     JITs. This allows inlining functions which need to access per-CPU
     state.

   - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
     atomics in bpf_arena which can be JITed as a single x86
     instruction. Support BPF arena on ARM64.

   - Add a new bpf_wq API for deferring events and refactor
     process-context bpf_timer code to keep common code where possible.

   - Harden the BPF verifier's and/or/xor value tracking.

   - Introduce crypto kfuncs to let BPF programs call kernel crypto
     APIs.

   - Support bpf_tail_call_static() helper for BPF programs with GCC 13.

   - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
     program to have code sections where preemption is disabled.

  Driver API:

   - Skip software TC processing completely if all installed rules are
     marked as HW-only, instead of checking the HW-only flag rule by
     rule.

   - Add support for configuring PoE (Power over Ethernet), similar to
     the already existing support for PoDL (Power over Data Line)
     config.

   - Initial bits of a queue control API, for now allowing a single
     queue to be reset without disturbing packet flow to other queues.

   - Common (ethtool) statistics for hardware timestamping.

  Tests and tooling:

   - Remove the need to create a config file to run the net forwarding
     tests so that a naive "make run_tests" can exercise them.

   - Define a method of writing tests which require an external endpoint
     to communicate with (to send/receive data towards the test
     machine). Add a few such tests.

   - Create a shared code library for writing Python tests. Expose the
     YAML Netlink library from tools/ to the tests for easy Netlink
     access.

   - Move netfilter tests under net/, extend them, separate performance
     tests from correctness tests, and iron out issues found by running
     them "on every commit".

   - Refactor BPF selftests to use common network helpers.

   - Further work filling in YAML definitions of Netlink messages for:
     nftables, team driver, bonding interfaces, vlan interfaces, VF
     info, TC u32 mark, TC police action.

   - Teach Python YAML Netlink to decode attribute policies.

   - Extend the definition of the "indexed array" construct in the specs
     to cover arrays of scalars rather than just nests.

   - Add hyperlinks between definitions in generated Netlink docs.

  Drivers:

   - Make sure unsupported flower control flags are rejected by drivers,
     and make more drivers report errors directly to the application
     rather than dmesg (large number of driver changes from Asbjørn
     Sloth Tønnesen).

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support multiple RSS contexts and steering traffic to them
         - support XDP metadata
         - make page pool allocations more NUMA aware
      - Intel (100G, ice, idpf):
         - extract datapath code common among Intel drivers into a library
         - use fewer resources in switchdev by sharing queues with the PF
         - add PFCP filter support
         - add Ethernet filter support
         - use a spinlock instead of HW lock in PTP clock ops
         - support 5 layer Tx scheduler topology
      - nVidia/Mellanox:
         - 800G link modes and 100G SerDes speeds
         - per-queue IRQ coalescing configuration
      - Marvell Octeon:
         - support offloading TC packet mark action

   - Ethernet NICs consumer, embedded and virtual:
      - stop lying about skb->truesize in USB Ethernet drivers, it
        messes up TCP memory calculations
      - Google cloud vNIC:
         - support changing ring size via ethtool
         - support ring reset using the queue control API
      - VirtIO net:
         - expose flow hash from RSS to XDP
         - per-queue statistics
         - add selftests
      - Synopsys (stmmac):
         - support controllers which require an RX clock signal from the
           MII bus to perform their hardware initialization
      - TI:
         - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
         - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
         - cpsw: minimal XDP support
      - Renesas (ravb):
         - support describing the MDIO bus
      - Realtek (r8169):
         - add support for RTL8168M
      - Microchip Sparx5:
         - matchall and flower actions mirred and redirect

   - Ethernet switches:
      - nVidia/Mellanox:
         - improve events processing performance
      - Marvell:
         - add support for MV88E6250 family internal PHYs
      - Microchip:
         - add DCB and DSCP mapping support for KSZ switches
         - vsc73xx: convert to PHYLINK
      - Realtek:
         - rtl8226b/rtl8221b: add C45 instances and SerDes switching

   - Many driver changes related to PHYLIB and PHYLINK deprecated API
     cleanup

   - Ethernet PHYs:
      - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
      - micrel: lan8814: add support for PPS out and external timestamp trigger

   - WiFi:
      - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices
        drivers. Modern devices can only be configured using nl80211.
      - mac80211/cfg80211
         - handle color change per link for WiFi 7 Multi-Link Operation
      - Intel (iwlwifi):
         - don't support puncturing in 5 GHz
         - support monitor mode on passive channels
         - BZ-W device support
         - P2P with HE/EHT support
         - re-add support for firmware API 90
         - provide channel survey information for Automatic Channel Selection
      - MediaTek (mt76):
         - mt7921 LED control
         - mt7925 EHT radiotap support
         - mt7920e PCI support
      - Qualcomm (ath11k):
         - P2P support for QCA6390, WCN6855 and QCA2066
         - support hibernation
         - ieee80211-freq-limit Device Tree property support
      - Qualcomm (ath12k):
         - refactoring in preparation of multi-link support
         - suspend and hibernation support
         - ACPI support
         - debugfs support, including dfs_simulate_radar support
      - RealTek:
         - rtw88: RTL8723CS SDIO device support
         - rtw89: RTL8922AE Wi-Fi 7 PCI device support
         - rtw89: complete features of new WiFi 7 chip 8922AE including
           BT-coexistence and Wake-on-WLAN
         - rtw89: use BIOS ACPI settings to set TX power and channels
         - rtl8xxxu: enable Management Frame Protection (MFP) support

   - Bluetooth:
      - support for Intel BlazarI and Filmore Peak2 (BE201)
      - support for MediaTek MT7921S SDIO
      - initial support for Intel PCIe BT driver
      - remove HCI_AMP support"

* tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1827 commits)
  selftests: netfilter: fix packetdrill conntrack testcase
  net: gro: fix napi_gro_cb zeroed alignment
  Bluetooth: btintel_pcie: Refactor and code cleanup
  Bluetooth: btintel_pcie: Fix warning reported by sparse
  Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1
  Bluetooth: btintel: Fix compiler warning for multi_v7_defconfig config
  Bluetooth: btintel_pcie: Fix compiler warnings
  Bluetooth: btintel_pcie: Add *setup* function to download firmware
  Bluetooth: btintel_pcie: Add support for PCIe transport
  Bluetooth: btintel: Export few static functions
  Bluetooth: HCI: Remove HCI_AMP support
  Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()
  Bluetooth: qca: Fix error code in qca_read_fw_build_info()
  Bluetooth: hci_conn: Use __counted_by() and avoid -Wfamnae warning
  Bluetooth: btintel: Add support for Filmore Peak2 (BE201)
  Bluetooth: btintel: Add support for BlazarI
  LE Create Connection command timeout increased to 20 secs
  dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
  Bluetooth: compute LE flow credits based on recvbuf space
  Bluetooth: hci_sync: Use cmd->num_cis instead of magic number
  ...
 2024-05-14 19:42:24 -07:00
Linus Torvalds
b850dc206a firewire updates for v6.10 
During the development period of v6.8 kernel, it became evident that there
 was a lack of helper utilities to trace the initial state of bus, while
 investigating certain PHYs compliant with different versions of IEEE 1394
 specification.
 
 This series of changes includes the addition of tracepoints events,
 provided by 'firewire' subsystem. These events enable tracing of how
 firewire core functions during bus reset and asynchronous communication
 over IEEE 1394 bus.
 
 When implementing the tracepoints events, it was found that the existing
 serialization and deserialization helpers for several types of
 asynchronous packets are scattered across both firewire-core and
 firewire-ohci kernel modules. A set of inline functions is newly added
 to address it, along with some KUnit tests, serving as the foundation for
 the tracepoints events. This renders the dispersed code obsolete.
 
 The remaining changes constitute the final steps in phasing out the usage
 of deprecated PCI MSI APIs, in continuation from the previous version.
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Merge tag 'firewire-updates-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire updates from Takashi Sakamoto:
 "During the development period of v6.8 kernel, it became evident that
  there was a lack of helper utilities to trace the initial state of
  bus, while investigating certain PHYs compliant with different
  versions of IEEE 1394 specification.

  This series of changes includes the addition of tracepoints events,
  provided by 'firewire' subsystem. These events enable tracing of how
  firewire core functions during bus reset and asynchronous
  communication over IEEE 1394 bus.

  When implementing the tracepoints events, it was found that the
  existing serialization and deserialization helpers for several types
  of asynchronous packets are scattered across both firewire-core and
  firewire-ohci kernel modules. A set of inline functions is newly added
  to address it, along with some KUnit tests, serving as the foundation
  for the tracepoints events. This renders the dispersed code obsolete.

  The remaining changes constitute the final steps in phasing out the
  usage of deprecated PCI MSI APIs, in continuation from the previous
  version"

* tag 'firewire-updates-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: (29 commits)
  firewire: obsolete usage of *-objs in Makefile for KUnit test
  firewire: core: remove flag and width from u64 formats of tracepoints events
  firewire: core: fix type of timestamp for async_inbound_template tracepoints events
  firewire: core: add tracepoint event for handling bus reset
  Revert "firewire: core: option to log bus reset initiation"
  firewire: core: add tracepoints events for initiating bus reset
  firewire: ohci: obsolete OHCI_PARAM_DEBUG_BUSRESETS from debug module parameter
  firewire: ohci: add bus-reset event for initial set of handled irq
  firewire: core: add tracepoints event for asynchronous inbound phy packet
  firewire: core/cdev: add tracepoints events for asynchronous phy packet
  firewire: core: add tracepoints events for asynchronous outbound response
  firewire: core: add tracepoint event for asynchronous inbound request
  firewire: core: add tracepoints event for asynchronous inbound response
  firewire: core: add tracepoints events for asynchronous outbound request
  firewire: core: add support for Linux kernel tracepoints
  firewire: core: replace local macros with common inline functions for isochronous packet header
  firewire: core: add common macro to serialize/deserialize isochronous packet header
  firewire: core: obsolete tcode check macros with inline functions
  firewire: ohci: replace hard-coded values with common macros
  firewire: ohci: replace hard-coded values with inline functions for asynchronous packet header
  ...
 2024-05-14 18:57:22 -07:00
Linus Torvalds
6fffab6676 dlm for 6.10 
- Fix a long standing race between the unlock callback for the last lkb
 struct, and removing the rsb that became unused after the final unlock.
 This could lead different nodes to inconsistent info about the rsb master
 node.
 
 - Remove unnecessary refcounting on callback structs, returning to the way
 things were done in the past.
 
 - Do message processing in softirq context.  This allows dlm messages to
 be cleared more quickly and efficiently, reducing long lists of incomplete
 requests.  A future change to run callbacks directly from this context
 will make this more effective.
 
 - The softirq message processing involved a number of patches changing
 mutexes to spinlocks and rwlocks, and a fair amount of code re-org in
 preparation.
 
 - Use an rhashtable for rsb structs, rather than our old internal hash
 table implementation.  This also required some re-org of lists and locks
 preparation for the change.
 
 - Drop the dlm_scand kthread, and use timers to clear unused rsb structs.
 Scanning all rsb's periodically was a lot of wasted work.
 
 - Fix recent regression in logic for copying LVB data in user space lock
 requests.
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Merge tag 'dlm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set includes some small fixes, and some big internal changes:

   - Fix a long standing race between the unlock callback for the last
     lkb struct, and removing the rsb that became unused after the final
     unlock. This could lead different nodes to inconsistent info about
     the rsb master node.

   - Remove unnecessary refcounting on callback structs, returning to
     the way things were done in the past.

   - Do message processing in softirq context. This allows dlm messages
     to be cleared more quickly and efficiently, reducing long lists of
     incomplete requests. A future change to run callbacks directly from
     this context will make this more effective.

   - The softirq message processing involved a number of patches
     changing mutexes to spinlocks and rwlocks, and a fair amount of
     code re-org in preparation.

   - Use an rhashtable for rsb structs, rather than our old internal
     hash table implementation. This also required some re-org of lists
     and locks preparation for the change.

   - Drop the dlm_scand kthread, and use timers to clear unused rsb
     structs. Scanning all rsb's periodically was a lot of wasted work.

   - Fix recent regression in logic for copying LVB data in user space
     lock requests"

* tag 'dlm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: (34 commits)
  dlm: return -ENOMEM if ls_recover_buf fails
  dlm: fix sleep in atomic context
  dlm: use rwlock for lkbidr
  dlm: use rwlock for rsb hash table
  dlm: drop dlm_scand kthread and use timers
  dlm: do not use ref counts for rsb in the toss state
  dlm: switch to use rhashtable for rsbs
  dlm: add rsb lists for iteration
  dlm: merge toss and keep hash table lists into one list
  dlm: change to single hashtable lock
  dlm: increment ls_count for dlm_scand
  dlm: do message processing in softirq context
  dlm: use spin_lock_bh for message processing
  dlm: remove schedule in receive path
  dlm: convert ls_recv_active from rw_semaphore to rwlock
  dlm: avoid blocking receive at the end of recovery
  dlm: convert res_lock to spinlock
  dlm: convert ls_waiters_mutex to spinlock
  dlm: drop mutex use in waiters recovery
  dlm: add new struct to save position in dlm_copy_master_names
  ...
 2024-05-14 17:29:25 -07:00
Linus Torvalds
a3d1f54d7a for-6.10-tag 
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Merge tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "This update brings a few minor performance improvements, otherwise
  there's a lot of refactoring, cleanups and other sort of not user
  visible changes.

  Performance improvements:

   - inline b-tree locking functions, improvement in metadata-heavy
     changes

   - relax locking on a range that's being reflinked, allows read
     operations to run in parallel

   - speed up NOCOW write checks (throughput +9% on a sample test)

   - extent locking ranges have been reduced in several places, namely
     around delayed ref processing

  Core:

   - more page to folio conversions:
      - relocation
      - send
      - compression
      - inline extent handling
      - super block write and wait

   - extent_map structure optimizations:
      - reduced structure size
      - code simplifications
      - add shrinker for allocated objects, the numbers can go high and
        could exhaust memory on smaller systems (reported) as they may
        not get an opportunity to be freed fast enough

   - extent locking optimizations:
      - reduce locking ranges where it does not seem to be necessary and
        are safe due to other means of synchronization
      - potential improvements due to lower contention,
        allocation/freeing and state management operations of extent
        state tracking structures

   - delayed ref cleanups and simplifications

   - updated trace points

   - improved error handling, warnings and assertions

   - cleanups and refactoring, unification of error handling paths"

* tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (122 commits)
  btrfs: qgroup: fix initialization of auto inherit array
  btrfs: count super block write errors in device instead of tracking folio error state
  btrfs: use the folio iterator in btrfs_end_super_write()
  btrfs: convert super block writes to folio in write_dev_supers()
  btrfs: convert super block writes to folio in wait_dev_supers()
  bio: Export bio_add_folio_nofail to modules
  btrfs: remove duplicate included header from fs.h
  btrfs: add a cached state to extent_clear_unlock_delalloc
  btrfs: push extent lock down in submit_one_async_extent
  btrfs: push lock_extent down in cow_file_range()
  btrfs: move can_cow_file_range_inline() outside of the extent lock
  btrfs: push lock_extent into cow_file_range_inline
  btrfs: push extent lock into cow_file_range
  btrfs: push extent lock into run_delalloc_cow
  btrfs: remove unlock_extent from run_delalloc_compressed
  btrfs: push extent lock down in run_delalloc_nocow
  btrfs: adjust while loop condition in run_delalloc_nocow
  btrfs: push extent lock into run_delalloc_nocow
  btrfs: push the extent lock into btrfs_run_delalloc_range
  btrfs: lock extent when doing inline extent in compression
  ...
 2024-05-14 17:25:36 -07:00
Jesper Dangaard Brouer
21c38a3bd4 cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints 
This closely resembles helpers added for the global cgroup_rstat_lock in
commit fc29e04ae1 ("cgroup/rstat: add cgroup_rstat_lock helpers and
tracepoints"). This is for the per CPU lock cgroup_rstat_cpu_lock.

Based on production workloads, we observe the fast-path "update" function
cgroup_rstat_updated() is invoked around 3 million times per sec, while the
"flush" function cgroup_rstat_flush_locked(), walking each possible CPU,
can see periodic spikes of 700 invocations/sec.

For this reason, the tracepoints are split into normal and fastpath
versions for this per-CPU lock. Making it feasible for production to
continuously monitor the non-fastpath tracepoint to detect lock contention
issues. The reason for monitoring is that lock disables IRQs which can
disturb e.g. softirq processing on the local CPUs involved. When the
global cgroup_rstat_lock stops disabling IRQs (e.g converted to a mutex),
this per CPU lock becomes the next bottleneck that can introduce latency
variations.

A practical bpftrace script for monitoring contention latency:

 bpftrace -e '
   tracepoint:cgroup:cgroup_rstat_cpu_lock_contended {
     @start[tid]=nsecs; @cnt[probe]=count()}
   tracepoint:cgroup:cgroup_rstat_cpu_locked {
     if (args->contended) {
       @wait_ns=hist(nsecs-@start[tid]); delete(@start[tid]);}
     @cnt[probe]=count()}
   interval:s:1 {time("%H:%M:%S "); print(@wait_ns); print(@cnt); clear(@cnt);}'

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2024-05-14 09:43:17 -10:00
Bart Van Assche
08190cc4d8 nbd: Use NULL to represent a pointer 
This patch fixes the following sparse warnings:

drivers/block/nbd.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/nbd.h):
./include/trace/events/nbd.h:61:1: warning: Using plain integer as NULL pointer
drivers/block/nbd.c: note: in included file (through include/trace/perf.h, include/trace/define_trace.h, include/trace/events/nbd.h):
./include/trace/events/nbd.h:61:1: warning: Using plain integer as NULL pointer

Cc: Christoph Hellwig <hch@lst.de>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240510202313.25209-2-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2024-05-14 07:22:35 -06:00
Linus Torvalds
ecd83bcbed x86/cpu changes for v6.10: 
- Rework the x86 CPU vendor/family/model code: introduce the 'VFM'
    value that is an 8+8+8 bit concatenation of the vendor/family/model
    value, and add macros that work on VFM values. This simplifies the
    addition of new Intel models & families, and simplifies existing
    enumeration & quirk code.
 
  - Add support for the AMD 0x80000026 leaf, to better parse topology
    information.
 
  - Optimize the NUMA allocation layout of more per-CPU data structures
 
  - Improve the workaround for AMD erratum 1386
 
  - Clear TME from /proc/cpuinfo as well, when disabled by the firmware
 
  - Improve x86 self-tests
 
  - Extend the mce_record tracepoint with the ::ppin and ::microcode fields
 
  - Implement recovery for MCE errors in TDX/SEAM non-root mode
 
  - Misc cleanups and fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu updates from Ingo Molnar:

 - Rework the x86 CPU vendor/family/model code: introduce the 'VFM'
   value that is an 8+8+8 bit concatenation of the vendor/family/model
   value, and add macros that work on VFM values. This simplifies the
   addition of new Intel models & families, and simplifies existing
   enumeration & quirk code.

 - Add support for the AMD 0x80000026 leaf, to better parse topology
   information

 - Optimize the NUMA allocation layout of more per-CPU data structures

 - Improve the workaround for AMD erratum 1386

 - Clear TME from /proc/cpuinfo as well, when disabled by the firmware

 - Improve x86 self-tests

 - Extend the mce_record tracepoint with the ::ppin and ::microcode fields

 - Implement recovery for MCE errors in TDX/SEAM non-root mode

 - Misc cleanups and fixes

* tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  x86/mm: Switch to new Intel CPU model defines
  x86/tsc_msr: Switch to new Intel CPU model defines
  x86/tsc: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/resctrl: Switch to new Intel CPU model defines
  x86/microcode/intel: Switch to new Intel CPU model defines
  x86/mce: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/cpu/intel_epb: Switch to new Intel CPU model defines
  x86/aperfmperf: Switch to new Intel CPU model defines
  x86/apic: Switch to new Intel CPU model defines
  perf/x86/msr: Switch to new Intel CPU model defines
  perf/x86/intel/uncore: Switch to new Intel CPU model defines
  perf/x86/intel/pt: Switch to new Intel CPU model defines
  perf/x86/lbr: Switch to new Intel CPU model defines
  perf/x86/intel/cstate: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/cpu/vfm: Update arch/x86/include/asm/intel-family.h
  x86/cpu/vfm: Add new macros to work with (vendor/family/model) values
  ...
 2024-05-13 18:44:44 -07:00
Linus Torvalds
6e5a0c30b6 Scheduler changes for v6.10: 
- Add cpufreq pressure feedback for the scheduler
 
  - Rework misfit load-balancing wrt. affinity restrictions
 
  - Clean up and simplify the code around ::overutilized and
    ::overload access.
 
  - Simplify sched_balance_newidle()
 
  - Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
    handling that changed the output.
 
  - Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()
 
  - Reorganize, clean up and unify most of the higher level
    scheduler balancing function names around the sched_balance_*()
    prefix.
 
  - Simplify the balancing flag code (sched_balance_running)
 
  - Miscellaneous cleanups & fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - Add cpufreq pressure feedback for the scheduler

 - Rework misfit load-balancing wrt affinity restrictions

 - Clean up and simplify the code around ::overutilized and
   ::overload access.

 - Simplify sched_balance_newidle()

 - Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
   handling that changed the output.

 - Rework & clean up <asm/vtime.h> interactions wrt arch_vtime_task_switch()

 - Reorganize, clean up and unify most of the higher level
   scheduler balancing function names around the sched_balance_*()
   prefix

 - Simplify the balancing flag code (sched_balance_running)

 - Miscellaneous cleanups & fixes

* tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  sched/pelt: Remove shift of thermal clock
  sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
  thermal/cpufreq: Remove arch_update_thermal_pressure()
  sched/cpufreq: Take cpufreq feedback into account
  cpufreq: Add a cpufreq pressure feedback for the scheduler
  sched/fair: Fix update of rd->sg_overutilized
  sched/vtime: Do not include <asm/vtime.h> header
  s390/irq,nmi: Include <asm/vtime.h> header directly
  s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
  sched/vtime: Get rid of generic vtime_task_switch() implementation
  sched/vtime: Remove confusing arch_vtime_task_switch() declaration
  sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags
  sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
  sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
  sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
  sched/fair: Rename root_domain::overload to ::overloaded
  sched/fair: Use helper functions to access root_domain::overload
  sched/fair: Check root_domain::overload value before update
  sched/fair: Combine EAS check with root_domain::overutilized access
  sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
  ...
 2024-05-13 17:18:51 -07:00
Linus Torvalds
92f74f7f40 execve updates for 6.10-rc1 
- Provide knob to change (previously fixed) coredump NOTES size (Allen Pais)
 
 - Add sched_prepare_exec tracepoint (Marco Elver)
 
 - Make /proc/$pid/auxv work under binfmt_elf_fdpic (Max Filippov)
 
 - Convert ARCH_HAVE_EXTRA_ELF_NOTES to proper Kconfig (Vignesh Balasubramanian)
 
 - Leave a gap between .bss and brk
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Merge tag 'execve-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull execve updates from Kees Cook:

 - Provide knob to change (previously fixed) coredump NOTES size
   (Allen Pais)

 - Add sched_prepare_exec tracepoint (Marco Elver)

 - Make /proc/$pid/auxv work under binfmt_elf_fdpic (Max Filippov)

 - Convert ARCH_HAVE_EXTRA_ELF_NOTES to proper Kconfig (Vignesh
   Balasubramanian)

 - Leave a gap between .bss and brk

* tag 'execve-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  fs/coredump: Enable dynamic configuration of max file note size
  binfmt_elf_fdpic: fix /proc/<pid>/auxv
  binfmt_elf: Leave a gap between .bss and brk
  Replace macro "ARCH_HAVE_EXTRA_ELF_NOTES" with kconfig
  tracing: Add sched_prepare_exec tracepoint
 2024-05-13 14:01:33 -07:00
Linus Torvalds
ef31ea6c27 vfs-6.10.netfs 
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Merge tag 'vfs-6.10.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull netfs updates from Christian Brauner:
 "This reworks the netfslib writeback implementation so that pages read
  from the cache are written to the cache through ->writepages(),
  thereby allowing the fscache page flag to be retired.

  The reworking also:

   - builds on top of the new writeback_iter() infrastructure

   - makes it possible to use vectored write RPCs as discontiguous
     streams of pages can be accommodated

   - makes it easier to do simultaneous content crypto and stream
     division

   - provides support for retrying writes and re-dividing a stream

   - replaces the ->launder_folio() op, so that ->writepages() is used
     instead

   - uses mempools to allocate the netfs_io_request and
     netfs_io_subrequest structs to avoid allocation failure in the
     writeback path

  Some code that uses the fscache page flag is retained for
  compatibility purposes with nfs and ceph. The code is switched to
  using the synonymous private_2 label instead and marked with
  deprecation comments.

  The merge commit contains additional details on the new algorithm that
  I've left out of here as it would probably be excessively detailed.

  On top of the netfslib infrastructure this contains the work to
  convert cifs over to netfslib"

* tag 'vfs-6.10.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
  cifs: Enable large folio support
  cifs: Remove some code that's no longer used, part 3
  cifs: Remove some code that's no longer used, part 2
  cifs: Remove some code that's no longer used, part 1
  cifs: Cut over to using netfslib
  cifs: Implement netfslib hooks
  cifs: Make add_credits_and_wake_if() clear deducted credits
  cifs: Add mempools for cifs_io_request and cifs_io_subrequest structs
  cifs: Set zero_point in the copy_file_range() and remap_file_range()
  cifs: Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c
  cifs: Replace the writedata replay bool with a netfs sreq flag
  cifs: Make wait_mtu_credits take size_t args
  cifs: Use more fields from netfs_io_subrequest
  cifs: Replace cifs_writedata with a wrapper around netfs_io_subrequest
  cifs: Replace cifs_readdata with a wrapper around netfs_io_subrequest
  cifs: Use alternative invalidation to using launder_folio
  netfs, afs: Use writeback retry to deal with alternate keys
  netfs: Miscellaneous tidy ups
  netfs: Remove the old writeback code
  netfs: Cut over to using new writeback code
  ...
 2024-05-13 12:14:03 -07:00
Linus Torvalds
c0b9620bc3 RCU pull request for v6.10 
This pull request contains the following branches:
 
 fixes.2024.04.15a: Fix a lockdep complain for lazy-preemptible kernel,
 remove redundant BH disable for TINY_RCU, remove redundant READ_ONCE()
 in tree.c, fix false positives KCSAN splat and fix buffer overflow in
 the print_cpu_stall_info().
 
 misc.2024.04.12a: Misc updates related to bpf, tracing and update the
 MAINTAINERS file.
 
 rcu-sync-normal-improve.2024.04.15a: An improvement of a normal
 synchronize_rcu() call in terms of latency. It maintains a separate
 track for sync. users only. This approach bypasses per-cpu nocb-lists
 thus sync-users do not depend on nocb-list length and how fast regular
 callbacks are processed.
 
 rcu-tasks.2024.04.15a: RCU tasks, switch tasks RCU grace periods to
 sleep at TASK_IDLE priority, fix some comments, add some diagnostic
 warning to the exit_tasks_rcu_start() and fix a buffer overflow in
 the show_rcu_tasks_trace_gp_kthread().
 
 rcutorture.2024.04.15a: Increase memory to guest OS, fix a Tasks
 Rude RCU testing, some updates for TREE09, dump mode information
 to debug GP kthread state, remove redundant READ_ONCE(), fix some
 comments about RCU_TORTURE_PIPE_LEN and pipe_count, remove some
 redundant pointer initialization, fix a hung splat task by when
 the rcutorture tests start to exit, fix invalid context warning,
 add '--do-kvfree' parameter to torture test and use slow register
 unregister callbacks only for rcutype test.
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Merge tag 'rcu.next.v6.10' of https://github.com/urezki/linux

Pull RCU updates from Uladzislau Rezki:

 - Fix a lockdep complain for lazy-preemptible kernel, remove redundant
   BH disable for TINY_RCU, remove redundant READ_ONCE() in tree.c, fix
   false positives KCSAN splat and fix buffer overflow in the
   print_cpu_stall_info().

 - Misc updates related to bpf, tracing and update the MAINTAINERS file.

 - An improvement of a normal synchronize_rcu() call in terms of
   latency. It maintains a separate track for sync. users only. This
   approach bypasses per-cpu nocb-lists thus sync-users do not depend on
   nocb-list length and how fast regular callbacks are processed.

 - RCU tasks: switch tasks RCU grace periods to sleep at TASK_IDLE
   priority, fix some comments, add some diagnostic warning to the
   exit_tasks_rcu_start() and fix a buffer overflow in the
   show_rcu_tasks_trace_gp_kthread().

 - RCU torture: Increase memory to guest OS, fix a Tasks Rude RCU
   testing, some updates for TREE09, dump mode information to debug GP
   kthread state, remove redundant READ_ONCE(), fix some comments about
   RCU_TORTURE_PIPE_LEN and pipe_count, remove some redundant pointer
   initialization, fix a hung splat task by when the rcutorture tests
   start to exit, fix invalid context warning, add '--do-kvfree'
   parameter to torture test and use slow register unregister callbacks
   only for rcutype test.

* tag 'rcu.next.v6.10' of https://github.com/urezki/linux: (48 commits)
  rcutorture: Use rcu_gp_slow_register/unregister() only for rcutype test
  torture: Scale --do-kvfree test time
  rcutorture: Fix invalid context warning when enable srcu barrier testing
  rcutorture: Make stall-tasks directly exit when rcutorture tests end
  rcutorture: Removing redundant function pointer initialization
  rcutorture: Make rcutorture support print rcu-tasks gp state
  rcutorture: Use the gp_kthread_dbg operation specified by cur_ops
  rcutorture: Re-use value stored to ->rtort_pipe_count instead of re-reading
  rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment
  rcutorture: Remove extraneous rcu_torture_pipe_update_one() READ_ONCE()
  rcu: Allocate WQ with WQ_MEM_RECLAIM bit set
  rcu: Support direct wake-up of synchronize_rcu() users
  rcu: Add a trace event for synchronize_rcu_normal()
  rcu: Reduce synchronize_rcu() latency
  rcu: Fix buffer overflow in print_cpu_stall_info()
  rcu: Mollify sparse with RCU guard
  rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow
  rcu-tasks: Fix the comments for tasks_rcu_exit_srcu_stall_timer
  rcu-tasks: Replace exit_tasks_rcu_start() initialization with WARN_ON_ONCE()
  rcu: Remove redundant CONFIG_PROVE_RCU #if condition
  ...
 2024-05-13 09:49:06 -07:00
Linus Torvalds
14a60290ed soc: drivers for 6.10 
As usual, these are updates for drivers that are specific to certain
 SoCs or firmware running on them. Notable updates include
 
  - The new STMicroelectronics STM32 "firewall" bus driver that is
    used to provide a barrier between different parts of an SoC
 
  - Lots of updates for the Qualcomm platform drivers, in particular
    SCM, which gets a rewrite of its initialization code
 
  - Firmware driver updates for Arm FF-A notification interrupts
    and indirect messaging, SCMI firmware support for pin control
    and vendor specific interfaces, and TEE firmware interface
    changes across multiple TEE drivers
 
  - A larger cleanup of the Mediatek CMDQ driver and some related bits
 
  - Kconfig changes for riscv drivers to prepare for adding Kanaan
    k230 support
 
  - Multiple minor updates for the TI sysc bus driver, memory controllers,
    hisilicon hccs and more
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Merge tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC driver updates from Arnd Bergmann:
 "As usual, these are updates for drivers that are specific to certain
  SoCs or firmware running on them.

  Notable updates include

   - The new STMicroelectronics STM32 "firewall" bus driver that is used
     to provide a barrier between different parts of an SoC

   - Lots of updates for the Qualcomm platform drivers, in particular
     SCM, which gets a rewrite of its initialization code

   - Firmware driver updates for Arm FF-A notification interrupts and
     indirect messaging, SCMI firmware support for pin control and
     vendor specific interfaces, and TEE firmware interface changes
     across multiple TEE drivers

   - A larger cleanup of the Mediatek CMDQ driver and some related bits

   - Kconfig changes for riscv drivers to prepare for adding Kanaan k230
     support

   - Multiple minor updates for the TI sysc bus driver, memory
     controllers, hisilicon hccs and more"

* tag 'soc-drivers-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (103 commits)
  firmware: qcom: uefisecapp: Allow on sc8180x Primus and Flex 5G
  soc: qcom: pmic_glink: Make client-lock non-sleeping
  dt-bindings: soc: qcom,wcnss: fix bluetooth address example
  soc/tegra: pmc: Add EQOS wake event for Tegra194 and Tegra234
  bus: stm32_firewall: fix off by one in stm32_firewall_get_firewall()
  bus: etzpc: introduce ETZPC firewall controller driver
  firmware: arm_ffa: Avoid queuing work when running on the worker queue
  bus: ti-sysc: Drop legacy idle quirk handling
  bus: ti-sysc: Drop legacy quirk handling for smartreflex
  bus: ti-sysc: Drop legacy quirk handling for uarts
  bus: ti-sysc: Add a description and copyrights
  bus: ti-sysc: Move check for no-reset-on-init
  soc: hisilicon: kunpeng_hccs: replace MAILBOX dependency with PCC
  soc: hisilicon: kunpeng_hccs: Add the check for obtaining complete port attribute
  firmware: arm_ffa: Fix memory corruption in ffa_msg_send2()
  bus: rifsc: introduce RIFSC firewall controller driver
  of: property: fw_devlink: Add support for "access-controller"
  soc: mediatek: mtk-socinfo: Correct the marketing name for MT8188GV
  soc: mediatek: mtk-socinfo: Add entry for MT8395AV/ZA Genio 1200
  soc: mediatek: mtk-mutex: Add support for MT8188 VPPSYS
  ...
 2024-05-13 08:48:42 -07:00
Takashi Iwai
3a07362fab ASoC: Updates for v6.10 
This is a very big update, in large part due to extensive work the Intel
 people have been doing in their drivers though it's also been busy
 elsewhere.  There's also a big overhaul of the DAPM documentation from
 Luca Ceresoli arising from the work he did putting together his recent
 ELC talk, and he also contributed a new tool for visualising the DAPM
 state.
 
  - A new tool dapm-graph for visualising the DAPM state.
  - Substantial fixes and clarifications for the DAPM documentation.
  - Very large updates throughout the Intel audio drivers.
  - Cleanups of accessors for driver data, module labelling, and for
    constification.
  - Modernsation and cleanup work in the Mediatek drivers.
  - Several fixes and features for the DaVinci I2S driver.
  - New drivers for several AMD and Intel platforms, Nuvoton NAU8325,
    Rockchip RK3308 and Texas Instruments PCM6240.
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Merge tag 'asoc-v6.10' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v6.10

This is a very big update, in large part due to extensive work the Intel
people have been doing in their drivers though it's also been busy
elsewhere.  There's also a big overhaul of the DAPM documentation from
Luca Ceresoli arising from the work he did putting together his recent
ELC talk, and he also contributed a new tool for visualising the DAPM
state.

 - A new tool dapm-graph for visualising the DAPM state.
 - Substantial fixes and clarifications for the DAPM documentation.
 - Very large updates throughout the Intel audio drivers.
 - Cleanups of accessors for driver data, module labelling, and for
   constification.
 - Modernsation and cleanup work in the Mediatek drivers.
 - Several fixes and features for the DaVinci I2S driver.
 - New drivers for several AMD and Intel platforms, Nuvoton NAU8325,
   Rockchip RK3308 and Texas Instruments PCM6240.
 2024-05-13 11:39:49 +02:00
Bart Van Assche
33580d667b nilfs2: use __field_struct() for a bitwise field 
As one can see in include/trace/stages/stage4_event_fields.h, the
implementation of __field() uses the is_signed_type() macro.  As one can
see in commit dcf8e5633e ("tracing: Define the is_signed_type() macro
once"), there has been an attempt to not make is_signed_type() trigger
sparse warnings for bitwise types.

Despite that change, sparse complains when passing a bitwise type to
is_signed_type().  The reason is that in its definition below, an
inequality comparison will be made against bitwise types, which are random
collections of bits (the casts to bitwise types themselves are
semantically valid and not problematic):

 #define is_signed_type(type) (((type)(-1)) < (__force type)1)

So, as a workaround, follow the example of <trace/events/initcall.h> and
suppress the following sparse warnings by changing __field() into
__field_struct() that doesn't use is_signed_type():

 fs/nilfs2/segment.c: note: in included file (through
   include/trace/trace_events.h, include/trace/define_trace.h,
   include/trace/events/nilfs2.h):
 ./include/trace/events/nilfs2.h:191:1: warning: cast to restricted
   blk_opf_t
 ./include/trace/events/nilfs2.h:191:1: warning: restricted blk_opf_t
   degrades to integer
 ./include/trace/events/nilfs2.h:191:1: warning: restricted blk_opf_t
   degrades to integer

[konishi.ryusuke: describe the reason for the warnings per Linus's explanation]
  Link: https://lkml.kernel.org/r/20240507222041.4876-1-konishi.ryusuke@gmail.com
Link: https://lkml.kernel.org/r/20240507142454.3344-1-konishi.ryusuke@gmail.com
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401092241.I4mm9OWl-lkp@intel.com/
Reported-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Closes: https://lore.kernel.org/all/20240430080019.4242-2-konishi.ryusuke@gmail.com/
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-11 15:51:43 -07:00
Paolo Bonzini
4232da23d7 Merge tag 'loongarch-kvm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD 
LoongArch KVM changes for v6.10

1. Add ParaVirt IPI support.
2. Add software breakpoint support.
3. Add mmio trace events support.
 2024-05-10 13:20:18 -04:00
Pierre-Louis Bossart
ea89a742da ALSA/ASoC: include: clarify Copyright information 
For some reason a number of files included the "All rights reserved"
statement. Good old copy-paste made sure this mistake proliferated.

Remove the "All rights reserved" in all Intel-copyright to align with
internal guidance.

Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20240503140359.259762-10-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2024-05-09 20:26:34 +02:00
Peilin He
db3efdcf70 net/ipv4: add tracepoint for icmp_send 
Introduce a tracepoint for icmp_send, which can help users to get more
detail information conveniently when icmp abnormal events happen.

1. Giving an usecase example:
=============================
When an application experiences packet loss due to an unreachable UDP
destination port, the kernel will send an exception message through the
icmp_send function. By adding a trace point for icmp_send, developers or
system administrators can obtain detailed information about the UDP
packet loss, including the type, code, source address, destination address,
source port, and destination port. This facilitates the trouble-shooting
of UDP packet loss issues especially for those network-service
applications.

2. Operation Instructions:
==========================
Switch to the tracing directory.
        cd /sys/kernel/tracing
Filter for destination port unreachable.
        echo "type==3 && code==3" > events/icmp/icmp_send/filter
Enable trace event.
        echo 1 > events/icmp/icmp_send/enable

3. Result View:
================
 udp_client_erro-11370   [002] ...s.12   124.728002:
 icmp_send: icmp_send: type=3, code=3.
 From 127.0.0.1:41895 to 127.0.0.1:6666 ulen=23
 skbaddr=00000000589b167a

Signed-off-by: Peilin He <he.peilin@zte.com.cn>
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Reviewed-by: Yunkai Zhang <zhang.yunkai@zte.com.cn>
Cc: Yang Yang <yang.yang29@zte.com.cn>
Cc: Liu Chun <liu.chun2@zte.com.cn>
Cc: Xuexin Jiang <jiang.xuexin@zte.com.cn>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2024-05-08 10:39:26 +01:00
Filipe Manana
0d89a15e1a btrfs: add tracepoints for extent map shrinker events 
Add some tracepoints for the extent map shrinker to help debug and analyse
main events. These have proved useful during development of the shrinker.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:07 +02:00
Josef Bacik
efc7d5dbf8 btrfs: stop referencing btrfs_delayed_tree_ref directly 
We only ever need to use this to get the level of the tree block ref, so
use the btrfs_delayed_ref_owner() helper, which returns the level for
the given reference.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:05 +02:00
Josef Bacik
44cc2e38e6 btrfs: stop referencing btrfs_delayed_data_ref directly 
Now that most of our elements are inside of btrfs_delayed_ref_node
directly and we have helpers for the delayed_data_ref bits, go ahead and
remove all direct usage of btrfs_delayed_data_ref and use the helpers
where needed.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:05 +02:00
Josef Bacik
cf4f04325b btrfs: move ->parent and ->ref_root into btrfs_delayed_ref_node 
These two members are shared by both the tree refs and data refs, so
move them into btrfs_delayed_ref_node proper.  This allows us to greatly
simplify the comparison code, as the shared refs always only sort on
parent, and the non shared refs always sort first on ref_root, and then
only data refs sort on their specific fields.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:05 +02:00
Josef Bacik
1bff6d4f87 btrfs: simplify delayed ref tracepoints 
Now that all of the delayed ref information is in the delayed ref node,
drastically simplify the delayed ref tracepoints by simply passing in
the btrfs_delayed_ref_node and populating the tracepoints with the
values from the structure itself.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:04 +02:00
Filipe Manana
2e438442ba btrfs: remove not needed mod_start and mod_len from struct extent_map 
The mod_start and mod_len fields of struct extent_map were introduced by
commit 4e2f84e63d ("Btrfs: improve fsync by filtering extents that we
want") in order to avoid too low performance when fsyncing a file that
keeps getting extent maps merge, because it resulted in each fsync logging
again csum ranges that were already merged before.

We don't need this anymore as extent maps in the list of modified extents
are never merged with other extent maps and once we log an extent map we
remove it from the list of modified extent maps, so it's never logged
twice.

So remove the mod_start and mod_len fields from struct extent_map and use
instead the start and len fields when logging checksums in the fast fsync
path. This also makes EXTENT_FLAG_FILLING unused so remove it as well.

Running the reproducer from the commit mentioned before, with a larger
number of extents and against a null block device, so that IO is fast
and we can better see any impact from searching checksums items and
logging them, gave the following results from dd:

Before this change:

   409600000 bytes (410 MB, 391 MiB) copied, 22.948 s, 17.8 MB/s

After this change:

   409600000 bytes (410 MB, 391 MiB) copied, 22.9997 s, 17.8 MB/s

So no changes in throughput.
The test was done in a release kernel (non-debug, Debian's default kernel
config) and its steps are the following:

   $ mkfs.btrfs -f /dev/nullb0
   $ mount /dev/sdb /mnt
   $ dd if=/dev/zero of=/mnt/foobar bs=4k count=100000 oflag=sync
   $ umount /mnt

This also reduces the size of struct extent_map from 128 bytes down to 112
bytes, so now we can have 36 extents maps per 4K page instead of 32.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2024-05-07 21:31:02 +02:00
Trond Myklebust
939cb14d51 NFS/knfsd: Remove the invalid NFS error 'NFSERR_OPNOTSUPP' 
NFSERR_OPNOTSUPP is not described by any RFC, and should not be used.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-05-06 12:47:24 -04:00
Takashi Sakamoto
5a5dc48083 firewire: core: remove flag and width from u64 formats of tracepoints events 
The pointer to fw_packet structure is passed to ring buffer of tracepoints
framework as the value of u64 type. '0x%016llx' is used for the print
format of value, while the flag and width are useless in the case.

This commit removes them.

Link: https://lore.kernel.org/r/20240506082154.396077-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 17:53:35 +09:00
Takashi Sakamoto
87144bbc99 firewire: core: fix type of timestamp for async_inbound_template tracepoints events 
The type of time stamp should be u16, instead of u8.

Link: https://lore.kernel.org/r/20240506082154.396077-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 17:53:34 +09:00
Takashi Sakamoto
6b0b708f12 firewire: core: add tracepoint event for handling bus reset 
The core function expects hardware drivers to call
fw_core_handle_bus_reset() when changing bus topology. The 1394 OHCI
driver calls it when handling selfID event as a result of any bus-reset.

This commit adds a tracepoints event for it.

Link: https://lore.kernel.org/r/20240501073238.72769-6-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:06 +09:00
Takashi Sakamoto
08dd8602aa firewire: core: add tracepoints events for initiating bus reset 
At a commit 673249124304 ("firewire: core: option to log bus reset
initiation"), some kernel log messages were added to trace initiation of
bus reset. The kernel log messages are really helpful, while nowadays it
is not preferable just for debugging purpose. For the purpose, Linux
kernel tracepoints is more preferable.

This commit adds some alternative tracepoints events.

Link: https://lore.kernel.org/r/20240501073238.72769-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:06 +09:00
Takashi Sakamoto
eec045c571 firewire: core: add tracepoints event for asynchronous inbound phy packet 
At the former commit, a pair of tracepoints events is added to trace
asynchronous outbound phy packet. This commit adds a tracepoints event
to trace inbound phy packet. It includes transaction status as well as
the content of phy packet.

This is an example for Remote Reply Packet as a response to Remote Access
Packet sent by lsfirewirephy command in linux-firewire-utils:

async_phy_inbound: \
  packet=0xffff955fc02b4e10 generation=1 status=1 timestamp=0x0619 \
  first_quadlet=0x001c8208 second_quadlet=0xffe37df7

Link: https://lore.kernel.org/r/20240430001404.734657-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
1a4c53cf35 firewire: core/cdev: add tracepoints events for asynchronous phy packet 
In IEEE 1394 bus, the type of asynchronous packet without any offset to
node address space is called as phy packet. The destination of packet is
IEEE 1394 phy itself. This type of packet is used for several purposes,
mainly for selfID at the state of bus reset, to force selection of root
node, and to adjust gap count.

This commit adds tracepoints events for the type of asynchronous outbound
packet. Like asynchronous outbound transaction packets, a pair of events
are added to trace initiation and completion of transmission.

In the case that the phy packet is sent by kernel API, the match between
the initiation and completion is not so easy, since the data of
'struct fw_packet' is allocated statically. In the case that it is sent by
userspace applications via cdev, the match is easy, since the data is
allocated per each.

This example is for Remote Access Packet by lsfirewirephy command in
linux-firewire-utils:

async_phy_outbound_initiate: \
  packet=0xffff89fb34e42e78 generation=1 first_quadlet=0x00148200 \
  second_quadlet=0xffeb7dff
async_phy_outbound_complete: \
  packet=0xffff89fb34e42e78 generation=1 status=1 timestamp=0x0619

Link: https://lore.kernel.org/r/20240430001404.734657-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
624a8535f7 firewire: core: add tracepoints events for asynchronous outbound response 
In a view of core transaction service, the asynchronous outbound response
consists of two stages; initiation and completion.

This commit adds a pair of events for the asynchronous outbound response.
The following example is for asynchronous write quadlet request as IEC
61883-1 FCP response to node 0xffc1.

async_response_outbound_initiate: \
  transaction=0xffff89fa08cf16c0 generation=4 scode=2 dst_id=0xffc1 \
  tlabel=25 tcode=2 src_id=0xffc0 rcode=0 \
  header={0xffc16420,0xffc00000,0x0,0x0} data={}
async_response_outbound_complete: \
  transaction=0xffff89fa08cf16c0 generation=4 scode=2 status=1 \
  timestamp=0x0000

Link: https://lore.kernel.org/r/20240429043218.609398-6-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
2c945b10d7 firewire: core: add tracepoint event for asynchronous inbound request 
This commit adds an event for asynchronous inbound request.

The following example is for asynchronous block write request as IEC
61883-1 FCP request from node 0xffc1.

async_request_inbound: \
  transaction=0xffff89fa08cf16c0 generation=4 scode=2 status=2 \
  timestamp=0x00b3 dst_id=0xffc0 tlabel=19 tcode=1 src_id=0xffc1 \
  offset=0xfffff0000d00 header={0xffc04d10,0xffc1ffff,0xf0000d00,0x80000} \
  data={0x19ff08,0xffff0090}

Link: https://lore.kernel.org/r/20240429043218.609398-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
06cc078c07 firewire: core: add tracepoints event for asynchronous inbound response 
In the transaction of IEEE 1394, the node to receive the asynchronous
request transfers any response packet to the requester except for the
unified transaction.

This commit adds an event for the inbound packet. Note that the code to
decode the packet header is moved, against the note about the sanity
check.

The following example is for asynchronous lock response with
compare_and_swap code.

async_response_inbound: \
  transaction=0xffff955fc6a07a10 generation=5 scode=2 status=1 \
  timestamp=0x0089 dst_id=0xffc1 tlabel=54 tcode=11 src_id=0xffc0 \
  rcode=0 header={0xffc1d9b0,0xffc00000,0x0,0x40002} data={0x50800080}

Link: https://lore.kernel.org/r/20240429043218.609398-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
944b06840a firewire: core: add tracepoints events for asynchronous outbound request 
In a view of core transaction service, the asynchronous outbound request
consists of two stages; initiation and completion. This commit adds a pair
of event for them.

The following example is for asynchronous lock request with compare_swap
code to offset 0x'ffff'f000'0904 in node 0xffc0.

async_request_outbound_initiate: \
  transaction=0xffff955fc6a07a10 generation=5 scode=2 dst_id=0xffc0 \
  tlabel=54 tcode=9 src_id=0xffc1 offset=0xfffff0000904 \
  header={0xffc0d990,0xffc1ffff,0xf0000904,0x80002}
  data={0x80,0x940181}
async_request_outbound_complete: \
  transaction=0xffff955fc6a07a10 generation=5 scode=2 status=2 \
  timestamp=0xd887

Link: https://lore.kernel.org/r/20240429043218.609398-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
Takashi Sakamoto
57614c2884 firewire: core: add support for Linux kernel tracepoints 
The Linux Kernel Tracepoints framework is enough useful to trace
packet data inbound to and outbound from core.

This commit adds firewire subsystem to use the framework.

Link: https://lore.kernel.org/r/20240429043218.609398-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
 2024-05-06 11:06:05 +09:00
David Hildenbrand
6eca325674 trace/events/page_ref: trace the raw page mapcount value 
We want to limit the use of page_mapcount() to the places where it is
absolutely necessary.  We already trace raw page->refcount, raw
page->flags and raw page->mapping, and don't involve any folios.  Let's
also trace the raw mapcount value that does not consider the entire
mapcount of large folios, and we don't add "1" to it.

When dealing with typed folios, this makes a lot more sense.  ...  and
it's for debugging purposes only either way.

Link: https://lkml.kernel.org/r/20240409192301.907377-16-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Richard Chang <richardycc@google.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-05-05 17:53:31 -07:00
Jakub Kicinski
e958da0ddb Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR.

Conflicts:

include/linux/filter.h
kernel/bpf/core.c
  66e13b615a ("bpf: verifier: prevent userspace memory access")
  d503a04f8b ("bpf: Add support for certain atomics in bpf_arena to x86 JIT")
https://lore.kernel.org/all/20240429114939.210328b0@canb.auug.org.au/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-05-02 12:06:25 -07:00
David Howells
69c3c023af cifs: Implement netfslib hooks 
Provide implementation of the netfslib hooks that will be used by netfslib
to ask cifs to set up and perform operations.  Of particular note are

 (*) cifs_clamp_length() - This is used to negotiate the size of the next
     subrequest in a read request, taking into account the credit available
     and the rsize.  The credits are attached to the subrequest.

 (*) cifs_req_issue_read() - This is used to issue a subrequest that has
     been set up and clamped.

 (*) cifs_prepare_write() - This prepares to fill a subrequest by picking a
     channel, reopening the file and requesting credits so that we can set
     the maximum size of the subrequest and also sets the maximum number of
     segments if we're doing RDMA.

 (*) cifs_issue_write() - This releases any unneeded credits and issues an
     asynchronous data write for the contiguous slice of file covered by
     the subrequest.  This should possibly be folded in to all
     ->async_writev() ops and that called directly.

 (*) cifs_begin_writeback() - This gets the cached writable handle through
     which we do writeback (this does not affect writethrough, unbuffered
     or direct writes).

At this point, cifs is not wired up to actually *use* netfslib; that will
be done in a subsequent patch.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2024-05-01 18:08:21 +01:00
David Howells
d41ca44c20 netfs: Miscellaneous tidy ups 
Do a couple of miscellaneous tidy ups:

 (1) Add a qualifier into a file banner comment.

 (2) Put the writeback folio traces back into alphabetical order.

 (3) Remove some unused folio traces.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
 2024-05-01 18:07:38 +01:00
David Howells
288ace2f57 netfs: New writeback implementation 
The current netfslib writeback implementation creates writeback requests of
contiguous folio data and then separately tiles subrequests over the space
twice, once for the server and once for the cache.  This creates a few
issues:

 (1) Every time there's a discontiguity or a change between writing to only
     one destination or writing to both, it must create a new request.
     This makes it harder to do vectored writes.

 (2) The folios don't have the writeback mark removed until the end of the
     request - and a request could be hundreds of megabytes.

 (3) In future, I want to support a larger cache granularity, which will
     require aggregation of some folios that contain unmodified data (which
     only need to go to the cache) and some which contain modifications
     (which need to be uploaded and stored to the cache) - but, currently,
     these are treated as discontiguous.

There's also a move to get everyone to use writeback_iter() to extract
writable folios from the pagecache.  That said, currently writeback_iter()
has some issues that make it less than ideal:

 (1) there's no way to cancel the iteration, even if you find a "temporary"
     error that means the current folio and all subsequent folios are going
     to fail;

 (2) there's no way to filter the folios being written back - something
     that will impact Ceph with it's ordered snap system;

 (3) and if you get a folio you can't immediately deal with (say you need
     to flush the preceding writes), you are left with a folio hanging in
     the locked state for the duration, when really we should unlock it and
     relock it later.

In this new implementation, I use writeback_iter() to pump folios,
progressively creating two parallel, but separate streams and cleaning up
the finished folios as the subrequests complete.  Either or both streams
can contain gaps, and the subrequests in each stream can be of variable
size, don't need to align with each other and don't need to align with the
folios.

Indeed, subrequests can cross folio boundaries, may cover several folios or
a folio may be spanned by multiple folios, e.g.:

         +---+---+-----+-----+---+----------+
Folios:  |   |   |     |     |   |          |
         +---+---+-----+-----+---+----------+

           +------+------+     +----+----+
Upload:    |      |      |.....|    |    |
           +------+------+     +----+----+

         +------+------+------+------+------+
Cache:   |      |      |      |      |      |
         +------+------+------+------+------+

The progressive subrequest construction permits the algorithm to be
preparing both the next upload to the server and the next write to the
cache whilst the previous ones are already in progress.  Throttling can be
applied to control the rate of production of subrequests - and, in any
case, we probably want to write them to the server in ascending order,
particularly if the file will be extended.

Content crypto can also be prepared at the same time as the subrequests and
run asynchronously, with the prepped requests being stalled until the
crypto catches up with them.  This might also be useful for transport
crypto, but that happens at a lower layer, so probably would be harder to
pull off.

The algorithm is split into three parts:

 (1) The issuer.  This walks through the data, packaging it up, encrypting
     it and creating subrequests.  The part of this that generates
     subrequests only deals with file positions and spans and so is usable
     for DIO/unbuffered writes as well as buffered writes.

 (2) The collector. This asynchronously collects completed subrequests,
     unlocks folios, frees crypto buffers and performs any retries.  This
     runs in a work queue so that the issuer can return to the caller for
     writeback (so that the VM can have its kswapd thread back) or async
     writes.

 (3) The retryer.  This pauses the issuer, waits for all outstanding
     subrequests to complete and then goes through the failed subrequests
     to reissue them.  This may involve reprepping them (with cifs, the
     credits must be renegotiated, and a subrequest may need splitting),
     and doing RMW for content crypto if there's a conflicting change on
     the server.

[!] Note that some of the functions are prefixed with "new_" to avoid
clashes with existing functions.  These will be renamed in a later patch
that cuts over to the new algorithm.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
 2024-05-01 18:07:36 +01:00
David Howells
7ba167c4c7 netfs: Switch to using unsigned long long rather than loff_t 
Switch to using unsigned long long rather than loff_t in netfslib to avoid
problems with the sign flipping in the maths when we're dealing with the
byte at position 0x7fffffffffffffff.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: Xiubo Li <xiubli@redhat.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
 2024-05-01 18:07:35 +01:00
David Howells
b4ff7b178b netfs: Remove ->launder_folio() support 
Remove support for ->launder_folio() from netfslib and expect filesystems
to use filemap_invalidate_inode() instead.  netfs_launder_folio() can then
be got rid of.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Steve French <sfrench@samba.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-mm@kvack.org
cc: linux-fsdevel@vger.kernel.org
cc: netfs@lists.linux.dev
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: devel@lists.orangefs.org
 2024-05-01 18:07:34 +01:00
Mark Brown
9f6bdb0aa1
ASoC: doc: dapm: various improvements 
Merge series from Luca Ceresoli <luca.ceresoli@bootlin.com>:

This series applies various improvements to the DAPM documentation: a
rewrite of a few sections for clarity, style improvements and typo fixes.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
Changes in v2:
- avoid wrapping in patch 3 as suggested by Alex
- Link to v1: https://lore.kernel.org/r/20240416-dapm-docs-v1-0-a818d2819bf6@bootlin.com

---
Luca Ceresoli (12):
      ASoC: doc: dapm: fix typos
      ASoC: doc: dapm: fix struct name
      ASoC: doc: dapm: minor rewording
      ASoC: doc: dapm: remove dash after colon
      ASoC: doc: dapm: clarify it's an internal API
      ASoC: doc: dapm: replace "map" with "graph"
      ASoC: doc: dapm: extend initial descrption
      ASoC: doc: dapm: describe how widgets and routes are registered
      ASoC: doc: dapm: fix and improve section "Registering DAPM controls"
      ASoC: doc: dapm: improve section "Codec/DSP Widget Interconnections"
      ASoC: doc: dapm: update section "DAPM Widget Events"
      ASoC: doc: dapm: update event types

 Documentation/sound/soc/dapm-graph.svg | 375 +++++++++++++++++++++++++++++++++
 Documentation/sound/soc/dapm.rst       | 174 ++++++++++-----
 2 files changed, 492 insertions(+), 57 deletions(-)
---
base-commit: c942a0cd36
change-id: 20240315-dapm-docs-79bd51f267db

Best regards,
--
Luca Ceresoli <luca.ceresoli@bootlin.com>
 2024-05-01 00:00:17 +09:00
Jakub Kicinski
89de2db193 bpf-next-for-netdev 
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2024-04-29

We've added 147 non-merge commits during the last 32 day(s) which contain
a total of 158 files changed, 9400 insertions(+), 2213 deletions(-).

The main changes are:

1) Add an internal-only BPF per-CPU instruction for resolving per-CPU
   memory addresses and implement support in x86 BPF JIT. This allows
   inlining per-CPU array and hashmap lookups
   and the bpf_get_smp_processor_id() helper, from Andrii Nakryiko.

2) Add BPF link support for sk_msg and sk_skb programs, from Yonghong Song.

3) Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
   atomics in bpf_arena which can be JITed as a single x86 instruction,
   from Alexei Starovoitov.

4) Add support for passing mark with bpf_fib_lookup helper,
   from Anton Protopopov.

5) Add a new bpf_wq API for deferring events and refactor sleepable
   bpf_timer code to keep common code where possible,
   from Benjamin Tissoires.

6) Fix BPF_PROG_TEST_RUN infra with regards to bpf_dummy_struct_ops programs
   to check when NULL is passed for non-NULLable parameters,
   from Eduard Zingerman.

7) Harden the BPF verifier's and/or/xor value tracking,
   from Harishankar Vishwanathan.

8) Introduce crypto kfuncs to make BPF programs able to utilize the kernel
   crypto subsystem, from Vadim Fedorenko.

9) Various improvements to the BPF instruction set standardization doc,
   from Dave Thaler.

10) Extend libbpf APIs to partially consume items from the BPF ringbuffer,
    from Andrea Righi.

11) Bigger batch of BPF selftests refactoring to use common network helpers
    and to drop duplicate code, from Geliang Tang.

12) Support bpf_tail_call_static() helper for BPF programs with GCC 13,
    from Jose E. Marchesi.

13) Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
    program to have code sections where preemption is disabled,
    from Kumar Kartikeya Dwivedi.

14) Allow invoking BPF kfuncs from BPF_PROG_TYPE_SYSCALL programs,
    from David Vernet.

15) Extend the BPF verifier to allow different input maps for a given
    bpf_for_each_map_elem() helper call in a BPF program, from Philo Lu.

16) Add support for PROBE_MEM32 and bpf_addr_space_cast instructions
    for riscv64 and arm64 JITs to enable BPF Arena, from Puranjay Mohan.

17) Shut up a false-positive KMSAN splat in interpreter mode by unpoison
    the stack memory, from Martin KaFai Lau.

18) Improve xsk selftest coverage with new tests on maximum and minimum
    hardware ring size configurations, from Tushar Vyavahare.

19) Various ReST man pages fixes as well as documentation and bash completion
    improvements for bpftool, from Rameez Rehman & Quentin Monnet.

20) Fix libbpf with regards to dumping subsequent char arrays,
    from Quentin Deslandes.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (147 commits)
  bpf, docs: Clarify PC use in instruction-set.rst
  bpf_helpers.h: Define bpf_tail_call_static when building with GCC
  bpf, docs: Add introduction for use in the ISA Internet Draft
  selftests/bpf: extend BPF_SOCK_OPS_RTT_CB test for srtt and mrtt_us
  bpf: add mrtt and srtt as BPF_SOCK_OPS_RTT_CB args
  selftests/bpf: dummy_st_ops should reject 0 for non-nullable params
  bpf: check bpf_dummy_struct_ops program params for test runs
  selftests/bpf: do not pass NULL for non-nullable params in dummy_st_ops
  selftests/bpf: adjust dummy_st_ops_success to detect additional error
  bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable
  selftests/bpf: Add ring_buffer__consume_n test.
  bpf: Add bpf_guard_preempt() convenience macro
  selftests: bpf: crypto: add benchmark for crypto functions
  selftests: bpf: crypto skcipher algo selftests
  bpf: crypto: add skcipher to bpf crypto
  bpf: make common crypto API for TC/XDP programs
  bpf: update the comment for BTF_FIELDS_MAX
  selftests/bpf: Fix wq test.
  selftests/bpf: Use make_sockaddr in test_sock_addr
  selftests/bpf: Use connect_to_addr in test_sock_addr
  ...
====================

Link: https://lore.kernel.org/r/20240429131657.19423-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-04-29 13:12:19 -07:00
David Howells
2ff1e97587 netfs: Replace PG_fscache by setting folio->private and marking dirty 
When dirty data is being written to the cache, setting/waiting on/clearing
the fscache flag is always done in tandem with setting/waiting on/clearing
the writeback flag.  The netfslib buffered write routines wait on and set
both flags and the write request cleanup clears both flags, so the fscache
flag is almost superfluous.

The reason it isn't superfluous is because the fscache flag is also used to
indicate that data just read from the server is being written to the cache.
The flag is used to prevent a race involving overlapping direct-I/O writes
to the cache.

Change this to indicate that a page is in need of being copied to the cache
by placing a magic value in folio->private and marking the folios dirty.
Then when the writeback code sees a folio marked in this way, it only
writes it to the cache and not to the server.

If a folio that has this magic value set is modified, the value is just
replaced and the folio will then be uplodaded too.

With this, PG_fscache is no longer required by the netfslib core, 9p and
afs.

Ceph and nfs, however, still need to use the old PG_fscache-based tracking.
To deal with this, a flag, NETFS_ICTX_USE_PGPRIV2, now has to be set on the
flags in the netfs_inode struct for those filesystems.  This reenables the
use of PG_fscache in that inode.  9p and afs use the netfslib write helpers
so get switched over; cifs, for the moment, does page-by-page manual access
to the cache, so doesn't use PG_fscache and is unaffected.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Matthew Wilcox (Oracle) <willy@infradead.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: Xiubo Li <xiubli@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
cc: Shyam Prasad N <sprasad@microsoft.com>
cc: Tom Talpey <tom@talpey.com>
cc: Bharath SM <bharathsm@microsoft.com>
cc: Trond Myklebust <trond.myklebust@hammerspace.com>
cc: Anna Schumaker <anna@kernel.org>
cc: netfs@lists.linux.dev
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: linux-nfs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2024-04-29 15:01:42 +01:00
Jithu Joseph
15b429f4e0 platform/x86/intel/ifs: trace: display batch num in hex 
In Field Scan test image files are named in ff-mm-ss-<batch02x>.scan
format. Current trace output, prints the batch number in decimal format.

Make it easier to correlate the trace line to a test image file by
showing the batch number also in hex format.

Add 0x prefix to all fields in the trace line to make the type explicit.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/r/20240412172349.544064-3-jithu.joseph@intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
 2024-04-29 10:52:02 +02:00
Linus Torvalds
e6ebf01172 11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address 
post-6.8 issues or aren't considered suitable for backporting.
 
 All except one of these are for MM.  I see no particular theme - it's
 singletons all over.
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Merge tag 'mm-hotfixes-stable-2024-04-26-13-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address
  post-6.8 issues or aren't considered suitable for backporting.

  All except one of these are for MM. I see no particular theme - it's
  singletons all over"

* tag 'mm-hotfixes-stable-2024-04-26-13-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio()
  selftests: mm: protection_keys: save/restore nr_hugepages value from launch script
  stackdepot: respect __GFP_NOLOCKDEP allocation flag
  hugetlb: check for anon_vma prior to folio allocation
  mm: zswap: fix shrinker NULL crash with cgroup_disable=memory
  mm: turn folio_test_hugetlb into a PageType
  mm: support page_mapcount() on page_has_type() pages
  mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
  mm/hugetlb: fix missing hugetlb_lock for resv uncharge
  selftests: mm: fix unused and uninitialized variable warning
  selftests/harness: remove use of LINE_MAX
 2024-04-26 13:48:03 -07:00
Jason Xing
b533fb9cf4 rstreason: make it work in trace world 
At last, we should let it work by introducing this reset reason in
trace world.

One of the possible expected outputs is:
... tcp_send_reset: skbaddr=xxx skaddr=xxx src=xxx dest=xxx
state=TCP_ESTABLISHED reason=NOT_SPECIFIED

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-04-26 15:34:01 +02:00
Matthew Wilcox (Oracle)
43849758fd khugepaged: use a folio throughout hpage_collapse_scan_file() 
Replace the use of pages with folios.  Saves a few calls to
compound_head() and removes some uses of obsolete functions.

Link: https://lkml.kernel.org/r/20240403171838.1445826-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-04-25 20:56:34 -07:00
Matthew Wilcox (Oracle)
610ff817b9 khugepaged: remove hpage from collapse_file() 
Use new_folio throughout where we had been using hpage.

Link: https://lkml.kernel.org/r/20240403171838.1445826-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-04-25 20:56:33 -07:00
Matthew Wilcox (Oracle)
c93012d849 dax: use huge_zero_folio 
Convert from huge_zero_page to huge_zero_folio.

Link: https://lkml.kernel.org/r/20240326202833.523759-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-04-25 20:56:20 -07:00
Matthew Wilcox (Oracle)
46df8e73a4 mm: free up PG_slab 
Reclaim the Slab page flag by using a spare bit in PageType.  We are
perennially short of page flags for various purposes, and now that the
original SLAB allocator has been retired, SLUB does not use the
mapcount/page_type field.  This lets us remove a number of special cases
for ignoring mapcount on Slab pages.

[willy@infradead.org: update vmcoreinfo]
  Link: https://lkml.kernel.org/r/ZgGV-O8WYQ_83kxp@casper.infradead.org
Link: https://lkml.kernel.org/r/20240321142448.1645400-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-04-25 20:56:00 -07:00
Matthew Wilcox (Oracle)
d99e3140a4 mm: turn folio_test_hugetlb into a PageType 
The current folio_test_hugetlb() can be fooled by a concurrent folio split
into returning true for a folio which has never belonged to hugetlbfs. 
This can't happen if the caller holds a refcount on it, but we have a few
places (memory-failure, compaction, procfs) which do not and should not
take a speculative reference.

Since hugetlb pages do not use individual page mapcounts (they are always
fully mapped and use the entire_mapcount field to record the number of
mappings), the PageType field is available now that page_mapcount()
ignores the value in this field.

In compaction and with CONFIG_DEBUG_VM enabled, the current implementation
can result in an oops, as reported by Luis. This happens since 9c5ccf2db0
("mm: remove HUGETLB_PAGE_DTOR") effectively added some VM_BUG_ON() checks
in the PageHuge() testing path.

[willy@infradead.org: update vmcoreinfo]
  Link: https://lkml.kernel.org/r/ZgGZUvsdhaT1Va-T@casper.infradead.org
Link: https://lkml.kernel.org/r/20240321142448.1645400-6-willy@infradead.org
Fixes: 9c5ccf2db0 ("mm: remove HUGETLB_PAGE_DTOR")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Luis Chamberlain <mcgrof@kernel.org>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218227
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-04-24 19:34:26 -07:00
Vincent Guittot
d4dbc99171 sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure() 
Now that cpufreq provides a pressure value to the scheduler, rename
arch_update_thermal_pressure into HW pressure to reflect that it returns
a pressure applied by HW (i.e. with a high frequency change) and not
always related to thermal mitigation but also generated by max current
limitation as an example. Such high frequency signal needs filtering to be
smoothed and provide an value that reflects the average available capacity
into the scheduler time scale.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Qais Yousef <qyousef@layalina.io>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20240326091616.3696851-5-vincent.guittot@linaro.org
 2024-04-24 12:08:01 +02:00
Chao Yu
92f750d847 f2fs: convert f2fs__page tracepoint class to use folio 
Convert f2fs__page tracepoint class() and its instances to use folio
and related functionality, and rename it to f2fs__folio().

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
 2024-04-19 17:57:10 +00:00
Jakub Kicinski
41e3ddb291 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR.

Conflicts:

include/trace/events/rpcgss.h
  386f4a7379 ("trace: events: cleanup deprecated strncpy uses")
  a4833e3aba ("SUNRPC: Fix rpcgss_context trace event acceptor field")

Adjacent changes:

drivers/net/ethernet/intel/ice/ice_tc_lib.c
  2cca35f5dd ("ice: Fix checking for unsupported keys on non-tunnel device")
  784feaa65d ("ice: Add support for PFCP hardware offload in switchdev")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-04-18 13:12:24 -07:00
Jesper Dangaard Brouer
fc29e04ae1 cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints 
This commit enhances the ability to troubleshoot the global
cgroup_rstat_lock by introducing wrapper helper functions for the lock
along with associated tracepoints.

Although global, the cgroup_rstat_lock helper APIs and tracepoints take
arguments such as cgroup pointer and cpu_in_loop variable. This
adjustment is made because flushing occurs per cgroup despite the lock
being global. Hence, when troubleshooting, it's important to identify the
relevant cgroup. The cpu_in_loop variable is necessary because the global
lock may be released within the main flushing loop that traverses CPUs.
In the tracepoints, the cpu_in_loop value is set to -1 when acquiring the
main lock; otherwise, it denotes the CPU number processed last.

The new feature in this patchset is detecting when lock is contended. The
tracepoints are implemented with production in mind. For minimum overhead
attach to cgroup:cgroup_rstat_lock_contended, which only gets activated
when trylock detects lock is contended. A quick production check for
issues could be done via this perf commands:

 perf record -g -e cgroup:cgroup_rstat_lock_contended

Next natural question would be asking how long time do lock contenders
wait for obtaining the lock. This can be answered by measuring the time
between cgroup:cgroup_rstat_lock_contended and cgroup:cgroup_rstat_locked
when args->contended is set.  Like this bpftrace script:

 bpftrace -e '
   tracepoint:cgroup:cgroup_rstat_lock_contended {@start[tid]=nsecs}
   tracepoint:cgroup:cgroup_rstat_locked {
     if (args->contended) {
       @wait_ns=hist(nsecs-@start[tid]); delete(@start[tid]);}}
   interval:s:1 {time("%H:%M:%S "); print(@wait_ns); }'

Extending with time spend holding the lock will be more expensive as this
also looks at all the non-contended cases.
Like this bpftrace script:

 bpftrace -e '
   tracepoint:cgroup:cgroup_rstat_lock_contended {@start[tid]=nsecs}
   tracepoint:cgroup:cgroup_rstat_locked { @locked[tid]=nsecs;
     if (args->contended) {
       @wait_ns=hist(nsecs-@start[tid]); delete(@start[tid]);}}
   tracepoint:cgroup:cgroup_rstat_unlock {
       @locked_ns=hist(nsecs-@locked[tid]); delete(@locked[tid]);}
   interval:s:1 {time("%H:%M:%S ");  print(@wait_ns);print(@locked_ns); }'

Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2024-04-16 12:10:42 -10:00
Steven Rostedt
58300f8d6a
ASoC: tracing: Export SND_SOC_DAPM_DIR_OUT to its value 
The string SND_SOC_DAPM_DIR_OUT is printed in the snd_soc_dapm_path trace
event instead of its value:

   (((REC->path_dir) == SND_SOC_DAPM_DIR_OUT) ? "->" : "<-")

User space cannot parse this, as it has no idea what SND_SOC_DAPM_DIR_OUT
is. Use TRACE_DEFINE_ENUM() to convert it to its value:

   (((REC->path_dir) == 1) ? "->" : "<-")

So that user space tools, such as perf and trace-cmd, can parse it
correctly.

Reported-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Fixes: 6e588a0d83 ("ASoC: dapm: Consolidate path trace events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240416000303.04670cdf@rorschach.local.home
Signed-off-by: Mark Brown <broonie@kernel.org>
 2024-04-16 20:00:18 +09:00
Linus Torvalds
96fca68c4f nfsd-6.9 fixes: 
- Fix a potential tracepoint crash
 - Fix NFSv4 GETATTR on big-endian platforms
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Merge tag 'nfsd-6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:

 - Fix a potential tracepoint crash

 - Fix NFSv4 GETATTR on big-endian platforms

* tag 'nfsd-6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  NFSD: fix endianness issue in nfsd4_encode_fattr4
  SUNRPC: Fix rpcgss_context trace event acceptor field
 2024-04-15 14:09:47 -07:00
Uladzislau Rezki (Sony)
2053937a31 rcu: Add a trace event for synchronize_rcu_normal() 
Add an rcu_sr_normal() trace event. It takes three arguments
first one is the name of RCU flavour, second one is a user id
which triggeres synchronize_rcu_normal() and last one is an
event.

There are two traces in the synchronize_rcu_normal(). On entry,
when a new request is registered and on exit point when request
is completed.

Please note, CONFIG_RCU_TRACE=y is required to activate traces.

Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
 2024-04-15 19:47:51 +02:00
Paolo Bonzini
f3b65bbaed KVM: delete .change_pte MMU notifier callback 
The .change_pte() MMU notifier callback was intended as an
optimization. The original point of it was that KSM could tell KVM to flip
its secondary PTE to a new location without having to first zap it. At
the time there was also an .invalidate_page() callback; both of them were
*not* bracketed by calls to mmu_notifier_invalidate_range_{start,end}(),
and .invalidate_page() also doubled as a fallback implementation of
.change_pte().

Later on, however, both callbacks were changed to occur within an
invalidate_range_start/end() block.

In the case of .change_pte(), commit 6bdb913f0a ("mm: wrap calls to
set_pte_at_notify with invalidate_range_start and invalidate_range_end",
2012-10-09) did so to remove the fallback from .invalidate_page() to
.change_pte() and allow sleepable .invalidate_page() hooks.

This however made KVM's usage of the .change_pte() callback completely
moot, because KVM unmaps the sPTEs during .invalidate_range_start()
and therefore .change_pte() has no hope of finding a sPTE to change.
Drop the generic KVM code that dispatches to kvm_set_spte_gfn(), as
well as all the architecture specific implementations.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Anup Patel <anup@brainfault.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20240405115815.3226315-2-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2024-04-11 13:18:27 -04:00
Marco Elver
c82389947d tracing: Add sched_prepare_exec tracepoint 
Add "sched_prepare_exec" tracepoint, which is run right after the point
of no return but before the current task assumes its new exec identity.

Unlike the tracepoint "sched_process_exec", the "sched_prepare_exec"
tracepoint runs before flushing the old exec, i.e. while the task still
has the original state (such as original MM), but when the new exec
either succeeds or crashes (but never returns to the original exec).

Being able to trace this event can be helpful in a number of use cases:

  * allowing tracing eBPF programs access to the original MM on exec,
    before current->mm is replaced;
  * counting exec in the original task (via perf event);
  * profiling flush time ("sched_prepare_exec" to "sched_process_exec").

Example of tracing output:

 $ cat /sys/kernel/debug/tracing/trace_pipe
    <...>-379  [003] .....  179.626921: sched_prepare_exec: interp=/usr/bin/sshd filename=/usr/bin/sshd pid=379 comm=sshd
    <...>-381  [002] .....  180.048580: sched_prepare_exec: interp=/bin/bash filename=/bin/bash pid=381 comm=sshd
    <...>-385  [001] .....  180.068277: sched_prepare_exec: interp=/usr/bin/tty filename=/usr/bin/tty pid=385 comm=bash
    <...>-389  [006] .....  192.020147: sched_prepare_exec: interp=/usr/bin/dmesg filename=/usr/bin/dmesg pid=389 comm=bash

Signed-off-by: Marco Elver <elver@google.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20240411102158.1272267-1-elver@google.com
Signed-off-by: Kees Cook <keescook@chromium.org>
 2024-04-11 09:02:21 -07:00
Steven Rostedt (Google)
a4833e3aba SUNRPC: Fix rpcgss_context trace event acceptor field 
The rpcgss_context trace event acceptor field is a dynamically sized
string that records the "data" parameter. But this parameter is also
dependent on the "len" field to determine the size of the data.

It needs to use __string_len() helper macro where the length can be passed
in. It also incorrectly uses strncpy() to save it instead of
__assign_str(). As these macros can change, it is not wise to open code
them in trace events.

As of commit c759e60903 ("tracing: Remove __assign_str_len()"),
__assign_str() can be used for both __string() and __string_len() fields.
Before that commit, __assign_str_len() is required to be used. This needs
to be noted for backporting. (In actuality, commit c1fa617cae ("tracing:
Rework __assign_str() and __string() to not duplicate getting the string")
is the commit that makes __string_str_len() obsolete).

Cc: stable@vger.kernel.org
Fixes: 0c77668ddb ("SUNRPC: Introduce trace points in rpc_auth_gss.ko")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-04-10 19:01:30 -04:00
Ingo Molnar
0e6ebfd163 Linux 6.9-rc3 
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Merge tag 'v6.9-rc3' into x86/cpu, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2024-04-09 09:28:41 +02:00
Justin Stitt
386f4a7379 trace: events: cleanup deprecated strncpy uses 
strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.

For 2 out of 3 of these changes we can simply swap in strscpy() as it
guarantess NUL-termination which is needed for the following trace
print.

trace_rpcgss_context() should use memcpy as its format specifier %.*s
allows for the length to be specifier (__entry->len). Due to this,
acceptor does not technically need to be NUL-terminated. Moreover,
swapping in strscpy() and keeping everything else the same could result
in truncation of the source string by one byte. To remedy this, we could
use `len + 1` but I am unsure of the size of the destination buffer so a
simple memcpy should suffice.
|	TP_printk("win_size=%u expiry=%lu now=%lu timeout=%u acceptor=%.*s",
|		__entry->window_size, __entry->expiry, __entry->now,
|		__entry->timeout, __entry->len, __get_str(acceptor))

I suspect acceptor not to naturally be a NUL-terminated string due to
the presence of some stringify methods.
|	.crstringify_acceptor	= gss_stringify_acceptor,

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://lore.kernel.org/r/20240401-strncpy-include-trace-events-mdio-h-v1-1-9cb5a4cda116@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-04-05 22:10:25 -07:00
Jason Xing
19822a980e trace: tcp: fully support trace_tcp_send_reset 
Prior to this patch, what we can see by enabling trace_tcp_send is
only happening under two circumstances:
1) active rst mode
2) non-active rst mode and based on the full socket

That means the inconsistency occurs if we use tcpdump and trace
simultaneously to see how rst happens.

It's necessary that we should take into other cases into considerations,
say:
1) time-wait socket
2) no socket
...

By parsing the incoming skb and reversing its 4-tuple can
we know the exact 'flow' which might not exist.

Samples after applied this patch:
1. tcp_send_reset: skbaddr=XXX skaddr=XXX src=ip:port dest=ip:port
state=TCP_ESTABLISHED
2. tcp_send_reset: skbaddr=000...000 skaddr=XXX src=ip:port dest=ip:port
state=UNKNOWN
Note:
1) UNKNOWN means we cannot extract the right information from skb.
2) skbaddr/skaddr could be 0

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Link: https://lore.kernel.org/r/20240401073605.37335-3-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-04-03 19:26:14 -07:00
Jason Xing
9807080e21 trace: adjust TP_STORE_ADDR_PORTS_SKB() parameters 
Introducing entry_saddr and entry_daddr parameters in this macro
for later use can help us record the reverse 4-tuple by analyzing
the 4-tuple of the incoming skb when receiving.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240401073605.37335-2-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-04-03 19:26:14 -07:00
Avadhut Naik
186d7ef52c tracing: Add the ::microcode field to the mce_record tracepoint 
Currently, the microcode field (Microcode Revision) of 'struct mce' is not
exposed to userspace through the mce_record tracepoint.

Knowing the microcode version on which the MCE was received is critical
information for debugging. If the version is not recorded, later attempts
to acquire the version might result in discrepancies since it can be
changed at runtime.

Add microcode version to the tracepoint to prevent ambiguity over
the active version on the system when the MCE was received.

Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240401171455.1737976-3-avadhut.naik@amd.com
 2024-04-03 09:39:29 +02:00
Avadhut Naik
98430645e3 tracing: Add the ::ppin field to the mce_record tracepoint 
Machine Check Error information from 'struct mce' is exposed to userspace
through the mce_record tracepoint.

Currently, however, the PPIN (Protected Processor Inventory Number) field
of 'struct mce' is not exposed.

Add a PPIN field to the tracepoint as it provides a unique identifier for
the system (or socket in case of multi-socket systems) on which the MCE
has been received.

Also, add a comment explaining the kind of information that can be and
should be added to the tracepoint.

Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240401171455.1737976-2-avadhut.naik@amd.com
 2024-04-03 09:39:29 +02:00
Alexander Aring
1131f33908 dlm: remove lkb from callback tracepoints 
Stop using lkb structs in the callback tracepoints so that lkb
references are not needed. This prepares for separating lkb
structs from callbacks.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
 2024-04-01 13:31:12 -05:00
Ingo Molnar
ac5e80e94f x86/mce: Clean up TP_printk() output line of the 'mce_record' tracepoint 
- Only capitalize entries where that makes sense
 - Print separate values separately
 - Rename 'PROCESSOR' to vendor & CPUID

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Avadhut Naik <avadhut.naik@amd.com>
Cc: "Tony Luck" <tony.luck@intel.com>
Link: https://lore.kernel.org/r/ZgZpn/zbCJWYdL5y@gmail.com
 2024-03-30 11:35:28 +01:00
Balazs Scheidler
e9669a00bb net: udp: add IP/port data to the tracepoint udp/udp_fail_queue_rcv_skb 
The udp_fail_queue_rcv_skb() tracepoint lacks any details on the source
and destination IP/port whereas this information can be critical in case
of UDP/syslog.

Signed-off-by: Balazs Scheidler <balazs.scheidler@axoflow.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Link: https://lore.kernel.org/r/0c8b3e33dbf679e190be6f4c6736603a76988a20.1711475011.git.balazs.scheidler@axoflow.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-03-29 12:18:24 -07:00
Balazs Scheidler
a0ad11fc26 net: port TP_STORE_ADDR_PORTS_SKB macro to be tcp/udp independent 
This patch moves TP_STORE_ADDR_PORTS_SKB() to a common header and removes
the TCP specific implementation details.

Previously the macro assumed the skb passed as an argument is a
TCP packet, the implementation now uses an argument to the L4 header and
uses that to extract the source/destination ports, which happen
to be named the same in "struct tcphdr" and "struct udphdr"

Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Balazs Scheidler <balazs.scheidler@axoflow.com>
Link: https://lore.kernel.org/r/9e306f78260dfbbdc7353ba5f864cc027a409540.1711475011.git.balazs.scheidler@axoflow.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-03-29 12:18:24 -07:00
Andrii Nakryiko
3124591f68 bpf: add bpf_modify_return_test_tp() kfunc triggering tracepoint 
Add a simple bpf_modify_return_test_tp() kfunc, available to all program
types, that is useful for various testing and benchmarking scenarios, as
it allows to trigger most tracing BPF program types from BPF side,
allowing to do complex testing and benchmarking scenarios.

It is also attachable to for fmod_ret programs, making it a good and
simple way to trigger fmod_ret program under test/benchmark.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240326162151.3981687-6-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2024-03-28 18:31:40 -07:00
Jakub Kicinski
2a702c2e57 bpf-next-for-netdev 
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2024-03-25

We've added 38 non-merge commits during the last 13 day(s) which contain
a total of 50 files changed, 867 insertions(+), 274 deletions(-).

The main changes are:

1) Add the ability to specify and retrieve BPF cookie also for raw
   tracepoint programs in order to ease migration from classic to raw
   tracepoints, from Andrii Nakryiko.

2) Allow the use of bpf_get_{ns_,}current_pid_tgid() helper for all
   program types and add additional BPF selftests, from Yonghong Song.

3) Several improvements to bpftool and its build, for example, enabling
   libbpf logs when loading pid_iter in debug mode, from Quentin Monnet.

4) Check the return code of all BPF-related set_memory_*() functions during
   load and bail out in case they fail, from Christophe Leroy.

5) Avoid a goto in regs_refine_cond_op() such that the verifier can
   be better integrated into Agni tool which doesn't support backedges
   yet, from Harishankar Vishwanathan.

6) Add a small BPF trie perf improvement by always inlining
   longest_prefix_match, from Jesper Dangaard Brouer.

7) Small BPF selftest refactor in bpf_tcp_ca.c to utilize start_server()
   helper instead of open-coding it, from Geliang Tang.

8) Improve test_tc_tunnel.sh BPF selftest to prevent client connect
   before the server bind, from Alessandro Carminati.

9) Fix BPF selftest benchmark for older glibc and use syscall(SYS_gettid)
   instead of gettid(), from Alan Maguire.

10) Implement a backward-compatible method for struct_ops types with
    additional fields which are not present in older kernels,
    from Kui-Feng Lee.

11) Add a small helper to check if an instruction is addr_space_cast
    from as(0) to as(1) and utilize it in x86-64 JIT, from Puranjay Mohan.

12) Small cleanup to remove unnecessary error check in
    bpf_struct_ops_map_update_elem, from Martin KaFai Lau.

13) Improvements to libbpf fd validity checks for BPF map/programs,
    from Mykyta Yatsenko.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (38 commits)
  selftests/bpf: Fix flaky test btf_map_in_map/lookup_update
  bpf: implement insn_is_cast_user() helper for JITs
  bpf: Avoid get_kernel_nofault() to fetch kprobe entry IP
  selftests/bpf: Use start_server in bpf_tcp_ca
  bpf: Sync uapi bpf.h to tools directory
  libbpf: Add new sec_def "sk_skb/verdict"
  selftests/bpf: Mark uprobe trigger functions with nocf_check attribute
  selftests/bpf: Use syscall(SYS_gettid) instead of gettid() wrapper in bench
  bpf-next: Avoid goto in regs_refine_cond_op()
  bpftool: Clean up HOST_CFLAGS, HOST_LDFLAGS for bootstrap bpftool
  selftests/bpf: scale benchmark counting by using per-CPU counters
  bpftool: Remove unnecessary source files from bootstrap version
  bpftool: Enable libbpf logs when loading pid_iter in debug mode
  selftests/bpf: add raw_tp/tp_btf BPF cookie subtests
  libbpf: add support for BPF cookie for raw_tp/tp_btf programs
  bpf: support BPF cookie in raw tracepoint (raw_tp, tp_btf) programs
  bpf: pass whole link instead of prog when triggering raw tracepoint
  bpf: flatten bpf_probe_register call chain
  selftests/bpf: Prevent client connect before server bind in test_tc_tunnel.sh
  selftests/bpf: Add a sk_msg prog bpf_get_ns_current_pid_tgid() test
  ...
====================

Link: https://lore.kernel.org/r/20240325233940.7154-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-03-27 07:52:34 -07:00
Cristian Marussi
da251ce210 include: trace: Widen the tag buffer in trace_scmi_dump_msg 
A bigger buffer allow for more diverse tag names.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240325204620.1437237-2-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
 2024-03-26 11:17:40 +00:00
Jason Xing
646700ce23 trace: use TP_STORE_ADDRS() macro in inet_sock_set_state() 
As the title said, use the macro directly like the patch[1] did
to avoid those duplications. No functional change.

[1]
commit 6a6b0b9914 ("tcp: Avoid preprocessor directives in tracepoint macro args")

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-03-26 11:12:06 +01:00
Jason Xing
a24c855a5e trace: use TP_STORE_ADDRS() macro in inet_sk_error_report() 
As the title said, use the macro directly like the patch[1] did
to avoid those duplications. No functional change.

[1]
commit 6a6b0b9914 ("tcp: Avoid preprocessor directives in tracepoint macro args")

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-03-26 11:12:05 +01:00
Jason Xing
b3af9045b4 trace: move to TP_STORE_ADDRS related macro to net_probe_common.h 
Put the macro into another standalone file for better extension.
Some tracepoints can use this common part in the future.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-03-26 11:12:05 +01:00
Kassey Li
d6a7bbdde6 workqueue: add function in event of workqueue_activate_work 
The trace event "workqueue_activate_work" only print work struct.
However, function is the region of interest in a full sequence of work.
Current workqueue_activate_work trace event output:

    workqueue_activate_work: work struct ffffff88b4a0f450

With this change, workqueue_activate_work will print the function name,
align with workqueue_queue_work/execute_start/execute_end event.

    workqueue_activate_work: work struct ffffff80413a78b8 function=vmstat_update

Signed-off-by: Kassey Li <quic_yingangl@quicinc.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
 2024-03-25 09:28:52 -10:00
Andrii Nakryiko
d4dfc5700e bpf: pass whole link instead of prog when triggering raw tracepoint 
Instead of passing prog as an argument to bpf_trace_runX() helpers, that
are called from tracepoint triggering calls, store BPF link itself
(struct bpf_raw_tp_link for raw tracepoints). This will allow to pass
extra information like BPF cookie into raw tracepoint registration.

Instead of replacing `struct bpf_prog *prog = __data;` with
corresponding `struct bpf_raw_tp_link *link = __data;` assignment in
`__bpf_trace_##call` I just passed `__data` through into underlying
bpf_trace_runX() call. This works well because we implicitly cast `void *`,
and it also avoids naming clashes with arguments coming from
tracepoint's "proto" list. We could have run into the same problem with
"prog", we just happened to not have a tracepoint that has "prog" input
argument. We are less lucky with "link", as there are tracepoints using
"link" argument name already. So instead of trying to avoid naming
conflicts, let's just remove intermediate local variable. It doesn't
hurt readibility, it's either way a bit of a maze of calls and macros,
that requires careful reading.

Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Message-ID: <20240319233852.1977493-3-andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2024-03-19 23:05:33 -07:00
Steven Rostedt (Google)
24f5bb9f24 tracing: Just use strcmp() for testing __string() and __assign_str() match 
As __assign_str() no longer uses its "src" parameter, there's a check to
make sure nothing depends on it being different than what was passed to
__string(). It originally just compared the pointer passed to __string()
with the pointer passed into __assign_str() via the "src" parameter. But
there's a couple of outliers that just pass in a quoted string constant,
where comparing the pointers is UB to the compiler, as the compiler is
free to create multiple copies of the same string constant.

Instead, just use strcmp(). It may slow down the trace event, but this
will eventually be removed.

Also, fix the issue of passing NULL to strcmp() by adding a WARN_ON() to
make sure that both "src" and the pointer saved in __string() are either
both NULL or have content, and then checking if "src" is not NULL before
performing the strcmp().

Link: https://lore.kernel.org/all/CAHk-=wjxX16kWd=uxG5wzqt=aXoYDf1BgWOKk+qVmAO0zh7sjA@mail.gmail.com/

Fixes: b1afefa62c ("tracing: Use strcmp() in __assign_str() WARN_ON() check")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2024-03-19 11:23:30 -07:00
Linus Torvalds
ad584d73a2 Tracing updates for 6.9: 
Main user visible change:
 
 - User events can now have "multi formats"
 
   The current user events have a single format. If another event is created
   with a different format, it will fail to be created. That is, once an
   event name is used, it cannot be used again with a different format. This
   can cause issues if a library is using an event and updates its format.
   An application using the older format will prevent an application using
   the new library from registering its event.
 
   A task could also DOS another application if it knows the event names, and
   it creates events with different formats.
 
   The multi-format event is in a different name space from the single
   format. Both the event name and its format are the unique identifier.
   This will allow two different applications to use the same user event name
   but with different payloads.
 
 - Added support to have ftrace_dump_on_oops dump out instances and
   not just the main top level tracing buffer.
 
 Other changes:
 
 - Add eventfs_root_inode
 
   Only the root inode has a dentry that is static (never goes away) and
   stores it upon creation. There's no reason that the thousands of other
   eventfs inodes should have a pointer that never gets set in its
   descriptor. Create a eventfs_root_inode desciptor that has a eventfs_inode
   descriptor and a dentry pointer, and only the root inode will use this.
 
 - Added WARN_ON()s in eventfs
 
   There's some conditionals remaining in eventfs that should never be hit,
   but instead of removing them, add WARN_ON() around them to make sure that
   they are never hit.
 
 - Have saved_cmdlines allocation also include the map_cmdline_to_pid array
 
   The saved_cmdlines structure allocates a large amount of data to hold its
   mappings. Within it, it has three arrays. Two are already apart of it:
   map_pid_to_cmdline[] and saved_cmdlines[]. More memory can be saved by
   also including the map_cmdline_to_pid[] array as well.
 
 - Restructure __string() and __assign_str() macros used in TRACE_EVENT().
 
   Dynamic strings in TRACE_EVENT() are declared with:
 
       __string(name, source)
 
   And assigned with:
 
      __assign_str(name, source)
 
   In the tracepoint callback of the event, the __string() is used to get the
   size needed to allocate on the ring buffer and __assign_str() is used to
   copy the string into the ring buffer. There's a helper structure that is
   created in the TRACE_EVENT() macro logic that will hold the string length
   and its position in the ring buffer which is created by __string().
 
   There are several trace events that have a function to create the string
   to save. This function is executed twice. Once for __string() and again
   for __assign_str(). There's no reason for this. The helper structure could
   also save the string it used in __string() and simply copy that into
   __assign_str() (it also already has its length).
 
   By using the structure to store the source string for the assignment, it
   means that the second argument to __assign_str() is no longer needed.
 
   It will be removed in the next merge window, but for now add a warning if
   the source string given to __string() is different than the source string
   given to __assign_str(), as the source to __assign_str() isn't even used
   and will be going away.
 
 - Added checks to make sure that the source of __string() is also the
   source of __assign_str() so that it can be safely removed in the next
   merge window.
 
   Included fixes that the above check found.
 
 - Other minor clean ups and fixes
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Merge tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing updates from Steven Rostedt:
 "Main user visible change:

   - User events can now have "multi formats"

     The current user events have a single format. If another event is
     created with a different format, it will fail to be created. That
     is, once an event name is used, it cannot be used again with a
     different format. This can cause issues if a library is using an
     event and updates its format. An application using the older format
     will prevent an application using the new library from registering
     its event.

     A task could also DOS another application if it knows the event
     names, and it creates events with different formats.

     The multi-format event is in a different name space from the single
     format. Both the event name and its format are the unique
     identifier. This will allow two different applications to use the
     same user event name but with different payloads.

   - Added support to have ftrace_dump_on_oops dump out instances and
     not just the main top level tracing buffer.

  Other changes:

   - Add eventfs_root_inode

     Only the root inode has a dentry that is static (never goes away)
     and stores it upon creation. There's no reason that the thousands
     of other eventfs inodes should have a pointer that never gets set
     in its descriptor. Create a eventfs_root_inode desciptor that has a
     eventfs_inode descriptor and a dentry pointer, and only the root
     inode will use this.

   - Added WARN_ON()s in eventfs

     There's some conditionals remaining in eventfs that should never be
     hit, but instead of removing them, add WARN_ON() around them to
     make sure that they are never hit.

   - Have saved_cmdlines allocation also include the map_cmdline_to_pid
     array

     The saved_cmdlines structure allocates a large amount of data to
     hold its mappings. Within it, it has three arrays. Two are already
     apart of it: map_pid_to_cmdline[] and saved_cmdlines[]. More memory
     can be saved by also including the map_cmdline_to_pid[] array as
     well.

   - Restructure __string() and __assign_str() macros used in
     TRACE_EVENT()

     Dynamic strings in TRACE_EVENT() are declared with:

         __string(name, source)

     And assigned with:

        __assign_str(name, source)

     In the tracepoint callback of the event, the __string() is used to
     get the size needed to allocate on the ring buffer and
     __assign_str() is used to copy the string into the ring buffer.
     There's a helper structure that is created in the TRACE_EVENT()
     macro logic that will hold the string length and its position in
     the ring buffer which is created by __string().

     There are several trace events that have a function to create the
     string to save. This function is executed twice. Once for
     __string() and again for __assign_str(). There's no reason for
     this. The helper structure could also save the string it used in
     __string() and simply copy that into __assign_str() (it also
     already has its length).

     By using the structure to store the source string for the
     assignment, it means that the second argument to __assign_str() is
     no longer needed.

     It will be removed in the next merge window, but for now add a
     warning if the source string given to __string() is different than
     the source string given to __assign_str(), as the source to
     __assign_str() isn't even used and will be going away.

   - Added checks to make sure that the source of __string() is also the
     source of __assign_str() so that it can be safely removed in the
     next merge window.

     Included fixes that the above check found.

   - Other minor clean ups and fixes"

* tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits)
  tracing: Add __string_src() helper to help compilers not to get confused
  tracing: Use strcmp() in __assign_str() WARN_ON() check
  tracepoints: Use WARN() and not WARN_ON() for warnings
  tracing: Use div64_u64() instead of do_div()
  tracing: Support to dump instance traces by ftrace_dump_on_oops
  tracing: Remove second parameter to __assign_rel_str()
  tracing: Add warning if string in __assign_str() does not match __string()
  tracing: Add __string_len() example
  tracing: Remove __assign_str_len()
  ftrace: Fix most kernel-doc warnings
  tracing: Decrement the snapshot if the snapshot trigger fails to register
  tracing: Fix snapshot counter going between two tracers that use it
  tracing: Use EVENT_NULL_STR macro instead of open coding "(null)"
  tracing: Use ? : shortcut in trace macros
  tracing: Do not calculate strlen() twice for __string() fields
  tracing: Rework __assign_str() and __string() to not duplicate getting the string
  cxl/trace: Properly initialize cxl_poison region name
  net: hns3: tracing: fix hclgevf trace event strings
  drm/i915: Add missing ; to __assign_str() macros in tracepoint code
  NFSD: Fix nfsd_clid_class use of __string_len() macro
  ...
 2024-03-18 15:11:44 -07:00
Steven Rostedt (Google)
7604256cec tracing: Add __string_src() helper to help compilers not to get confused 
The __string() helper macro of the TRACE_EVENT() macro is used to
determine how much of the ring buffer needs to be allocated to fit the
given source string. Some trace events have a string that is dependent on
another variable that could be NULL, and in those cases the string is
passed in to be NULL.

The __string() macro can handle being passed in a NULL pointer for which
it will turn it into "(null)". It does that with:

  strlen((src) ? (const char *)(src) : "(null)") + 1

But if src itself has the same conditional type it can confuse the
compiler. That is:

  __string(r ? dev(r)->name : NULL)

Would turn into:

 strlen((r ? dev(r)->name : NULL) ? (r ? dev(r)->name : NULL) : "(null)" + 1

For which the compiler thinks that NULL is being passed to strlen() and
gives this kind of warning:

./include/trace/stages/stage5_get_offsets.h:50:21: warning: argument 1 null where non-null expected [-Wnonnull]
   50 |                     strlen((src) ? (const char *)(src) : "(null)") + 1)

Instead, create a static inline function that takes the src string and
will return the string if it is not NULL and will return "(null)" if it
is. This will then make the strlen() line:

 strlen(__string_src(src)) + 1

Where the compiler can see that strlen() will not end up with NULL and
does not warn about it.

Note that this depends on commit 51270d573a ("tracing/net_sched: Fix
tracepoints that save qdisc_dev() as a string") being applied, as passing
the qdisc_dev() into __string_src() will give an error.

Link: https://lore.kernel.org/all/ZfNmfCmgCs4Nc+EH@aschofie-mobl2/
Link: https://lore.kernel.org/linux-trace-kernel/20240314232754.345cea82@rorschach.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reported-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:06 -04:00
Steven Rostedt (Google)
b1afefa62c tracing: Use strcmp() in __assign_str() WARN_ON() check 
The WARN_ON() check in __assign_str() to catch where the source variable
to the macro doesn't match the source variable to __string() gives an
error in clang:

>> include/trace/events/sunrpc.h:703:4: warning: result of comparison against a string literal is unspecified (use an explicit string comparison function instead) [-Wstring-compare]
     670 |                         __assign_str(progname, "unknown");

That's because the __assign_str() macro has:

   WARN_ON_ONCE((src) != __data_offsets.dst##_ptr_);

Where "src" is a string literal. Clang warns when comparing a string
literal directly as it is undefined to what the value of the literal is.

Since this is still to make sure the same string that goes to __string()
is the same as __assign_str(), for string literals do a test for that and
then use strcmp() in those cases

Note that this depends on commit 51270d573a ("tracing/net_sched: Fix
tracepoints that save qdisc_dev() as a string") being applied, as this was
what found that bug.

Link: https://lore.kernel.org/linux-trace-kernel/20240312113002.00031668@gandalf.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402292111.KIdExylU-lkp@intel.com/
Fixes: 433e1d88a3be ("tracing: Add warning if string in __assign_str() does not match __string()")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:06 -04:00
Steven Rostedt (Google)
0bdfb68c84 tracing: Remove second parameter to __assign_rel_str() 
The second parameter of __assign_rel_str() is no longer used. It can be removed.

Note, the only real users of rel_string is user events. This code is just
in the sample code for testing purposes.

This makes __assign_rel_str() different than __assign_str() but that's
fine. __assign_str() is used over 700 places and has a larger impact. That
change will come later.

Link: https://lore.kernel.org/linux-trace-kernel/20240223162519.2beb8112@gandalf.local.home

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:05 -04:00
Steven Rostedt (Google)
cf986e57d6 tracing: Add warning if string in __assign_str() does not match __string() 
In preparation to remove the second parameter of __assign_str(), make sure
it is really a duplicate of __string() by adding a WARN_ON_ONCE().

Link: https://lore.kernel.org/linux-trace-kernel/20240223161356.63b72403@gandalf.local.home

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:05 -04:00
Steven Rostedt (Google)
c759e60903 tracing: Remove __assign_str_len() 
Now that __assign_str() gets the length from the __string() (and
__string_len()) macros, there's no reason to have a separate
__assign_str_len() macro as __assign_str() can get the length of the
string needed.

Also remove __assign_rel_str() although it had no users anyway.

Link: https://lore.kernel.org/linux-trace-kernel/20240223152206.0b650659@gandalf.local.home

Cc: Jeff Layton <jlayton@kernel.org>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:05 -04:00
Steven Rostedt (Google)
70a6ed553f tracing: Use EVENT_NULL_STR macro instead of open coding "(null)" 
The TRACE_EVENT macros has some dependency if a __string() field is NULL,
where it will save "(null)" as the string. This string is also used by
__assign_str(). It's better to create a single macro instead of having
something that will not be caught by the compiler if there is an
unfortunate typo.

Link: https://lore.kernel.org/linux-trace-kernel/20240222211443.106216915@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:04 -04:00
Steven Rostedt (Google)
916849860f tracing: Use ? : shortcut in trace macros 
Instead of having:

  #define __assign_str(dst, src)					\
	memcpy(__get_str(dst), __data_offsets.dst##_ptr_ ?		\
		__data_offsets.dst##_ptr_ : "(null)",			\
		__get_dynamic_array_len(dst))

Use the ? : shortcut and compact it down to:

  #define __assign_str(dst, src)					\
	memcpy(__get_str(dst), __data_offsets.dst##_ptr_ ? : "(null)",	\
	       __get_dynamic_array_len(dst))

Link: https://lore.kernel.org/linux-trace-kernel/20240222211442.949327725@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:33:04 -04:00
Steven Rostedt (Google)
e8b737bfb1 tracing: Do not calculate strlen() twice for __string() fields 
The TRACE_EVENT() macro handles dynamic strings by having:

  TP_PROTO(struct some_struct *s),
  TP_ARGS(s),
  TP_STRUCT__entry(
        __string(my_string, s->string)
 ),
 TP_fast_assign(
        __assign_str(my_string, s->string);
 )
 TP_printk("%s", __get_str(my_string))

There's even some code that may call a function helper to find the
s->string value. The problem with the above is that the work to get the
s->string is done twice. Once at the __string() and again in the
__assign_str().

The length of the string is calculated via a strlen(), not once, but
twice. Once during the __string() macro and again in __assign_str(). But
the length is actually already recorded in the data location and here's no
reason to call strlen() again.

Just use the saved length that was saved in the __string() code for the
__assign_str() code.

Link: https://lore.kernel.org/linux-trace-kernel/20240222211442.793074999@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:32:57 -04:00
Steven Rostedt (Google)
c1fa617cae tracing: Rework __assign_str() and __string() to not duplicate getting the string 
The TRACE_EVENT() macro handles dynamic strings by having:

  TP_PROTO(struct some_struct *s),
  TP_ARGS(s),
  TP_STRUCT__entry(
	__string(my_string, s->string)
 ),
 TP_fast_assign(
	__assign_str(my_string, s->string);
 )
 TP_printk("%s", __get_str(my_string))

There's even some code that may call a function helper to find the
s->string value. The problem with the above is that the work to get the
s->string is done twice. Once at the __string() and again in the
__assign_str().

But the __string() uses dynamic_array() which has a helper structure that
is created holding the offsets and length of the string fields. Instead of
finding the string twice, just save it off in another field from that
helper structure, and have __assign_str() use that instead.

Note, this also means that the second parameter of __assign_str() isn't
even used anymore, and may be removed in the future.

Link: https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2024-03-18 10:32:27 -04:00
Linus Torvalds
c1f10ac840 NFS client updates for Linux 6.9 
Highlights include:
 
 Bugfixes:
  - Fix for an Oops in the NFSv4.2 listxattr handler
  - Correct an incorrect buffer size in listxattr
  - Fix for an Oops in the pNFS flexfiles layout
  - Fix a refcount leak in NFS O_DIRECT writes
  - Fix missing locking in NFS O_DIRECT
  - Avoid an infinite loop in pnfs_update_layout
  - Fix an overflow in the RPC waitqueue queue length counter
  - Ensure that pNFS I/O is also protected by TLS when xprtsec
    is specified by the mount options
  - Fix a leaked folio lock in the netfs read code
  - Fix a potential deadlock in fscache
  - Allow setting the fscache uniquifier in NFSv4
  - Fix an off by one in root_nfs_cat()
  - Fix another off by one in rpc_sockaddr2uaddr()
  - nfs4_do_open() can incorrectly trigger state recovery.
  - Various fixes for connection shutdown
 
 Features and cleanups:
  - Ensure that containers only see their own RPC and NFS stats
  - Enable nconnect for RDMA
  - Remove dead code from nfs_writepage_locked()
  - Various tracepoint additions to track EXCHANGE_ID, GETDEVICEINFO, and
    mount options.
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Merge tag 'nfs-for-6.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Bugfixes:
   - Fix for an Oops in the NFSv4.2 listxattr handler
   - Correct an incorrect buffer size in listxattr
   - Fix for an Oops in the pNFS flexfiles layout
   - Fix a refcount leak in NFS O_DIRECT writes
   - Fix missing locking in NFS O_DIRECT
   - Avoid an infinite loop in pnfs_update_layout
   - Fix an overflow in the RPC waitqueue queue length counter
   - Ensure that pNFS I/O is also protected by TLS when xprtsec is
     specified by the mount options
   - Fix a leaked folio lock in the netfs read code
   - Fix a potential deadlock in fscache
   - Allow setting the fscache uniquifier in NFSv4
   - Fix an off by one in root_nfs_cat()
   - Fix another off by one in rpc_sockaddr2uaddr()
   - nfs4_do_open() can incorrectly trigger state recovery
   - Various fixes for connection shutdown

  Features and cleanups:
   - Ensure that containers only see their own RPC and NFS stats
   - Enable nconnect for RDMA
   - Remove dead code from nfs_writepage_locked()
   - Various tracepoint additions to track EXCHANGE_ID, GETDEVICEINFO,
     and mount options"

* tag 'nfs-for-6.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (29 commits)
  nfs: fix panic when nfs4_ff_layout_prepare_ds() fails
  NFS: trace the uniquifier of fscache
  NFS: Read unlock folio on nfs_page_create_from_folio() error
  NFS: remove unused variable nfs_rpcstat
  nfs: fix UAF in direct writes
  nfs: properly protect nfs_direct_req fields
  NFS: enable nconnect for RDMA
  NFSv4: nfs4_do_open() is incorrectly triggering state recovery
  NFS: avoid infinite loop in pnfs_update_layout.
  NFS: remove sync_mode test from nfs_writepage_locked()
  NFSv4.1/pnfs: fix NFS with TLS in pnfs
  NFS: Fix an off by one in root_nfs_cat()
  nfs: make the rpc_stat per net namespace
  nfs: expose /proc/net/sunrpc/nfs in net namespaces
  sunrpc: add a struct rpc_stats arg to rpc_create_args
  nfs: remove unused NFS_CALL macro
  NFSv4.1: add tracepoint to trunked nfs4_exchange_id calls
  NFS: Fix nfs_netfs_issue_read() xarray locking for writeback interrupt
  SUNRPC: increase size of rpc_wait_queue.qlen from unsigned short to unsigned int
  nfs: fix regression in handling of fsc= option in NFSv4
  ...
 2024-03-16 11:44:00 -07:00
Linus Torvalds
902861e34c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 
from hotplugged memory rather than only from main memory.  Series
   "implement "memmap on memory" feature on s390".
 
 - More folio conversions from Matthew Wilcox in the series
 
 	"Convert memcontrol charge moving to use folios"
 	"mm: convert mm counter to take a folio"
 
 - Chengming Zhou has optimized zswap's rbtree locking, providing
   significant reductions in system time and modest but measurable
   reductions in overall runtimes.  The series is "mm/zswap: optimize the
   scalability of zswap rb-tree".
 
 - Chengming Zhou has also provided the series "mm/zswap: optimize zswap
   lru list" which provides measurable runtime benefits in some
   swap-intensive situations.
 
 - And Chengming Zhou further optimizes zswap in the series "mm/zswap:
   optimize for dynamic zswap_pools".  Measured improvements are modest.
 
 - zswap cleanups and simplifications from Yosry Ahmed in the series "mm:
   zswap: simplify zswap_swapoff()".
 
 - In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
   contributed several DAX cleanups as well as adding a sysfs tunable to
   control the memmap_on_memory setting when the dax device is hotplugged
   as system memory.
 
 - Johannes Weiner has added the large series "mm: zswap: cleanups",
   which does that.
 
 - More DAMON work from SeongJae Park in the series
 
 	"mm/damon: make DAMON debugfs interface deprecation unignorable"
 	"selftests/damon: add more tests for core functionalities and corner cases"
 	"Docs/mm/damon: misc readability improvements"
 	"mm/damon: let DAMOS feeds and tame/auto-tune itself"
 
 - In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
   extension" Rakie Kim has developed a new mempolicy interleaving policy
   wherein we allocate memory across nodes in a weighted fashion rather
   than uniformly.  This is beneficial in heterogeneous memory environments
   appearing with CXL.
 
 - Christophe Leroy has contributed some cleanup and consolidation work
   against the ARM pagetable dumping code in the series "mm: ptdump:
   Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
 
 - Luis Chamberlain has added some additional xarray selftesting in the
   series "test_xarray: advanced API multi-index tests".
 
 - Muhammad Usama Anjum has reworked the selftest code to make its
   human-readable output conform to the TAP ("Test Anything Protocol")
   format.  Amongst other things, this opens up the use of third-party
   tools to parse and process out selftesting results.
 
 - Ryan Roberts has added fork()-time PTE batching of THP ptes in the
   series "mm/memory: optimize fork() with PTE-mapped THP".  Mainly
   targeted at arm64, this significantly speeds up fork() when the process
   has a large number of pte-mapped folios.
 
 - David Hildenbrand also gets in on the THP pte batching game in his
   series "mm/memory: optimize unmap/zap with PTE-mapped THP".  It
   implements batching during munmap() and other pte teardown situations.
   The microbenchmark improvements are nice.
 
 - And in the series "Transparent Contiguous PTEs for User Mappings" Ryan
   Roberts further utilizes arm's pte's contiguous bit ("contpte
   mappings").  Kernel build times on arm64 improved nicely.  Ryan's series
   "Address some contpte nits" provides some followup work.
 
 - In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
   fixed an obscure hugetlb race which was causing unnecessary page faults.
   He has also added a reproducer under the selftest code.
 
 - In the series "selftests/mm: Output cleanups for the compaction test",
   Mark Brown did what the title claims.
 
 - Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring".
 
 - Even more zswap material from Nhat Pham.  The series "fix and extend
   zswap kselftests" does as claimed.
 
 - In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
   regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in
   our handling of DAX on archiecctures which have virtually aliasing data
   caches.  The arm architecture is the main beneficiary.
 
 - Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic
   improvements in worst-case mmap_lock hold times during certain
   userfaultfd operations.
 
 - Some page_owner enhancements and maintenance work from Oscar Salvador
   in his series
 
 	"page_owner: print stacks and their outstanding allocations"
 	"page_owner: Fixup and cleanup"
 
 - Uladzislau Rezki has contributed some vmalloc scalability improvements
   in his series "Mitigate a vmap lock contention".  It realizes a 12x
   improvement for a certain microbenchmark.
 
 - Some kexec/crash cleanup work from Baoquan He in the series "Split
   crash out from kexec and clean up related config items".
 
 - Some zsmalloc maintenance work from Chengming Zhou in the series
 
 	"mm/zsmalloc: fix and optimize objects/page migration"
 	"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
 
 - Zi Yan has taught the MM to perform compaction on folios larger than
   order=0.  This a step along the path to implementaton of the merging of
   large anonymous folios.  The series is named "Enable >0 order folio
   memory compaction".
 
 - Christoph Hellwig has done quite a lot of cleanup work in the
   pagecache writeback code in his series "convert write_cache_pages() to
   an iterator".
 
 - Some modest hugetlb cleanups and speedups in Vishal Moola's series
   "Handle hugetlb faults under the VMA lock".
 
 - Zi Yan has changed the page splitting code so we can split huge pages
   into sizes other than order-0 to better utilize large folios.  The
   series is named "Split a folio to any lower order folios".
 
 - David Hildenbrand has contributed the series "mm: remove
   total_mapcount()", a cleanup.
 
 - Matthew Wilcox has sought to improve the performance of bulk memory
   freeing in his series "Rearrange batched folio freeing".
 
 - Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
   provides large improvements in bootup times on large machines which are
   configured to use large numbers of hugetlb pages.
 
 - Matthew Wilcox's series "PageFlags cleanups" does that.
 
 - Qi Zheng's series "minor fixes and supplement for ptdesc" does that
   also.  S390 is affected.
 
 - Cleanups to our pagemap utility functions from Peter Xu in his series
   "mm/treewide: Replace pXd_large() with pXd_leaf()".
 
 - Nico Pache has fixed a few things with our hugepage selftests in his
   series "selftests/mm: Improve Hugepage Test Handling in MM Selftests".
 
 - Also, of course, many singleton patches to many things.  Please see
   the individual changelogs for details.
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Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
   from hotplugged memory rather than only from main memory. Series
   "implement "memmap on memory" feature on s390".

 - More folio conversions from Matthew Wilcox in the series

	"Convert memcontrol charge moving to use folios"
	"mm: convert mm counter to take a folio"

 - Chengming Zhou has optimized zswap's rbtree locking, providing
   significant reductions in system time and modest but measurable
   reductions in overall runtimes. The series is "mm/zswap: optimize the
   scalability of zswap rb-tree".

 - Chengming Zhou has also provided the series "mm/zswap: optimize zswap
   lru list" which provides measurable runtime benefits in some
   swap-intensive situations.

 - And Chengming Zhou further optimizes zswap in the series "mm/zswap:
   optimize for dynamic zswap_pools". Measured improvements are modest.

 - zswap cleanups and simplifications from Yosry Ahmed in the series
   "mm: zswap: simplify zswap_swapoff()".

 - In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
   contributed several DAX cleanups as well as adding a sysfs tunable to
   control the memmap_on_memory setting when the dax device is
   hotplugged as system memory.

 - Johannes Weiner has added the large series "mm: zswap: cleanups",
   which does that.

 - More DAMON work from SeongJae Park in the series

	"mm/damon: make DAMON debugfs interface deprecation unignorable"
	"selftests/damon: add more tests for core functionalities and corner cases"
	"Docs/mm/damon: misc readability improvements"
	"mm/damon: let DAMOS feeds and tame/auto-tune itself"

 - In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
   extension" Rakie Kim has developed a new mempolicy interleaving
   policy wherein we allocate memory across nodes in a weighted fashion
   rather than uniformly. This is beneficial in heterogeneous memory
   environments appearing with CXL.

 - Christophe Leroy has contributed some cleanup and consolidation work
   against the ARM pagetable dumping code in the series "mm: ptdump:
   Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".

 - Luis Chamberlain has added some additional xarray selftesting in the
   series "test_xarray: advanced API multi-index tests".

 - Muhammad Usama Anjum has reworked the selftest code to make its
   human-readable output conform to the TAP ("Test Anything Protocol")
   format. Amongst other things, this opens up the use of third-party
   tools to parse and process out selftesting results.

 - Ryan Roberts has added fork()-time PTE batching of THP ptes in the
   series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
   targeted at arm64, this significantly speeds up fork() when the
   process has a large number of pte-mapped folios.

 - David Hildenbrand also gets in on the THP pte batching game in his
   series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
   implements batching during munmap() and other pte teardown
   situations. The microbenchmark improvements are nice.

 - And in the series "Transparent Contiguous PTEs for User Mappings"
   Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte
   mappings"). Kernel build times on arm64 improved nicely. Ryan's
   series "Address some contpte nits" provides some followup work.

 - In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
   fixed an obscure hugetlb race which was causing unnecessary page
   faults. He has also added a reproducer under the selftest code.

 - In the series "selftests/mm: Output cleanups for the compaction
   test", Mark Brown did what the title claims.

 - Kinsey Ho has added the series "mm/mglru: code cleanup and
   refactoring".

 - Even more zswap material from Nhat Pham. The series "fix and extend
   zswap kselftests" does as claimed.

 - In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
   regression" Mathieu Desnoyers has cleaned up and fixed rather a mess
   in our handling of DAX on archiecctures which have virtually aliasing
   data caches. The arm architecture is the main beneficiary.

 - Lokesh Gidra's series "per-vma locks in userfaultfd" provides
   dramatic improvements in worst-case mmap_lock hold times during
   certain userfaultfd operations.

 - Some page_owner enhancements and maintenance work from Oscar Salvador
   in his series

	"page_owner: print stacks and their outstanding allocations"
	"page_owner: Fixup and cleanup"

 - Uladzislau Rezki has contributed some vmalloc scalability
   improvements in his series "Mitigate a vmap lock contention". It
   realizes a 12x improvement for a certain microbenchmark.

 - Some kexec/crash cleanup work from Baoquan He in the series "Split
   crash out from kexec and clean up related config items".

 - Some zsmalloc maintenance work from Chengming Zhou in the series

	"mm/zsmalloc: fix and optimize objects/page migration"
	"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"

 - Zi Yan has taught the MM to perform compaction on folios larger than
   order=0. This a step along the path to implementaton of the merging
   of large anonymous folios. The series is named "Enable >0 order folio
   memory compaction".

 - Christoph Hellwig has done quite a lot of cleanup work in the
   pagecache writeback code in his series "convert write_cache_pages()
   to an iterator".

 - Some modest hugetlb cleanups and speedups in Vishal Moola's series
   "Handle hugetlb faults under the VMA lock".

 - Zi Yan has changed the page splitting code so we can split huge pages
   into sizes other than order-0 to better utilize large folios. The
   series is named "Split a folio to any lower order folios".

 - David Hildenbrand has contributed the series "mm: remove
   total_mapcount()", a cleanup.

 - Matthew Wilcox has sought to improve the performance of bulk memory
   freeing in his series "Rearrange batched folio freeing".

 - Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
   provides large improvements in bootup times on large machines which
   are configured to use large numbers of hugetlb pages.

 - Matthew Wilcox's series "PageFlags cleanups" does that.

 - Qi Zheng's series "minor fixes and supplement for ptdesc" does that
   also. S390 is affected.

 - Cleanups to our pagemap utility functions from Peter Xu in his series
   "mm/treewide: Replace pXd_large() with pXd_leaf()".

 - Nico Pache has fixed a few things with our hugepage selftests in his
   series "selftests/mm: Improve Hugepage Test Handling in MM
   Selftests".

 - Also, of course, many singleton patches to many things. Please see
   the individual changelogs for details.

* tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits)
  mm/zswap: remove the memcpy if acomp is not sleepable
  crypto: introduce: acomp_is_async to expose if comp drivers might sleep
  memtest: use {READ,WRITE}_ONCE in memory scanning
  mm: prohibit the last subpage from reusing the entire large folio
  mm: recover pud_leaf() definitions in nopmd case
  selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
  selftests/mm: skip uffd hugetlb tests with insufficient hugepages
  selftests/mm: dont fail testsuite due to a lack of hugepages
  mm/huge_memory: skip invalid debugfs new_order input for folio split
  mm/huge_memory: check new folio order when split a folio
  mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure
  mm: add an explicit smp_wmb() to UFFDIO_CONTINUE
  mm: fix list corruption in put_pages_list
  mm: remove folio from deferred split list before uncharging it
  filemap: avoid unnecessary major faults in filemap_fault()
  mm,page_owner: drop unnecessary check
  mm,page_owner: check for null stack_record before bumping its refcount
  mm: swap: fix race between free_swap_and_cache() and swapoff()
  mm/treewide: align up pXd_leaf() retval across archs
  mm/treewide: drop pXd_large()
  ...
 2024-03-14 17:43:30 -07:00
Linus Torvalds
fe46a7dd18 sound updates for 6.9-rc1 
This was a relatively calm development cycle.  Most of changes are
 rather small device-specific fixes and enhancements.  The only
 significant changes in ALSA core are code refactoring with the recent
 cleanup infrastructure, which should bring no functionality changes.
 Some highlights below:
 
 Core:
 - Lots of cleanups in ALSA core code with automatic kfree cleanup
   and locking guard macros
 - New ALSA core kunit test
 
 ASoC:
 - SoundWire support for AMD ACP 6.3 systems
 - Support for reporting version information for AVS firmware
 - Support DSPless mode for Intel Soundwire systems
 - Support for configuring CS35L56 amplifiers using EFI calibration
    data
 - Log which component is being operated on as part of power management
    trace events.
 - Support for Microchip SAM9x7, NXP i.MX95 and Qualcomm WCD939x
 
 HD- and USB-audio:
 - More Cirrus HD-audio codec support
 - TAS2781 HD-audio codec fixes
 - Scarlett2 mixer fixes
 
 Others:
 - Enhancement of virtio driver for audio control supports
 - Cleanups of legacy PM code with new macros
 - Firewire sound updates
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Merge tag 'sound-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "This was a relatively calm development cycle. Most of changes are
  rather small device-specific fixes and enhancements. The only
  significant changes in ALSA core are code refactoring with the recent
  cleanup infrastructure, which should bring no functionality changes.
  Some highlights below:

  Core:
   - Lots of cleanups in ALSA core code with automatic kfree cleanup and
     locking guard macros
   - New ALSA core kunit test

  ASoC:
   - SoundWire support for AMD ACP 6.3 systems
   - Support for reporting version information for AVS firmware
   - Support DSPless mode for Intel Soundwire systems
   - Support for configuring CS35L56 amplifiers using EFI calibration
     data
   - Log which component is being operated on as part of power
     management trace events.
   - Support for Microchip SAM9x7, NXP i.MX95 and Qualcomm WCD939x

  HD- and USB-audio:
   - More Cirrus HD-audio codec support
   - TAS2781 HD-audio codec fixes
   - Scarlett2 mixer fixes

  Others:
   - Enhancement of virtio driver for audio control supports
   - Cleanups of legacy PM code with new macros
   - Firewire sound updates"

* tag 'sound-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (307 commits)
  ALSA: usb-audio: Stop parsing channels bits when all channels are found.
  ALSA: hda/tas2781: remove unnecessary runtime_pm calls
  ALSA: hda/realtek - ALC236 fix volume mute & mic mute LED on some HP models
  ALSA: aaci: Delete unused variable in aaci_do_suspend
  ALSA: scarlett2: Fix Scarlett 4th Gen input gain range again
  ALSA: scarlett2: Fix Scarlett 4th Gen input gain range
  ALSA: scarlett2: Fix Scarlett 4th Gen autogain status values
  ALSA: scarlett2: Fix Scarlett 4th Gen 4i4 low-voltage detection
  ALSA: hda/tas2781: restore power state after system_resume
  ALSA: hda/tas2781: do not call pm_runtime_force_* in system_resume/suspend
  ALSA: hda/tas2781: do not reset cur_* values in runtime_suspend
  ALSA: hda/tas2781: add lock to system_suspend
  ALSA: hda/tas2781: use dev_dbg in system_resume
  ALSA: hda/realtek: fix ALC285 issues on HP Envy x360 laptops
  platform/x86: serial-multi-instantiate: Add support for CS35L54 and CS35L57
  ALSA: hda: cs35l56: Add support for CS35L54 and CS35L57
  ASoC: cs35l56: Add support for CS35L54 and CS35L57
  ASoC: Intel: catpt: Carefully use PCI bitwise constants
  ALSA: hda: hda_component: Include sound/hda_codec.h
  ALSA: hda: hda_component: Add missing #include guards
  ...
 2024-03-14 11:10:43 -07:00
Linus Torvalds
66fd6d0bd7 platform-drivers-x86 for v6.9-1 
Highlights:
  - acer-wmi:		New HW support
  - amd/pmf:		Support for new revision of heartbeat notify
  - asus-wmi:		Correctly handle HW without LEDs
  - fujitsu-laptop:	Battery charge control support
  - hp-wmi:		Support for new thermal profiles
  - ideapad-laptop:	Support for refresh rate key
  - intel/pmc:		Put AI accelerator (GNA) into D3 if it has no
 			driver to allow entry into low-power modes, and
 			temporarily removed Lunar Lake SSRAM support due
 			to breaking FW changes causing probe fail
 			(further breaking FW changes are still pending)
  - pmc/punit_atom:	Report devices that prevent reacing low power
 			levels
  - surface:		Fan speed function support
  - thinkpad_acpi:	Support for more sperial keys and complete the
 			list of models with non-standard fan registers
  - touchscreen_dmi:	New HW support
  - wmi:			Continued modernization efforts
  - Removal of obsoleted ledtrig-audio call and the related dependency
  - Debug & metrics interface improvements
  - Miscellaneous cleanups / fixes / improvements
 
 The following is an automated shortlog grouped by driver:
 
 acer-wmi:
  -  Add predator_v4 module parameter
  -  Add support for Acer PH16-71
 
 amd/hsmp:
  -  Add support for ACPI based probing
  -  Cache pci_dev in struct hsmp_socket
  -  Change devm_kzalloc() to devm_kcalloc()
  -  Check num_sockets against MAX_AMD_SOCKETS
  -  Create static func to handle platdev
  -  Define a struct to hold mailbox regs
  -  Move dev from platdev to hsmp_socket
  -  Move hsmp_test to probe
  -  Non-ACPI support for AMD F1A_M00~0Fh
  -  Remove extra parenthesis and add a space
  -  Restructure sysfs group creation
 
 amd/pmf:
  -  Add missing __iomem attribute to policy_base
  -  Add support to get APTS index numbers for static slider
  -  Add support to get sbios requests in PMF driver
  -  Add support to get sps default APTS index values
  -  Add support to notify sbios heart beat event
  -  Differentiate PMF ACPI versions
  -  Disable debugfs support for querying power thermals
  -  Do not use readl() for policy buffer access
  -  Fix possible out-of-bound memory accesses
  -  Fix return value of amd_pmf_start_policy_engine()
  -  Update sps power thermals according to the platform-profiles
  -  Use struct for cookie header
 
 asus-wmi:
  -  Consider device is absent when the read is ~0
  -  Revert: Support WMI event queue
 
 clk: x86:
  -  Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h
 
 dell-privacy:
  -  Remove usage of wmi_has_guid()
 
 Documentation/x86/amd/hsmp:
  -  Updating urls
 
 drivers/mellanox:
  -  Convert snprintf to sysfs_emit
 
 fujitsu-laptop:
  -  Add battery charge control support
 
 hp-wmi:
  -  Add thermal profile support for 8BAD boards
  -  Tidy up module source code
 
 ideapad-laptop:
  -  map Fn + R key to KEY_REFRESH_RATE_TOGGLE
  -  support Fn+R dual-function key
 
 Input:
  -  allocate keycode for Display refresh rate toggle
 
 intel/ifs:
  -  Add an entry rendezvous for SAF
  -  Add current batch number to trace output
  -  Remove unnecessary initialization of 'ret'
  -  Replace the exit rendezvous with an entry rendezvous for ARRAY_BIST
  -  Trace on all HT threads when executing a test
 
 intel/pmc/arl:
  -  Put GNA device in D3
 
 intel/pmc:
  -  Improve PKGC residency counters debug
 
 intel/pmc/lnl:
  -  Remove SSRAM support
 
 intel_scu_ipcutil:
  -  Make scu static
 
 intel_scu_pcidrv:
  -  Remove unused intel-mid.h
 
 intel_scu_wdt:
  -  Remove unused intel-mid.h
 
 intel/tpmi:
  -  Change vsec offset to u64
 
 intel/vsec:
  -  Remove nuisance message
 
 ISST:
  -  Allow reading core-power state on HWP disabled systems
 
 mlxbf-pmc:
  -  Cleanup signed/unsigned mix-up
  -  fix signedness bugs
  -  Ignore unsupported performance blocks
 
 mlxbf-pmc: mlxbf_pmc_event_list():
  -  make size ptr optional
 
 mlxbf-pmc:
  -  Replace uintN_t with kernel-style types
 
 mlxreg-hotplug:
  -  Remove redundant NULL-check
 
 pmc_atom:
  -  Annotate d3_sts register bit defines
  -  Check state of PMC clocks on s2idle
  -  Check state of PMC managed devices on s2idle
 
 silicom-platform:
  - clean up a check
 
 surface: aggregator_registry:
  -  add entry for fan speed
 
 thinkpad_acpi:
  -  Add more ThinkPads with non-standard reg address for fan
  -  Fix to correct wrong temp reporting on some ThinkPads
  -  remove redundant assignment to variable i
  -  Simplify thermal mode checking
  -  Support for mode FN key
 
 touchscreen_dmi:
  -  Add an extra entry for a variant of the Chuwi Vi8 tablet
 
 wmi:
  -  Always evaluate _WED when receiving an event
  -  Check if event data is not NULL
  -  Check if WMxx control method exists
  -  Do not instantiate older WMI drivers multiple times
  -  Ignore duplicated GUIDs in legacy matches
  -  Make input buffer mandatory when evaluating methods
  -  Prevent incompatible event driver from probing
  -  Remove obsolete duplicate GUID allowlist
  -  Remove unnecessary out-of-memory message
  -  Replace pr_err() with dev_err()
  -  Stop using ACPI device class
  -  Update documentation regarding _WED
  -  Use ACPI device name in netlink event
  -  Use FW_BUG when warning about missing control methods
 
 x86/atom:
  -  Check state of Punit managed devices on s2idle
 
 x86: ibm_rtl:
  -  make rtl_subsys const
 
 x86: wmi:
  -  make wmi_bus_type const
 
 platform/x86:
  -  make fw_attr_class constant
  -  remove obsolete calls to ledtrig_audio_get
 
 Merges:
  -  Merge tag 'platform-drivers-x86-v6.8-2' into pdx/for-next
  -  Merge tag 'platform-drivers-x86-v6.8-4' into pdx86/for-next
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Merge tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Ilpo Järvinen:

 - New acer-wmi HW support

 - Support for new revision of amd/pmf heartbeat notify

 - Correctly handle asus-wmi HW without LEDs

 - fujitsu-laptop battery charge control support

 - Support for new hp-wmi thermal profiles

 - Support ideapad-laptop refresh rate key

 - Put intel/pmc AI accelerator (GNA) into D3 if it has no driver to
   allow entry into low-power modes, and temporarily removed Lunar Lake
   SSRAM support due to breaking FW changes causing probe fail (further
   breaking FW changes are still pending)

 - Report pmc/punit_atom devices that prevent reacing low power levels

 - Surface Fan speed function support

 - Support for more sperial keys and complete the list of models with
   non-standard fan registers in thinkpad_acpi

 - New DMI touchscreen HW support

 - Continued modernization efforts of wmi

 - Removal of obsoleted ledtrig-audio call and the related dependency

 - Debug & metrics interface improvements

 - Miscellaneous cleanups / fixes / improvements

* tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (87 commits)
  platform/x86/intel/pmc: Improve PKGC residency counters debug
  platform/x86: asus-wmi: Consider device is absent when the read is ~0
  Documentation/x86/amd/hsmp: Updating urls
  platform/mellanox: mlxreg-hotplug: Remove redundant NULL-check
  platform/x86/amd/pmf: Update sps power thermals according to the platform-profiles
  platform/x86/amd/pmf: Add support to get sps default APTS index values
  platform/x86/amd/pmf: Add support to get APTS index numbers for static slider
  platform/x86/amd/pmf: Add support to notify sbios heart beat event
  platform/x86/amd/pmf: Add support to get sbios requests in PMF driver
  platform/x86/amd/pmf: Disable debugfs support for querying power thermals
  platform/x86/amd/pmf: Differentiate PMF ACPI versions
  x86/platform/atom: Check state of Punit managed devices on s2idle
  platform/x86: pmc_atom: Check state of PMC clocks on s2idle
  platform/x86: pmc_atom: Check state of PMC managed devices on s2idle
  platform/x86: pmc_atom: Annotate d3_sts register bit defines
  clk: x86: Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h
  platform/x86: make fw_attr_class constant
  platform/x86/intel/tpmi: Change vsec offset to u64
  platform/x86: intel_scu_pcidrv: Remove unused intel-mid.h
  platform/x86: intel_scu_wdt: Remove unused intel-mid.h
  ...
 2024-03-14 10:44:09 -07:00
Linus Torvalds
07abb19a9b Power management updates for 6.9-rc1 
- Allow the Energy Model to be updated dynamically (Lukasz Luba).
 
  - Add support for LZ4 compression algorithm to the hibernation image
    creation and loading code (Nikhil V).
 
  - Fix and clean up system suspend statistics collection (Rafael
    Wysocki).
 
  - Simplify device suspend and resume handling in the power management
    core code (Rafael Wysocki).
 
  - Fix PCI hibernation support description (Yiwei Lin).
 
  - Make hibernation take set_memory_ro() return values into account as
    appropriate (Christophe Leroy).
 
  - Set mem_sleep_current during kernel command line setup to avoid an
    ordering issue with handling it (Maulik Shah).
 
  - Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
    driver's system suspend callback (Qingliang Li).
 
  - Simplify pm_runtime_get_if_active() usage and add a replacement for
    pm_runtime_put_autosuspend() (Sakari Ailus).
 
  - Add a tracepoint for runtime_status changes tracking (Vilas Bhat).
 
  - Fix section title markdown in the runtime PM documentation (Yiwei
    Lin).
 
  - Enable preferred core support in the amd-pstate cpufreq driver (Meng
    Li).
 
  - Fix min_perf assignment in amd_pstate_adjust_perf() and make the
    min/max limit perf values in amd-pstate always stay within the
    (highest perf, lowest perf) range (Tor Vic, Meng Li).
 
  - Allow intel_pstate to assign model-specific values to strings used in
    the EPP sysfs interface and make it do so on Meteor Lake (Srinivas
    Pandruvada).
 
  - Drop long-unused cpudata::prev_cummulative_iowait from the
    intel_pstate cpufreq driver (Jiri Slaby).
 
  - Prevent scaling_cur_freq from exceeding scaling_max_freq when the
    latter is an inefficient frequency (Shivnandan Kumar).
 
  - Change default transition delay in cpufreq to 2ms (Qais Yousef).
 
  - Remove references to 10ms minimum sampling rate from comments in the
    cpufreq code (Pierre Gondois).
 
  - Honour transition_latency over transition_delay_us in cpufreq (Qais
    Yousef).
 
  - Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar).
 
  - General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
    Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
    Belova).
 
  - Update cpufreq-dt-platdev to block/approve devices (Richard Acayan).
 
  - Make the SCMI cpufreq driver get a transition delay value from
    firmware (Pierre Gondois).
 
  - Prevent the haltpoll cpuidle governor from shrinking guest
    poll_limit_ns below grow_start (Parshuram Sangle).
 
  - Avoid potential overflow in integer multiplication when computing
    cpuidle state parameters (C Cheng).
 
  - Adjust MWAIT hint target C-state computation in the ACPI cpuidle
    driver and in intel_idle to return a correct value for C0 (He
    Rongguang).
 
  - Address multiple issues in the TPMI RAPL driver and add support for
    new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui).
 
  - Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
    Lezcano).
 
  - Fix kernel-doc for dtpm_create_hierarchy() (Yang Li).
 
  - Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
    Norway Ananda).
 
  - Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil).
 
  - Fix a couple of warnings in the OPP core code related to W=1
    builds (Viresh Kumar).
 
  - Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
    Kumar).
 
  - Extend dev_pm_opp_data with turbo support (Sibi Sankar).
 
  - dt-bindings: drop maxItems from inner items (David Heidelberg).
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Merge tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "From the functional perspective, the most significant change here is
  the addition of support for Energy Models that can be updated
  dynamically at run time.

  There is also the addition of LZ4 compression support for hibernation,
  the new preferred core support in amd-pstate, new platforms support in
  the Intel RAPL driver, new model-specific EPP handling in intel_pstate
  and more.

  Apart from that, the cpufreq default transition delay is reduced from
  10 ms to 2 ms (along with some related adjustments), the system
  suspend statistics code undergoes a significant rework and there is a
  usual bunch of fixes and code cleanups all over.

  Specifics:

   - Allow the Energy Model to be updated dynamically (Lukasz Luba)

   - Add support for LZ4 compression algorithm to the hibernation image
     creation and loading code (Nikhil V)

   - Fix and clean up system suspend statistics collection (Rafael
     Wysocki)

   - Simplify device suspend and resume handling in the power management
     core code (Rafael Wysocki)

   - Fix PCI hibernation support description (Yiwei Lin)

   - Make hibernation take set_memory_ro() return values into account as
     appropriate (Christophe Leroy)

   - Set mem_sleep_current during kernel command line setup to avoid an
     ordering issue with handling it (Maulik Shah)

   - Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
     driver's system suspend callback (Qingliang Li)

   - Simplify pm_runtime_get_if_active() usage and add a replacement for
     pm_runtime_put_autosuspend() (Sakari Ailus)

   - Add a tracepoint for runtime_status changes tracking (Vilas Bhat)

   - Fix section title markdown in the runtime PM documentation (Yiwei
     Lin)

   - Enable preferred core support in the amd-pstate cpufreq driver
     (Meng Li)

   - Fix min_perf assignment in amd_pstate_adjust_perf() and make the
     min/max limit perf values in amd-pstate always stay within the
     (highest perf, lowest perf) range (Tor Vic, Meng Li)

   - Allow intel_pstate to assign model-specific values to strings used
     in the EPP sysfs interface and make it do so on Meteor Lake
     (Srinivas Pandruvada)

   - Drop long-unused cpudata::prev_cummulative_iowait from the
     intel_pstate cpufreq driver (Jiri Slaby)

   - Prevent scaling_cur_freq from exceeding scaling_max_freq when the
     latter is an inefficient frequency (Shivnandan Kumar)

   - Change default transition delay in cpufreq to 2ms (Qais Yousef)

   - Remove references to 10ms minimum sampling rate from comments in
     the cpufreq code (Pierre Gondois)

   - Honour transition_latency over transition_delay_us in cpufreq (Qais
     Yousef)

   - Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar)

   - General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
     Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
     Belova)

   - Update cpufreq-dt-platdev to block/approve devices (Richard Acayan)

   - Make the SCMI cpufreq driver get a transition delay value from
     firmware (Pierre Gondois)

   - Prevent the haltpoll cpuidle governor from shrinking guest
     poll_limit_ns below grow_start (Parshuram Sangle)

   - Avoid potential overflow in integer multiplication when computing
     cpuidle state parameters (C Cheng)

   - Adjust MWAIT hint target C-state computation in the ACPI cpuidle
     driver and in intel_idle to return a correct value for C0 (He
     Rongguang)

   - Address multiple issues in the TPMI RAPL driver and add support for
     new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui)

   - Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
     Lezcano)

   - Fix kernel-doc for dtpm_create_hierarchy() (Yang Li)

   - Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
     Norway Ananda)

   - Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil)

   - Fix a couple of warnings in the OPP core code related to W=1 builds
     (Viresh Kumar)

   - Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
     Kumar)

   - Extend dev_pm_opp_data with turbo support (Sibi Sankar)

   - dt-bindings: drop maxItems from inner items (David Heidelberg)"

* tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (95 commits)
  dt-bindings: opp: drop maxItems from inner items
  OPP: debugfs: Fix warning around icc_get_name()
  OPP: debugfs: Fix warning with W=1 builds
  cpufreq: Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h
  OPP: Extend dev_pm_opp_data with turbo support
  Fix cpupower-frequency-info.1 man page typo
  cpufreq: scmi: Set transition_delay_us
  firmware: arm_scmi: Populate fast channel rate_limit
  firmware: arm_scmi: Populate perf commands rate_limit
  cpuidle: ACPI/intel: fix MWAIT hint target C-state computation
  PM: sleep: wakeirq: fix wake irq warning in system suspend
  powercap: dtpm: Fix kernel-doc for dtpm_create_hierarchy() function
  cpufreq: Don't unregister cpufreq cooling on CPU hotplug
  PM: suspend: Set mem_sleep_current during kernel command line setup
  cpufreq: Honour transition_latency over transition_delay_us
  cpufreq: Limit resolving a frequency to policy min/max
  Documentation: PM: Fix runtime_pm.rst markdown syntax
  cpufreq: amd-pstate: adjust min/max limit perf
  cpufreq: Remove references to 10ms min sampling rate
  cpufreq: intel_pstate: Update default EPPs for Meteor Lake
  ...
 2024-03-13 11:40:06 -07:00
Linus Torvalds
9187210eee Networking changes for 6.9. 
Core & protocols
 ----------------
 
  - Large effort by Eric to lower rtnl_lock pressure and remove locks:
 
    - Make commonly used parts of rtnetlink (address, route dumps etc.)
      lockless, protected by RCU instead of rtnl_lock.
 
    - Add a netns exit callback which already holds rtnl_lock,
      allowing netns exit to take rtnl_lock once in the core
      instead of once for each driver / callback.
 
    - Remove locks / serialization in the socket diag interface.
 
    - Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
 
    - Remove the dev_base_lock, depend on RCU where necessary.
 
  - Support busy polling on a per-epoll context basis. Poll length
    and budget parameters can be set independently of system defaults.
 
  - Introduce struct net_hotdata, to make sure read-mostly global config
    variables fit in as few cache lines as possible.
 
  - Add optional per-nexthop statistics to ease monitoring / debug
    of ECMP imbalance problems.
 
  - Support TCP_NOTSENT_LOWAT in MPTCP.
 
  - Ensure that IPv6 temporary addresses' preferred lifetimes are long
    enough, compared to other configured lifetimes, and at least 2 sec.
 
  - Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
 
  - Add support for the independent control state machine for bonding
    per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
    control state machine.
 
  - Add "network ID" to MCTP socket APIs to support hosts with multiple
    disjoint MCTP networks.
 
  - Re-use the mono_delivery_time skbuff bit for packets which user
    space wants to be sent at a specified time. Maintain the timing
    information while traversing veth links, bridge etc.
 
  - Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
 
  - Simplify many places iterating over netdevs by using an xarray
    instead of a hash table walk (hash table remains in place, for
    use on fastpaths).
 
  - Speed up scanning for expired routes by keeping a dedicated list.
 
  - Speed up "generic" XDP by trying harder to avoid large allocations.
 
  - Support attaching arbitrary metadata to netconsole messages.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce
    VM_SPARSE kind and vm_area_[un]map_pages (used by bpf_arena).
 
  - Rework selftest harness to enable the use of the full range of
    ksft exit code (pass, fail, skip, xfail, xpass).
 
 Netfilter
 ---------
 
  - Allow userspace to define a table that is exclusively owned by a daemon
    (via netlink socket aliveness) without auto-removing this table when
    the userspace program exits. Such table gets marked as orphaned and
    a restarting management daemon can re-attach/regain ownership.
 
  - Speed up element insertions to nftables' concatenated-ranges set type.
    Compact a few related data structures.
 
 BPF
 ---
 
  - Add BPF token support for delegating a subset of BPF subsystem
    functionality from privileged system-wide daemons such as systemd
    through special mount options for userns-bound BPF fs to a trusted
    & unprivileged application.
 
  - Introduce bpf_arena which is sparse shared memory region between BPF
    program and user space where structures inside the arena can have
    pointers to other areas of the arena, and pointers work seamlessly
    for both user-space programs and BPF programs.
 
  - Introduce may_goto instruction that is a contract between the verifier
    and the program. The verifier allows the program to loop assuming it's
    behaving well, but reserves the right to terminate it.
 
  - Extend the BPF verifier to enable static subprog calls in spin lock
    critical sections.
 
  - Support registration of struct_ops types from modules which helps
    projects like fuse-bpf that seeks to implement a new struct_ops type.
 
  - Add support for retrieval of cookies for perf/kprobe multi links.
 
  - Support arbitrary TCP SYN cookie generation / validation in the TC
    layer with BPF to allow creating SYN flood handling in BPF firewalls.
 
  - Add code generation to inline the bpf_kptr_xchg() helper which
    improves performance when stashing/popping the allocated BPF objects.
 
 Wireless
 --------
 
  - Add SPP (signaling and payload protected) AMSDU support.
 
  - Support wider bandwidth OFDMA, as required for EHT operation.
 
 Driver API
 ----------
 
  - Major overhaul of the Energy Efficient Ethernet internals to support
    new link modes (2.5GE, 5GE), share more code between drivers
    (especially those using phylib), and encourage more uniform behavior.
    Convert and clean up drivers.
 
  - Define an API for querying per netdev queue statistics from drivers.
 
  - IPSec: account in global stats for fully offloaded sessions.
 
  - Create a concept of Ethernet PHY Packages at the Device Tree level,
    to allow parameterizing the existing PHY package code.
 
  - Enable Rx hashing (RSS) on GTP protocol fields.
 
 Misc
 ----
 
  - Improvements and refactoring all over networking selftests.
 
  - Create uniform module aliases for TC classifiers, actions,
    and packet schedulers to simplify creating modprobe policies.
 
  - Address all missing MODULE_DESCRIPTION() warnings in networking.
 
  - Extend the Netlink descriptions in YAML to cover message encapsulation
    or "Netlink polymorphism", where interpretation of nested attributes
    depends on link type, classifier type or some other "class type".
 
 Drivers
 -------
 
  - Ethernet high-speed NICs:
    - Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
    - Intel (100G, ice, idpf):
      - support E825-C devices
    - nVidia/Mellanox:
      - support devices with one port and multiple PCIe links
    - Broadcom (bnxt):
      - support n-tuple filters
      - support configuring the RSS key
    - Wangxun (ngbe/txgbe):
      - implement irq_domain for TXGBE's sub-interrupts
    - Pensando/AMD:
      - support XDP
      - optimize queue submission and wakeup handling (+17% bps)
      - optimize struct layout, saving 28% of memory on queues
 
  - Ethernet NICs embedded and virtual:
    - Google cloud vNIC:
      - refactor driver to perform memory allocations for new queue
        config before stopping and freeing the old queue memory
    - Synopsys (stmmac):
      - obey queueMaxSDU and implement counters required by 802.1Qbv
    - Renesas (ravb):
      - support packet checksum offload
      - suspend to RAM and runtime PM support
 
  - Ethernet switches:
    - nVidia/Mellanox:
      - support for nexthop group statistics
    - Microchip:
      - ksz8: implement PHY loopback
      - add support for KSZ8567, a 7-port 10/100Mbps switch
 
  - PTP:
    - New driver for RENESAS FemtoClock3 Wireless clock generator.
    - Support OCP PTP cards designed and built by Adva.
 
  - CAN:
    - Support recvmsg() flags for own, local and remote traffic
      on CAN BCM sockets.
    - Support for esd GmbH PCIe/402 CAN device family.
    - m_can:
      - Rx/Tx submission coalescing
      - wake on frame Rx
 
  - WiFi:
    - Intel (iwlwifi):
      - enable signaling and payload protected A-MSDUs
      - support wider-bandwidth OFDMA
      - support for new devices
      - bump FW API to 89 for AX devices; 90 for BZ/SC devices
    - MediaTek (mt76):
      - mt7915: newer ADIE version support
      - mt7925: radio temperature sensor support
    - Qualcomm (ath11k):
      - support 6 GHz station power modes: Low Power Indoor (LPI),
        Standard Power) SP and Very Low Power (VLP)
      - QCA6390 & WCN6855: support 2 concurrent station interfaces
      - QCA2066 support
    - Qualcomm (ath12k):
      - refactoring in preparation for Multi-Link Operation (MLO) support
      - 1024 Block Ack window size support
      - firmware-2.bin support
      - support having multiple identical PCI devices (firmware needs to
        have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
      - QCN9274: support split-PHY devices
      - WCN7850: enable Power Save Mode in station mode
      - WCN7850: P2P support
    - RealTek:
      - rtw88: support for more rtw8811cu and rtw8821cu devices
      - rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
      - rtlwifi: speed up USB firmware initialization
      - rtwl8xxxu:
        - RTL8188F: concurrent interface support
        - Channel Switch Announcement (CSA) support in AP mode
    - Broadcom (brcmfmac):
      - per-vendor feature support
      - per-vendor SAE password setup
      - DMI nvram filename quirk for ACEPC W5 Pro
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Large effort by Eric to lower rtnl_lock pressure and remove locks:

      - Make commonly used parts of rtnetlink (address, route dumps
        etc) lockless, protected by RCU instead of rtnl_lock.

      - Add a netns exit callback which already holds rtnl_lock,
        allowing netns exit to take rtnl_lock once in the core instead
        of once for each driver / callback.

      - Remove locks / serialization in the socket diag interface.

      - Remove 6 calls to synchronize_rcu() while holding rtnl_lock.

      - Remove the dev_base_lock, depend on RCU where necessary.

   - Support busy polling on a per-epoll context basis. Poll length and
     budget parameters can be set independently of system defaults.

   - Introduce struct net_hotdata, to make sure read-mostly global
     config variables fit in as few cache lines as possible.

   - Add optional per-nexthop statistics to ease monitoring / debug of
     ECMP imbalance problems.

   - Support TCP_NOTSENT_LOWAT in MPTCP.

   - Ensure that IPv6 temporary addresses' preferred lifetimes are long
     enough, compared to other configured lifetimes, and at least 2 sec.

   - Support forwarding of ICMP Error messages in IPSec, per RFC 4301.

   - Add support for the independent control state machine for bonding
     per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
     control state machine.

   - Add "network ID" to MCTP socket APIs to support hosts with multiple
     disjoint MCTP networks.

   - Re-use the mono_delivery_time skbuff bit for packets which user
     space wants to be sent at a specified time. Maintain the timing
     information while traversing veth links, bridge etc.

   - Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.

   - Simplify many places iterating over netdevs by using an xarray
     instead of a hash table walk (hash table remains in place, for use
     on fastpaths).

   - Speed up scanning for expired routes by keeping a dedicated list.

   - Speed up "generic" XDP by trying harder to avoid large allocations.

   - Support attaching arbitrary metadata to netconsole messages.

  Things we sprinkled into general kernel code:

   - Enforce VM_IOREMAP flag and range in ioremap_page_range and
     introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
     bpf_arena).

   - Rework selftest harness to enable the use of the full range of ksft
     exit code (pass, fail, skip, xfail, xpass).

  Netfilter:

   - Allow userspace to define a table that is exclusively owned by a
     daemon (via netlink socket aliveness) without auto-removing this
     table when the userspace program exits. Such table gets marked as
     orphaned and a restarting management daemon can re-attach/regain
     ownership.

   - Speed up element insertions to nftables' concatenated-ranges set
     type. Compact a few related data structures.

  BPF:

   - Add BPF token support for delegating a subset of BPF subsystem
     functionality from privileged system-wide daemons such as systemd
     through special mount options for userns-bound BPF fs to a trusted
     & unprivileged application.

   - Introduce bpf_arena which is sparse shared memory region between
     BPF program and user space where structures inside the arena can
     have pointers to other areas of the arena, and pointers work
     seamlessly for both user-space programs and BPF programs.

   - Introduce may_goto instruction that is a contract between the
     verifier and the program. The verifier allows the program to loop
     assuming it's behaving well, but reserves the right to terminate
     it.

   - Extend the BPF verifier to enable static subprog calls in spin lock
     critical sections.

   - Support registration of struct_ops types from modules which helps
     projects like fuse-bpf that seeks to implement a new struct_ops
     type.

   - Add support for retrieval of cookies for perf/kprobe multi links.

   - Support arbitrary TCP SYN cookie generation / validation in the TC
     layer with BPF to allow creating SYN flood handling in BPF
     firewalls.

   - Add code generation to inline the bpf_kptr_xchg() helper which
     improves performance when stashing/popping the allocated BPF
     objects.

  Wireless:

   - Add SPP (signaling and payload protected) AMSDU support.

   - Support wider bandwidth OFDMA, as required for EHT operation.

  Driver API:

   - Major overhaul of the Energy Efficient Ethernet internals to
     support new link modes (2.5GE, 5GE), share more code between
     drivers (especially those using phylib), and encourage more
     uniform behavior. Convert and clean up drivers.

   - Define an API for querying per netdev queue statistics from
     drivers.

   - IPSec: account in global stats for fully offloaded sessions.

   - Create a concept of Ethernet PHY Packages at the Device Tree level,
     to allow parameterizing the existing PHY package code.

   - Enable Rx hashing (RSS) on GTP protocol fields.

  Misc:

   - Improvements and refactoring all over networking selftests.

   - Create uniform module aliases for TC classifiers, actions, and
     packet schedulers to simplify creating modprobe policies.

   - Address all missing MODULE_DESCRIPTION() warnings in networking.

   - Extend the Netlink descriptions in YAML to cover message
     encapsulation or "Netlink polymorphism", where interpretation of
     nested attributes depends on link type, classifier type or some
     other "class type".

  Drivers:

   - Ethernet high-speed NICs:
      - Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
      - Intel (100G, ice, idpf):
         - support E825-C devices
      - nVidia/Mellanox:
         - support devices with one port and multiple PCIe links
      - Broadcom (bnxt):
         - support n-tuple filters
         - support configuring the RSS key
      - Wangxun (ngbe/txgbe):
         - implement irq_domain for TXGBE's sub-interrupts
      - Pensando/AMD:
         - support XDP
         - optimize queue submission and wakeup handling (+17% bps)
         - optimize struct layout, saving 28% of memory on queues

   - Ethernet NICs embedded and virtual:
      - Google cloud vNIC:
         - refactor driver to perform memory allocations for new queue
           config before stopping and freeing the old queue memory
      - Synopsys (stmmac):
         - obey queueMaxSDU and implement counters required by 802.1Qbv
      - Renesas (ravb):
         - support packet checksum offload
         - suspend to RAM and runtime PM support

   - Ethernet switches:
      - nVidia/Mellanox:
         - support for nexthop group statistics
      - Microchip:
         - ksz8: implement PHY loopback
         - add support for KSZ8567, a 7-port 10/100Mbps switch

   - PTP:
      - New driver for RENESAS FemtoClock3 Wireless clock generator.
      - Support OCP PTP cards designed and built by Adva.

   - CAN:
      - Support recvmsg() flags for own, local and remote traffic on CAN
        BCM sockets.
      - Support for esd GmbH PCIe/402 CAN device family.
      - m_can:
         - Rx/Tx submission coalescing
         - wake on frame Rx

   - WiFi:
      - Intel (iwlwifi):
         - enable signaling and payload protected A-MSDUs
         - support wider-bandwidth OFDMA
         - support for new devices
         - bump FW API to 89 for AX devices; 90 for BZ/SC devices
      - MediaTek (mt76):
         - mt7915: newer ADIE version support
         - mt7925: radio temperature sensor support
      - Qualcomm (ath11k):
         - support 6 GHz station power modes: Low Power Indoor (LPI),
           Standard Power) SP and Very Low Power (VLP)
         - QCA6390 & WCN6855: support 2 concurrent station interfaces
         - QCA2066 support
      - Qualcomm (ath12k):
         - refactoring in preparation for Multi-Link Operation (MLO)
           support
         - 1024 Block Ack window size support
         - firmware-2.bin support
         - support having multiple identical PCI devices (firmware needs
           to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
         - QCN9274: support split-PHY devices
         - WCN7850: enable Power Save Mode in station mode
         - WCN7850: P2P support
      - RealTek:
         - rtw88: support for more rtw8811cu and rtw8821cu devices
         - rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
         - rtlwifi: speed up USB firmware initialization
         - rtwl8xxxu:
             - RTL8188F: concurrent interface support
             - Channel Switch Announcement (CSA) support in AP mode
      - Broadcom (brcmfmac):
         - per-vendor feature support
         - per-vendor SAE password setup
         - DMI nvram filename quirk for ACEPC W5 Pro"

* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
  nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
  nexthop: Fix out-of-bounds access during attribute validation
  nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
  nexthop: Only parse NHA_OP_FLAGS for get messages that require it
  bpf: move sleepable flag from bpf_prog_aux to bpf_prog
  bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
  selftests/bpf: Add kprobe multi triggering benchmarks
  ptp: Move from simple ida to xarray
  vxlan: Remove generic .ndo_get_stats64
  vxlan: Do not alloc tstats manually
  devlink: Add comments to use netlink gen tool
  nfp: flower: handle acti_netdevs allocation failure
  net/packet: Add getsockopt support for PACKET_COPY_THRESH
  net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
  selftests/bpf: Add bpf_arena_htab test.
  selftests/bpf: Add bpf_arena_list test.
  selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
  bpf: Add helper macro bpf_addr_space_cast()
  libbpf: Recognize __arena global variables.
  bpftool: Recognize arena map type
  ...
 2024-03-12 17:44:08 -07:00
Linus Torvalds
a01c9fe323 NFSD 6.9 Release Notes 
The bulk of the patches for this release are optimizations, code
 clean-ups, and minor bug fixes.
 
 One new feature to mention is that NFSD administrators now have the
 ability to revoke NFSv4 open and lock state. NFSD's NFSv3 support
 has had this capability for some time.
 
 As always I am grateful to NFSD contributors, reviewers, and
 testers.
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Merge tag 'nfsd-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "The bulk of the patches for this release are optimizations, code
  clean-ups, and minor bug fixes.

  One new feature to mention is that NFSD administrators now have the
  ability to revoke NFSv4 open and lock state. NFSD's NFSv3 support has
  had this capability for some time.

  As always I am grateful to NFSD contributors, reviewers, and testers"

* tag 'nfsd-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (75 commits)
  NFSD: Clean up nfsd4_encode_replay()
  NFSD: send OP_CB_RECALL_ANY to clients when number of delegations reaches its limit
  NFSD: Document nfsd_setattr() fill-attributes behavior
  nfsd: Fix NFSv3 atomicity bugs in nfsd_setattr()
  nfsd: Fix a regression in nfsd_setattr()
  NFSD: OP_CB_RECALL_ANY should recall both read and write delegations
  NFSD: handle GETATTR conflict with write delegation
  NFSD: add support for CB_GETATTR callback
  NFSD: Document the phases of CREATE_SESSION
  NFSD: Fix the NFSv4.1 CREATE_SESSION operation
  nfsd: clean up comments over nfs4_client definition
  svcrdma: Add Write chunk WRs to the RPC's Send WR chain
  svcrdma: Post WRs for Write chunks in svc_rdma_sendto()
  svcrdma: Post the Reply chunk and Send WR together
  svcrdma: Move write_info for Reply chunks into struct svc_rdma_send_ctxt
  svcrdma: Post Send WR chain
  svcrdma: Fix retry loop in svc_rdma_send()
  svcrdma: Prevent a UAF in svc_rdma_send()
  svcrdma: Fix SQ wake-ups
  svcrdma: Increase the per-transport rw_ctx count
  ...
 2024-03-12 14:27:37 -07:00
Linus Torvalds
d08c407f71 A large set of updates and features for timers and timekeeping: 
- The hierarchical timer pull model
 
     When timer wheel timers are armed they are placed into the timer wheel
     of a CPU which is likely to be busy at the time of expiry. This is done
     to avoid wakeups on potentially idle CPUs.
 
     This is wrong in several aspects:
 
      1) The heuristics to select the target CPU are wrong by
         definition as the chance to get the prediction right is close
         to zero.
 
      2) Due to #1 it is possible that timers are accumulated on a
         single target CPU
 
      3) The required computation in the enqueue path is just overhead for
      	dubious value especially under the consideration that the vast
      	majority of timer wheel timers are either canceled or rearmed
      	before they expire.
 
     The timer pull model avoids the above by removing the target
     computation on enqueue and queueing timers always on the CPU on which
     they get armed.
 
     This is achieved by having separate wheels for CPU pinned timers and
     global timers which do not care about where they expire.
 
     As long as a CPU is busy it handles both the pinned and the global
     timers which are queued on the CPU local timer wheels.
 
     When a CPU goes idle it evaluates its own timer wheels:
 
       - If the first expiring timer is a pinned timer, then the global
       	timers can be ignored as the CPU will wake up before they expire.
 
       - If the first expiring timer is a global timer, then the expiry time
         is propagated into the timer pull hierarchy and the CPU makes sure
         to wake up for the first pinned timer.
 
     The timer pull hierarchy organizes CPUs in groups of eight at the
     lowest level and at the next levels groups of eight groups up to the
     point where no further aggregation of groups is required, i.e. the
     number of levels is log8(NR_CPUS). The magic number of eight has been
     established by experimention, but can be adjusted if needed.
 
     In each group one busy CPU acts as the migrator. It's only one CPU to
     avoid lock contention on remote timer wheels.
 
     The migrator CPU checks in its own timer wheel handling whether there
     are other CPUs in the group which have gone idle and have global timers
     to expire. If there are global timers to expire, the migrator locks the
     remote CPU timer wheel and handles the expiry.
 
     Depending on the group level in the hierarchy this handling can require
     to walk the hierarchy downwards to the CPU level.
 
     Special care is taken when the last CPU goes idle. At this point the
     CPU is the systemwide migrator at the top of the hierarchy and it
     therefore cannot delegate to the hierarchy. It needs to arm its own
     timer device to expire either at the first expiring timer in the
     hierarchy or at the first CPU local timer, which ever expires first.
 
     This completely removes the overhead from the enqueue path, which is
     e.g. for networking a true hotpath and trades it for a slightly more
     complex idle path.
 
     This has been in development for a couple of years and the final series
     has been extensively tested by various teams from silicon vendors and
     ran through extensive CI.
 
     There have been slight performance improvements observed on network
     centric workloads and an Intel team confirmed that this allows them to
     power down a die completely on a mult-die socket for the first time in
     a mostly idle scenario.
 
     There is only one outstanding ~1.5% regression on a specific overloaded
     netperf test which is currently investigated, but the rest is either
     positive or neutral performance wise and positive on the power
     management side.
 
   - Fixes for the timekeeping interpolation code for cross-timestamps:
 
     cross-timestamps are used for PTP to get snapshots from hardware timers
     and interpolated them back to clock MONOTONIC. The changes address a
     few corner cases in the interpolation code which got the math and logic
     wrong.
 
   - Simplifcation of the clocksource watchdog retry logic to automatically
     adjust to handle larger systems correctly instead of having more
     incomprehensible command line parameters.
 
   - Treewide consolidation of the VDSO data structures.
 
   - The usual small improvements and cleanups all over the place.
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Merge tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:
 "A large set of updates and features for timers and timekeeping:

   - The hierarchical timer pull model

     When timer wheel timers are armed they are placed into the timer
     wheel of a CPU which is likely to be busy at the time of expiry.
     This is done to avoid wakeups on potentially idle CPUs.

     This is wrong in several aspects:

       1) The heuristics to select the target CPU are wrong by
          definition as the chance to get the prediction right is
          close to zero.

       2) Due to #1 it is possible that timers are accumulated on
          a single target CPU

       3) The required computation in the enqueue path is just overhead
          for dubious value especially under the consideration that the
          vast majority of timer wheel timers are either canceled or
          rearmed before they expire.

     The timer pull model avoids the above by removing the target
     computation on enqueue and queueing timers always on the CPU on
     which they get armed.

     This is achieved by having separate wheels for CPU pinned timers
     and global timers which do not care about where they expire.

     As long as a CPU is busy it handles both the pinned and the global
     timers which are queued on the CPU local timer wheels.

     When a CPU goes idle it evaluates its own timer wheels:

       - If the first expiring timer is a pinned timer, then the global
         timers can be ignored as the CPU will wake up before they
         expire.

       - If the first expiring timer is a global timer, then the expiry
         time is propagated into the timer pull hierarchy and the CPU
         makes sure to wake up for the first pinned timer.

     The timer pull hierarchy organizes CPUs in groups of eight at the
     lowest level and at the next levels groups of eight groups up to
     the point where no further aggregation of groups is required, i.e.
     the number of levels is log8(NR_CPUS). The magic number of eight
     has been established by experimention, but can be adjusted if
     needed.

     In each group one busy CPU acts as the migrator. It's only one CPU
     to avoid lock contention on remote timer wheels.

     The migrator CPU checks in its own timer wheel handling whether
     there are other CPUs in the group which have gone idle and have
     global timers to expire. If there are global timers to expire, the
     migrator locks the remote CPU timer wheel and handles the expiry.

     Depending on the group level in the hierarchy this handling can
     require to walk the hierarchy downwards to the CPU level.

     Special care is taken when the last CPU goes idle. At this point
     the CPU is the systemwide migrator at the top of the hierarchy and
     it therefore cannot delegate to the hierarchy. It needs to arm its
     own timer device to expire either at the first expiring timer in
     the hierarchy or at the first CPU local timer, which ever expires
     first.

     This completely removes the overhead from the enqueue path, which
     is e.g. for networking a true hotpath and trades it for a slightly
     more complex idle path.

     This has been in development for a couple of years and the final
     series has been extensively tested by various teams from silicon
     vendors and ran through extensive CI.

     There have been slight performance improvements observed on network
     centric workloads and an Intel team confirmed that this allows them
     to power down a die completely on a mult-die socket for the first
     time in a mostly idle scenario.

     There is only one outstanding ~1.5% regression on a specific
     overloaded netperf test which is currently investigated, but the
     rest is either positive or neutral performance wise and positive on
     the power management side.

   - Fixes for the timekeeping interpolation code for cross-timestamps:

     cross-timestamps are used for PTP to get snapshots from hardware
     timers and interpolated them back to clock MONOTONIC. The changes
     address a few corner cases in the interpolation code which got the
     math and logic wrong.

   - Simplifcation of the clocksource watchdog retry logic to
     automatically adjust to handle larger systems correctly instead of
     having more incomprehensible command line parameters.

   - Treewide consolidation of the VDSO data structures.

   - The usual small improvements and cleanups all over the place"

* tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits)
  timer/migration: Fix quick check reporting late expiry
  tick/sched: Fix build failure for CONFIG_NO_HZ_COMMON=n
  vdso/datapage: Quick fix - use asm/page-def.h for ARM64
  timers: Assert no next dyntick timer look-up while CPU is offline
  tick: Assume timekeeping is correctly handed over upon last offline idle call
  tick: Shut down low-res tick from dying CPU
  tick: Split nohz and highres features from nohz_mode
  tick: Move individual bit features to debuggable mask accesses
  tick: Move got_idle_tick away from common flags
  tick: Assume the tick can't be stopped in NOHZ_MODE_INACTIVE mode
  tick: Move broadcast cancellation up to CPUHP_AP_TICK_DYING
  tick: Move tick cancellation up to CPUHP_AP_TICK_DYING
  tick: Start centralizing tick related CPU hotplug operations
  tick/sched: Don't clear ts::next_tick again in can_stop_idle_tick()
  tick/sched: Rename tick_nohz_stop_sched_tick() to tick_nohz_full_stop_tick()
  tick: Use IS_ENABLED() whenever possible
  tick/sched: Remove useless oneshot ifdeffery
  tick/nohz: Remove duplicate between lowres and highres handlers
  tick/nohz: Remove duplicate between tick_nohz_switch_to_nohz() and tick_setup_sched_timer()
  hrtimer: Select housekeeping CPU during migration
  ...
 2024-03-11 14:38:26 -07:00
Linus Torvalds
d2c84bdce2 for-6.9/io_uring-20240310 
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Merge tag 'for-6.9/io_uring-20240310' of git://git.kernel.dk/linux

Pull io_uring updates from Jens Axboe:

 - Make running of task_work internal loops more fair, and unify how the
   different methods deal with them (me)

 - Support for per-ring NAPI. The two minor networking patches are in a
   shared branch with netdev (Stefan)

 - Add support for truncate (Tony)

 - Export SQPOLL utilization stats (Xiaobing)

 - Multishot fixes (Pavel)

 - Fix for a race in manipulating the request flags via poll (Pavel)

 - Cleanup the multishot checking by making it generic, moving it out of
   opcode handlers (Pavel)

 - Various tweaks and cleanups (me, Kunwu, Alexander)

* tag 'for-6.9/io_uring-20240310' of git://git.kernel.dk/linux: (53 commits)
  io_uring: Fix sqpoll utilization check racing with dying sqpoll
  io_uring/net: dedup io_recv_finish req completion
  io_uring: refactor DEFER_TASKRUN multishot checks
  io_uring: fix mshot io-wq checks
  io_uring/net: add io_req_msg_cleanup() helper
  io_uring/net: simplify msghd->msg_inq checking
  io_uring/kbuf: rename REQ_F_PARTIAL_IO to REQ_F_BL_NO_RECYCLE
  io_uring/net: remove dependency on REQ_F_PARTIAL_IO for sr->done_io
  io_uring/net: correctly handle multishot recvmsg retry setup
  io_uring/net: clear REQ_F_BL_EMPTY in the multishot retry handler
  io_uring: fix io_queue_proc modifying req->flags
  io_uring: fix mshot read defer taskrun cqe posting
  io_uring/net: fix overflow check in io_recvmsg_mshot_prep()
  io_uring/net: correct the type of variable
  io_uring/sqpoll: statistics of the true utilization of sq threads
  io_uring/net: move recv/recvmsg flags out of retry loop
  io_uring/kbuf: flag request if buffer pool is empty after buffer pick
  io_uring/net: improve the usercopy for sendmsg/recvmsg
  io_uring/net: move receive multishot out of the generic msghdr path
  io_uring/net: unify how recvmsg and sendmsg copy in the msghdr
  ...
 2024-03-11 11:35:31 -07:00
Linus Torvalds
0c750012e8 vfs-6.9.file 
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Merge tag 'vfs-6.9.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull file locking updates from Christian Brauner:
 "A few years ago struct file_lock_context was added to allow for
  separate lists to track different types of file locks instead of using
  a singly-linked list for all of them.

  Now leases no longer need to be tracked using struct file_lock.
  However, a lot of the infrastructure is identical for leases and locks
  so separating them isn't trivial.

  This splits a group of fields used by both file locks and leases into
  a new struct file_lock_core. The new core struct is embedded in struct
  file_lock. Coccinelle was used to convert a lot of the callers to deal
  with the move, with the remaining 25% or so converted by hand.

  Afterwards several internal functions in fs/locks.c are made to work
  with struct file_lock_core. Ultimately this allows to split struct
  file_lock into struct file_lock and struct file_lease. The file lease
  APIs are then converted to take struct file_lease"

* tag 'vfs-6.9.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (51 commits)
  filelock: fix deadlock detection in POSIX locking
  filelock: always define for_each_file_lock()
  smb: remove redundant check
  filelock: don't do security checks on nfsd setlease calls
  filelock: split leases out of struct file_lock
  filelock: remove temporary compatibility macros
  smb/server: adapt to breakup of struct file_lock
  smb/client: adapt to breakup of struct file_lock
  ocfs2: adapt to breakup of struct file_lock
  nfsd: adapt to breakup of struct file_lock
  nfs: adapt to breakup of struct file_lock
  lockd: adapt to breakup of struct file_lock
  fuse: adapt to breakup of struct file_lock
  gfs2: adapt to breakup of struct file_lock
  dlm: adapt to breakup of struct file_lock
  ceph: adapt to breakup of struct file_lock
  afs: adapt to breakup of struct file_lock
  9p: adapt to breakup of struct file_lock
  filelock: convert seqfile handling to use file_lock_core
  filelock: convert locks_translate_pid to take file_lock_core
  ...
 2024-03-11 10:37:45 -07:00
Olga Kornievskaia
7e5ae43b2d NFSv4.1: add tracepoint to trunked nfs4_exchange_id calls 
Add a tracepoint to track when the client sends EXCHANGE_ID to test
a new transport for session trunking.

nfs4_detect_session_trunking() tests for trunking and returns
EINVAL if trunking can't be done, add EINVAL mapping to
show_nfs4_status() in tracepoints.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2024-03-09 09:14:50 -05:00
fuyuanli
caabd859c4 tcp: Add skb addr and sock addr to arguments of tracepoint tcp_probe. 
It is useful to expose skb addr and sock addr to user in tracepoint
tcp_probe, so that we can get more information while monitoring
receiving of tcp data, by ebpf or other ways.

For example, we need to identify a packet by seq and end_seq when
calculate transmit latency between layer 2 and layer 4 by ebpf, but which is
not available in tcp_probe, so we can only use kprobe hooking
tcp_rcv_established to get them. But we can use tcp_probe directly if skb
addr and sock addr are available, which is more efficient.

Signed-off-by: fuyuanli <fuyuanli@didiglobal.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2024-03-08 10:25:47 +00:00
Jakub Kicinski
6025b9135f net: dqs: add NIC stall detector based on BQL 
softnet_data->time_squeeze is sometimes used as a proxy for
host overload or indication of scheduling problems. In practice
this statistic is very noisy and has hard to grasp units -
e.g. is 10 squeezes a second to be expected, or high?

Delaying network (NAPI) processing leads to drops on NIC queues
but also RTT bloat, impacting pacing and CA decisions.
Stalls are a little hard to detect on the Rx side, because
there may simply have not been any packets received in given
period of time. Packet timestamps help a little bit, but
again we don't know if packets are stale because we're
not keeping up or because someone (*cough* cgroups)
disabled IRQs for a long time.

We can, however, use Tx as a proxy for Rx stalls. Most drivers
use combined Rx+Tx NAPIs so if Tx gets starved so will Rx.
On the Tx side we know exactly when packets get queued,
and completed, so there is no uncertainty.

This patch adds stall checks to BQL. Why BQL? Because
it's a convenient place to add such checks, already
called by most drivers, and it has copious free space
in its structures (this patch adds no extra cache
references or dirtying to the fast path).

The algorithm takes one parameter - max delay AKA stall
threshold and increments a counter whenever NAPI got delayed
for at least that amount of time. It also records the length
of the longest stall.

To be precise every time NAPI has not polled for at least
stall thrs we check if there were any Tx packets queued
between last NAPI run and now - stall_thrs/2.

Unlike the classic Tx watchdog this mechanism does not
ignore stalls caused by Tx being disabled, or loss of link.
I don't think the check is worth the complexity, and
stall is a stall, whether due to host overload, flow
control, link down... doesn't matter much to the application.

We have been running this detector in production at Meta
for 2 years, with the threshold of 8ms. It's the lowest
value where false positives become rare. There's still
a constant stream of reported stalls (especially without
the ksoftirqd deferral patches reverted), those who like
their stall metrics to be 0 may prefer higher value.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2024-03-08 10:23:26 +00:00
Jakub Kicinski
c3874bbec9 rxrpc changes 
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Merge tag 'rxrpc-iothread-20240305' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
Here are some changes to AF_RXRPC:

 (1) Cache the transmission serial number of ACK and DATA packets in the
     rxrpc_txbuf struct and log this in the retransmit tracepoint.

 (2) Don't use atomics on rxrpc_txbuf::flags[*] and cache the intended wire
     header flags there too to avoid duplication.

 (3) Cache the wire checksum in rxrpc_txbuf to make it easier to create
     jumbo packets in future (which will require altering the wire header
     to a jumbo header and restoring it back again for retransmission).

 (4) Fix the protocol names in the wire ACK trailer struct.

 (5) Strip all the barriers and atomics out of the call timer tracking[*].

 (6) Remove atomic handling from call->tx_transmitted and
     call->acks_prev_seq[*].

 (7) Don't bother resetting the DF flag after UDP packet transmission.  To
     change it, we now call directly into UDP code, so it's quick just to
     set it every time.

 (8) Merge together the DF/non-DF branches of the DATA transmission to
     reduce duplication in the code.

 (9) Add a kvec array into rxrpc_txbuf and start moving things over to it.
     This paves the way for using page frags.

(10) Split (sub)packet preparation and timestamping out of the DATA
     transmission function.  This helps pave the way for future jumbo
     packet generation.

(11) In rxkad, don't pick values out of the wire header stored in
     rxrpc_txbuf, buf rather find them elsewhere so we can remove the wire
     header from there.

(12) Move rxrpc_send_ACK() to output.c so that it can be merged with
     rxrpc_send_ack_packet().

(13) Use rxrpc_txbuf::kvec[0] to access the wire header for the packet
     rather than directly accessing the copy in rxrpc_txbuf.  This will
     allow that to be removed to a page frag.

(14) Switch from keeping the transmission buffers in rxrpc_txbuf allocated
     in the slab to allocating them using page fragment allocators.  There
     are separate allocators for DATA packets (which persist for a while)
     and control packets (which are discarded immediately).

     We can then turn on MSG_SPLICE_PAGES when transmitting DATA and ACK
     packets.

     We can also get rid of the RCU cleanup on rxrpc_txbufs, preferring
     instead to release the page frags as soon as possible.

(15) Parse received packets before handling timeouts as the former may
     reset the latter.

(16) Make sure we don't retransmit DATA packets after all the packets have
     been ACK'd.

(17) Differentiate traces for PING ACK transmission.

(18) Switch to keeping timeouts as ktime_t rather than a number of jiffies
     as the latter is too coarse a granularity.  Only set the call timer at
     the end of the call event function from the aggregate of all the
     timeouts, thereby reducing the number of timer calls made.  In future,
     it might be possible to reduce the number of timers from one per call
     to one per I/O thread and to use a high-precision timer.

(19) Record RTT probes after successful transmission rather than recording
     it before and then cancelling it after if unsuccessful[*].  This
     allows a number of calls to get the current time to be removed.

(20) Clean up the resend algorithm as there's now no need to walk the
     transmission buffer under lock[*].  DATA packets can be retransmitted
     as soon as they're found rather than being queued up and transmitted
     when the locked is dropped.

(21) When initially parsing a received ACK packet, extract some of the
     fields from the ack info to the skbuff private data.  This makes it
     easier to do path MTU discovery in the future when the call to which a
     PING RESPONSE ACK refers has been deallocated.

[*] Possible with the move of almost all code from softirq context to the
    I/O thread.

Link: https://lore.kernel.org/r/20240301163807.385573-1-dhowells@redhat.com/ # v1
Link: https://lore.kernel.org/r/20240304084322.705539-1-dhowells@redhat.com/ # v2

* tag 'rxrpc-iothread-20240305' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (21 commits)
  rxrpc: Extract useful fields from a received ACK to skb priv data
  rxrpc: Clean up the resend algorithm
  rxrpc: Record probes after transmission and reduce number of time-gets
  rxrpc: Use ktimes for call timeout tracking and set the timer lazily
  rxrpc: Differentiate PING ACK transmission traces.
  rxrpc: Don't permit resending after all Tx packets acked
  rxrpc: Parse received packets before dealing with timeouts
  rxrpc: Do zerocopy using MSG_SPLICE_PAGES and page frags
  rxrpc: Use rxrpc_txbuf::kvec[0] instead of rxrpc_txbuf::wire
  rxrpc: Move rxrpc_send_ACK() to output.c with rxrpc_send_ack_packet()
  rxrpc: Don't pick values out of the wire header when setting up security
  rxrpc: Split up the DATA packet transmission function
  rxrpc: Add a kvec[] to the rxrpc_txbuf struct
  rxrpc: Merge together DF/non-DF branches of data Tx function
  rxrpc: Do lazy DF flag resetting
  rxrpc: Remove atomic handling on some fields only used in I/O thread
  rxrpc: Strip barriers and atomics off of timer tracking
  rxrpc: Fix the names of the fields in the ACK trailer struct
  rxrpc: Note cksum in txbuf
  rxrpc: Convert rxrpc_txbuf::flags into a mask and don't use atomics
  ...
====================

Link: https://lore.kernel.org/r/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-03-07 20:59:58 -08:00
Jakub Kicinski
e3afe5dd3a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR.

No conflicts.

Adjacent changes:

net/core/page_pool_user.c
  0b11b1c5c3 ("netdev: let netlink core handle -EMSGSIZE errors")
  429679dcf7 ("page_pool: fix netlink dump stop/resume")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2024-03-07 10:29:36 -08:00
Jason Xing
0ab544b6f0 tcp: add tracing of skbaddr in tcp_event_skb class 
Use the existing parameter and print the address of skbaddr
as other trace functions do.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-03-07 15:29:15 +01:00
Jason Xing
4e441bb8ac tcp: add tracing of skb/skaddr in tcp_event_sk_skb class 
Printing the addresses can help us identify the exact skb/sk
for those system in which it's not that easy to run BPF program.
As we can see, it already fetches those, then use it directly
and it will print like below:

...tcp_retransmit_skb: skbaddr=XXX skaddr=XXX family=AF_INET...

Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2024-03-07 15:29:15 +01:00
Luca Ceresoli
7df3eb4cdb
ASoC: trace: add event to snd_soc_dapm trace events 
Add the event value to the snd_soc_dapm_start and snd_soc_dapm_done trace
events to make them more informative.

Trace before:

           aplay-229   [000]   250.140309: snd_soc_dapm_start:   card=vscn-2046
           aplay-229   [000]   250.167531: snd_soc_dapm_done:    card=vscn-2046
           aplay-229   [000]   251.169588: snd_soc_dapm_start:   card=vscn-2046
           aplay-229   [000]   251.195245: snd_soc_dapm_done:    card=vscn-2046

Trace after:

           aplay-214   [000]   693.290612: snd_soc_dapm_start:   card=vscn-2046 event=1
           aplay-214   [000]   693.315508: snd_soc_dapm_done:    card=vscn-2046 event=1
           aplay-214   [000]   694.537349: snd_soc_dapm_start:   card=vscn-2046 event=2
           aplay-214   [000]   694.563241: snd_soc_dapm_done:    card=vscn-2046 event=2

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://msgid.link/r/20240306-improve-asoc-trace-events-v1-2-edb252bbeb10@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 2024-03-06 14:03:27 +00:00
Luca Ceresoli
6ef46a69ec
ASoC: trace: add component to set_bias_level trace events 
The snd_soc_bias_level_start and snd_soc_bias_level_done trace events
currently look like:

           aplay-229   [000]  1250.140778: snd_soc_bias_level_start: card=vscn-2046 val=1
           aplay-229   [000]  1250.140784: snd_soc_bias_level_done: card=vscn-2046 val=1
           aplay-229   [000]  1250.140786: snd_soc_bias_level_start: card=vscn-2046 val=2
           aplay-229   [000]  1250.140788: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.140871: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140951: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140956: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140959: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.140961: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167219: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:1-21    [000]  1250.167222: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167232: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.167440: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:0-11    [000]  1250.167444: snd_soc_bias_level_done: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167497: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167506: snd_soc_bias_level_done: card=vscn-2046 val=3

There are clearly multiple calls, one per component, but they cannot be
discriminated from each other.

Change the ftrace events to also print the component name, to make it clear
which part of the code is involved. This requires changing the passed value
from a struct snd_soc_card, where the DAPM context is not kwown, to a
struct snd_soc_dapm_context where it is obviously known but the a card
pointer is also available.

With this change, the resulting trace becomes:

           aplay-247   [000]  1436.357332: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357338: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357340: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=2
           aplay-247   [000]  1436.357343: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=2
    kworker/u8:4-215   [000]  1436.357437: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:5-231   [000]  1436.357518: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357523: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357526: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:5-231   [000]  1436.357528: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:4-215   [000]  1436.383217: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:4-215   [000]  1436.383221: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:4-215   [000]  1436.383231: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:5-231   [000]  1436.383468: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:5-231   [000]  1436.383472: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:4-215   [000]  1436.383503: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=3
    kworker/u8:4-215   [000]  1436.383513: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=3

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://msgid.link/r/20240306-improve-asoc-trace-events-v1-1-edb252bbeb10@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 2024-03-06 14:03:26 +00:00
David Howells
153f90a066 rxrpc: Use ktimes for call timeout tracking and set the timer lazily 
Track the call timeouts as ktimes rather than jiffies as the latter's
granularity is too high and only set the timer at the end of the event
handling function.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
 2024-03-05 23:35:25 +00:00
David Howells
12a66e77c4 rxrpc: Differentiate PING ACK transmission traces. 
There are three points that transmit PING ACKs and all of them use the same
trace string.  Change two of them to use different strings.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
 2024-03-05 23:35:25 +00:00
Richard Chang
c8b3600312 mm: add alloc_contig_migrate_range allocation statistics 
alloc_contig_migrate_range has every information to be able to understand
big contiguous allocation latency.  For example, how many pages are
migrated, how many times they were needed to unmap from page tables.

This patch adds the trace event to collect the allocation statistics.  In
the field, it was quite useful to understand CMA allocation latency.

[akpm@linux-foundation.org: a/trace_mm_alloc_config_migrate_range_info_enabled/trace_mm_alloc_contig_migrate_range_info_enabled]
Link: https://lkml.kernel.org/r/20240228051127.2859472-1-richardycc@google.com
Signed-off-by: Richard Chang <richardycc@google.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org.
Cc: Martin Liu <liumartin@google.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-03-04 17:01:27 -08:00
Carlos Galo
72ba14deb4 mm: update mark_victim tracepoints fields 
The current implementation of the mark_victim tracepoint provides only the
process ID (pid) of the victim process.  This limitation poses challenges
for userspace tools requiring real-time OOM analysis and intervention. 
Although this information is available from the kernel logs, it’s not
the appropriate format to provide OOM notifications.  In Android, BPF
programs are used with the mark_victim trace events to notify userspace of
an OOM kill.  For consistency, update the trace event to include the same
information about the OOMed victim as the kernel logs.

- UID
   In Android each installed application has a unique UID. Including
   the `uid` assists in correlating OOM events with specific apps.

- Process Name (comm)
   Enables identification of the affected process.

- OOM Score
  Will allow userspace to get additional insight of the relative kill
  priority of the OOM victim. In Android, the oom_score_adj is used to
  categorize app state (foreground, background, etc.), which aids in
  analyzing user-perceptible impacts of OOM events [1].

- Total VM, RSS Stats, and pgtables
  Amount of memory used by the victim that will, potentially, be freed up
  by killing it.

[1] 246dc8fc95:frameworks/base/services/core/java/com/android/server/am/ProcessList.java;l=188-283
Signed-off-by: Carlos Galo <carlosgalo@google.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-03-04 17:01:16 -08:00
Steven Rostedt (Google)
51270d573a tracing/net_sched: Fix tracepoints that save qdisc_dev() as a string 
I'm updating __assign_str() and will be removing the second parameter. To
make sure that it does not break anything, I make sure that it matches the
__string() field, as that is where the string is actually going to be
saved in. To make sure there's nothing that breaks, I added a WARN_ON() to
make sure that what was used in __string() is the same that is used in
__assign_str().

In doing this change, an error was triggered as __assign_str() now expects
the string passed in to be a char * value. I instead had the following
warning:

include/trace/events/qdisc.h: In function ‘trace_event_raw_event_qdisc_reset’:
include/trace/events/qdisc.h:91:35: error: passing argument 1 of 'strcmp' from incompatible pointer type [-Werror=incompatible-pointer-types]
   91 |                 __assign_str(dev, qdisc_dev(q));

That's because the qdisc_enqueue() and qdisc_reset() pass in qdisc_dev(q)
to __assign_str() and to __string(). But that function returns a pointer
to struct net_device and not a string.

It appears that these events are just saving the pointer as a string and
then reading it as a string as well.

Use qdisc_dev(q)->name to save the device instead.

Fixes: a34dac0b90 ("net_sched: add tracepoints for qdisc_reset() and qdisc_destroy()")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2024-03-04 09:35:54 +00:00
Chuck Lever
a1f5788a0c svcrdma: Move write_info for Reply chunks into struct svc_rdma_send_ctxt 
Since the RPC transaction's svc_rdma_send_ctxt will stay around for
the duration of the RDMA Write operation, the write_info structure
for the Reply chunk can reside in the request's svc_rdma_send_ctxt
instead of being allocated separately.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-03-01 09:12:28 -05:00
Chuck Lever
9a026aec88 NFSD: Add callback operation lifetime trace points 
Help observe the flow of callback operations.

bc_shutdown() records exactly when the backchannel RPC client is
destroyed and cl_cb_client is replaced with NULL.

Examples include:

         nfsd-955   [004]   650.013997: nfsd_cb_queue:        addr=192.168.122.6:0 client 65b3c5b8:f541f749 cb=0xffff8881134b02f8 (first try)
kworker/u21:4-497   [004]   650.014050: nfsd_cb_seq_status:   task:00000001@00000001 sessionid=65b3c5b8:f541f749:00000001:00000000 tk_status=-107 seq_status=1
kworker/u21:4-497   [004]   650.014051: nfsd_cb_restart:      addr=192.168.122.6:0 client 65b3c5b8:f541f749 cb=0xffff88810e39f400 (first try)
kworker/u21:4-497   [004]   650.014066: nfsd_cb_queue:        addr=192.168.122.6:0 client 65b3c5b8:f541f749 cb=0xffff88810e39f400 (need restart)


kworker/u16:0-10    [006]   650.065750: nfsd_cb_start:        addr=192.168.122.6:0 client 65b3c5b8:f541f749 state=UNKNOWN
kworker/u16:0-10    [006]   650.065752: nfsd_cb_bc_update:    addr=192.168.122.6:0 client 65b3c5b8:f541f749 cb=0xffff8881134b02f8 (first try)
kworker/u16:0-10    [006]   650.065754: nfsd_cb_bc_shutdown:  addr=192.168.122.6:0 client 65b3c5b8:f541f749 cb=0xffff8881134b02f8 (first try)
kworker/u16:0-10    [006]   650.065810: nfsd_cb_new_state:    addr=192.168.122.6:0 client 65b3c5b8:f541f749 state=DOWN

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-03-01 09:12:15 -05:00
David Howells
17469ae058 rxrpc: Fix the names of the fields in the ACK trailer struct 
From AFS-3.3 a trailer containing extra info was added to the ACK packet
format - but AF_RXRPC has the names of some of the fields mixed up compared
to other AFS implementations.

Rename the struct and the fields to make them match.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
 2024-02-29 15:49:57 +00:00
David Howells
12bdff73a1 rxrpc: Convert rxrpc_txbuf::flags into a mask and don't use atomics 
Convert the transmission buffer flags into a mask and use | and & rather
than bitops functions (atomic ops are not required as only the I/O thread
can manipulate them once submitted for transmission).

The bottom byte can then correspond directly to the Rx protocol header
flags.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
 2024-02-29 15:49:56 +00:00
David Howells
ba132d841d rxrpc: Record the Tx serial in the rxrpc_txbuf and retransmit trace 
Each Rx protocol packet contains a per-connection monotonically increasing
serial number used to correlate outgoing messages with their replies -
something that can be used for RTT calculation.

Note this value in the rxrpc_txbuf struct in addition to the wire header
and then log it in the rxrpc_retransmit trace for reference.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
 2024-02-29 15:49:56 +00:00
Olga Kornievskaia
6e21eda471 SUNRPC: add xrpt id to rpc_stats_latency tracepoint 
In order to get the latency per xprt under the same clientid this patch
adds xprt_id to the tracepoint output.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Tested-by: Chen Hanxiao <chenhx.fnst@fujitsu.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2024-02-28 16:18:18 -05:00
Vilas Bhat
015abee404 PM: runtime: add tracepoint for runtime_status changes 
Existing runtime PM ftrace events (`rpm_suspend`, `rpm_resume`,
`rpm_return_int`) offer limited visibility into the exact timing of device
runtime power state transitions, particularly when asynchronous operations
are involved. When the `rpm_suspend` or `rpm_resume` functions are invoked
with the `RPM_ASYNC` flag, a return value of 0 i.e., success merely
indicates that the device power state request has been queued, not that
the device has yet transitioned.

A new ftrace event, `rpm_status`, is introduced. This event directly logs
the `power.runtime_status` value of a device whenever it changes providing
granular tracking of runtime power state transitions regardless of
synchronous or asynchronous `rpm_suspend` / `rpm_resume` usage.

Signed-off-by: Vilas Bhat <vilasbhat@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2024-02-22 20:27:39 +01:00
Baolin Wang
ab755bf424 mm: compaction: update the cc->nr_migratepages when allocating or freeing the freepages 
Currently we will use 'cc->nr_freepages >= cc->nr_migratepages' comparison
to ensure that enough freepages are isolated in isolate_freepages(),
however it just decreases the cc->nr_freepages without updating
cc->nr_migratepages in compaction_alloc(), which will waste more CPU
cycles and cause too many freepages to be isolated.

So we should also update the cc->nr_migratepages when allocating or
freeing the freepages to avoid isolating excess freepages.  And I can see
fewer free pages are scanned and isolated when running thpcompact on my
Arm64 server:

                                       k6.7         k6.7_patched
Ops Compaction pages isolated      120692036.00   118160797.00
Ops Compaction migrate scanned     131210329.00   154093268.00
Ops Compaction free scanned       1090587971.00  1080632536.00
Ops Compact scan efficiency               12.03          14.26

Moreover, I did not see an obvious latency improvements, this is likely
because isolating freepages is not the bottleneck in the thpcompact test
case.

                              k6.7                  k6.7_patched
Amean     fault-both-1      1089.76 (   0.00%)     1080.16 *   0.88%*
Amean     fault-both-3      1616.48 (   0.00%)     1636.65 *  -1.25%*
Amean     fault-both-5      2266.66 (   0.00%)     2219.20 *   2.09%*
Amean     fault-both-7      2909.84 (   0.00%)     2801.90 *   3.71%*
Amean     fault-both-12     4861.26 (   0.00%)     4733.25 *   2.63%*
Amean     fault-both-18     7351.11 (   0.00%)     6950.51 *   5.45%*
Amean     fault-both-24     9059.30 (   0.00%)     9159.99 *  -1.11%*
Amean     fault-both-30    10685.68 (   0.00%)    11399.02 *  -6.68%*

Link: https://lkml.kernel.org/r/6440493f18da82298152b6305d6b41c2962a3ce6.1708409245.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2024-02-22 10:24:50 -08:00
Anna-Maria Behnsen
36e40df35d timer_migration: Add tracepoints 
The timer pull logic needs proper debugging aids. Add tracepoints so the
hierarchical idle machinery can be diagnosed.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240222103403.31923-1-anna-maria@linutronix.de
 2024-02-22 17:52:32 +01:00
Linus Torvalds
1f719a2f3f Including fixes from WiFi and netfilter. 
Current release - regressions:
 
   - nic: intel: fix old compiler regressions
 
   - netfilter: ipset: missing gc cancellations fixed
 
 Current release - new code bugs:
 
   - netfilter: ctnetlink: fix filtering for zone 0
 
 Previous releases - regressions:
 
   - core: fix from address in memcpy_to_iter_csum()
 
   - netfilter: nfnetlink_queue: un-break NF_REPEAT
 
   - af_unix: fix memory leak for dead unix_(sk)->oob_skb in GC.
 
   - devlink: avoid potential loop in devlink_rel_nested_in_notify_work()
 
   - iwlwifi:
     - mvm: fix a battery life regression
     - fix double-free bug
 
   - mac80211: fix waiting for beacons logic
 
   - nic: nfp: flower: prevent re-adding mac index for bonded port
 
 Previous releases - always broken:
 
   - rxrpc: fix generation of serial numbers to skip zero
 
   - tipc: check the bearer type before calling tipc_udp_nl_bearer_add()
 
   - tunnels: fix out of bounds access when building IPv6 PMTU error
 
   - nic: hv_netvsc: register VF in netvsc_probe if NET_DEVICE_REGISTER missed
 
   - nic: atlantic: fix DMA mapping for PTP hwts ring
 
 Misc:
 
   - selftests: more fixes to deal with very slow hosts
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from WiFi and netfilter.

  Current release - regressions:

   - nic: intel: fix old compiler regressions

   - netfilter: ipset: missing gc cancellations fixed

  Current release - new code bugs:

   - netfilter: ctnetlink: fix filtering for zone 0

  Previous releases - regressions:

   - core: fix from address in memcpy_to_iter_csum()

   - netfilter: nfnetlink_queue: un-break NF_REPEAT

   - af_unix: fix memory leak for dead unix_(sk)->oob_skb in GC.

   - devlink: avoid potential loop in devlink_rel_nested_in_notify_work()

   - iwlwifi:
       - mvm: fix a battery life regression
       - fix double-free bug

   - mac80211: fix waiting for beacons logic

   - nic: nfp: flower: prevent re-adding mac index for bonded port

  Previous releases - always broken:

   - rxrpc: fix generation of serial numbers to skip zero

   - tipc: check the bearer type before calling tipc_udp_nl_bearer_add()

   - tunnels: fix out of bounds access when building IPv6 PMTU error

   - nic: hv_netvsc: register VF in netvsc_probe if NET_DEVICE_REGISTER
     missed

   - nic: atlantic: fix DMA mapping for PTP hwts ring

  Misc:

   - selftests: more fixes to deal with very slow hosts"

* tag 'net-6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (80 commits)
  netfilter: nft_set_pipapo: remove scratch_aligned pointer
  netfilter: nft_set_pipapo: add helper to release pcpu scratch area
  netfilter: nft_set_pipapo: store index in scratch maps
  netfilter: nft_set_rbtree: skip end interval element from gc
  netfilter: nfnetlink_queue: un-break NF_REPEAT
  netfilter: nf_tables: use timestamp to check for set element timeout
  netfilter: nft_ct: reject direction for ct id
  netfilter: ctnetlink: fix filtering for zone 0
  s390/qeth: Fix potential loss of L3-IP@ in case of network issues
  netfilter: ipset: Missing gc cancellations fixed
  octeontx2-af: Initialize maps.
  net: ethernet: ti: cpsw: enable mac_managed_pm to fix mdio
  net: ethernet: ti: cpsw_new: enable mac_managed_pm to fix mdio
  netfilter: nft_set_pipapo: remove static in nft_pipapo_get()
  netfilter: nft_compat: restrict match/target protocol to u16
  netfilter: nft_compat: reject unused compat flag
  netfilter: nft_compat: narrow down revision to unsigned 8-bits
  net: intel: fix old compiler regressions
  MAINTAINERS: Maintainer change for rds
  selftests: cmsg_ipv6: repeat the exact packet
  ...
 2024-02-08 15:09:29 -08:00
Jens Axboe
4c98b89175 io_uring: remove 'loops' argument from trace_io_uring_task_work_run() 
We no longer loop in task_work handling, hence delete the argument from
the tracepoint as it's always 1 and hence not very informative.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2024-02-08 13:27:06 -07:00
Jens Axboe
4bcb982cce io_uring: expand main struct io_kiocb flags to 64-bits 
We're out of space here, and none of the flags are easily reclaimable.
Bump it to 64-bits and re-arrange the struct a bit to avoid gaps.

Add a specific bitwise type for the request flags, io_request_flags_t.
This will help catch violations of casting this value to a smaller type
on 32-bit archs, like unsigned int.

This creates a hole in the io_kiocb, so move nr_tw up and rsrc_node down
to retain needing only cacheline 0 and 1 for non-polled opcodes.

No functional changes intended in this patch.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2024-02-08 13:27:03 -07:00
David Howells
41b7fa157e rxrpc: Fix counting of new acks and nacks 
Fix the counting of new acks and nacks when parsing a packet - something
that is used in congestion control.

As the code stands, it merely notes if there are any nacks whereas what we
really should do is compare the previous SACK table to the new one,
assuming we get two successive ACK packets with nacks in them.  However, we
really don't want to do that if we can avoid it as the tables might not
correspond directly as one may be shifted from the other - something that
will only get harder to deal with once extended ACK tables come into full
use (with a capacity of up to 8192).

Instead, count the number of nacks shifted out of the old SACK, the number
of nacks retained in the portion still active and the number of new acks
and nacks in the new table then calculate what we need.

Note this ends up a bit of an estimate as the Rx protocol allows acks to be
withdrawn by the receiver and packets requested to be retransmitted.

Fixes: d57a3a1516 ("rxrpc: Save last ACK's SACK table rather than marking txbufs")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
 2024-02-05 12:34:07 +00:00
Jeff Layton
c69ff40719
filelock: split leases out of struct file_lock 
Add a new struct file_lease and move the lease-specific fields from
struct file_lock to it. Convert the appropriate API calls to take
struct file_lease instead, and convert the callers to use them.

There is zero overlap between the lock manager operations for file
locks and the ones for file leases, so split the lease-related
operations off into a new lease_manager_operations struct.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-47-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2024-02-05 13:11:44 +01:00
Jeff Layton
82a8cb96b2
afs: adapt to breakup of struct file_lock 
Most of the existing APIs have remained the same, but subsystems that
access file_lock fields directly need to reach into struct
file_lock_core now.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-35-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2024-02-05 13:11:42 +01:00
Jeff Layton
b6aaba5b76
filelock: convert fl_blocker to file_lock_core 
Both locks and leases deal with fl_blocker. Switch the fl_blocker
pointer in struct file_lock_core to point to the file_lock_core of the
blocker instead of a file_lock structure.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-26-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2024-02-05 13:11:40 +01:00
Jeff Layton
4ca52f5398
filelock: have fs/locks.c deal with file_lock_core directly 
Convert fs/locks.c to access fl_core fields direcly rather than using
the backward-compatibility macros. Most of this was done with
coccinelle, with a few by-hand fixups.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-18-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2024-02-05 13:11:38 +01:00
Linus Torvalds
3f24fcdacd Miscellaneous bug fixes and cleanups in ext4's multi-block allocator 
and extent handling code.
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Merge tag 'for-linus-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Miscellaneous bug fixes and cleanups in ext4's multi-block allocator
  and extent handling code"

* tag 'for-linus-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (23 commits)
  ext4: make ext4_set_iomap() recognize IOMAP_DELALLOC map type
  ext4: make ext4_map_blocks() distinguish delalloc only extent
  ext4: add a hole extent entry in cache after punch
  ext4: correct the hole length returned by ext4_map_blocks()
  ext4: convert to exclusive lock while inserting delalloc extents
  ext4: refactor ext4_da_map_blocks()
  ext4: remove 'needed' in trace_ext4_discard_preallocations
  ext4: remove unnecessary parameter "needed" in ext4_discard_preallocations
  ext4: remove unused return value of ext4_mb_release_group_pa
  ext4: remove unused return value of ext4_mb_release_inode_pa
  ext4: remove unused return value of ext4_mb_release
  ext4: remove unused ext4_allocation_context::ac_groups_considered
  ext4: remove unneeded return value of ext4_mb_release_context
  ext4: remove unused parameter ngroup in ext4_mb_choose_next_group_*()
  ext4: remove unused return value of __mb_check_buddy
  ext4: mark the group block bitmap as corrupted before reporting an error
  ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()
  ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()
  ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt
  ext4: avoid bb_free and bb_fragments inconsistency in mb_free_blocks()
  ...
 2024-02-04 07:33:01 +00:00
Jeff Layton
587a67b683
filelock: rename some fields in tracepoints 
In later patches we're going to introduce some macros with names that
clash with fields here. To prevent problems building, just rename the
fields in the trace entry structures.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-2-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2024-02-02 12:09:04 +01:00
Ashok Raj
e272d1e118
platform/x86/intel/ifs: Add current batch number to trace output 
Add the current batch number in the trace output. When there are
failures, it's important to know which test content resulted in failure.

#           TASK-PID     CPU#  |||||  TIMESTAMP  FUNCTION
#              | |         |   |||||     |         |
     migration/0-18      [000] d..1. 527287.084668: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80
   migration/128-785     [128] d..1. 527287.084669: ifs_status: batch: 02, start: 0000, stop: 007f, status: 0000000000007f80

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240125082254.424859-4-ashok.raj@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
 2024-01-31 11:57:27 +02:00
Ashok Raj
def1ed0db2
platform/x86/intel/ifs: Trace on all HT threads when executing a test 
Enable the trace function on all HT threads.  Currently, the trace is
called from some arbitrary CPU where the test was invoked.

This change gives visibility to the exact errors as seen by each
participating HT threads, and not just what was seen from the primary
thread.

Sample output below.

#           TASK-PID     CPU#  |||||  TIMESTAMP  FUNCTION
#              | |         |   |||||     |         |
     migration/0-18      [000] d..1. 527287.084668: start: 0000, stop: 007f, status: 0000000000007f80
   migration/128-785     [128] d..1. 527287.084669: start: 0000, stop: 007f, status: 0000000000007f80

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20240125082254.424859-3-ashok.raj@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
 2024-01-31 11:57:23 +02:00
David Howells
17ba6f0bd1 afs: Fix error handling with lookup via FS.InlineBulkStatus 
When afs does a lookup, it tries to use FS.InlineBulkStatus to preemptively
look up a bunch of files in the parent directory and cache this locally, on
the basis that we might want to look at them too (for example if someone
does an ls on a directory, they may want want to then stat every file
listed).

FS.InlineBulkStatus can be considered a compound op with the normal abort
code applying to the compound as a whole.  Each status fetch within the
compound is then given its own individual abort code - but assuming no
error that prevents the bulk fetch from returning the compound result will
be 0, even if all the constituent status fetches failed.

At the conclusion of afs_do_lookup(), we should use the abort code from the
appropriate status to determine the error to return, if any - but instead
it is assumed that we were successful if the op as a whole succeeded and we
return an incompletely initialised inode, resulting in ENOENT, no matter
the actual reason.  In the particular instance reported, a vnode with no
permission granted to be accessed is being given a UAEACCES abort code
which should be reported as EACCES, but is instead being reported as
ENOENT.

Fix this by abandoning the inode (which will be cleaned up with the op) if
file[1] has an abort code indicated and turn that abort code into an error
instead.

Whilst we're at it, add a tracepoint so that the abort codes of the
individual subrequests of FS.InlineBulkStatus can be logged.  At the moment
only the container abort code can be 0.

Fixes: e49c7b2f6d ("afs: Build an abstraction around an "operation" concept")
Reported-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-22 22:30:14 +00:00
Linus Torvalds
16df6e07d6 vfs-6.8.netfs 
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Merge tag 'vfs-6.8.netfs' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs

Pull netfs updates from Christian Brauner:
 "This extends the netfs helper library that network filesystems can use
  to replace their own implementations. Both afs and 9p are ported. cifs
  is ready as well but the patches are way bigger and will be routed
  separately once this is merged. That will remove lots of code as well.

  The overal goal is to get high-level I/O and knowledge of the page
  cache and ouf of the filesystem drivers. This includes knowledge about
  the existence of pages and folios

  The pull request converts afs and 9p. This removes about 800 lines of
  code from afs and 300 from 9p. For 9p it is now possible to do writes
  in larger than a page chunks. Additionally, multipage folio support
  can be turned on for 9p. Separate patches exist for cifs removing
  another 2000+ lines. I've included detailed information in the
  individual pulls I took.

  Summary:

   - Add NFS-style (and Ceph-style) locking around DIO vs buffered I/O
     calls to prevent these from happening at the same time.

   - Support for direct and unbuffered I/O.

   - Support for write-through caching in the page cache.

   - O_*SYNC and RWF_*SYNC writes use write-through rather than writing
     to the page cache and then flushing afterwards.

   - Support for write-streaming.

   - Support for write grouping.

   - Skip reads for which the server could only return zeros or EOF.

   - The fscache module is now part of the netfs library and the
     corresponding maintainer entry is updated.

   - Some helpers from the fscache subsystem are renamed to mark them as
     belonging to the netfs library.

   - Follow-up fixes for the netfs library.

   - Follow-up fixes for the 9p conversion"

* tag 'vfs-6.8.netfs' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (50 commits)
  netfs: Fix wrong #ifdef hiding wait
  cachefiles: Fix signed/unsigned mixup
  netfs: Fix the loop that unmarks folios after writing to the cache
  netfs: Fix interaction between write-streaming and cachefiles culling
  netfs: Count DIO writes
  netfs: Mark netfs_unbuffered_write_iter_locked() static
  netfs: Fix proc/fs/fscache symlink to point to "netfs" not "../netfs"
  netfs: Rearrange netfs_io_subrequest to put request pointer first
  9p: Use length of data written to the server in preference to error
  9p: Do a couple of cleanups
  9p: Fix initialisation of netfs_inode for 9p
  cachefiles: Fix __cachefiles_prepare_write()
  9p: Use netfslib read/write_iter
  afs: Use the netfs write helpers
  netfs: Export the netfs_sreq tracepoint
  netfs: Optimise away reads above the point at which there can be no data
  netfs: Implement a write-through caching option
  netfs: Provide a launder_folio implementation
  netfs: Provide a writepages implementation
  netfs, cachefiles: Pass upper bound length to allow expansion
  ...
 2024-01-19 09:10:23 -08:00
Kemeng Shi
f0e54b6087 ext4: remove 'needed' in trace_ext4_discard_preallocations 
As 'needed' to trace_ext4_discard_preallocations is always 0 which
is meaningless. Just remove it.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240105092102.496631-10-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
 2024-01-18 10:52:45 -05:00
Linus Torvalds
09d1c6a80f Generic: 
- Use memdup_array_user() to harden against overflow.
 
 - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
 
 - Clean up Kconfigs that all KVM architectures were selecting
 
 - New functionality around "guest_memfd", a new userspace API that
   creates an anonymous file and returns a file descriptor that refers
   to it.  guest_memfd files are bound to their owning virtual machine,
   cannot be mapped, read, or written by userspace, and cannot be resized.
   guest_memfd files do however support PUNCH_HOLE, which can be used to
   switch a memory area between guest_memfd and regular anonymous memory.
 
 - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
   per-page attributes for a given page of guest memory; right now the
   only attribute is whether the guest expects to access memory via
   guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
   TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees
   confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM).
 
 x86:
 
 - Support for "software-protected VMs" that can use the new guest_memfd
   and page attributes infrastructure.  This is mostly useful for testing,
   since there is no pKVM-like infrastructure to provide a meaningfully
   reduced TCB.
 
 - Fix a relatively benign off-by-one error when splitting huge pages during
   CLEAR_DIRTY_LOG.
 
 - Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf
   TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE.
 
 - Use more generic lockdep assertions in paths that don't actually care
   about whether the caller is a reader or a writer.
 
 - let Xen guests opt out of having PV clock reported as "based on a stable TSC",
   because some of them don't expect the "TSC stable" bit (added to the pvclock
   ABI by KVM, but never set by Xen) to be set.
 
 - Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL.
 
 - Advertise flush-by-ASID support for nSVM unconditionally, as KVM always
   flushes on nested transitions, i.e. always satisfies flush requests.  This
   allows running bleeding edge versions of VMware Workstation on top of KVM.
 
 - Sanity check that the CPU supports flush-by-ASID when enabling SEV support.
 
 - On AMD machines with vNMI, always rely on hardware instead of intercepting
   IRET in some cases to detect unmasking of NMIs
 
 - Support for virtualizing Linear Address Masking (LAM)
 
 - Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state
   prior to refreshing the vPMU model.
 
 - Fix a double-overflow PMU bug by tracking emulated counter events using a
   dedicated field instead of snapshotting the "previous" counter.  If the
   hardware PMC count triggers overflow that is recognized in the same VM-Exit
   that KVM manually bumps an event count, KVM would pend PMIs for both the
   hardware-triggered overflow and for KVM-triggered overflow.
 
 - Turn off KVM_WERROR by default for all configs so that it's not
   inadvertantly enabled by non-KVM developers, which can be problematic for
   subsystems that require no regressions for W=1 builds.
 
 - Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL
   "features".
 
 - Don't force a masterclock update when a vCPU synchronizes to the current TSC
   generation, as updating the masterclock can cause kvmclock's time to "jump"
   unexpectedly, e.g. when userspace hotplugs a pre-created vCPU.
 
 - Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths,
   partly as a super minor optimization, but mostly to make KVM play nice with
   position independent executable builds.
 
 - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
   CONFIG_HYPERV as a minor optimization, and to self-document the code.
 
 - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation"
   at build time.
 
 ARM64:
 
 - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
   base granule sizes. Branch shared with the arm64 tree.
 
 - Large Fine-Grained Trap rework, bringing some sanity to the
   feature, although there is more to come. This comes with
   a prefix branch shared with the arm64 tree.
 
 - Some additional Nested Virtualization groundwork, mostly
   introducing the NV2 VNCR support and retargetting the NV
   support to that version of the architecture.
 
 - A small set of vgic fixes and associated cleanups.
 
 Loongarch:
 
 - Optimization for memslot hugepage checking
 
 - Cleanup and fix some HW/SW timer issues
 
 - Add LSX/LASX (128bit/256bit SIMD) support
 
 RISC-V:
 
 - KVM_GET_REG_LIST improvement for vector registers
 
 - Generate ISA extension reg_list using macros in get-reg-list selftest
 
 - Support for reporting steal time along with selftest
 
 s390:
 
 - Bugfixes
 
 Selftests:
 
 - Fix an annoying goof where the NX hugepage test prints out garbage
   instead of the magic token needed to run the test.
 
 - Fix build errors when a header is delete/moved due to a missing flag
   in the Makefile.
 
 - Detect if KVM bugged/killed a selftest's VM and print out a helpful
   message instead of complaining that a random ioctl() failed.
 
 - Annotate the guest printf/assert helpers with __printf(), and fix the
   various bugs that were lurking due to lack of said annotation.
 
 There are two non-KVM patches buried in the middle of guest_memfd support:
 
   fs: Rename anon_inode_getfile_secure() and anon_inode_getfd_secure()
   mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
 
 The first is small and mostly suggested-by Christian Brauner; the second
 a bit less so but it was written by an mm person (Vlastimil Babka).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "Generic:

   - Use memdup_array_user() to harden against overflow.

   - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all
     architectures.

   - Clean up Kconfigs that all KVM architectures were selecting

   - New functionality around "guest_memfd", a new userspace API that
     creates an anonymous file and returns a file descriptor that refers
     to it. guest_memfd files are bound to their owning virtual machine,
     cannot be mapped, read, or written by userspace, and cannot be
     resized. guest_memfd files do however support PUNCH_HOLE, which can
     be used to switch a memory area between guest_memfd and regular
     anonymous memory.

   - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
     per-page attributes for a given page of guest memory; right now the
     only attribute is whether the guest expects to access memory via
     guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
     TDX or ARM64 pKVM is checked by firmware or hypervisor that
     guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in
     the case of pKVM).

  x86:

   - Support for "software-protected VMs" that can use the new
     guest_memfd and page attributes infrastructure. This is mostly
     useful for testing, since there is no pKVM-like infrastructure to
     provide a meaningfully reduced TCB.

   - Fix a relatively benign off-by-one error when splitting huge pages
     during CLEAR_DIRTY_LOG.

   - Fix a bug where KVM could incorrectly test-and-clear dirty bits in
     non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with
     a non-huge SPTE.

   - Use more generic lockdep assertions in paths that don't actually
     care about whether the caller is a reader or a writer.

   - let Xen guests opt out of having PV clock reported as "based on a
     stable TSC", because some of them don't expect the "TSC stable" bit
     (added to the pvclock ABI by KVM, but never set by Xen) to be set.

   - Revert a bogus, made-up nested SVM consistency check for
     TLB_CONTROL.

   - Advertise flush-by-ASID support for nSVM unconditionally, as KVM
     always flushes on nested transitions, i.e. always satisfies flush
     requests. This allows running bleeding edge versions of VMware
     Workstation on top of KVM.

   - Sanity check that the CPU supports flush-by-ASID when enabling SEV
     support.

   - On AMD machines with vNMI, always rely on hardware instead of
     intercepting IRET in some cases to detect unmasking of NMIs

   - Support for virtualizing Linear Address Masking (LAM)

   - Fix a variety of vPMU bugs where KVM fail to stop/reset counters
     and other state prior to refreshing the vPMU model.

   - Fix a double-overflow PMU bug by tracking emulated counter events
     using a dedicated field instead of snapshotting the "previous"
     counter. If the hardware PMC count triggers overflow that is
     recognized in the same VM-Exit that KVM manually bumps an event
     count, KVM would pend PMIs for both the hardware-triggered overflow
     and for KVM-triggered overflow.

   - Turn off KVM_WERROR by default for all configs so that it's not
     inadvertantly enabled by non-KVM developers, which can be
     problematic for subsystems that require no regressions for W=1
     builds.

   - Advertise all of the host-supported CPUID bits that enumerate
     IA32_SPEC_CTRL "features".

   - Don't force a masterclock update when a vCPU synchronizes to the
     current TSC generation, as updating the masterclock can cause
     kvmclock's time to "jump" unexpectedly, e.g. when userspace
     hotplugs a pre-created vCPU.

   - Use RIP-relative address to read kvm_rebooting in the VM-Enter
     fault paths, partly as a super minor optimization, but mostly to
     make KVM play nice with position independent executable builds.

   - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
     CONFIG_HYPERV as a minor optimization, and to self-document the
     code.

   - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV
     "emulation" at build time.

  ARM64:

   - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base
     granule sizes. Branch shared with the arm64 tree.

   - Large Fine-Grained Trap rework, bringing some sanity to the
     feature, although there is more to come. This comes with a prefix
     branch shared with the arm64 tree.

   - Some additional Nested Virtualization groundwork, mostly
     introducing the NV2 VNCR support and retargetting the NV support to
     that version of the architecture.

   - A small set of vgic fixes and associated cleanups.

  Loongarch:

   - Optimization for memslot hugepage checking

   - Cleanup and fix some HW/SW timer issues

   - Add LSX/LASX (128bit/256bit SIMD) support

  RISC-V:

   - KVM_GET_REG_LIST improvement for vector registers

   - Generate ISA extension reg_list using macros in get-reg-list
     selftest

   - Support for reporting steal time along with selftest

  s390:

   - Bugfixes

  Selftests:

   - Fix an annoying goof where the NX hugepage test prints out garbage
     instead of the magic token needed to run the test.

   - Fix build errors when a header is delete/moved due to a missing
     flag in the Makefile.

   - Detect if KVM bugged/killed a selftest's VM and print out a helpful
     message instead of complaining that a random ioctl() failed.

   - Annotate the guest printf/assert helpers with __printf(), and fix
     the various bugs that were lurking due to lack of said annotation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits)
  x86/kvm: Do not try to disable kvmclock if it was not enabled
  KVM: x86: add missing "depends on KVM"
  KVM: fix direction of dependency on MMU notifiers
  KVM: introduce CONFIG_KVM_COMMON
  KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd
  KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
  RISC-V: KVM: selftests: Add get-reg-list test for STA registers
  RISC-V: KVM: selftests: Add steal_time test support
  RISC-V: KVM: selftests: Add guest_sbi_probe_extension
  RISC-V: KVM: selftests: Move sbi_ecall to processor.c
  RISC-V: KVM: Implement SBI STA extension
  RISC-V: KVM: Add support for SBI STA registers
  RISC-V: KVM: Add support for SBI extension registers
  RISC-V: KVM: Add SBI STA info to vcpu_arch
  RISC-V: KVM: Add steal-update vcpu request
  RISC-V: KVM: Add SBI STA extension skeleton
  RISC-V: paravirt: Implement steal-time support
  RISC-V: Add SBI STA extension definitions
  RISC-V: paravirt: Add skeleton for pv-time support
  RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr()
  ...
 2024-01-17 13:03:37 -08:00
Linus Torvalds
70d201a408 f2fs update for 6.8-rc1 
In this series, we've some progress to support Zoned block device regarding to
 the power-cut recovery flow and enabling checkpoint=disable feature which is
 essential for Android OTA. Other than that, some patches touched sysfs entries
 and tracepoints which are minor, while several bug fixes on error handlers and
 compression flows are good to improve the overall stability.
 
 Enhancement:
  - enable checkpoint=disable for zoned block device
  - sysfs entries such as discard status, discard_io_aware, dir_level
  - tracepoints such as f2fs_vm_page_mkwrite(), f2fs_rename(), f2fs_new_inode()
  - use shared inode lock during f2fs_fiemap() and f2fs_seek_block()
 
 Bug fix:
  - address some power-cut recovery issues on zoned block device
  - handle errors and logics on do_garbage_collect(), f2fs_reserve_new_block(),
    f2fs_move_file_range(), f2fs_recover_xattr_data()
  - don't set FI_PREALLOCATED_ALL for partial write
  - fix to update iostat correctly in f2fs_filemap_fault()
  - fix to wait on block writeback for post_read case
  - fix to tag gcing flag on page during block migration
  - restrict max filesize for 16K f2fs
  - fix to avoid dirent corruption
  - explicitly null-terminate the xattr list
 
 There are also several clean-up patches to remove dead codes and better
 readability.
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Merge tag 'f2fs-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs update from Jaegeuk Kim:
 "In this series, we've some progress to support Zoned block device
  regarding to the power-cut recovery flow and enabling
  checkpoint=disable feature which is essential for Android OTA.

  Other than that, some patches touched sysfs entries and tracepoints
  which are minor, while several bug fixes on error handlers and
  compression flows are good to improve the overall stability.

  Enhancements:
   - enable checkpoint=disable for zoned block device
   - sysfs entries such as discard status, discard_io_aware, dir_level
   - tracepoints such as f2fs_vm_page_mkwrite(), f2fs_rename(),
     f2fs_new_inode()
   - use shared inode lock during f2fs_fiemap() and f2fs_seek_block()

  Bug fixes:
   - address some power-cut recovery issues on zoned block device
   - handle errors and logics on do_garbage_collect(),
     f2fs_reserve_new_block(), f2fs_move_file_range(),
     f2fs_recover_xattr_data()
   - don't set FI_PREALLOCATED_ALL for partial write
   - fix to update iostat correctly in f2fs_filemap_fault()
   - fix to wait on block writeback for post_read case
   - fix to tag gcing flag on page during block migration
   - restrict max filesize for 16K f2fs
   - fix to avoid dirent corruption
   - explicitly null-terminate the xattr list

  There are also several clean-up patches to remove dead codes and
  better readability"

* tag 'f2fs-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits)
  f2fs: show more discard status by sysfs
  f2fs: Add error handling for negative returns from do_garbage_collect
  f2fs: Constrain the modification range of dir_level in the sysfs
  f2fs: Use wait_event_freezable_timeout() for freezable kthread
  f2fs: fix to check return value of f2fs_recover_xattr_data
  f2fs: don't set FI_PREALLOCATED_ALL for partial write
  f2fs: fix to update iostat correctly in f2fs_filemap_fault()
  f2fs: fix to check compress file in f2fs_move_file_range()
  f2fs: fix to wait on block writeback for post_read case
  f2fs: fix to tag gcing flag on page during block migration
  f2fs: add tracepoint for f2fs_vm_page_mkwrite()
  f2fs: introduce f2fs_invalidate_internal_cache() for cleanup
  f2fs: update blkaddr in __set_data_blkaddr() for cleanup
  f2fs: introduce get_dnode_addr() to clean up codes
  f2fs: delete obsolete FI_DROP_CACHE
  f2fs: delete obsolete FI_FIRST_BLOCK_WRITTEN
  f2fs: Restrict max filesize for 16K f2fs
  f2fs: let's finish or reset zones all the time
  f2fs: check write pointers when checkpoint=disable
  f2fs: fix write pointers on zoned device after roll forward
  ...
 2024-01-11 20:39:15 -08:00
Linus Torvalds
49f4810356 NFSD 6.8 Release Notes 
The bulk of the patches for this release are clean-ups and minor bug
 fixes.
 
 There is one significant revert to mention: support for RDMA Read
 operations in the server's RPC-over-RDMA transport implementation
 has been fixed so it waits for Read completion in a way that avoids
 tying up an nfsd thread. This prevents a possible DoS vector if an
 RPC-over-RDMA client should become unresponsive during RDMA Read
 operations.
 
 As always I am grateful to NFSD contributors, reviewers, and
 testers.
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Merge tag 'nfsd-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "The bulk of the patches for this release are clean-ups and minor bug
  fixes.

  There is one significant revert to mention: support for RDMA Read
  operations in the server's RPC-over-RDMA transport implementation has
  been fixed so it waits for Read completion in a way that avoids tying
  up an nfsd thread. This prevents a possible DoS vector if an
  RPC-over-RDMA client should become unresponsive during RDMA Read
  operations.

  As always I am grateful to NFSD contributors, reviewers, and testers"

* tag 'nfsd-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (56 commits)
  nfsd: rename nfsd_last_thread() to nfsd_destroy_serv()
  SUNRPC: discard sv_refcnt, and svc_get/svc_put
  svc: don't hold reference for poolstats, only mutex.
  SUNRPC: remove printk when back channel request not found
  svcrdma: Implement multi-stage Read completion again
  svcrdma: Copy construction of svc_rqst::rq_arg to rdma_read_complete()
  svcrdma: Add back svcxprt_rdma::sc_read_complete_q
  svcrdma: Add back svc_rdma_recv_ctxt::rc_pages
  svcrdma: Clean up comment in svc_rdma_accept()
  svcrdma: Remove queue-shortening warnings
  svcrdma: Remove pointer addresses shown in dprintk()
  svcrdma: Optimize svc_rdma_cc_init()
  svcrdma: De-duplicate completion ID initialization helpers
  svcrdma: Move the svc_rdma_cc_init() call
  svcrdma: Remove struct svc_rdma_read_info
  svcrdma: Update the synopsis of svc_rdma_read_special()
  svcrdma: Update the synopsis of svc_rdma_read_call_chunk()
  svcrdma: Update synopsis of svc_rdma_read_multiple_chunks()
  svcrdma: Update synopsis of svc_rdma_copy_inline_range()
  svcrdma: Update the synopsis of svc_rdma_read_data_item()
  ...
 2024-01-10 10:20:08 -08:00
Linus Torvalds
0c59ae1290 AFS fileserver rotation fix 
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Merge tag 'afs-fix-rotation-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull afs updates from David Howells:
 "The majority of the patches are aimed at fixing and improving the AFS
  filesystem's rotation over server IP addresses, but there are also
  some fixes from Oleg Nesterov for the use of read_seqbegin_or_lock().

   - Fix fileserver probe handling so that the next round of probes
     doesn't break ongoing server/address rotation by clearing all the
     probe result tracking. This could occasionally cause the rotation
     algorithm to drop straight through, give a 'successful' result
     without actually emitting any RPC calls, leaving the reply buffer
     in an undefined state.

     Instead, detach the probe results into a separate struct and
     allocate a new one each time we start probing and update the
     pointer to it. Probes are also sent in order of address preference
     to try and improve the chance that the preferred one will complete
     first.

   - Fix server rotation so that it uses configurable address
     preferences across on the probes that have completed so far than
     ranking them by RTT as the latter doesn't necessarily give the best
     route. The preference list can be altered by writing into
     /proc/net/afs/addr_prefs.

   - Fix the handling of Read-Only (and Backup) volume callbacks as
     there is one per volume, not one per file, so if someone performs a
     command that, say, offlines the volume but doesn't change it, when
     it comes back online we don't spam the server with a status fetch
     for every vnode we're using. Instead, check the Creation timestamp
     in the VolSync record when prompted by a callback break.

   - Handle volume regression (ie. a RW volume being restored from a
     backup) by scrubbing all cache data for that volume. This is
     detected from the VolSync creation timestamp.

   - Adjust abort handling and abort -> error mapping to match better
     with what other AFS clients do.

   - Fix offline and busy volume state handling as they only apply to
     individual server instances and not entire volumes and the rotation
     algorithm should go and look at other servers if available. Also
     make it sleep briefly before each retry if all the volume instances
     are unavailable"

* tag 'afs-fix-rotation-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (40 commits)
  afs: trace: Log afs_make_call(), including server address
  afs: Fix offline and busy message emission
  afs: Fix fileserver rotation
  afs: Overhaul invalidation handling to better support RO volumes
  afs: Parse the VolSync record in the reply of a number of RPC ops
  afs: Don't leave DONTUSE/NEWREPSITE servers out of server list
  afs: Fix comment in afs_do_lookup()
  afs: Apply server breaks to mmap'd files in the call processor
  afs: Move the vnode/volume validity checking code into its own file
  afs: Defer volume record destruction to a workqueue
  afs: Make it possible to find the volumes that are using a server
  afs: Combine the endpoint state bools into a bitmask
  afs: Keep a record of the current fileserver endpoint state
  afs: Dispatch vlserver probes in priority order
  afs: Dispatch fileserver probes in priority order
  afs: Mark address lists with configured priorities
  afs: Provide a way to configure address priorities
  afs: Remove the unimplemented afs_cmp_addr_list()
  afs: Add some more info to /proc/net/afs/servers
  rxrpc: Create a procfile to display outstanding client conn bundles
  ...
 2024-01-10 10:11:01 -08:00
Linus Torvalds
affc5af36b for-6.8-tag 
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Merge tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "There are no exciting changes for users, it's been mostly API
  conversions and some fixes or refactoring.

  The mount API conversion is a base for future improvements that would
  come with VFS. Metadata processing has been converted to folios, not
  yet enabling the large folios but it's one patch away once everything
  gets tested enough.

  Core changes:

   - convert extent buffers to folios:
      - direct API conversion where possible
      - performance can drop by a few percent on metadata heavy
        workloads, the folio sizes are not constant and the calculations
        add up in the item helpers
      - both regular and subpage modes
      - data cannot be converted yet, we need to port that to iomap and
        there are some other generic changes required

   - convert mount to the new API, should not be user visible:
      - options deprecated long time ago have been removed: inode_cache,
        recovery
      - the new logic that splits mount to two phases slightly changes
        timing of device scanning for multi-device filesystems
      - LSM options will now work (like for selinux)

   - convert delayed nodes radix tree to xarray, preserving the
     preload-like logic that still allows to allocate with GFP_NOFS

   - more validation of sysfs value of scrub_speed_max

   - refactor chunk map structure, reduce size and improve performance

   - extent map refactoring, smaller data structures, improved
     performance

   - reduce size of struct extent_io_tree, embedded in several
     structures

   - temporary pages used for compression are cached and attached to a
     shrinker, this may slightly improve performance

   - in zoned mode, remove redirty extent buffer tracking, zeros are
     written in case an out-of-order is detected and proper data are
     written to the actual write pointer

   - cleanups, refactoring, error message improvements, updated tests

   - verify and update branch name or tag

   - remove unwanted text"

* tag 'for-6.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (89 commits)
  btrfs: pass btrfs_io_geometry into btrfs_max_io_len
  btrfs: pass struct btrfs_io_geometry to set_io_stripe
  btrfs: open code set_io_stripe for RAID56
  btrfs: change block mapping to switch/case in btrfs_map_block
  btrfs: factor out block mapping for single profiles
  btrfs: factor out block mapping for RAID5/6
  btrfs: reduce scope of data_stripes in btrfs_map_block
  btrfs: factor out block mapping for RAID10
  btrfs: factor out block mapping for DUP profiles
  btrfs: factor out RAID1 block mapping
  btrfs: factor out block-mapping for RAID0
  btrfs: re-introduce struct btrfs_io_geometry
  btrfs: factor out helper for single device IO check
  btrfs: migrate btrfs_repair_io_failure() to folio interfaces
  btrfs: migrate eb_bitmap_offset() to folio interfaces
  btrfs: migrate various end io functions to folios
  btrfs: migrate subpage code to folio interfaces
  btrfs: migrate get_eb_page_index() and get_eb_offset_in_page() to folios
  btrfs: don't double put our subpage reference in alloc_extent_buffer
  btrfs: cleanup metadata page pointer usage
  ...
 2024-01-10 09:27:40 -08:00
Linus Torvalds
fb46e22a9e Many singleton patches against the MM code. The patch series which 
are included in this merge do the following:
 
 - Peng Zhang has done some mapletree maintainance work in the
   series
 
 	"maple_tree: add mt_free_one() and mt_attr() helpers"
 	"Some cleanups of maple tree"
 
 - In the series "mm: use memmap_on_memory semantics for dax/kmem"
   Vishal Verma has altered the interworking between memory-hotplug
   and dax/kmem so that newly added 'device memory' can more easily
   have its memmap placed within that newly added memory.
 
 - Matthew Wilcox continues folio-related work (including a few
   fixes) in the patch series
 
 	"Add folio_zero_tail() and folio_fill_tail()"
 	"Make folio_start_writeback return void"
 	"Fix fault handler's handling of poisoned tail pages"
 	"Convert aops->error_remove_page to ->error_remove_folio"
 	"Finish two folio conversions"
 	"More swap folio conversions"
 
 - Kefeng Wang has also contributed folio-related work in the series
 
 	"mm: cleanup and use more folio in page fault"
 
 - Jim Cromie has improved the kmemleak reporting output in the
   series "tweak kmemleak report format".
 
 - In the series "stackdepot: allow evicting stack traces" Andrey
   Konovalov to permits clients (in this case KASAN) to cause
   eviction of no longer needed stack traces.
 
 - Charan Teja Kalla has fixed some accounting issues in the page
   allocator's atomic reserve calculations in the series "mm:
   page_alloc: fixes for high atomic reserve caluculations".
 
 - Dmitry Rokosov has added to the samples/ dorectory some sample
   code for a userspace memcg event listener application.  See the
   series "samples: introduce cgroup events listeners".
 
 - Some mapletree maintanance work from Liam Howlett in the series
   "maple_tree: iterator state changes".
 
 - Nhat Pham has improved zswap's approach to writeback in the
   series "workload-specific and memory pressure-driven zswap
   writeback".
 
 - DAMON/DAMOS feature and maintenance work from SeongJae Park in
   the series
 
 	"mm/damon: let users feed and tame/auto-tune DAMOS"
 	"selftests/damon: add Python-written DAMON functionality tests"
 	"mm/damon: misc updates for 6.8"
 
 - Yosry Ahmed has improved memcg's stats flushing in the series
   "mm: memcg: subtree stats flushing and thresholds".
 
 - In the series "Multi-size THP for anonymous memory" Ryan Roberts
   has added a runtime opt-in feature to transparent hugepages which
   improves performance by allocating larger chunks of memory during
   anonymous page faults.
 
 - Matthew Wilcox has also contributed some cleanup and maintenance
   work against eh buffer_head code int he series "More buffer_head
   cleanups".
 
 - Suren Baghdasaryan has done work on Andrea Arcangeli's series
   "userfaultfd move option".  UFFDIO_MOVE permits userspace heap
   compaction algorithms to move userspace's pages around rather than
   UFFDIO_COPY'a alloc/copy/free.
 
 - Stefan Roesch has developed a "KSM Advisor", in the series
   "mm/ksm: Add ksm advisor".  This is a governor which tunes KSM's
   scanning aggressiveness in response to userspace's current needs.
 
 - Chengming Zhou has optimized zswap's temporary working memory
   use in the series "mm/zswap: dstmem reuse optimizations and
   cleanups".
 
 - Matthew Wilcox has performed some maintenance work on the
   writeback code, both code and within filesystems.  The series is
   "Clean up the writeback paths".
 
 - Andrey Konovalov has optimized KASAN's handling of alloc and
   free stack traces for secondary-level allocators, in the series
   "kasan: save mempool stack traces".
 
 - Andrey also performed some KASAN maintenance work in the series
   "kasan: assorted clean-ups".
 
 - David Hildenbrand has gone to town on the rmap code.  Cleanups,
   more pte batching, folio conversions and more.  See the series
   "mm/rmap: interface overhaul".
 
 - Kinsey Ho has contributed some maintenance work on the MGLRU
   code in the series "mm/mglru: Kconfig cleanup".
 
 - Matthew Wilcox has contributed lruvec page accounting code
   cleanups in the series "Remove some lruvec page accounting
   functions".
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Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Many singleton patches against the MM code. The patch series which are
  included in this merge do the following:

   - Peng Zhang has done some mapletree maintainance work in the series

	'maple_tree: add mt_free_one() and mt_attr() helpers'
	'Some cleanups of maple tree'

   - In the series 'mm: use memmap_on_memory semantics for dax/kmem'
     Vishal Verma has altered the interworking between memory-hotplug
     and dax/kmem so that newly added 'device memory' can more easily
     have its memmap placed within that newly added memory.

   - Matthew Wilcox continues folio-related work (including a few fixes)
     in the patch series

	'Add folio_zero_tail() and folio_fill_tail()'
	'Make folio_start_writeback return void'
	'Fix fault handler's handling of poisoned tail pages'
	'Convert aops->error_remove_page to ->error_remove_folio'
	'Finish two folio conversions'
	'More swap folio conversions'

   - Kefeng Wang has also contributed folio-related work in the series

	'mm: cleanup and use more folio in page fault'

   - Jim Cromie has improved the kmemleak reporting output in the series
     'tweak kmemleak report format'.

   - In the series 'stackdepot: allow evicting stack traces' Andrey
     Konovalov to permits clients (in this case KASAN) to cause eviction
     of no longer needed stack traces.

   - Charan Teja Kalla has fixed some accounting issues in the page
     allocator's atomic reserve calculations in the series 'mm:
     page_alloc: fixes for high atomic reserve caluculations'.

   - Dmitry Rokosov has added to the samples/ dorectory some sample code
     for a userspace memcg event listener application. See the series
     'samples: introduce cgroup events listeners'.

   - Some mapletree maintanance work from Liam Howlett in the series
     'maple_tree: iterator state changes'.

   - Nhat Pham has improved zswap's approach to writeback in the series
     'workload-specific and memory pressure-driven zswap writeback'.

   - DAMON/DAMOS feature and maintenance work from SeongJae Park in the
     series

	'mm/damon: let users feed and tame/auto-tune DAMOS'
	'selftests/damon: add Python-written DAMON functionality tests'
	'mm/damon: misc updates for 6.8'

   - Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
     memcg: subtree stats flushing and thresholds'.

   - In the series 'Multi-size THP for anonymous memory' Ryan Roberts
     has added a runtime opt-in feature to transparent hugepages which
     improves performance by allocating larger chunks of memory during
     anonymous page faults.

   - Matthew Wilcox has also contributed some cleanup and maintenance
     work against eh buffer_head code int he series 'More buffer_head
     cleanups'.

   - Suren Baghdasaryan has done work on Andrea Arcangeli's series
     'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
     compaction algorithms to move userspace's pages around rather than
     UFFDIO_COPY'a alloc/copy/free.

   - Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
     Add ksm advisor'. This is a governor which tunes KSM's scanning
     aggressiveness in response to userspace's current needs.

   - Chengming Zhou has optimized zswap's temporary working memory use
     in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.

   - Matthew Wilcox has performed some maintenance work on the writeback
     code, both code and within filesystems. The series is 'Clean up the
     writeback paths'.

   - Andrey Konovalov has optimized KASAN's handling of alloc and free
     stack traces for secondary-level allocators, in the series 'kasan:
     save mempool stack traces'.

   - Andrey also performed some KASAN maintenance work in the series
     'kasan: assorted clean-ups'.

   - David Hildenbrand has gone to town on the rmap code. Cleanups, more
     pte batching, folio conversions and more. See the series 'mm/rmap:
     interface overhaul'.

   - Kinsey Ho has contributed some maintenance work on the MGLRU code
     in the series 'mm/mglru: Kconfig cleanup'.

   - Matthew Wilcox has contributed lruvec page accounting code cleanups
     in the series 'Remove some lruvec page accounting functions'"

* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
  mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
  mm, treewide: introduce NR_PAGE_ORDERS
  selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
  selftests/mm: skip test if application doesn't has root privileges
  selftests/mm: conform test to TAP format output
  selftests: mm: hugepage-mmap: conform to TAP format output
  selftests/mm: gup_test: conform test to TAP format output
  mm/selftests: hugepage-mremap: conform test to TAP format output
  mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
  mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
  mm/memcontrol: remove __mod_lruvec_page_state()
  mm/khugepaged: use a folio more in collapse_file()
  slub: use a folio in __kmalloc_large_node
  slub: use folio APIs in free_large_kmalloc()
  slub: use alloc_pages_node() in alloc_slab_page()
  mm: remove inc/dec lruvec page state functions
  mm: ratelimit stat flush from workingset shrinker
  kasan: stop leaking stack trace handles
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
  mm/mglru: add dummy pmd_dirty()
  ...
 2024-01-09 11:18:47 -08:00
Linus Torvalds
bfe8eb3b85 Scheduler changes for v6.8: 
- Energy scheduling:
 
     - Consolidate how the max compute capacity is
       used in the scheduler and how we calculate
       the frequency for a level of utilization.
 
     - Rework interface between the scheduler and
       the schedutil governor
 
     - Simplify the util_est logic
 
  - Deadline scheduler:
 
     - Work more towards reducing SCHED_DEADLINE
       starvation of low priority tasks (e.g., SCHED_OTHER)
       tasks when higher priority tasks monopolize CPU
       cycles, via the introduction of 'deadline servers'
       (nested/2-level scheduling).
       "Fair servers" to make use of this facility are
       not introduced yet.
 
  - EEVDF:
 
     - Introduce O(1) fastpath for EEVDF task selection
 
  - NUMA balancing:
 
     - Tune the NUMA-balancing vma scanning logic some more,
       to better distribute the probability
       of a particular vma getting scanned.
 
  - Plus misc fixes, cleanups and updates.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "Energy scheduling:

   - Consolidate how the max compute capacity is used in the scheduler
     and how we calculate the frequency for a level of utilization.

   - Rework interface between the scheduler and the schedutil governor

   - Simplify the util_est logic

  Deadline scheduler:

   - Work more towards reducing SCHED_DEADLINE starvation of low
     priority tasks (e.g., SCHED_OTHER) tasks when higher priority tasks
     monopolize CPU cycles, via the introduction of 'deadline servers'
     (nested/2-level scheduling).

     "Fair servers" to make use of this facility are not introduced yet.

  EEVDF:

   - Introduce O(1) fastpath for EEVDF task selection

  NUMA balancing:

   - Tune the NUMA-balancing vma scanning logic some more, to better
     distribute the probability of a particular vma getting scanned.

  Plus misc fixes, cleanups and updates"

* tag 'sched-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
  sched/fair: Fix tg->load when offlining a CPU
  sched/fair: Remove unused 'next_buddy_marked' local variable in check_preempt_wakeup_fair()
  sched/fair: Use all little CPUs for CPU-bound workloads
  sched/fair: Simplify util_est
  sched/fair: Remove SCHED_FEAT(UTIL_EST_FASTUP, true)
  arm64/amu: Use capacity_ref_freq() to set AMU ratio
  cpufreq/cppc: Set the frequency used for computing the capacity
  cpufreq/cppc: Move and rename cppc_cpufreq_{perf_to_khz|khz_to_perf}()
  energy_model: Use a fixed reference frequency
  cpufreq/schedutil: Use a fixed reference frequency
  cpufreq: Use the fixed and coherent frequency for scaling capacity
  sched/topology: Add a new arch_scale_freq_ref() method
  freezer,sched: Clean saved_state when restoring it during thaw
  sched/fair: Update min_vruntime for reweight_entity() correctly
  sched/doc: Update documentation after renames and synchronize Chinese version
  sched/cpufreq: Rework iowait boost
  sched/cpufreq: Rework schedutil governor performance estimation
  sched/pelt: Avoid underestimation of task utilization
  sched/timers: Explain why idle task schedules out on remote timer enqueue
  sched/cpuidle: Comment about timers requirements VS idle handler
  ...
 2024-01-08 19:49:17 -08:00
Linus Torvalds
f24dc33f8e Timer subsystem changes for v6.8: 
- Various preparatory cleanups & enhancements of the timer-wheel code,
    in preparation for the WIP 'pull timers at expiry' timer migration model
    series (which will replace the current 'push timers at enqueue' migration
    model), by Anna-Maria Behnsen:
 
       - Update comments and clean up confusing variable names
 
       - Add debug check to warn about time travel
 
       - Improve/expand timer-wheel tracepoints
 
       - Optimize away unnecessary IPIs for deferrable timers
 
       - Restructure & clean up next_expiry_recalc()
 
       - Clean up forward_timer_base()
 
       - Introduce __forward_timer_base() and use it to simplify
         and micro-optimize get_next_timer_interrupt()
 
  - Restructure the get_next_timer_interrupt()'s idle logic
    for better readability and to enable a minor optimization.
 
  - Fix the nextevt calculation when no timers are pending
 
  - Fix the sysfs_get_uname() prototype declaration
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer subsystem updates from Ingo Molnar:

 - Various preparatory cleanups & enhancements of the timer-wheel code,
   in preparation for the WIP 'pull timers at expiry' timer migration
   model series (which will replace the current 'push timers at enqueue'
   migration model), by Anna-Maria Behnsen:

      - Update comments and clean up confusing variable names

      - Add debug check to warn about time travel

      - Improve/expand timer-wheel tracepoints

      - Optimize away unnecessary IPIs for deferrable timers

      - Restructure & clean up next_expiry_recalc()

      - Clean up forward_timer_base()

      - Introduce __forward_timer_base() and use it to simplify and
        micro-optimize get_next_timer_interrupt()

 - Restructure the get_next_timer_interrupt()'s idle logic for better
   readability and to enable a minor optimization.

 - Fix the nextevt calculation when no timers are pending

 - Fix the sysfs_get_uname() prototype declaration

* tag 'timers-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Fix nextevt calculation when no timers are pending
  timers: Rework idle logic
  timers: Use already existing function for forwarding timer base
  timers: Split out forward timer base functionality
  timers: Clarify check in forward_timer_base()
  timers: Move store of next event into __next_timer_interrupt()
  timers: Do not IPI for deferrable timers
  tracing/timers: Add tracepoint for tracking timer base is_idle flag
  tracing/timers: Enhance timer_start tracepoint
  tick-sched: Warn when next tick seems to be in the past
  tick/sched: Cleanup confusing variables
  tick-sched: Fix function names in comments
  time: Make sysfs_get_uname() function visible in header
 2024-01-08 18:44:11 -08:00
Ingo Molnar
cdb3033e19 Merge branch 'sched/urgent' into sched/core, to pick up pending v6.7 fixes for the v6.8 merge window 
This fix didn't make it upstream in time, pick it up
for the v6.8 merge window.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2024-01-08 12:57:28 +01:00
Chuck Lever
ecba85e951 svcrdma: Copy construction of svc_rqst::rq_arg to rdma_read_complete() 
Once a set of RDMA Reads are complete, the Read completion handler
will poke the transport to trigger a second call to
svc_rdma_recvfrom(). recvfrom() will then merge the RDMA Read
payloads with the previously received RPC header to form a completed
RPC Call message.

The new code is copied from the svc_rdma_process_read_list() path.
A subsequent patch will make use of this code and remove the code
that this was copied from (svc_rdma_rw.c).

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:33 -05:00
Chuck Lever
2dd6e29a3e svcrdma: Update some svcrdma DMA-related tracepoints 
A send/recv_ctxt already records transport-related information
in the cq.id, thus there is no need to record the IP addresses of
the transport endpoints.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:28 -05:00
Chuck Lever
848760a9e7 svcrdma: DMA error tracepoints should report completion IDs 
Update the DMA error flow tracepoints to report the completion ID of
the failing context. This ties the wait/failure to a particular
operation or request, which is more useful than knowing only the
failing transport.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:28 -05:00
Chuck Lever
ad3656bd84 svcrdma: SQ error tracepoints should report completion IDs 
Update the Send Queue's error flow tracepoints to report the
completion ID of the waiting or failing context. This ties the
wait/failure to a particular operation or request, which is a little
more useful than knowing only the transport that is about to close.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:27 -05:00
Chuck Lever
be2acb1048 rpcrdma: Introduce a simple cid tracepoint class 
De-duplicate some code, making it easier to add new tracepoints that
report only a completion ID.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:27 -05:00
Chuck Lever
3587b5c753 SUNRPC: Remove RQ_SPLICE_OK 
This flag is no longer used.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2024-01-07 17:54:26 -05:00
Paolo Bonzini
9cc52627c7 KVM/riscv changes for 6.8 part #1 
- KVM_GET_REG_LIST improvement for vector registers
 - Generate ISA extension reg_list using macros in get-reg-list selftest
 - Steal time account support along with selftest
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Merge tag 'kvm-riscv-6.8-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv changes for 6.8 part #1

- KVM_GET_REG_LIST improvement for vector registers
- Generate ISA extension reg_list using macros in get-reg-list selftest
- Steal time account support along with selftest
 2024-01-02 13:19:40 -05:00
Paolo Bonzini
136292522e LoongArch KVM changes for v6.8 
1. Optimization for memslot hugepage checking.
 2. Cleanup and fix some HW/SW timer issues.
 3. Add LSX/LASX (128bit/256bit SIMD) support.
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Merge tag 'loongarch-kvm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.8

1. Optimization for memslot hugepage checking.
2. Cleanup and fix some HW/SW timer issues.
3. Add LSX/LASX (128bit/256bit SIMD) support.
 2024-01-02 13:16:29 -05:00
David Howells
abcbd3bfbb afs: trace: Log afs_make_call(), including server address 
Add a tracepoint to log calls to afs_make_call(), including the destination
server address.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
495f2ae9e3 afs: Fix fileserver rotation 
Fix the fileserver rotation so that it doesn't use RTT as the basis for
deciding which server and address to use as this doesn't necessarily give a
good indication of the best path.  Instead, use the configurable preference
list in conjunction with whatever probes have succeeded at the time of
looking.

To this end, make the following changes:

 (1) Keep an array of "server states" to track what addresses we've tried
     on each server and move the waitqueue entries there that we'll need
     for probing.

 (2) Each afs_server_state struct is made to pin the corresponding server's
     endpoint state rather than the afs_operation struct carrying a pin on
     the server we're currently looking at.

 (3) Drop the server list preference; we now always rescan the server list.

 (4) afs_wait_for_probes() now uses the server state list to guide it in
     what it waits for (and to provide the waitqueue entries) and returns
     an indication of whether we'd got a response, run out of responsive
     addresses or the endpoint state had been superseded and we need to
     restart the iteration.

 (5) Call afs_get_address_preferences*() occasionally to refresh the
     preference values.

 (6) When picking a server, scan the addresses of the servers for which we
     have as-yet untested communications, looking for the highest priority
     one and use that instead of trying all the addresses for a particular
     server in ascending-RTT order.

 (7) When a Busy or Offline state is seen across all available servers, do
     a short sleep.

 (8) If we detect that we accessed a future RO volume version whilst it is
     undergoing replication, reissue the op against the older version until
     at least half of the servers are replicated.

 (9) Whilst RO replication is ongoing, increase the frequency of Volume
     Location server checks for that volume to every ten minutes instead of
     hourly.

Also add a tracepoint to track progress through the rotation algorithm.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
453924de62 afs: Overhaul invalidation handling to better support RO volumes 
Overhaul the third party-induced invalidation handling, making use of the
previously added volume-level event counters (cb_scrub and cb_ro_snapshot)
that are now being parsed out of the VolSync record returned by the
fileserver in many of its replies.

This allows better handling of RO (and Backup) volumes.  Since these are
snapshot of a RW volume that are updated atomically simultantanously across
all servers that host them, they only require a single callback promise for
the entire volume.  The currently upstream code assumes that RO volumes
operate in the same manner as RW volumes, and that each file has its own
individual callback - which means that it does a status fetch for *every*
file in a RO volume, whether or not the volume got "released" (volume
callback breaks can occur for other reasons too, such as the volumeserver
taking ownership of a volume from a fileserver).

To this end, make the following changes:

 (1) Change the meaning of the volume's cb_v_break counter so that it is
     now a hint that we need to issue a status fetch to work out the state
     of a volume.  cb_v_break is incremented by volume break callbacks and
     by server initialisation callbacks.

 (2) Add a second counter, cb_v_check, to the afs_volume struct such that
     if this differs from cb_v_break, we need to do a check.  When the
     check is complete, cb_v_check is advanced to what cb_v_break was at
     the start of the status fetch.

 (3) Move the list of mmap'd vnodes to the volume and trigger removal of
     PTEs that map to files on a volume break rather than on a server
     break.

 (4) When a server reinitialisation callback comes in, use the
     server-to-volume reverse mapping added in a preceding patch to iterate
     over all the volumes using that server and clear the volume callback
     promises for that server and the general volume promise as a whole to
     trigger reanalysis.

 (5) Replace the AFS_VNODE_CB_PROMISED flag with an AFS_NO_CB_PROMISE
     (TIME64_MIN) value in the cb_expires_at field, reducing the number of
     checks we need to make.

 (6) Change afs_check_validity() to quickly see if various event counters
     have been incremented or if the vnode or volume callback promise is
     due to expire/has expired without making any changes to the state.
     That is now left to afs_validate() as this may get more complicated in
     future as we may have to examine server records too.

 (7) Overhaul afs_validate() so that it does a single status fetch if we
     need to check the state of either the vnode or the volume - and do so
     under appropriate locking.  The function does the following steps:

     (A) If the vnode/volume is no longer seen as valid, then we take the
     vnode validation lock and, if the volume promise has expired, the
     volume check lock also.  The latter prevents redundant checks being
     made to find out if a new version of the volume got released.

     (B) If a previous RPC call found that the volsync changed unexpectedly
     or that a RO volume was updated, then we unmap all PTEs pointing to
     the file to stop mmap being used for access.

     (C) If the vnode is still seen to be of uncertain validity, then we
     perform an FS.FetchStatus RPC op to jointly update the volume status
     and the vnode status.  This assessment is done as part of parsing the
     reply:

	If the RO volume creation timestamp advances, cb_ro_snapshot is
	incremented; if either the creation or update timestamps changes in
	an unexpected way, the cb_scrub counter is incremented

	If the Data Version returned doesn't match the copy we have
	locally, then we ask for the pagecache to be zapped.  This takes
	care of handling RO update.

     (D) If cb_scrub differs between volume and vnode, the vnode's
     pagecache is zapped and the vnode's cb_scrub is updated unless the
     file is marked as having been deleted.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
16069e1349 afs: Parse the VolSync record in the reply of a number of RPC ops 
A number of fileserver RPC operations return a VolSync record as part of
their reply that gives some information about the state of the volume being
accessed, including:

 (1) A volume Creation timestamp.  For an RW volume, this is the time at
     which the volume was created; if it changes, the RW volume was
     presumably restored from a backup and all cached data should be
     scrubbed as Data Version numbers could regress on the files in the
     volume.

     For an RO volume, this is the time it was last snapshotted from the RW
     volume.  It is expected to advance each time this happens; if it
     regresses, cached data should be scrubbed.

 (2) A volume Update timestamp (Auristor only).  For an RW volume, this is
     updated any time any change is made to a volume or its contents.  If
     it regresses, all cached data must be scrubbed.

     For an RO volume, this is a copy of the RW volume's Update timestamp
     at the point of snapshotting.  It can be used as a version number when
     checking to see if a callback on a RO volume was due to a snapshot.
     If it regresses, all cached data must be scrubbed.

but this is currently not made use of by the in-kernel afs filesystem.

Make the afs filesystem use this by:

 (1) Add an update time field to the afs_volsync struct and use a value of
     TIME64_MIN in both that and the creation time to indicate that they
     are unset.

 (2) Add creation and update time fields to the afs_volume struct and use
     this to track the two timestamps.

 (3) Add a volsync_lock mutex to the afs_volume struct to control
     modification access for when we detect a change in these values.

 (3) Add a 'pre-op volsync' struct to the afs_operation struct to record
     the state of the volume tracking before the op.

 (4) Add a new counter, cb_scrub, to the afs_volume struct to count events
     that require all data to be scrubbed.  A copy is placed in the
     afs_vnode struct (inode) and if they no longer match, a scrub takes
     place.

 (5) When the result of an operation is being parsed, parse the VolSync
     data too, if it is provided.  Note that the two timestamps are handled
     separately, since they don't work in quite the same way.

     - If the afs_volume tracking is unset, just set it and do nothing
       else.

     - If the result timestamps are the same as the ones in afs_volume, do
       nothing.

     - If the timestamps regress, increment cb_scrub if not already done
       so.

     - If the creation timestamp on a RW volume changes, increment cb_scrub
       if not already done so.

     - If the creation timestamp on a RO volume advances, update the server
       list and see if the current server has been excluded, if so reissue
       the op.  Once over half of the replication sites have been updated,
       increment cb_ro_snapshot to indicate updates may be required and
       switch over to excluding unupdated replication sites.

     - If the creation timestamp on a Backup volume advances, just
       increment cb_ro_snapshot to trigger updates.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
32222f0978 afs: Apply server breaks to mmap'd files in the call processor 
Apply server breaks to mmap'd files that are being used from that server
from the call processor work function rather than punting it off to a
workqueue.  The work item, afs_server_init_callback(), then bumps each
individual inode off to its own work item introducing a potentially lengthy
delay.  This reduces that delay at the cost of extending the amount of time
we delay replying to the CB.InitCallBack3 notification RPC from the server.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
f49b594df3 afs: Keep a record of the current fileserver endpoint state 
Keep a record of the current fileserver endpoint state, including the probe
state, and replace it when a new probe is started rather than just
squelching the old state and overwriting it.  Clearance of the old state
can cause a race if there's another thread also currently trying to
communicate with that server.

It appears that this race might be the culprit for some occasions where
kafs complains about invalid data in the RPC reply because the rotation
algorithm fell all the way through without actually issuing an RPC call and
the error return got filled in from the probe state (which has a zero error
recorded).  Whatever happens to be in the caller's reply buffer is then
taken as the response.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
e6a7d7f71b afs: Dispatch vlserver probes in priority order 
When probing all the addresses for a volume location server, dispatch them
in order of descending priority to try and get back highest priority one
first.

Also add a tracepoint to show the transmission and completion of the
probes.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
David Howells
92f091cddd afs: Dispatch fileserver probes in priority order 
When probing all the addresses for a fileserver, dispatch them in order of
descending priority to try and get back highest priority one first.

Also add a tracepoint to show the transmission and completion of the
probes.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2024-01-01 16:37:27 +00:00
Stefan Roesch
5088b49730 mm/ksm: add tracepoint for ksm advisor 
This adds a new tracepoint for the ksm advisor.  It reports the last scan
time, the new setting of the pages_to_scan parameter and the average cpu
percent usage of the ksmd background thread for the last scan.

Link: https://lkml.kernel.org/r/20231218231054.1625219-4-shr@devkernel.io
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-12-29 11:58:27 -08:00
David Howells
3560358a49 afs: Use the netfs write helpers 
Make afs use the netfs write helpers.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:28 +00:00
David Howells
41d8e7673a netfs: Implement a write-through caching option 
Provide a flag whereby a filesystem may request that cifs_perform_write()
perform write-through caching.  This involves putting pages directly into
writeback rather than dirty and attaching them to a write operation as we
go.

Further, the writes being made are limited to the byte range being written
rather than whole folios being written.  This can be used by cifs, for
example, to deal with strict byte-range locking.

This can't be used with content encryption as that may require expansion of
the write RPC beyond the write being made.

This doesn't affect writes via mmap - those are written back in the normal
way; similarly failed writethrough writes are marked dirty and left to
writeback to retry.  Another option would be to simply invalidate them, but
the contents can be simultaneously accessed by read() and through mmap.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:27 +00:00
David Howells
4a79616cfb netfs: Provide a launder_folio implementation 
Provide a launder_folio implementation for netfslib.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:26 +00:00
David Howells
153a9961b5 netfs: Implement unbuffered/DIO write support 
Implement support for unbuffered writes and direct I/O writes.  If the
write is misaligned with respect to the fscrypt block size, then RMW cycles
are performed if necessary.  DIO writes are a special case of unbuffered
writes with extra restriction imposed, such as block size alignment
requirements.

Also provide a field that can tell the code to add some extra space onto
the bounce buffer for use by the filesystem in the case of a
content-encrypted file.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:24 +00:00
David Howells
016dc8516a netfs: Implement unbuffered/DIO read support 
Implement support for unbuffered and DIO reads in the netfs library,
utilising the existing read helper code to do block splitting and
individual queuing.  The code also handles extraction of the destination
buffer from the supplied iterator, allowing async unbuffered reads to take
place.

The read will be split up according to the rsize setting and, if supplied,
the ->clamp_length() method.  Note that the next subrequest will be issued
as soon as issue_op returns, without waiting for previous ones to finish.
The network filesystem needs to pause or handle queuing them if it doesn't
want to fire them all at the server simultaneously.

Once all the subrequests have finished, the state will be assessed and the
amount of data to be indicated as having being obtained will be
determined.  As the subrequests may finish in any order, if an intermediate
subrequest is short, any further subrequests may be copied into the buffer
and then abandoned.

In the future, this will also take care of doing an unbuffered read from
encrypted content, with the decryption being done by the library.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:23 +00:00
David Howells
7f84a7b989 netfs: Make netfs_read_folio() handle streaming-write pages 
netfs_read_folio() needs to handle partially-valid pages that are marked
dirty, but not uptodate in the event that someone tries to read a page was
used to cache data by a streaming write.

In such a case, make netfs_read_folio() set up a bvec iterator that points
to the parts of the folio that need filling and to a sink page for the data
that should be discarded and use that instead of i_pages as the iterator to
be written to.

This requires netfs_rreq_unlock_folios() to convert the page into a normal
dirty uptodate page, getting rid of the partial write record and bumping
the group pointer over to folio->private.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:22 +00:00
David Howells
c38f4e96e6 netfs: Provide func to copy data to pagecache for buffered write 
Provide a netfs write helper, netfs_perform_write() to buffer data to be
written in the pagecache and mark the modified folios dirty.

It will perform "streaming writes" for folios that aren't currently
resident, if possible, storing data in partially modified folios that are
marked dirty, but not uptodate.  It will also tag pages as belonging to
fs-specific write groups if so directed by the filesystem.

This is derived from generic_perform_write(), but doesn't use
->write_begin() and ->write_end(), having that logic rolled in instead.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:22 +00:00
David Howells
0e0f2dfe88 netfs: Dispatch write requests to process a writeback slice 
Dispatch one or more write reqeusts to process a writeback slice, where a
slice is tailored more to logical block divisions within the file (such as
crypto blocks, an object layout or cache granules) than the protocol RPC
maximum capacity.

The dispatch doesn't happen until throttling allows, at which point the
entire writeback slice is processed and queued.  A slice may be written to
multiple destinations (one or more servers and the local cache) and the
writes to each destination might be split up along different lines.

The writeback slice holds the required folios pinned.  An iov_iter is
provided in netfs_write_request that describes the buffer to be used.  This
may be part of the pagecache, may have auxiliary padding pages attached or
may be a bounce buffer resulting from crypto or compression.  Consequently,
the filesystem must not twiddle the folio markings directly.

The following API is available to the filesystem:

 (1) The ->create_write_requests() method is called to ask the filesystem
     to create the requests it needs.  This is passed the writeback slice
     to be processed.

 (2) The filesystem should then call netfs_create_write_request() to create
     the requests it needs.

 (3) Once a request is initialised, netfs_queue_write_request() can be
     called to dispatch it asynchronously, if not completed immediately.

 (4) netfs_write_request_completed() should be called to note the
     completion of a request.

 (5) netfs_get_write_request() and netfs_put_write_request() are provided
     to refcount a request.  These take constants from the netfs_wreq_trace
     enum for logging into ftrace.

 (6) The ->free_write_request is method is called to ask the filesystem to
     clean up a request.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:22 +00:00
David Howells
4fcccc38eb netfs: Make the refcounting of netfs_begin_read() easier to use 
Make the refcounting of netfs_begin_read() easier to use by not eating the
caller's ref on the netfs_io_request it's given.  This makes it easier to
use when we need to look in the request struct after.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:20 +00:00
David Howells
16af134ca4 netfs: Extend the netfs_io_*request structs to handle writes 
Modify the netfs_io_request struct to act as a point around which writes
can be coordinated.  It represents and pins a range of pages that need
writing and a list of regions of dirty data in that range of pages.

If RMW is required, the original data can be downloaded into the bounce
buffer, decrypted if necessary, the modifications made, then the modified
data can be reencrypted/recompressed and sent back to the server.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:19 +00:00
David Howells
768ddb1eac netfs: Limit subrequest by size or number of segments 
Limit a subrequest to a maximum size and/or a maximum number of contiguous
physical regions.  This permits, for instance, an subreq's iterator to be
limited to the number of DMA'able segments that a large RDMA request can
handle.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-28 09:45:19 +00:00
David Howells
98f9fda205 afs: Fold the afs_addr_cursor struct in 
Fold the afs_addr_cursor struct into the afs_operation struct and the
afs_vl_cursor struct and fold its operations into their callers also.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2023-12-24 15:22:55 +00:00
David Howells
1e5d849325 afs: Add a tracepoint for struct afs_addr_list 
Add a tracepoint to track the lifetime of the afs_addr_list struct.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2023-12-24 15:22:54 +00:00
David Howells
72904d7b9b rxrpc, afs: Allow afs to pin rxrpc_peer objects 
Change rxrpc's API such that:

 (1) A new function, rxrpc_kernel_lookup_peer(), is provided to look up an
     rxrpc_peer record for a remote address and a corresponding function,
     rxrpc_kernel_put_peer(), is provided to dispose of it again.

 (2) When setting up a call, the rxrpc_peer object used during a call is
     now passed in rather than being set up by rxrpc_connect_call().  For
     afs, this meenat passing it to rxrpc_kernel_begin_call() rather than
     the full address (the service ID then has to be passed in as a
     separate parameter).

 (3) A new function, rxrpc_kernel_remote_addr(), is added so that afs can
     get a pointer to the transport address for display purposed, and
     another, rxrpc_kernel_remote_srx(), to gain a pointer to the full
     rxrpc address.

 (4) The function to retrieve the RTT from a call, rxrpc_kernel_get_srtt(),
     is then altered to take a peer.  This now returns the RTT or -1 if
     there are insufficient samples.

 (5) Rename rxrpc_kernel_get_peer() to rxrpc_kernel_call_get_peer().

 (6) Provide a new function, rxrpc_kernel_get_peer(), to get a ref on a
     peer the caller already has.

This allows the afs filesystem to pin the rxrpc_peer records that it is
using, allowing faster lookups and pointer comparisons rather than
comparing sockaddr_rxrpc contents.  It also makes it easier to get hold of
the RTT.  The following changes are made to afs:

 (1) The addr_list struct's addrs[] elements now hold a peer struct pointer
     and a service ID rather than a sockaddr_rxrpc.

 (2) When displaying the transport address, rxrpc_kernel_remote_addr() is
     used.

 (3) The port arg is removed from afs_alloc_addrlist() since it's always
     overridden.

 (4) afs_merge_fs_addr4() and afs_merge_fs_addr6() do peer lookup and may
     now return an error that must be handled.

 (5) afs_find_server() now takes a peer pointer to specify the address.

 (6) afs_find_server(), afs_compare_fs_alists() and afs_merge_fs_addr[46]{}
     now do peer pointer comparison rather than address comparison.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
 2023-12-24 15:22:50 +00:00
David Howells
a34847d4b7 afs: Don't use folio->private to record partial modification 
AFS currently uses folio->private to store the range of bytes within a
folio that have been modified - the idea being that if we have, say, a 2MiB
folio and someone writes a single byte, we only have to write back that
single page and not the whole 2MiB folio - thereby saving on network
bandwidth.

Remove this, at least for now, and accept the extra network load (which
doesn't matter in the common case of writing a whole file at a time from
beginning to end).

This makes folio->private available for netfslib to use.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
 2023-12-24 15:08:51 +00:00
David Howells
2daa6404fd afs: Automatically generate trace tag enums 
Automatically generate trace tag enums from the symbol -> string mapping
tables rather than having the enums as well, thereby reducing duplicated
data.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-afs@lists.infradead.org
cc: linux-fsdevel@vger.kernel.org
 2023-12-24 11:36:00 +00:00
David Howells
a790c2584c afs: Remove whitespace before most ')' from the trace header 
checkpatch objects to whitespace before ')', so remove most of it from the
afs trace header.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-afs@lists.infradead.org
cc: linux-fsdevel@vger.kernel.org
 2023-12-24 11:35:59 +00:00
Ingo Molnar
d2e9f53ac5 Linux 6.7-rc6 
-----BEGIN PGP SIGNATURE-----
 
 iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmV/ggAeHHRvcnZhbGRz
 QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGVsQIAKOWsoJRP11U2N9z
 X+GjfDZ7JjV3iWZezDJ6Hmtw1H47PBofhJJXwCaUbIYtDImJxK2mSA7bDF0LKDZQ
 lCupi8R4SPVugFD6Z+cFOLz4dHD1LorlPopldlBmWJRkp85uWdE+Bzbuu8SboypM
 +8e4QxT+XOPXZoGxI9bOjVWN/mnIKcrCINRrhgbUGaCizQG08Mah1oW/QVLYE8at
 hZdLhDkWkV2sbcRMEx0vq7L99Ym5fXkmW1BXC1Uu6SgQ4KX4+28plUROtLGnm4MV
 QwmURUFcURDIqUEaPu66P+1xkAGeEtAYC7N7375pJ++VeuFpHiBjGrT1HTtXfCYx
 Z0FcvsI=
 =r3Rg
 -----END PGP SIGNATURE-----

Merge tag 'v6.7-rc6' into sched/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2023-12-23 15:52:13 +01:00
Anna-Maria Behnsen
b573c73101 tracing/timers: Add tracepoint for tracking timer base is_idle flag 
When debugging timer code the timer tracepoints are very important. There
is no tracepoint when the is_idle flag of the timer base changes. Instead
of always adding manually trace_printk(), add tracepoints which can be
easily enabled whenever required.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20231201092654.34614-6-anna-maria@linutronix.de
 2023-12-20 16:49:38 +01:00
Anna-Maria Behnsen
dbcdcb62b5 tracing/timers: Enhance timer_start tracepoint 
For starting a timer, the timer is enqueued into a bucket of the timer
wheel. The bucket expiry is the defacto expiry of the timer but it is not
equal the timer expiry because of increasing granularity when bucket is in
a higher level of the wheel. To be able to figure out in a trace whether a
timer expired in time or not, the bucket expiry time is required as well.

Add bucket expiry time to the timer_start tracepoint and thereby simplify
the arguments.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20231201092654.34614-5-anna-maria@linutronix.de
 2023-12-20 16:49:38 +01:00
Filipe Manana
f86f7a75e2 btrfs: use the flags of an extent map to identify the compression type 
Currently, in struct extent_map, we use an unsigned int (32 bits) to
identify the compression type of an extent and an unsigned long (64 bits
on a 64 bits platform, 32 bits otherwise) for flags. We are only using
6 different flags, so an unsigned long is excessive and we can use flags
to identify the compression type instead of using a dedicated 32 bits
field.

We can easily have tens or hundreds of thousands (or more) of extent maps
on busy and large filesystems, specially with compression enabled or many
or large files with tons of small extents. So it's convenient to have the
extent_map structure as small as possible in order to use less memory.

So remove the compression type field from struct extent_map, use flags
to identify the compression type and shorten the flags field from an
unsigned long to a u32. This saves 8 bytes (on 64 bits platforms) and
reduces the size of the structure from 136 bytes down to 128 bytes, using
now only two cache lines, and increases the number of extent maps we can
have per 4K page from 30 to 32. By using a u32 for the flags instead of
an unsigned long, we no longer use test_bit(), set_bit() and clear_bit(),
but that level of atomicity is not needed as most flags are never cleared
once set (before adding an extent map to the tree), and the ones that can
be cleared or set after an extent map is added to the tree, are always
performed while holding the write lock on the extent map tree, while the
reader holds a lock on the tree or tests for a flag that never changes
once the extent map is in the tree (such as compression flags).

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2023-12-15 22:59:02 +01:00
Filipe Manana
3c0e918b8f btrfs: remove no longer used EXTENT_MAP_DELALLOC block start value 
After commit ac3c0d36a2 ("btrfs: make fiemap more efficient and accurate
reporting extent sharedness") we no longer need to create special extent
maps during fiemap that have a block start with the EXTENT_MAP_DELALLOC
value. So this block start value for extent maps is no longer used since
then, therefore remove it.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2023-12-15 20:27:03 +01:00
David Sterba
738290c056 btrfs: always set extent_io_tree::inode and drop fs_info 
The extent_io_tree is embedded in several structures, notably in struct
btrfs_inode.  The fs_info is only used for reporting errors and for
reference in trace points. We can get to the pointer through the inode,
but not all io trees set it. However, we always know the owner and
can recognize if inode is valid.  For access helpers are provided, const
variant for the trace points.

This reduces size of extent_io_tree by 8 bytes and following structures
in turn:

- btrfs_inode		1104 -> 1088
- btrfs_device		 520 ->  512
- btrfs_root		1360 -> 1344
- btrfs_transaction	 456 ->  440
- btrfs_fs_info		3600 -> 3592
- reloc_control		1520 -> 1512

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2023-12-15 20:27:02 +01:00
Filipe Manana
7dc66abb5a btrfs: use a dedicated data structure for chunk maps 
Currently we abuse the extent_map structure for two purposes:

1) To actually represent extents for inodes;
2) To represent chunk mappings.

This is odd and has several disadvantages:

1) To create a chunk map, we need to do two memory allocations: one for
   an extent_map structure and another one for a map_lookup structure, so
   more potential for an allocation failure and more complicated code to
   manage and link two structures;

2) For a chunk map we actually only use 3 fields (24 bytes) of the
   respective extent map structure: the 'start' field to have the logical
   start address of the chunk, the 'len' field to have the chunk's size,
   and the 'orig_block_len' field to contain the chunk's stripe size.

   Besides wasting a memory, it's also odd and not intuitive at all to
   have the stripe size in a field named 'orig_block_len'.

   We are also using 'block_len' of the extent_map structure to contain
   the chunk size, so we have 2 fields for the same value, 'len' and
   'block_len', which is pointless;

3) When an extent map is associated to a chunk mapping, we set the bit
   EXTENT_FLAG_FS_MAPPING on its flags and then make its member named
   'map_lookup' point to the associated map_lookup structure. This means
   that for an extent map associated to an inode extent, we are not using
   this 'map_lookup' pointer, so wasting 8 bytes (on a 64 bits platform);

4) Extent maps associated to a chunk mapping are never merged or split so
   it's pointless to use the existing extent map infrastructure.

So add a dedicated data structure named 'btrfs_chunk_map' to represent
chunk mappings, this is basically the existing map_lookup structure with
some extra fields:

1) 'start' to contain the chunk logical address;
2) 'chunk_len' to contain the chunk's length;
3) 'stripe_size' for the stripe size;
4) 'rb_node' for insertion into a rb tree;
5) 'refs' for reference counting.

This way we do a single memory allocation for chunk mappings and we don't
waste memory for them with unused/unnecessary fields from an extent_map.

We also save 8 bytes from the extent_map structure by removing the
'map_lookup' pointer, so the size of struct extent_map is reduced from
144 bytes down to 136 bytes, and we can now have 30 extents map per 4K
page instead of 28.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2023-12-15 20:27:02 +01:00
Chao Yu
87f3afd366 f2fs: add tracepoint for f2fs_vm_page_mkwrite() 
This patch adds to support tracepoint for f2fs_vm_page_mkwrite(),
meanwhile it prints more details for trace_f2fs_filemap_fault().

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
 2023-12-11 13:37:53 -08:00
Paolo Bonzini
c5b31cc237 KVM: remove CONFIG_HAVE_KVM_IRQFD 
All platforms with a kernel irqchip have support for irqfd.  Unify the
two configuration items so that userspace can expect to use irqfd to
inject interrupts into the irqchip.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2023-12-08 15:43:33 -05:00
JP Kobryn
a931c68160 9p: prevent read overrun in protocol dump tracepoint 
An out of bounds read can occur within the tracepoint 9p_protocol_dump. In
the fast assign, there is a memcpy that uses a constant size of 32 (macro
named P9_PROTO_DUMP_SZ). When the copy is invoked, the source buffer is not
guaranteed match this size.  It was found that in some cases the source
buffer size is less than 32, resulting in a read that overruns.

The size of the source buffer seems to be known at the time of the
tracepoint being invoked. The allocations happen within p9_fcall_init(),
where the capacity field is set to the allocated size of the payload
buffer. This patch tries to fix the overrun by changing the fixed array to
a dynamically sized array and using the minimum of the capacity value or
P9_PROTO_DUMP_SZ as its length. The trace log statement is adjusted to
account for this. Note that the trace log no longer splits the payload on
the first 16 bytes. The full payload is now logged to a single line.

To repro the orignal problem, operations to a plan 9 managed resource can
be used. The simplest approach might just be mounting a shared filesystem
(between host and guest vm) using the plan 9 protocol while the tracepoint
is enabled.

mount -t 9p -o trans=virtio <mount_tag> <mount_path>

The bpftrace program below can be used to show the out of bounds read.
Note that a recent version of bpftrace is needed for the raw tracepoint
support. The script was tested using v0.19.0.

/* from include/net/9p/9p.h */
struct p9_fcall {
    u32 size;
    u8 id;
    u16 tag;
    size_t offset;
    size_t capacity;
    struct kmem_cache *cache;
    u8 *sdata;
    bool zc;
};

tracepoint:9p:9p_protocol_dump
{
    /* out of bounds read can happen when this tracepoint is enabled */
}

rawtracepoint:9p_protocol_dump
{
    $pdu = (struct p9_fcall *)arg1;
    $dump_sz = (uint64)32;

    if ($dump_sz > $pdu->capacity) {
        printf("reading %zu bytes from src buffer of %zu bytes\n",
            $dump_sz, $pdu->capacity);
    }
}

Signed-off-by: JP Kobryn <inwardvessel@gmail.com>
Message-ID: <20231204202321.22730-1-inwardvessel@gmail.com>
Fixes: 60ece0833b ("net/9p: allocate appropriate reduced message buffers")
Cc: stable@vger.kernel.org
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
 2023-12-05 21:18:44 +09:00
Chao Yu
8e9cf55ef8 f2fs: show i_mode in trace_f2fs_new_inode() 
This patch supports to show i_mode field in trace_f2fs_new_inode().

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
 2023-11-28 10:52:51 -08:00
Chao Yu
5f23ffdf17 f2fs: introduce tracepoint for f2fs_rename() 
This patch adds tracepoints for f2fs_rename().

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
 2023-11-28 10:52:44 -08:00
David Howells
3798680f2f rxrpc: Fix RTT determination to use any ACK as a source 
Fix RTT determination to be able to use any type of ACK as the response
from which RTT can be calculated provided its ack.serial is non-zero and
matches the serial number of an outgoing DATA or ACK packet.  This
shouldn't be limited to REQUESTED-type ACKs as these can have other types
substituted for them for things like duplicate or out-of-order packets.

Fixes: 4700c4d80b ("rxrpc: Fix loss of RTT samples due to interposed ACK")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
 2023-11-17 02:50:33 +00:00
Peter Zijlstra
5fe6ec8f6a sched: Remove vruntime from trace_sched_stat_runtime() 
Tracing the runtime delta makes sense, observer can sum over time.
Tracing the absolute vruntime makes less sense, inconsistent:
absolute-vs-delta, but also vruntime delta can be computed from
runtime delta.

Removing the vruntime thing also makes the two tracepoint sites
identical, allowing to unify the code in a later patch.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
 2023-11-15 09:57:49 +01:00
Linus Torvalds
ecae0bd517 Many singleton patches against the MM code. The patch series which are 
included in this merge do the following:
 
 - Kemeng Shi has contributed some compation maintenance work in the
   series "Fixes and cleanups to compaction".
 
 - Joel Fernandes has a patchset ("Optimize mremap during mutual
   alignment within PMD") which fixes an obscure issue with mremap()'s
   pagetable handling during a subsequent exec(), based upon an
   implementation which Linus suggested.
 
 - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the
   following patch series:
 
 	mm/damon: misc fixups for documents, comments and its tracepoint
 	mm/damon: add a tracepoint for damos apply target regions
 	mm/damon: provide pseudo-moving sum based access rate
 	mm/damon: implement DAMOS apply intervals
 	mm/damon/core-test: Fix memory leaks in core-test
 	mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
 
 - In the series "Do not try to access unaccepted memory" Adrian Hunter
   provides some fixups for the recently-added "unaccepted memory' feature.
   To increase the feature's checking coverage.  "Plug a few gaps where
   RAM is exposed without checking if it is unaccepted memory".
 
 - In the series "cleanups for lockless slab shrink" Qi Zheng has done
   some maintenance work which is preparation for the lockless slab
   shrinking code.
 
 - Qi Zheng has redone the earlier (and reverted) attempt to make slab
   shrinking lockless in the series "use refcount+RCU method to implement
   lockless slab shrink".
 
 - David Hildenbrand contributes some maintenance work for the rmap code
   in the series "Anon rmap cleanups".
 
 - Kefeng Wang does more folio conversions and some maintenance work in
   the migration code.  Series "mm: migrate: more folio conversion and
   unification".
 
 - Matthew Wilcox has fixed an issue in the buffer_head code which was
   causing long stalls under some heavy memory/IO loads.  Some cleanups
   were added on the way.  Series "Add and use bdev_getblk()".
 
 - In the series "Use nth_page() in place of direct struct page
   manipulation" Zi Yan has fixed a potential issue with the direct
   manipulation of hugetlb page frames.
 
 - In the series "mm: hugetlb: Skip initialization of gigantic tail
   struct pages if freed by HVO" has improved our handling of gigantic
   pages in the hugetlb vmmemmep optimizaton code.  This provides
   significant boot time improvements when significant amounts of gigantic
   pages are in use.
 
 - Matthew Wilcox has sent the series "Small hugetlb cleanups" - code
   rationalization and folio conversions in the hugetlb code.
 
 - Yin Fengwei has improved mlock()'s handling of large folios in the
   series "support large folio for mlock"
 
 - In the series "Expose swapcache stat for memcg v1" Liu Shixin has
   added statistics for memcg v1 users which are available (and useful)
   under memcg v2.
 
 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
   prctl so that userspace may direct the kernel to not automatically
   propagate the denial to child processes.  The series is named "MDWE
   without inheritance".
 
 - Kefeng Wang has provided the series "mm: convert numa balancing
   functions to use a folio" which does what it says.
 
 - In the series "mm/ksm: add fork-exec support for prctl" Stefan Roesch
   makes is possible for a process to propagate KSM treatment across
   exec().
 
 - Huang Ying has enhanced memory tiering's calculation of memory
   distances.  This is used to permit the dax/kmem driver to use "high
   bandwidth memory" in addition to Optane Data Center Persistent Memory
   Modules (DCPMM).  The series is named "memory tiering: calculate
   abstract distance based on ACPI HMAT"
 
 - In the series "Smart scanning mode for KSM" Stefan Roesch has
   optimized KSM by teaching it to retain and use some historical
   information from previous scans.
 
 - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the
   series "mm: memcg: fix tracking of pending stats updates values".
 
 - In the series "Implement IOCTL to get and optionally clear info about
   PTEs" Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits
   us to atomically read-then-clear page softdirty state.  This is mainly
   used by CRIU.
 
 - Hugh Dickins contributed the series "shmem,tmpfs: general maintenance"
   - a bunch of relatively minor maintenance tweaks to this code.
 
 - Matthew Wilcox has increased the use of the VMA lock over file-backed
   page faults in the series "Handle more faults under the VMA lock".  Some
   rationalizations of the fault path became possible as a result.
 
 - In the series "mm/rmap: convert page_move_anon_rmap() to
   folio_move_anon_rmap()" David Hildenbrand has implemented some cleanups
   and folio conversions.
 
 - In the series "various improvements to the GUP interface" Lorenzo
   Stoakes has simplified and improved the GUP interface with an eye to
   providing groundwork for future improvements.
 
 - Andrey Konovalov has sent along the series "kasan: assorted fixes and
   improvements" which does those things.
 
 - Some page allocator maintenance work from Kemeng Shi in the series
   "Two minor cleanups to break_down_buddy_pages".
 
 - In thes series "New selftest for mm" Breno Leitao has developed
   another MM self test which tickles a race we had between madvise() and
   page faults.
 
 - In the series "Add folio_end_read" Matthew Wilcox provides cleanups
   and an optimization to the core pagecache code.
 
 - Nhat Pham has added memcg accounting for hugetlb memory in the series
   "hugetlb memcg accounting".
 
 - Cleanups and rationalizations to the pagemap code from Lorenzo
   Stoakes, in the series "Abstract vma_merge() and split_vma()".
 
 - Audra Mitchell has fixed issues in the procfs page_owner code's new
   timestamping feature which was causing some misbehaviours.  In the
   series "Fix page_owner's use of free timestamps".
 
 - Lorenzo Stoakes has fixed the handling of new mappings of sealed files
   in the series "permit write-sealed memfd read-only shared mappings".
 
 - Mike Kravetz has optimized the hugetlb vmemmap optimization in the
   series "Batch hugetlb vmemmap modification operations".
 
 - Some buffer_head folio conversions and cleanups from Matthew Wilcox in
   the series "Finish the create_empty_buffers() transition".
 
 - As a page allocator performance optimization Huang Ying has added
   automatic tuning to the allocator's per-cpu-pages feature, in the series
   "mm: PCP high auto-tuning".
 
 - Roman Gushchin has contributed the patchset "mm: improve performance
   of accounted kernel memory allocations" which improves their performance
   by ~30% as measured by a micro-benchmark.
 
 - folio conversions from Kefeng Wang in the series "mm: convert page
   cpupid functions to folios".
 
 - Some kmemleak fixups in Liu Shixin's series "Some bugfix about
   kmemleak".
 
 - Qi Zheng has improved our handling of memoryless nodes by keeping them
   off the allocation fallback list.  This is done in the series "handle
   memoryless nodes more appropriately".
 
 - khugepaged conversions from Vishal Moola in the series "Some
   khugepaged folio conversions".
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Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Many singleton patches against the MM code. The patch series which are
  included in this merge do the following:

   - Kemeng Shi has contributed some compation maintenance work in the
     series 'Fixes and cleanups to compaction'

   - Joel Fernandes has a patchset ('Optimize mremap during mutual
     alignment within PMD') which fixes an obscure issue with mremap()'s
     pagetable handling during a subsequent exec(), based upon an
     implementation which Linus suggested

   - More DAMON/DAMOS maintenance and feature work from SeongJae Park i
     the following patch series:

	mm/damon: misc fixups for documents, comments and its tracepoint
	mm/damon: add a tracepoint for damos apply target regions
	mm/damon: provide pseudo-moving sum based access rate
	mm/damon: implement DAMOS apply intervals
	mm/damon/core-test: Fix memory leaks in core-test
	mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval

   - In the series 'Do not try to access unaccepted memory' Adrian
     Hunter provides some fixups for the recently-added 'unaccepted
     memory' feature. To increase the feature's checking coverage. 'Plug
     a few gaps where RAM is exposed without checking if it is
     unaccepted memory'

   - In the series 'cleanups for lockless slab shrink' Qi Zheng has done
     some maintenance work which is preparation for the lockless slab
     shrinking code

   - Qi Zheng has redone the earlier (and reverted) attempt to make slab
     shrinking lockless in the series 'use refcount+RCU method to
     implement lockless slab shrink'

   - David Hildenbrand contributes some maintenance work for the rmap
     code in the series 'Anon rmap cleanups'

   - Kefeng Wang does more folio conversions and some maintenance work
     in the migration code. Series 'mm: migrate: more folio conversion
     and unification'

   - Matthew Wilcox has fixed an issue in the buffer_head code which was
     causing long stalls under some heavy memory/IO loads. Some cleanups
     were added on the way. Series 'Add and use bdev_getblk()'

   - In the series 'Use nth_page() in place of direct struct page
     manipulation' Zi Yan has fixed a potential issue with the direct
     manipulation of hugetlb page frames

   - In the series 'mm: hugetlb: Skip initialization of gigantic tail
     struct pages if freed by HVO' has improved our handling of gigantic
     pages in the hugetlb vmmemmep optimizaton code. This provides
     significant boot time improvements when significant amounts of
     gigantic pages are in use

   - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code
     rationalization and folio conversions in the hugetlb code

   - Yin Fengwei has improved mlock()'s handling of large folios in the
     series 'support large folio for mlock'

   - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has
     added statistics for memcg v1 users which are available (and
     useful) under memcg v2

   - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
     prctl so that userspace may direct the kernel to not automatically
     propagate the denial to child processes. The series is named 'MDWE
     without inheritance'

   - Kefeng Wang has provided the series 'mm: convert numa balancing
     functions to use a folio' which does what it says

   - In the series 'mm/ksm: add fork-exec support for prctl' Stefan
     Roesch makes is possible for a process to propagate KSM treatment
     across exec()

   - Huang Ying has enhanced memory tiering's calculation of memory
     distances. This is used to permit the dax/kmem driver to use 'high
     bandwidth memory' in addition to Optane Data Center Persistent
     Memory Modules (DCPMM). The series is named 'memory tiering:
     calculate abstract distance based on ACPI HMAT'

   - In the series 'Smart scanning mode for KSM' Stefan Roesch has
     optimized KSM by teaching it to retain and use some historical
     information from previous scans

   - Yosry Ahmed has fixed some inconsistencies in memcg statistics in
     the series 'mm: memcg: fix tracking of pending stats updates
     values'

   - In the series 'Implement IOCTL to get and optionally clear info
     about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap
     which permits us to atomically read-then-clear page softdirty
     state. This is mainly used by CRIU

   - Hugh Dickins contributed the series 'shmem,tmpfs: general
     maintenance', a bunch of relatively minor maintenance tweaks to
     this code

   - Matthew Wilcox has increased the use of the VMA lock over
     file-backed page faults in the series 'Handle more faults under the
     VMA lock'. Some rationalizations of the fault path became possible
     as a result

   - In the series 'mm/rmap: convert page_move_anon_rmap() to
     folio_move_anon_rmap()' David Hildenbrand has implemented some
     cleanups and folio conversions

   - In the series 'various improvements to the GUP interface' Lorenzo
     Stoakes has simplified and improved the GUP interface with an eye
     to providing groundwork for future improvements

   - Andrey Konovalov has sent along the series 'kasan: assorted fixes
     and improvements' which does those things

   - Some page allocator maintenance work from Kemeng Shi in the series
     'Two minor cleanups to break_down_buddy_pages'

   - In thes series 'New selftest for mm' Breno Leitao has developed
     another MM self test which tickles a race we had between madvise()
     and page faults

   - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups
     and an optimization to the core pagecache code

   - Nhat Pham has added memcg accounting for hugetlb memory in the
     series 'hugetlb memcg accounting'

   - Cleanups and rationalizations to the pagemap code from Lorenzo
     Stoakes, in the series 'Abstract vma_merge() and split_vma()'

   - Audra Mitchell has fixed issues in the procfs page_owner code's new
     timestamping feature which was causing some misbehaviours. In the
     series 'Fix page_owner's use of free timestamps'

   - Lorenzo Stoakes has fixed the handling of new mappings of sealed
     files in the series 'permit write-sealed memfd read-only shared
     mappings'

   - Mike Kravetz has optimized the hugetlb vmemmap optimization in the
     series 'Batch hugetlb vmemmap modification operations'

   - Some buffer_head folio conversions and cleanups from Matthew Wilcox
     in the series 'Finish the create_empty_buffers() transition'

   - As a page allocator performance optimization Huang Ying has added
     automatic tuning to the allocator's per-cpu-pages feature, in the
     series 'mm: PCP high auto-tuning'

   - Roman Gushchin has contributed the patchset 'mm: improve
     performance of accounted kernel memory allocations' which improves
     their performance by ~30% as measured by a micro-benchmark

   - folio conversions from Kefeng Wang in the series 'mm: convert page
     cpupid functions to folios'

   - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about
     kmemleak'

   - Qi Zheng has improved our handling of memoryless nodes by keeping
     them off the allocation fallback list. This is done in the series
     'handle memoryless nodes more appropriately'

   - khugepaged conversions from Vishal Moola in the series 'Some
     khugepaged folio conversions'"

[ bcachefs conflicts with the dynamically allocated shrinkers have been
  resolved as per Stephen Rothwell in

     https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/

  with help from Qi Zheng.

  The clone3 test filtering conflict was half-arsed by yours truly ]

* tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits)
  mm/damon/sysfs: update monitoring target regions for online input commit
  mm/damon/sysfs: remove requested targets when online-commit inputs
  selftests: add a sanity check for zswap
  Documentation: maple_tree: fix word spelling error
  mm/vmalloc: fix the unchecked dereference warning in vread_iter()
  zswap: export compression failure stats
  Documentation: ubsan: drop "the" from article title
  mempolicy: migration attempt to match interleave nodes
  mempolicy: mmap_lock is not needed while migrating folios
  mempolicy: alloc_pages_mpol() for NUMA policy without vma
  mm: add page_rmappable_folio() wrapper
  mempolicy: remove confusing MPOL_MF_LAZY dead code
  mempolicy: mpol_shared_policy_init() without pseudo-vma
  mempolicy trivia: use pgoff_t in shared mempolicy tree
  mempolicy trivia: slightly more consistent naming
  mempolicy trivia: delete those ancient pr_debug()s
  mempolicy: fix migrate_pages(2) syscall return nr_failed
  kernfs: drop shared NUMA mempolicy hooks
  hugetlbfs: drop shared NUMA mempolicy pretence
  mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()
  ...
 2023-11-02 19:38:47 -10:00
Linus Torvalds
6ed92e559a SCSI misc on 20231102 
Updates to the usual drivers (ufs, megaraid_sas, lpfc, target, ibmvfc,
 scsi_debug) plus the usual assorted minor fixes and updates.  The
 major change this time around is a prep patch for rethreading of the
 driver reset handler API not to take a scsi_cmd structure which starts
 to reduce various drivers' dependence on scsi_cmd in error handling.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (ufs, megaraid_sas, lpfc, target, ibmvfc,
  scsi_debug) plus the usual assorted minor fixes and updates.

  The major change this time around is a prep patch for rethreading of
  the driver reset handler API not to take a scsi_cmd structure which
  starts to reduce various drivers' dependence on scsi_cmd in error
  handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (132 commits)
  scsi: ufs: core: Leave space for '\0' in utf8 desc string
  scsi: ufs: core: Conversion to bool not necessary
  scsi: ufs: core: Fix race between force complete and ISR
  scsi: megaraid: Fix up debug message in megaraid_abort_and_reset()
  scsi: aic79xx: Fix up NULL command in ahd_done()
  scsi: message: fusion: Initialize return value in mptfc_bus_reset()
  scsi: mpt3sas: Fix loop logic
  scsi: snic: Remove useless code in snic_dr_clean_pending_req()
  scsi: core: Add comment to target_destroy in scsi_host_template
  scsi: core: Clean up scsi_dev_queue_ready()
  scsi: pmcraid: Add missing scsi_device_put() in pmcraid_eh_target_reset_handler()
  scsi: target: core: Fix kernel-doc comment
  scsi: pmcraid: Fix kernel-doc comment
  scsi: core: Handle depopulation and restoration in progress
  scsi: ufs: core: Add support for parsing OPP
  scsi: ufs: core: Add OPP support for scaling clocks and regulators
  scsi: ufs: dt-bindings: common: Add OPP table
  scsi: scsi_debug: Add param to control sdev's allow_restart
  scsi: scsi_debug: Add debugfs interface to fail target reset
  scsi: scsi_debug: Add new error injection type: Reset LUN failed
  ...
 2023-11-02 15:13:50 -10:00
Linus Torvalds
1e0c505e13 asm-generic updates for v6.7 
The ia64 architecture gets its well-earned retirement as planned,
 now that there is one last (mostly) working release that will
 be maintained as an LTS kernel.
 
 The architecture specific system call tables are updated for
 the added map_shadow_stack() syscall and to remove references
 to the long-gone sys_lookup_dcookie() syscall.
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Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull ia64 removal and asm-generic updates from Arnd Bergmann:

 - The ia64 architecture gets its well-earned retirement as planned,
   now that there is one last (mostly) working release that will be
   maintained as an LTS kernel.

 - The architecture specific system call tables are updated for the
   added map_shadow_stack() syscall and to remove references to the
   long-gone sys_lookup_dcookie() syscall.

* tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  hexagon: Remove unusable symbols from the ptrace.h uapi
  asm-generic: Fix spelling of architecture
  arch: Reserve map_shadow_stack() syscall number for all architectures
  syscalls: Cleanup references to sys_lookup_dcookie()
  Documentation: Drop or replace remaining mentions of IA64
  lib/raid6: Drop IA64 support
  Documentation: Drop IA64 from feature descriptions
  kernel: Drop IA64 support from sig_fault handlers
  arch: Remove Itanium (IA-64) architecture
 2023-11-01 15:28:33 -10:00
Linus Torvalds
7d461b291e drm for 6.7-rc1 
kernel:
 - add initial vmemdup-user-array
 
 core:
 - fix platform remove() to return void
 - drm_file owner updated to reflect owner
 - move size calcs to drm buddy allocator
 - let GPUVM build as a module
 - allow variable number of run-queues in scheduler
 
 edid:
 - handle bad h/v sync_end in EDIDs
 
 panfrost:
 - add Boris as maintainer
 
 fbdev:
 - use fb_ops helpers more
 - only allow logo use from fbcon
 - rename fb_pgproto to pgprot_framebuffer
 - add HPD state to drm_connector_oob_hotplug_event
 - convert to fbdev i/o mem helpers
 
 i915:
 - Enable meteorlake by default
 - Early Xe2 LPD/Lunarlake display enablement
 - Rework subplatforms into IP version checks
 - GuC based TLB invalidation for Meteorlake
 - Display rework for future Xe driver integration
 - LNL FBC features
 - LNL display feature capability reads
 - update recommended fw versions for DG2+
 - drop fastboot module parameter
 - added deviceid for Arrowlake-S
 - drop preproduction workarounds
 - don't disable preemption for resets
 - cleanup inlines in headers
 - PXP firmware loading fix
 - Fix sg list lengths
 - DSC PPS state readout/verification
 - Add more RPL P/U PCI IDs
 - Add new DG2-G12 stepping
 - DP enhanced framing support to state checker
 - Improve shared link bandwidth management
 - stop using GEM macros in display code
 - refactor related code into display code
 - locally enable W=1 warnings
 - remove PSR watchdog timers on LNL
 
 amdgpu:
 - RAS/FRU EEPROM updatse
 - IP discovery updatses
 - GC 11.5 support
 - DCN 3.5 support
 - VPE 6.1 support
 - NBIO 7.11 support
 - DML2 support
 - lots of IP updates
 - use flexible arrays for bo list handling
 - W=1 fixes
 - Enable seamless boot in more cases
 - Enable context type property for HDMI
 - Rework GPUVM TLB flushing
 - VCN IB start/size alignment fixes
 
 amdkfd:
 - GC 10/11 fixes
 - GC 11.5 support
 - use partial migration in GPU faults
 
 radeon:
 - W=1 Fixes
 - fix some possible buffer overflow/NULL derefs
 nouveau:
 - update uapi for NO_PREFETCH
 - scheduler/fence fixes
 - rework suspend/resume for GSP-RM
 - rework display in preparation for GSP-RM
 
 habanalabs:
 - uapi: expose tsc clock
 - uapi: block access to eventfd through control device
 - uapi: force dma-buf export to PAGE_SIZE alignments
 - complete move to accel subsystem
 - move firmware interface include files
 - perform hard reset on PCIe AXI drain event
 - optimise user interrupt handling
 
 msm:
 - DP: use existing helpers for DPCD
 - DPU: interrupts reworked
 - gpu: a7xx (a730/a740) support
 - decouple msm_drv from kms for headless devices
 
 mediatek:
 - MT8188 dsi/dp/edp support
 - DDP GAMMA - 12 bit LUT support
 - connector dynamic selection capability
 
 rockchip:
 - rv1126 mipi-dsi/vop support
 - add planar formats
 
 ast:
 - rename constants
 
 panels:
 - Mitsubishi AA084XE01
 - JDI LPM102A188A
 - LTK050H3148W-CTA6
 
 ivpu:
 - power management fixes
 
 qaic:
 - add detach slice bo api
 
 komeda:
 - add NV12 writeback
 
 tegra:
 - support NVSYNC/NHSYNC
 - host1x suspend fixes
 
 ili9882t:
 - separate into own driver
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Merge tag 'drm-next-2023-10-31-1' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights:
   - AMD adds some more upcoming HW platforms
   - Intel made Meteorlake stable and started adding Lunarlake
   - nouveau has a bunch of display rework in prepartion for the NVIDIA
     GSP firmware support
   - msm adds a7xx support
   - habanalabs has finished migration to accel subsystem

  Detail summary:

  kernel:
   - add initial vmemdup-user-array

  core:
   - fix platform remove() to return void
   - drm_file owner updated to reflect owner
   - move size calcs to drm buddy allocator
   - let GPUVM build as a module
   - allow variable number of run-queues in scheduler

  edid:
   - handle bad h/v sync_end in EDIDs

  panfrost:
   - add Boris as maintainer

  fbdev:
   - use fb_ops helpers more
   - only allow logo use from fbcon
   - rename fb_pgproto to pgprot_framebuffer
   - add HPD state to drm_connector_oob_hotplug_event
   - convert to fbdev i/o mem helpers

  i915:
   - Enable meteorlake by default
   - Early Xe2 LPD/Lunarlake display enablement
   - Rework subplatforms into IP version checks
   - GuC based TLB invalidation for Meteorlake
   - Display rework for future Xe driver integration
   - LNL FBC features
   - LNL display feature capability reads
   - update recommended fw versions for DG2+
   - drop fastboot module parameter
   - added deviceid for Arrowlake-S
   - drop preproduction workarounds
   - don't disable preemption for resets
   - cleanup inlines in headers
   - PXP firmware loading fix
   - Fix sg list lengths
   - DSC PPS state readout/verification
   - Add more RPL P/U PCI IDs
   - Add new DG2-G12 stepping
   - DP enhanced framing support to state checker
   - Improve shared link bandwidth management
   - stop using GEM macros in display code
   - refactor related code into display code
   - locally enable W=1 warnings
   - remove PSR watchdog timers on LNL

  amdgpu:
   - RAS/FRU EEPROM updatse
   - IP discovery updatses
   - GC 11.5 support
   - DCN 3.5 support
   - VPE 6.1 support
   - NBIO 7.11 support
   - DML2 support
   - lots of IP updates
   - use flexible arrays for bo list handling
   - W=1 fixes
   - Enable seamless boot in more cases
   - Enable context type property for HDMI
   - Rework GPUVM TLB flushing
   - VCN IB start/size alignment fixes

  amdkfd:
   - GC 10/11 fixes
   - GC 11.5 support
   - use partial migration in GPU faults

  radeon:
   - W=1 Fixes
   - fix some possible buffer overflow/NULL derefs

  nouveau:
   - update uapi for NO_PREFETCH
   - scheduler/fence fixes
   - rework suspend/resume for GSP-RM
   - rework display in preparation for GSP-RM

  habanalabs:
   - uapi: expose tsc clock
   - uapi: block access to eventfd through control device
   - uapi: force dma-buf export to PAGE_SIZE alignments
   - complete move to accel subsystem
   - move firmware interface include files
   - perform hard reset on PCIe AXI drain event
   - optimise user interrupt handling

  msm:
   - DP: use existing helpers for DPCD
   - DPU: interrupts reworked
   - gpu: a7xx (a730/a740) support
   - decouple msm_drv from kms for headless devices

  mediatek:
   - MT8188 dsi/dp/edp support
   - DDP GAMMA - 12 bit LUT support
   - connector dynamic selection capability

  rockchip:
   - rv1126 mipi-dsi/vop support
   - add planar formats

  ast:
   - rename constants

  panels:
   - Mitsubishi AA084XE01
   - JDI LPM102A188A
   - LTK050H3148W-CTA6

  ivpu:
   - power management fixes

  qaic:
   - add detach slice bo api

  komeda:
   - add NV12 writeback

  tegra:
   - support NVSYNC/NHSYNC
   - host1x suspend fixes

  ili9882t:
   - separate into own driver"

* tag 'drm-next-2023-10-31-1' of git://anongit.freedesktop.org/drm/drm: (1803 commits)
  drm/amdgpu: Remove unused variables from amdgpu_show_fdinfo
  drm/amdgpu: Remove duplicate fdinfo fields
  drm/amd/amdgpu: avoid to disable gfxhub interrupt when driver is unloaded
  drm/amdgpu: Add EXT_COHERENT support for APU and NUMA systems
  drm/amdgpu: Retrieve CE count from ce_count_lo_chip in EccInfo table
  drm/amdgpu: Identify data parity error corrected in replay mode
  drm/amdgpu: Fix typo in IP discovery parsing
  drm/amd/display: fix S/G display enablement
  drm/amdxcp: fix amdxcp unloads incompletely
  drm/amd/amdgpu: fix the GPU power print error in pm info
  drm/amdgpu: Use pcie domain of xcc acpi objects
  drm/amd: check num of link levels when update pcie param
  drm/amdgpu: Add a read to GFX v9.4.3 ring test
  drm/amd/pm: call smu_cmn_get_smc_version in is_mode1_reset_supported.
  drm/amdgpu: get RAS poison status from DF v4_6_2
  drm/amdgpu: Use discovery table's subrevision
  drm/amd/display: 3.2.256
  drm/amd/display: add interface to query SubVP status
  drm/amd/display: Read before writing Backlight Mode Set Register
  drm/amd/display: Disable SYMCLK32_SE RCO on DCN314
  ...
 2023-11-01 06:28:35 -10:00
Linus Torvalds
59fff63cc2 platform-drivers-x86 for v6.7-1 
Highlights:
  - asus-wmi:		Support for screenpad and solve brightness key
 			press duplication
  - int3472:		Eliminate the last use of deprecated GPIO functions
  - mlxbf-pmc:		New HW support
  - msi-ec:		Support new EC configurations
  - thinkpad_acpi:	Support reading aux MAC address during passthrough
  - wmi: 		Fixes & improvements
  - x86-android-tablets:	Detection fix and avoid use of GPIO private APIs
  - Debug & metrics interface improvements
  - Miscellaneous cleanups / fixes / improvements
 
 The following is an automated shortlog grouped by driver:
 
 acer-wmi:
  -  Remove void function return
 
 amd/hsmp:
  -  add support for metrics tbl
  -  create plat specific struct
  -  Fix iomem handling
  -  improve the error log
 
 amd/pmc:
  -  Add dump_custom_stb module parameter
  -  Add PMFW command id to support S2D force flush
  -  Handle overflow cases where the num_samples range is higher
  -  Use flex array when calling amd_pmc_stb_debugfs_open_v2()
 
 asus-wireless:
  -  Replace open coded acpi_match_acpi_device()
 
 asus-wmi:
  -  add support for ASUS screenpad
  -  Do not report brightness up/down keys when also reported by acpi_video
 
 gpiolib: acpi:
  -  Add a ignore interrupt quirk for Peaq C1010
  -  Check if a GPIO is listed in ignore_interrupt earlier
 
 hp-bioscfg:
  -  Annotate struct bios_args with __counted_by
 
 inspur-platform-profile:
  -  Add platform profile support
 
 int3472:
  -  Add new skl_int3472_fill_gpiod_lookup() helper
  -  Add new skl_int3472_gpiod_get_from_temp_lookup() helper
  -  Stop using gpiod_toggle_active_low()
  -  Switch to devm_get_gpiod()
 
 intel: bytcrc_pwrsrc:
  -  Convert to platform remove callback returning void
 
 intel/ifs:
  -  Add new CPU support
  -  Add new error code
  -  ARRAY BIST for Sierra Forest
  -  Gen2 scan image loading
  -  Gen2 Scan test support
  -  Metadata validation for start_chunk
  -  Refactor image loading code
  -  Store IFS generation number
  -  Validate image size
 
 intel_speed_select_if:
  -  Remove hardcoded map size
  -  Use devm_ioremap_resource
 
 intel/tpmi:
  -  Add debugfs support for read/write blocked
  -  Add defines to get version information
 
 intel-uncore-freq:
  -  Ignore minor version change
 
 ISST:
  -  Allow level 0 to be not present
  -  Ignore minor version change
  -  Use fuse enabled mask instead of allowed levels
 
 mellanox:
  -  Fix misspelling error in routine name
  -  Rename some init()/exit() functions for consistent naming
 
 mlxbf-bootctl:
  -  Convert to platform remove callback returning void
 
 mlxbf-pmc:
  -  Add support for BlueField-3
 
 mlxbf-tmfifo:
  -  Convert to platform remove callback returning void
 
 mlx-Convert to platform remove callback returning void:
  - mlx-Convert to platform remove callback returning void
 
 mlxreg-hotplug:
  -  Convert to platform remove callback returning void
 
 mlxreg-io:
  -  Convert to platform remove callback returning void
 
 mlxreg-lc:
  -  Convert to platform remove callback returning void
 
 msi-ec:
  -  Add more EC configs
  -  rename fn_super_swap
 
 nvsw-sn2201:
  -  Convert to platform remove callback returning void
 
 sel3350-Convert to platform remove callback returning void:
  - sel3350-Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-apollolake:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-elkhartlake:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt-f7188x:
  -  Convert to platform remove callback returning void
 
 siemens: simatic-ipc-batt:
  -  Simplify simatic_ipc_batt_remove()
 
 surface: acpi-notify:
  -  Convert to platform remove callback returning void
 
 surface: aggregator:
  -  Annotate struct ssam_event with __counted_by
 
 surface: aggregator-cdev:
  -  Convert to platform remove callback returning void
 
 surface: aggregator-registry:
  -  Convert to platform remove callback returning void
 
 surface: dtx:
  -  Convert to platform remove callback returning void
 
 surface: gpe:
  -  Convert to platform remove callback returning void
 
 surface: hotplug:
  -  Convert to platform remove callback returning void
 
 surface: surface3-wmi:
  -  Convert to platform remove callback returning void
 
 think-lmi:
  -  Add bulk save feature
  -  Replace kstrdup() + strreplace() with kstrdup_and_replace()
  -  Use strreplace() to replace a character by nul
 
 thinkpad_acpi:
  -  Add battery quirk for Thinkpad X120e
  -  replace deprecated strncpy with memcpy
  -  sysfs interface to auxmac
 
 tools/power/x86/intel-speed-select:
  -  Display error for core-power support
  -  Increase max CPUs in one request
  -  No TRL for non compute domains
  -  Sanitize integer arguments
  -  turbo-mode enable disable swapped
  -  Update help for TRL
  -  Use cgroup isolate for CPU 0
  -  v1.18 release
 
 wmi:
  -  Decouple probe deferring from wmi_block_list
  -  Decouple WMI device removal from wmi_block_list
  -  Fix opening of char device
  -  Fix probe failure when failing to register WMI devices
  -  Fix refcounting of WMI devices in legacy functions
 
 x86-android-tablets:
  -  Add a comment about x86_android_tablet_get_gpiod()
  -  Create a platform_device from module_init()
  -  Drop "linux,power-supply-name" from lenovo_yt3_bq25892_0_props[]
  -  Fix Lenovo Yoga Tablet 2 830F/L vs 1050F/L detection
  -  Remove invalid_aei_gpiochip from Peaq C1010
  -  Remove invalid_aei_gpiochip support
  -  Stop using gpiolib private APIs
  -  Use platform-device as gpio-keys parent
 
 xo15-ebook:
  -  Replace open coded acpi_match_acpi_device()
 
 Merges:
  -  Merge branch 'pdx86/platform-drivers-x86-int3472' into review-ilpo
  -  Merge branch 'pdx86/platform-drivers-x86-mellanox-init' into review-ilpo
  -  Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-ilpo
  -  Merge remote-tracking branch 'pdx86/platform-drivers-x86-android-tablets' into review-hans
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Merge tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Ilpo Järvinen:

 - asus-wmi: Support for screenpad and solve brightness key press
   duplication

 - int3472: Eliminate the last use of deprecated GPIO functions

 - mlxbf-pmc: New HW support

 - msi-ec: Support new EC configurations

 - thinkpad_acpi: Support reading aux MAC address during passthrough

 - wmi: Fixes & improvements

 - x86-android-tablets: Detection fix and avoid use of GPIO private APIs

 - Debug & metrics interface improvements

 - Miscellaneous cleanups / fixes / improvements

* tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits)
  platform/x86: inspur-platform-profile: Add platform profile support
  platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
  platform/x86: wmi: Decouple WMI device removal from wmi_block_list
  platform/x86: wmi: Fix opening of char device
  platform/x86: wmi: Fix probe failure when failing to register WMI devices
  platform/x86: wmi: Fix refcounting of WMI devices in legacy functions
  platform/x86: wmi: Decouple probe deferring from wmi_block_list
  platform/x86/amd/hsmp: Fix iomem handling
  platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video
  platform/x86: thinkpad_acpi: replace deprecated strncpy with memcpy
  tools/power/x86/intel-speed-select: v1.18 release
  tools/power/x86/intel-speed-select: Use cgroup isolate for CPU 0
  tools/power/x86/intel-speed-select: Increase max CPUs in one request
  tools/power/x86/intel-speed-select: Display error for core-power support
  tools/power/x86/intel-speed-select: No TRL for non compute domains
  tools/power/x86/intel-speed-select: turbo-mode enable disable swapped
  tools/power/x86/intel-speed-select: Update help for TRL
  tools/power/x86/intel-speed-select: Sanitize integer arguments
  platform/x86: acer-wmi: Remove void function return
  platform/x86/amd/pmc: Add dump_custom_stb module parameter
  ...
 2023-10-31 17:53:00 -10:00
Linus Torvalds
89ed67ef12 Networking changes for 6.7. 
Core & protocols
 ----------------
 
  - Support usec resolution of TCP timestamps, enabled selectively by
    a route attribute.
 
  - Defer regular TCP ACK while processing socket backlog, try to send
    a cumulative ACK at the end. Increase single TCP flow performance
    on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
 
  - The Fair Queuing (FQ) packet scheduler:
    - add built-in 3 band prio / WRR scheduling
    - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
    - improve inactive flow reporting
    - optimize the layout of structures for better cache locality
 
  - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
    replacement for the old MD5 option.
 
  - Add more retransmission timeout (RTO) related statistics to TCP_INFO.
 
  - Support sending fragmented skbs over vsock sockets.
 
  - Make sure we send SIGPIPE for vsock sockets if socket was shutdown().
 
  - Add sysctl for ignoring lower limit on lifetime in Router
    Advertisement PIO, based on an in-progress IETF draft.
 
  - Add sysctl to control activation of TCP ping-pong mode.
 
  - Add sysctl to make connection timeout in MPTCP configurable.
 
  - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
    limit the number of wakeups.
 
  - Support netlink GET for MDB (multicast forwarding), allowing user
    space to request a single MDB entry instead of dumping the entire
    table.
 
  - Support selective FDB flushing in the VXLAN tunnel driver.
 
  - Allow limiting learned FDB entries in bridges, prevent OOM attacks.
 
  - Allow controlling via configfs netconsole targets which were created
    via the kernel cmdline at boot, rather than via configfs at runtime.
 
  - Support multiple PTP timestamp event queue readers with different
    filters.
 
  - MCTP over I3C.
 
 BPF
 ---
 
  - Add new veth-like netdevice where BPF program defines the logic
    of the xmit routine. It can operate in L3 and L2 mode.
 
  - Support exceptions - allow asserting conditions which should
    never be true but are hard for the verifier to infer.
    With some extra flexibility around handling of the exit / failure.
    https://lwn.net/Articles/938435/
 
  - Add support for local per-cpu kptr, allow allocating and storing
    per-cpu objects in maps. Access to those objects operates on
    the value for the current CPU. This allows to deprecate local
    one-off implementations of per-CPU storage like
    BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
 
  - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
    for systemd to re-implement the LogNamespace feature which allows
    running multiple instances of systemd-journald to process the logs
    of different services.
 
  - Enable open-coded task_vma iteration, after maple tree conversion
    made it hard to directly walk VMAs in tracing programs.
 
  - Add open-coded task, css_task and css iterator support.
    One of the use cases is customizable OOM victim selection via BPF.
 
  - Allow source address selection with bpf_*_fib_lookup().
 
  - Add ability to pin BPF timer to the current CPU.
 
  - Prevent creation of infinite loops by combining tail calls and
    fentry/fexit programs.
 
  - Add missed stats for kprobes to retrieve the number of missed kprobe
    executions and subsequent executions of BPF programs.
 
  - Inherit system settings for CPU security mitigations.
 
  - Add BPF v4 CPU instruction support for arm32 and s390x.
 
 Changes to common code
 ----------------------
 
  - overflow: add DEFINE_FLEX() for on-stack definition of structs
    with flexible array members.
 
  - Process doc update with more guidance for reviewers.
 
 Driver API
 ----------
 
  - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
    mutex in most places and remove a lot of smaller locks.
 
  - Create a common DPLL configuration API. Allow configuring
    and querying state of PLL circuits used for clock syntonization,
    in network time distribution.
 
  - Unify fragmented and full page allocation APIs in page pool code.
    Let drivers be ignorant of PAGE_SIZE.
 
  - Rework PHY state machine to avoid races with calls to phy_stop().
 
  - Notify DSA drivers of MAC address changes on user ports, improve
    correctness of offloads which depend on matching port MAC addresses.
 
  - Allow antenna control on injected WiFi frames.
 
  - Reduce the number of variants of napi_schedule().
 
  - Simplify error handling when composing devlink health messages.
 
 Misc
 ----
 
  - A lot of KCSAN data race "fixes", from Eric.
 
  - A lot of __counted_by() annotations, from Kees.
 
  - A lot of strncpy -> strscpy and printf format fixes.
 
  - Replace master/slave terminology with conduit/user in DSA drivers.
 
  - Handful of KUnit tests for netdev and WiFi core.
 
 Removed
 -------
 
  - AppleTalk COPS.
 
  - AppleTalk ipddp.
 
  - TI AR7 CPMAC Ethernet driver.
 
 Drivers
 -------
 
  - Ethernet high-speed NICs:
    - Intel (100G, ice, idpf):
      - add a driver for the Intel E2000 IPUs
      - make CRC/FCS stripping configurable
      - cross-timestamping for E823 devices
      - basic support for E830 devices
      - use aux-bus for managing client drivers
      - i40e: report firmware versions via devlink
    - nVidia/Mellanox:
      - support 4-port NICs
      - increase max number of channels to 256
      - optimize / parallelize SF creation flow
    - Broadcom (bnxt):
      - enhance NIC temperature reporting
      - support PAM4 speeds and lane configuration
    - Marvell OcteonTX2:
      - PTP pulse-per-second output support
      - enable hardware timestamping for VFs
    - Solarflare/AMD:
      - conntrack NAT offload and offload for tunnels
    - Wangxun (ngbe/txgbe):
      - expose HW statistics
    - Pensando/AMD:
      - support PCI level reset
      - narrow down the condition under which skbs are linearized
    - Netronome/Corigine (nfp):
      - support CHACHA20-POLY1305 crypto in IPsec offload
 
  - Ethernet NICs embedded, slower, virtual:
    - Synopsys (stmmac):
      - add Loongson-1 SoC support
      - enable use of HW queues with no offload capabilities
      - enable PPS input support on all 5 channels
      - increase TX coalesce timer to 5ms
    - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
    - xen: support SW packet timestamping
    - add drivers for implementations based on TI's PRUSS (AM64x EVM)
 
  - nVidia/Mellanox Ethernet datacenter switches:
    - avoid poor HW resource use on Spectrum-4 by better block selection
      for IPv6 multicast forwarding and ordering of blocks in ACL region
 
  - Ethernet embedded switches:
    - Microchip:
      - support configuring the drive strength for EMI compliance
      - ksz9477: partial ACL support
      - ksz9477: HSR offload
      - ksz9477: Wake on LAN
    - Realtek:
      - rtl8366rb: respect device tree config of the CPU port
 
  - Ethernet PHYs:
    - support Broadcom BCM5221 PHYs
    - TI dp83867: support hardware LED blinking
 
  - CAN:
    - add support for Linux-PHY based CAN transceivers
    - at91_can: clean up and use rx-offload helpers
 
  - WiFi:
    - MediaTek (mt76):
      - new sub-driver for mt7925 USB/PCIe devices
      - HW wireless <> Ethernet bridging in MT7988 chips
      - mt7603/mt7628 stability improvements
    - Qualcomm (ath12k):
      - WCN7850:
        - enable 320 MHz channels in 6 GHz band
        - hardware rfkill support
        - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS
          to make scan faster
        - read board data variant name from SMBIOS
      - QCN9274: mesh support
    - RealTek (rtw89):
      - TDMA-based multi-channel concurrency (MCC)
    - Silicon Labs (wfx):
      - Remain-On-Channel (ROC) support
 
  - Bluetooth:
    - ISO: many improvements for broadcast support
    - mark BCM4378/BCM4387 as BROKEN_LE_CODED
    - add support for QCA2066
    - btmtksdio: enable Bluetooth wakeup from suspend
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support usec resolution of TCP timestamps, enabled selectively by a
     route attribute.

   - Defer regular TCP ACK while processing socket backlog, try to send
     a cumulative ACK at the end. Increase single TCP flow performance
     on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).

   - The Fair Queuing (FQ) packet scheduler:
       - add built-in 3 band prio / WRR scheduling
       - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
       - improve inactive flow reporting
       - optimize the layout of structures for better cache locality

   - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
     replacement for the old MD5 option.

   - Add more retransmission timeout (RTO) related statistics to
     TCP_INFO.

   - Support sending fragmented skbs over vsock sockets.

   - Make sure we send SIGPIPE for vsock sockets if socket was
     shutdown().

   - Add sysctl for ignoring lower limit on lifetime in Router
     Advertisement PIO, based on an in-progress IETF draft.

   - Add sysctl to control activation of TCP ping-pong mode.

   - Add sysctl to make connection timeout in MPTCP configurable.

   - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
     limit the number of wakeups.

   - Support netlink GET for MDB (multicast forwarding), allowing user
     space to request a single MDB entry instead of dumping the entire
     table.

   - Support selective FDB flushing in the VXLAN tunnel driver.

   - Allow limiting learned FDB entries in bridges, prevent OOM attacks.

   - Allow controlling via configfs netconsole targets which were
     created via the kernel cmdline at boot, rather than via configfs at
     runtime.

   - Support multiple PTP timestamp event queue readers with different
     filters.

   - MCTP over I3C.

  BPF:

   - Add new veth-like netdevice where BPF program defines the logic of
     the xmit routine. It can operate in L3 and L2 mode.

   - Support exceptions - allow asserting conditions which should never
     be true but are hard for the verifier to infer. With some extra
     flexibility around handling of the exit / failure:

          https://lwn.net/Articles/938435/

   - Add support for local per-cpu kptr, allow allocating and storing
     per-cpu objects in maps. Access to those objects operates on the
     value for the current CPU.

     This allows to deprecate local one-off implementations of per-CPU
     storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.

   - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
     for systemd to re-implement the LogNamespace feature which allows
     running multiple instances of systemd-journald to process the logs
     of different services.

   - Enable open-coded task_vma iteration, after maple tree conversion
     made it hard to directly walk VMAs in tracing programs.

   - Add open-coded task, css_task and css iterator support. One of the
     use cases is customizable OOM victim selection via BPF.

   - Allow source address selection with bpf_*_fib_lookup().

   - Add ability to pin BPF timer to the current CPU.

   - Prevent creation of infinite loops by combining tail calls and
     fentry/fexit programs.

   - Add missed stats for kprobes to retrieve the number of missed
     kprobe executions and subsequent executions of BPF programs.

   - Inherit system settings for CPU security mitigations.

   - Add BPF v4 CPU instruction support for arm32 and s390x.

  Changes to common code:

   - overflow: add DEFINE_FLEX() for on-stack definition of structs with
     flexible array members.

   - Process doc update with more guidance for reviewers.

  Driver API:

   - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
     mutex in most places and remove a lot of smaller locks.

   - Create a common DPLL configuration API. Allow configuring and
     querying state of PLL circuits used for clock syntonization, in
     network time distribution.

   - Unify fragmented and full page allocation APIs in page pool code.
     Let drivers be ignorant of PAGE_SIZE.

   - Rework PHY state machine to avoid races with calls to phy_stop().

   - Notify DSA drivers of MAC address changes on user ports, improve
     correctness of offloads which depend on matching port MAC
     addresses.

   - Allow antenna control on injected WiFi frames.

   - Reduce the number of variants of napi_schedule().

   - Simplify error handling when composing devlink health messages.

  Misc:

   - A lot of KCSAN data race "fixes", from Eric.

   - A lot of __counted_by() annotations, from Kees.

   - A lot of strncpy -> strscpy and printf format fixes.

   - Replace master/slave terminology with conduit/user in DSA drivers.

   - Handful of KUnit tests for netdev and WiFi core.

  Removed:

   - AppleTalk COPS.

   - AppleTalk ipddp.

   - TI AR7 CPMAC Ethernet driver.

  Drivers:

   - Ethernet high-speed NICs:
      - Intel (100G, ice, idpf):
         - add a driver for the Intel E2000 IPUs
         - make CRC/FCS stripping configurable
         - cross-timestamping for E823 devices
         - basic support for E830 devices
         - use aux-bus for managing client drivers
         - i40e: report firmware versions via devlink
      - nVidia/Mellanox:
         - support 4-port NICs
         - increase max number of channels to 256
         - optimize / parallelize SF creation flow
      - Broadcom (bnxt):
         - enhance NIC temperature reporting
         - support PAM4 speeds and lane configuration
      - Marvell OcteonTX2:
         - PTP pulse-per-second output support
         - enable hardware timestamping for VFs
      - Solarflare/AMD:
         - conntrack NAT offload and offload for tunnels
      - Wangxun (ngbe/txgbe):
         - expose HW statistics
      - Pensando/AMD:
         - support PCI level reset
         - narrow down the condition under which skbs are linearized
      - Netronome/Corigine (nfp):
         - support CHACHA20-POLY1305 crypto in IPsec offload

   - Ethernet NICs embedded, slower, virtual:
      - Synopsys (stmmac):
         - add Loongson-1 SoC support
         - enable use of HW queues with no offload capabilities
         - enable PPS input support on all 5 channels
         - increase TX coalesce timer to 5ms
      - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
      - xen: support SW packet timestamping
      - add drivers for implementations based on TI's PRUSS (AM64x EVM)

   - nVidia/Mellanox Ethernet datacenter switches:
      - avoid poor HW resource use on Spectrum-4 by better block
        selection for IPv6 multicast forwarding and ordering of blocks
        in ACL region

   - Ethernet embedded switches:
      - Microchip:
         - support configuring the drive strength for EMI compliance
         - ksz9477: partial ACL support
         - ksz9477: HSR offload
         - ksz9477: Wake on LAN
      - Realtek:
         - rtl8366rb: respect device tree config of the CPU port

   - Ethernet PHYs:
      - support Broadcom BCM5221 PHYs
      - TI dp83867: support hardware LED blinking

   - CAN:
      - add support for Linux-PHY based CAN transceivers
      - at91_can: clean up and use rx-offload helpers

   - WiFi:
      - MediaTek (mt76):
         - new sub-driver for mt7925 USB/PCIe devices
         - HW wireless <> Ethernet bridging in MT7988 chips
         - mt7603/mt7628 stability improvements
      - Qualcomm (ath12k):
         - WCN7850:
            - enable 320 MHz channels in 6 GHz band
            - hardware rfkill support
            - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
              make scan faster
            - read board data variant name from SMBIOS
        - QCN9274: mesh support
      - RealTek (rtw89):
         - TDMA-based multi-channel concurrency (MCC)
      - Silicon Labs (wfx):
         - Remain-On-Channel (ROC) support

   - Bluetooth:
      - ISO: many improvements for broadcast support
      - mark BCM4378/BCM4387 as BROKEN_LE_CODED
      - add support for QCA2066
      - btmtksdio: enable Bluetooth wakeup from suspend"

* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
  net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
  net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
  net: mana: Use xdp_set_features_flag instead of direct assignment
  vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
  iavf: delete the iavf client interface
  iavf: add a common function for undoing the interrupt scheme
  iavf: use unregister_netdev
  iavf: rely on netdev's own registered state
  iavf: fix the waiting time for initial reset
  iavf: in iavf_down, don't queue watchdog_task if comms failed
  iavf: simplify mutex_trylock+sleep loops
  iavf: fix comments about old bit locks
  doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
  tools: ynl: introduce option to process unknown attributes or types
  ipvlan: properly track tx_errors
  netdevsim: Block until all devices are released
  nfp: using napi_build_skb() to replace build_skb()
  net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
  net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
  net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
  ...
 2023-10-31 05:10:11 -10:00
Linus Torvalds
c891e98ab3 Updates for SMP and CPU hotplug: 
- Switch the smp_call_function*() @csd argument to call_single_data_t
     type, which is a cache-line aligned typedef of the underlying struct
     __call_single_data.
 
     This ensures that the call data is not crossing a cacheline which
     avoids bouncing an extra cache-line for the SMP function call
 
   - Prevent offlining of the last housekeeping CPU when CPU isolation is
     active.
 
     Offlining the last housekeeping CPU makes no sense in general, but also
     caused the scheduler to panic due to the empty CPU mask when rebuilding
     the scheduler domains.
 
   - Remove an unused CPU hotplug state
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Merge tag 'smp-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull SMP and CPU hotplug updates from Thomas Gleixner:

 - Switch the smp_call_function*() @csd argument to call_single_data_t
   type, which is a cache-line aligned typedef of the underlying struct
   __call_single_data.

   This ensures that the call data is not crossing a cacheline which
   avoids bouncing an extra cache-line for the SMP function call

 - Prevent offlining of the last housekeeping CPU when CPU isolation is
   active.

   Offlining the last housekeeping CPU makes no sense in general, but
   also caused the scheduler to panic due to the empty CPU mask when
   rebuilding the scheduler domains.

 - Remove an unused CPU hotplug state

* tag 'smp-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Don't offline the last non-isolated CPU
  cpu/hotplug: Remove unused cpuhp_state CPUHP_AP_X86_VDSO_VMA_ONLINE
  smp: Change function signatures to use call_single_data_t
 2023-10-30 17:12:36 -10:00
Linus Torvalds
63ce50fff9 Scheduler changes for v6.7 are: 
- Fair scheduler (SCHED_OTHER) improvements:
 
     - Remove the old and now unused SIS_PROP code & option
     - Scan cluster before LLC in the wake-up path
     - Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
 
  - NUMA scheduling improvements:
 
     - Improve the VMA access-PID code to better skip/scan VMAs
     - Extend tracing to cover VMA-skipping decisions
     - Improve/fix the recently introduced sched_numa_find_nth_cpu() code
     - Generalize numa_map_to_online_node()
 
  - Energy scheduling improvements:
 
     - Remove the EM_MAX_COMPLEXITY limit
     - Add tracepoints to track energy computation
     - Make the behavior of the 'sched_energy_aware' sysctl more consistent
     - Consolidate and clean up access to a CPU's max compute capacity
     - Fix uclamp code corner cases
 
  - RT scheduling improvements:
 
     - Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
     - Drive the ->rto_mask with rt_rq->pushable_tasks updates
 
  - Scheduler scalability improvements:
 
     - Rate-limit updates to tg->load_avg
     - On x86 disable IBRS when CPU is offline to improve single-threaded performance
     - Micro-optimize in_task() and in_interrupt()
     - Micro-optimize the PSI code
     - Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
 
  - Core scheduler infrastructure improvements:
 
     - Use saved_state to reduce some spurious freezer wakeups
     - Bring in a handful of fast-headers improvements to scheduler headers
     - Make the scheduler UAPI headers more widely usable by user-space
     - Simplify the control flow of scheduler syscalls by using lock guards
     - Fix sched_setaffinity() vs. CPU hotplug race
 
  - Scheduler debuggability improvements:
     - Disallow writing invalid values to sched_rt_period_us
     - Fix a race in the rq-clock debugging code triggering warnings
     - Fix a warning in the bandwidth distribution code
     - Micro-optimize in_atomic_preempt_off() checks
     - Enforce that the tasklist_lock is held in for_each_thread()
     - Print the TGID in sched_show_task()
     - Remove the /proc/sys/kernel/sched_child_runs_first sysctl
 
  - Misc cleanups & fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "Fair scheduler (SCHED_OTHER) improvements:
   - Remove the old and now unused SIS_PROP code & option
   - Scan cluster before LLC in the wake-up path
   - Use candidate prev/recent_used CPU if scanning failed for cluster
     wakeup

  NUMA scheduling improvements:
   - Improve the VMA access-PID code to better skip/scan VMAs
   - Extend tracing to cover VMA-skipping decisions
   - Improve/fix the recently introduced sched_numa_find_nth_cpu() code
   - Generalize numa_map_to_online_node()

  Energy scheduling improvements:
   - Remove the EM_MAX_COMPLEXITY limit
   - Add tracepoints to track energy computation
   - Make the behavior of the 'sched_energy_aware' sysctl more
     consistent
   - Consolidate and clean up access to a CPU's max compute capacity
   - Fix uclamp code corner cases

  RT scheduling improvements:
   - Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
   - Drive the ->rto_mask with rt_rq->pushable_tasks updates

  Scheduler scalability improvements:
   - Rate-limit updates to tg->load_avg
   - On x86 disable IBRS when CPU is offline to improve single-threaded
     performance
   - Micro-optimize in_task() and in_interrupt()
   - Micro-optimize the PSI code
   - Avoid updating PSI triggers and ->rtpoll_total when there are no
     state changes

  Core scheduler infrastructure improvements:
   - Use saved_state to reduce some spurious freezer wakeups
   - Bring in a handful of fast-headers improvements to scheduler
     headers
   - Make the scheduler UAPI headers more widely usable by user-space
   - Simplify the control flow of scheduler syscalls by using lock
     guards
   - Fix sched_setaffinity() vs. CPU hotplug race

  Scheduler debuggability improvements:
   - Disallow writing invalid values to sched_rt_period_us
   - Fix a race in the rq-clock debugging code triggering warnings
   - Fix a warning in the bandwidth distribution code
   - Micro-optimize in_atomic_preempt_off() checks
   - Enforce that the tasklist_lock is held in for_each_thread()
   - Print the TGID in sched_show_task()
   - Remove the /proc/sys/kernel/sched_child_runs_first sysctl

  ... and misc cleanups & fixes"

* tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (82 commits)
  sched/fair: Remove SIS_PROP
  sched/fair: Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
  sched/fair: Scan cluster before scanning LLC in wake-up path
  sched: Add cpus_share_resources API
  sched/core: Fix RQCF_ACT_SKIP leak
  sched/fair: Remove unused 'curr' argument from pick_next_entity()
  sched/nohz: Update comments about NEWILB_KICK
  sched/fair: Remove duplicate #include
  sched/psi: Update poll => rtpoll in relevant comments
  sched: Make PELT acronym definition searchable
  sched: Fix stop_one_cpu_nowait() vs hotplug
  sched/psi: Bail out early from irq time accounting
  sched/topology: Rename 'DIE' domain to 'PKG'
  sched/psi: Delete the 'update_total' function parameter from update_triggers()
  sched/psi: Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
  sched/headers: Remove comment referring to rq::cpu_load, since this has been removed
  sched/numa: Complete scanning of inactive VMAs when there is no alternative
  sched/numa: Complete scanning of partial VMAs regardless of PID activity
  sched/numa: Move up the access pid reset logic
  sched/numa: Trace decisions related to skipping VMAs
  ...
 2023-10-30 13:12:15 -10:00
Linus Torvalds
d5acbc60fa for-6.7-tag 
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Merge tag 'for-6.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "New features:

   - raid-stripe-tree

     New tree for logical file extent mapping where the physical mapping
     may not match on multiple devices. This is now used in zoned mode
     to implement RAID0/RAID1* profiles, but can be used in non-zoned
     mode as well. The support for RAID56 is in development and will
     eventually fix the problems with the current implementation. This
     is a backward incompatible feature and has to be enabled at mkfs
     time.

   - simple quota accounting (squota)

     A simplified mode of qgroup that accounts all space on the initial
     extent owners (a subvolume), the snapshots are then cheap to create
     and delete. The deletion of snapshots in fully accounting qgroups
     is a known CPU/IO performance bottleneck.

     The squota is not suitable for the general use case but works well
     for containers where the original subvolume exists for the whole
     time. This is a backward incompatible feature as it needs extending
     some structures, but can be enabled on an existing filesystem.

   - temporary filesystem fsid (temp_fsid)

     The fsid identifies a filesystem and is hard coded in the
     structures, which disallows mounting the same fsid found on
     different devices.

     For a single device filesystem this is not strictly necessary, a
     new temporary fsid can be generated on mount e.g. after a device is
     cloned. This will be used by Steam Deck for root partition A/B
     testing, or can be used for VM root images.

  Other user visible changes:

   - filesystems with partially finished metadata_uuid conversion cannot
     be mounted anymore and the uuid fixup has to be done by btrfs-progs
     (btrfstune).

  Performance improvements:

   - reduce reservations for checksum deletions (with enabled free space
     tree by factor of 4), on a sample workload on file with many
     extents the deletion time decreased by 12%

   - make extent state merges more efficient during insertions, reduce
     rb-tree iterations (run time of critical functions reduced by 5%)

  Core changes:

   - the integrity check functionality has been removed, this was a
     debugging feature and removal does not affect other integrity
     checks like checksums or tree-checker

   - space reservation changes:

      - more efficient delayed ref reservations, this avoids building up
        too much work or overusing or exhausting the global block
        reserve in some situations

      - move delayed refs reservation to the transaction start time,
        this prevents some ENOSPC corner cases related to exhaustion of
        global reserve

      - improvements in reducing excessive reservations for block group
        items

      - adjust overcommit logic in near full situations, account for one
        more chunk to eventually allocate metadata chunk, this is mostly
        relevant for small filesystems (<10GiB)

   - single device filesystems are scanned but not registered (except
     seed devices), this allows temp_fsid to work

   - qgroup iterations do not need GFP_ATOMIC allocations anymore

   - cleanups, refactoring, reduced data structure size, function
     parameter simplifications, error handling fixes"

* tag 'for-6.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (156 commits)
  btrfs: open code timespec64 in struct btrfs_inode
  btrfs: remove redundant log root tree index assignment during log sync
  btrfs: remove redundant initialization of variable dirty in btrfs_update_time()
  btrfs: sysfs: show temp_fsid feature
  btrfs: disable the device add feature for temp-fsid
  btrfs: disable the seed feature for temp-fsid
  btrfs: update comment for temp-fsid, fsid, and metadata_uuid
  btrfs: remove pointless empty log context list check when syncing log
  btrfs: update comment for struct btrfs_inode::lock
  btrfs: remove pointless barrier from btrfs_sync_file()
  btrfs: add and use helpers for reading and writing last_trans_committed
  btrfs: add and use helpers for reading and writing fs_info->generation
  btrfs: add and use helpers for reading and writing log_transid
  btrfs: add and use helpers for reading and writing last_log_commit
  btrfs: support cloned-device mount capability
  btrfs: add helper function find_fsid_by_disk
  btrfs: stop reserving excessive space for block group item insertions
  btrfs: stop reserving excessive space for block group item updates
  btrfs: reorder btrfs_inode to fill gaps
  btrfs: open code btrfs_ordered_inode_tree in btrfs_inode
  ...
 2023-10-30 10:42:06 -10:00
Linus Torvalds
8b16da681e NFSD 6.7 Release Notes 
This release completes the SunRPC thread scheduler work that was
 begun in v6.6. The scheduler can now find an svc thread to wake in
 constant time and without a list walk. Thanks again to Neil Brown
 for this overhaul.
 
 Lorenzo Bianconi contributed infrastructure for a netlink-based
 NFSD control plane. The long-term plan is to provide the same
 functionality as found in /proc/fs/nfsd, plus some interesting
 additions, and then migrate the NFSD user space utilities to
 netlink.
 
 A long series to overhaul NFSD's NFSv4 operation encoding was
 applied in this release. The goals are to bring this family of
 encoding functions in line with the matching NFSv4 decoding
 functions and with the NFSv2 and NFSv3 XDR functions, preparing
 the way for better memory safety and maintainability.
 
 A further improvement to NFSD's write delegation support was
 contributed by Dai Ngo. This adds a CB_GETATTR callback,
 enabling the server to retrieve cached size and mtime data from
 clients holding write delegations. If the server can retrieve
 this information, it does not have to recall the delegation in
 some cases.
 
 The usual panoply of bug fixes and minor improvements round out
 this release. As always I am grateful to all contributors,
 reviewers, and testers.
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Merge tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "This release completes the SunRPC thread scheduler work that was begun
  in v6.6. The scheduler can now find an svc thread to wake in constant
  time and without a list walk. Thanks again to Neil Brown for this
  overhaul.

  Lorenzo Bianconi contributed infrastructure for a netlink-based NFSD
  control plane. The long-term plan is to provide the same functionality
  as found in /proc/fs/nfsd, plus some interesting additions, and then
  migrate the NFSD user space utilities to netlink.

  A long series to overhaul NFSD's NFSv4 operation encoding was applied
  in this release. The goals are to bring this family of encoding
  functions in line with the matching NFSv4 decoding functions and with
  the NFSv2 and NFSv3 XDR functions, preparing the way for better memory
  safety and maintainability.

  A further improvement to NFSD's write delegation support was
  contributed by Dai Ngo. This adds a CB_GETATTR callback, enabling the
  server to retrieve cached size and mtime data from clients holding
  write delegations. If the server can retrieve this information, it
  does not have to recall the delegation in some cases.

  The usual panoply of bug fixes and minor improvements round out this
  release. As always I am grateful to all contributors, reviewers, and
  testers"

* tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (127 commits)
  svcrdma: Fix tracepoint printk format
  svcrdma: Drop connection after an RDMA Read error
  NFSD: clean up alloc_init_deleg()
  NFSD: Fix frame size warning in svc_export_parse()
  NFSD: Rewrite synopsis of nfsd_percpu_counters_init()
  nfsd: Clean up errors in nfs3proc.c
  nfsd: Clean up errors in nfs4state.c
  NFSD: Clean up errors in stats.c
  NFSD: simplify error paths in nfsd_svc()
  NFSD: Clean up nfsd4_encode_seek()
  NFSD: Clean up nfsd4_encode_offset_status()
  NFSD: Clean up nfsd4_encode_copy_notify()
  NFSD: Clean up nfsd4_encode_copy()
  NFSD: Clean up nfsd4_encode_test_stateid()
  NFSD: Clean up nfsd4_encode_exchange_id()
  NFSD: Clean up nfsd4_do_encode_secinfo()
  NFSD: Clean up nfsd4_encode_access()
  NFSD: Clean up nfsd4_encode_readdir()
  NFSD: Clean up nfsd4_encode_entry4()
  NFSD: Add an nfsd4_encode_nfs_cookie4() helper
  ...
 2023-10-30 10:12:29 -10:00
Zi Yan
49cac03a8f mm/migrate: add nr_split to trace_mm_migrate_pages stats. 
Add nr_split to trace_mm_migrate_pages for large folio (including THP)
split events.

[akpm@linux-foundation.org: cleanup per Huang, Ying]
Link: https://lkml.kernel.org/r/20231017163129.2025214-2-zi.yan@sent.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-10-25 16:47:13 -07:00
Ingo Molnar
4e5b65a22b Linux 6.6-rc7 
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Merge tag 'v6.6-rc7' into sched/core, to pick up fixes

Pick up recent sched/urgent fixes merged upstream.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2023-10-23 11:32:25 +02:00
Dave Airlie
7cd62eab9b Linux 6.6-rc7 
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BackMerge tag 'v6.6-rc7' into drm-next

This is needed to add the msm pr which is based on a higher base.

Signed-off-by: Dave Airlie <airlied@redhat.com>
 2023-10-23 18:20:06 +10:00
Jakub Kicinski
041c3466f3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR.

net/mac80211/key.c
  02e0e426a2 ("wifi: mac80211: fix error path key leak")
  2a8b665e6b ("wifi: mac80211: remove key_mtx")
  7d6904bf26 ("Merge wireless into wireless-next")
https://lore.kernel.org/all/20231012113648.46eea5ec@canb.auug.org.au/

Adjacent changes:

drivers/net/ethernet/ti/Kconfig
  a602ee3176 ("net: ethernet: ti: Fix mixed module-builtin object")
  98bdeae950 ("net: cpmac: remove driver to prepare for platform removal")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2023-10-19 13:29:01 -07:00
Geert Uytterhoeven
2915240edd neighbor: tracing: Move pin6 inside CONFIG_IPV6=y section 
When CONFIG_IPV6=n, and building with W=1:

    In file included from include/trace/define_trace.h:102,
		     from include/trace/events/neigh.h:255,
		     from net/core/net-traces.c:51:
    include/trace/events/neigh.h: In function ‘trace_event_raw_event_neigh_create’:
    include/trace/events/neigh.h:42:34: error: variable ‘pin6’ set but not used [-Werror=unused-but-set-variable]
       42 |                 struct in6_addr *pin6;
	  |                                  ^~~~
    include/trace/trace_events.h:402:11: note: in definition of macro ‘DECLARE_EVENT_CLASS’
      402 |         { assign; }                                                     \
	  |           ^~~~~~
    include/trace/trace_events.h:44:30: note: in expansion of macro ‘PARAMS’
       44 |                              PARAMS(assign),                   \
	  |                              ^~~~~~
    include/trace/events/neigh.h:23:1: note: in expansion of macro ‘TRACE_EVENT’
       23 | TRACE_EVENT(neigh_create,
	  | ^~~~~~~~~~~
    include/trace/events/neigh.h:41:9: note: in expansion of macro ‘TP_fast_assign’
       41 |         TP_fast_assign(
	  |         ^~~~~~~~~~~~~~
    In file included from include/trace/define_trace.h:103,
		     from include/trace/events/neigh.h:255,
		     from net/core/net-traces.c:51:
    include/trace/events/neigh.h: In function ‘perf_trace_neigh_create’:
    include/trace/events/neigh.h:42:34: error: variable ‘pin6’ set but not used [-Werror=unused-but-set-variable]
       42 |                 struct in6_addr *pin6;
	  |                                  ^~~~
    include/trace/perf.h:51:11: note: in definition of macro ‘DECLARE_EVENT_CLASS’
       51 |         { assign; }                                                     \
	  |           ^~~~~~
    include/trace/trace_events.h:44:30: note: in expansion of macro ‘PARAMS’
       44 |                              PARAMS(assign),                   \
	  |                              ^~~~~~
    include/trace/events/neigh.h:23:1: note: in expansion of macro ‘TRACE_EVENT’
       23 | TRACE_EVENT(neigh_create,
	  | ^~~~~~~~~~~
    include/trace/events/neigh.h:41:9: note: in expansion of macro ‘TP_fast_assign’
       41 |         TP_fast_assign(
	  |         ^~~~~~~~~~~~~~

Indeed, the variable pin6 is declared and initialized unconditionally,
while it is only used and needlessly re-initialized when support for
IPv6 is enabled.

Fix this by dropping the unused variable initialization, and moving the
variable declaration inside the existing section protected by a check
for CONFIG_IPV6.

Fixes: fc651001d2 ("neighbor: Add tracepoint to __neigh_create")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org> # build-tested
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2023-10-18 11:16:43 +01:00
Thomas Gleixner
a940daa521 Merge branch 'linus' into smp/core 
Pull in upstream to get the fixes so depending changes can be applied.
 2023-10-17 21:40:46 +02:00
Chuck Lever
3fd2ca5be0 svcrdma: Fix tracepoint printk format 
Other tracepoints use "cq.id=" rather than "cq_id=". Let's make it
more reliable to grep for the CQ restracker ID.

Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2023-10-16 12:44:40 -04:00
NeilBrown
5ff817b235 SUNRPC: add list of idle threads 
Rather than searching a list of threads to find an idle one, having a
list of idle threads allows an idle thread to be found immediately.

This adds some spin_lock calls which is not ideal, but as the hold-time
is tiny it is still faster than searching a list.  A future patch will
remove them using llist.h.  This involves some subtlety and so is left
to a separate patch.

This removes the need for the RQ_BUSY flag.  The rqst is "busy"
precisely when it is not on the "idle" list.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2023-10-16 12:44:04 -04:00
David Sterba
078b8b90b8 btrfs: merge ordered work callbacks in btrfs_work into one 
There are two callbacks defined in btrfs_work but only two actually make
use of them, otherwise there are NULLs. We can get rid of the freeing
callback making it a special case of the normal work. This reduces the
size of btrfs_work by 8 bytes, final layout:

struct btrfs_work {
        btrfs_func_t               func;                 /*     0     8 */
        btrfs_ordered_func_t       ordered_func;         /*     8     8 */
        struct work_struct         normal_work;          /*    16    32 */
        struct list_head           ordered_list;         /*    48    16 */
        /* --- cacheline 1 boundary (64 bytes) --- */
        struct btrfs_workqueue *   wq;                   /*    64     8 */
        long unsigned int          flags;                /*    72     8 */

        /* size: 80, cachelines: 2, members: 6 */
        /* last cacheline: 16 bytes */
};

This in turn reduces size of other structures (on a release config):

- async_chunk			 160 ->  152
- async_submit_bio		 152 ->  144
- btrfs_async_delayed_work	 104 ->   96
- btrfs_caching_control		 176 ->  168
- btrfs_delalloc_work		 144 ->  136
- btrfs_fs_info			3608 -> 3600
- btrfs_ordered_extent		 440 ->  424
- btrfs_writepage_fixup		 104 ->   96

Signed-off-by: David Sterba <dsterba@suse.com>
 2023-10-12 16:44:10 +02:00
Johannes Thumshirn
b5e2c2ff67 btrfs: tracepoints: add events for raid stripe tree 
Add trace events for raid-stripe-tree operations.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2023-10-12 16:44:10 +02:00
Mel Gorman
f169c62ff7 sched/numa: Complete scanning of inactive VMAs when there is no alternative 
VMAs are skipped if there is no recent fault activity but this represents
a chicken-and-egg problem as there may be no fault activity if the PTEs
are never updated to trap NUMA hints. There is an indirect reliance on
scanning to be forced early in the lifetime of a task but this may fail
to detect changes in phase behaviour. Force inactive VMAs to be scanned
when all other eligible VMAs have been updated within the same scan
sequence.

Test results in general look good with some changes in performance, both
negative and positive, depending on whether the additional scanning and
faulting was beneficial or not to the workload. The autonuma benchmark
workload NUMA01_THREADLOCAL was picked for closer examination. The workload
creates two processes with numerous threads and thread-local storage that
is zero-filled in a loop. It exercises the corner case where unrelated
threads may skip VMAs that are thread-local to another thread and still
has some VMAs that inactive while the workload executes.

The VMA skipping activity frequency with and without the patch:

	6.6.0-rc2-sched-numabtrace-v1
	=============================
	    649 reason=scan_delay
	  9,094 reason=unsuitable
	 48,915 reason=shared_ro
	143,919 reason=inaccessible
	193,050 reason=pid_inactive

	6.6.0-rc2-sched-numabselective-v1
	=============================
	    146 reason=seq_completed
	    622 reason=ignore_pid_inactive

	    624 reason=scan_delay
	  6,570 reason=unsuitable
	 16,101 reason=shared_ro
	 27,608 reason=inaccessible
	 41,939 reason=pid_inactive

Note that with the patch applied, the PID activity is ignored
(ignore_pid_inactive) to ensure a VMA with some activity is completely
scanned. In addition, a small number of VMAs are scanned when no other
eligible VMA is available during a single scan window (seq_completed).
The number of times a VMA is skipped due to no PID activity from the
scanning task (pid_inactive) drops dramatically. It is expected that
this will increase the number of PTEs updated for NUMA hinting faults
as well as hinting faults but these represent PTEs that would otherwise
have been missed. The tradeoff is scan+fault overhead versus improving
locality due to migration.

On a 2-socket Cascade Lake test machine, the time to complete the
workload is as follows;

                                                 6.6.0-rc2              6.6.0-rc2
                                       sched-numabtrace-v1 sched-numabselective-v1
  Min       elsp-NUMA01_THREADLOCAL      174.22 (   0.00%)      117.64 (  32.48%)
  Amean     elsp-NUMA01_THREADLOCAL      175.68 (   0.00%)      123.34 *  29.79%*
  Stddev    elsp-NUMA01_THREADLOCAL        1.20 (   0.00%)        4.06 (-238.20%)
  CoeffVar  elsp-NUMA01_THREADLOCAL        0.68 (   0.00%)        3.29 (-381.70%)
  Max       elsp-NUMA01_THREADLOCAL      177.18 (   0.00%)      128.03 (  27.74%)

The time to complete the workload is reduced by almost 30%:

                     6.6.0-rc2   6.6.0-rc2
                  sched-numabtrace-v1 sched-numabselective-v1 /
  Duration User       91201.80    63506.64
  Duration System      2015.53     1819.78
  Duration Elapsed     1234.77      868.37

In this specific case, system CPU time was not increased but it's not
universally true.

From vmstat, the NUMA scanning and fault activity is as follows;

                                        6.6.0-rc2      6.6.0-rc2
                              sched-numabtrace-v1 sched-numabselective-v1
  Ops NUMA base-page range updates       64272.00    26374386.00
  Ops NUMA PTE updates                   36624.00       55538.00
  Ops NUMA PMD updates                      54.00       51404.00
  Ops NUMA hint faults                   15504.00       75786.00
  Ops NUMA hint local faults %           14860.00       56763.00
  Ops NUMA hint local percent               95.85          74.90
  Ops NUMA pages migrated                 1629.00     6469222.00

Both the number of PTE updates and hint faults is dramatically
increased. While this is superficially unfortunate, it represents
ranges that were simply skipped without the patch. As a result
of the scanning and hinting faults, many more pages were also
migrated but as the time to completion is reduced, the overhead
is offset by the gain.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Raghavendra K T <raghavendra.kt@amd.com>
Link: https://lore.kernel.org/r/20231010083143.19593-7-mgorman@techsingularity.net
 2023-10-10 23:42:15 +02:00
Mel Gorman
b7a5b537c5 sched/numa: Complete scanning of partial VMAs regardless of PID activity 
NUMA Balancing skips VMAs when the current task has not trapped a NUMA
fault within the VMA. If the VMA is skipped then mm->numa_scan_offset
advances and a task that is trapping faults within the VMA may never
fully update PTEs within the VMA.

Force tasks to update PTEs for partially scanned PTEs. The VMA will
be tagged for NUMA hints by some task but this removes some of the
benefit of tracking PID activity within a VMA. A follow-on patch
will mitigate this problem.

The test cases and machines evaluated did not trigger the corner case so
the performance results are neutral with only small changes within the
noise from normal test-to-test variance. However, the next patch makes
the corner case easier to trigger.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Raghavendra K T <raghavendra.kt@amd.com>
Link: https://lore.kernel.org/r/20231010083143.19593-6-mgorman@techsingularity.net
 2023-10-10 23:41:47 +02:00
Mel Gorman
ed2da8b725 sched/numa: Trace decisions related to skipping VMAs 
NUMA balancing skips or scans VMAs for a variety of reasons. In preparation
for completing scans of VMAs regardless of PID access, trace the reasons
why a VMA was skipped. In a later patch, the tracing will be used to track
if a VMA was forcibly scanned.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231010083143.19593-4-mgorman@techsingularity.net
 2023-10-10 11:10:00 +02:00
Oded Gabbay
a43557dcd4 accel/habanalabs: minor cosmetics update to trace file 
- Update copyright years
- Add missing newline at end of file

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Reviewed-by: Ofir Bitton <obitton@habana.ai>
 2023-10-09 12:37:23 +03:00
Ohad Sharabi
309ed96903 accel/habanalabs: add traces for dma mappings 
In order to get a full picture of DMA mappings (e.g. to track DMAR
errors), DMA mappings APIs should be covered.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-10-09 12:37:23 +03:00
Ingo Molnar
8db30574db Merge branch 'sched/urgent' into sched/core, to pick up fixes and refresh the branch 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2023-10-07 11:32:24 +02:00
Jithu Joseph
72b96ee29e
platform/x86/intel/ifs: Gen2 Scan test support 
Width of chunk related bitfields is ACTIVATE_SCAN and SCAN_STATUS MSRs
are different in newer IFS generation compared to gen0.

Make changes to scan test flow such that MSRs are populated
appropriately based on the generation supported by hardware.

Account for the 8/16 bit MSR bitfield width differences between gen0 and
newer generations for the scan test trace event too.

Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Link: https://lore.kernel.org/r/20231005195137.3117166-5-jithu.joseph@intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
 2023-10-06 13:05:18 +03:00
SeongJae Park
a72217ad59 mm/damon/core: use nr_accesses_bp as a source of damos_before_apply tracepoint 
damos_before_apply tracepoint is exposing access rate of DAMON regions
using nr_accesses field of regions, which was actually used by DAMOS in
the past.  However, it has changed to use nr_accesses_bp instead.  Update
the tracepoint to expose the value that DAMOS is really using.

Note that it doesn't expose the value as is in the basis point, but after
converting it to the natural number by dividing it by 10,000.  Therefore
this change doesn't make user-visible behavioral differences.

Link: https://lkml.kernel.org/r/20230916020945.47296-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-10-04 10:32:31 -07:00
Vlastimil Babka
3dfbb555c9 mm, vmscan: remove ISOLATE_UNMAPPED 
This isolate_mode_t flag is effectively unused since 89f6c88a6a ("mm:
__isolate_lru_page_prepare() in isolate_migratepages_block()") as
sc->may_unmap is now checked directly (and only node_reclaim has a mode
that sets it to 0).  The last remaining place is mm_vmscan_lru_isolate
tracepoint for the isolate_mode parameter.  That one was mainly used to
indicate the active/inactive mode, which the trace-vmscan-postprocess.pl
script consumed, but that got silently broken.  After fixing the script by
the previous patch, it does not need the isolate_mode anymore.  So just
remove the parameter and with that the whole ISOLATE_UNMAPPED flag.

Link: https://lkml.kernel.org/r/20230914131637.12204-4-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-10-04 10:32:29 -07:00
SeongJae Park
c603c630b5 mm/damon/core: add a tracepoint for damos apply target regions 
Patch series "mm/damon: add a tracepoint for damos apply target regions",
v2.

DAMON provides damon_aggregated tracepoint to let users record full
monitoring results.  Sometimes, users need to record monitoring results of
specific pattern.  DAMOS tried regions directory of DAMON sysfs interface
allows it, but the interface is mainly designed for snapshots and
therefore would be inefficient for such recording.  Implement yet another
tracepoint for efficient support of the usecase.


This patch (of 2):

DAMON provides damon_aggregated tracepoint, which exposes details of each
region and its access monitoring results.  It is useful for getting whole
monitoring results, e.g., for recording purposes.

For investigations of DAMOS, DAMON Sysfs interface provides DAMOS
statistics and tried_regions directory.  But, those provides only
statistics and snapshots.  If the scheme is frequently applied and if the
user needs to know every detail of DAMOS behavior, the snapshot-based
interface could be insufficient and expensive.

As a last resort, userspace users need to record the all monitoring
results via damon_aggregated tracepoint and simulate how DAMOS would
worked.  It is unnecessarily complicated.  DAMON kernel API users,
meanwhile, can do that easily via before_damos_apply() callback field of
'struct damon_callback', though.

Add a tracepoint that will be called just after before_damos_apply()
callback for more convenient investigations of DAMOS.  The tracepoint
exposes all details about each regions, similar to damon_aggregated
tracepoint.

Please note that DAMOS is currently not only for memory management but
also for query-like efficient monitoring results retrievals (when 'stat'
action is used).  Until now, only statistics or snapshots were supported. 
Addition of this tracepoint allows efficient full recording of DAMOS-based
filtered monitoring results.

Link: https://lkml.kernel.org/r/20230913022050.2109-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20230913022050.2109-2-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>	[tracing]
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-10-04 10:32:28 -07:00
SeongJae Park
2d00946bd7 mm/damon/core: remove 'struct target *' parameter from damon_aggregated tracepoint 
damon_aggregateed tracepoint is receiving 'struct target *', but doesn't
use it.  Remove it from the prototype.

Link: https://lkml.kernel.org/r/20230907022929.91361-12-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2023-10-04 10:32:21 -07:00
Eric Dumazet
28b24f9002 net: implement lockless SO_MAX_PACING_RATE 
SO_MAX_PACING_RATE setsockopt() does not need to hold
the socket lock, because sk->sk_pacing_rate readers
can run fine if the value is changed by other threads,
after adding READ_ONCE() accessors.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2023-10-01 19:09:54 +01:00
Qais Yousef
15874a3d27 sched/debug: Add new tracepoint to track compute energy computation 
It was useful to track feec() placement decision and debug the spare
capacity and optimization issues vs uclamp_max.

Signed-off-by: Qais Yousef (Google) <qyousef@layalina.io>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230916232955.2099394-4-qyousef@layalina.io
 2023-09-29 10:29:18 +02:00
Paolo Abeni
e9cbc89067 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Cross-merge networking fixes after downstream PR.

No conflicts.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2023-09-21 21:49:45 +02:00
Arseniy Krasnov
581512a6dc vsock/virtio: MSG_ZEROCOPY flag support 
This adds handling of MSG_ZEROCOPY flag on transmission path:

1) If this flag is set and zerocopy transmission is possible (enabled
   in socket options and transport allows zerocopy), then non-linear
   skb will be created and filled with the pages of user's buffer.
   Pages of user's buffer are locked in memory by 'get_user_pages()'.
2) Replaces way of skb owning: instead of 'skb_set_owner_sk_safe()' it
   calls 'skb_set_owner_w()'. Reason of this change is that
   '__zerocopy_sg_from_iter()' increments 'sk_wmem_alloc' of socket, so
   to decrease this field correctly, proper skb destructor is needed:
   'sock_wfree()'. This destructor is set by 'skb_set_owner_w()'.
3) Adds new callback to 'struct virtio_transport': 'can_msgzerocopy'.
   If this callback is set, then transport needs extra check to be able
   to send provided number of buffers in zerocopy mode. Currently, the
   only transport that needs this callback set is virtio, because this
   transport adds new buffers to the virtio queue and we need to check,
   that number of these buffers is less than size of the queue (it is
   required by virtio spec). vhost and loopback transports don't need
   this check.

Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 2023-09-21 12:34:00 +02:00
Juergen Gross
a4a7644c15 x86/xen: move paravirt lazy code 
Only Xen is using the paravirt lazy mode code, so it can be moved to
Xen specific sources.

This allows to make some of the functions static or to merge them into
their only call sites.

While at it do a rename from "paravirt" to "xen" for all moved
specifiers.

No functional change.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20230913113828.18421-3-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
 2023-09-19 07:04:49 +02:00
Bart Van Assche
ccc3e13630 scsi: ufs: core: Include the SCSI ID in UFS command tracing output 
The logical unit information is missing from the UFS command tracing
output. Although the device name is logged, e.g. 13200000.ufs, this name
does not include logical unit information. Hence this patch that replaces
the device name with the SCSI ID in the tracing output. An example of
tracing output with this patch applied:

    kworker/8:0H-80      [008] .....    89.106063: ufshcd_command: send_req: 0:0:0:4: tag: 10, DB: 0x7ffffbff, size: 524288, IS: 0, LBA: 1085538, opcode: 0x8a (WRITE_16), group_id: 0x0
              dd-4225    [000] d.h..    89.106219: ufshcd_command: complete_rsp: 0:0:0:4: tag: 11, DB: 0x7ffff7ff, size: 524288, IS: 0, LBA: 1081728, opcode: 0x8a (WRITE_16), group_id: 0x0

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230907183739.905938-1-bvanassche@acm.org
Reviewed-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2023-09-13 20:44:59 -04:00
Leonardo Bras
d090ec0df8 smp: Change function signatures to use call_single_data_t 
call_single_data_t is a size-aligned typedef of struct __call_single_data.

This alignment is desirable in order to have smp_call_function*() avoid
bouncing an extra cacheline in case of an unaligned csd, given this
would hurt performance.

Since the removal of struct request->csd in commit 660e802c76
("blk-mq: use percpu csd to remote complete instead of per-rq csd") there
are no current users of smp_call_function*() with unaligned csd.

Change every 'struct __call_single_data' function parameter to
'call_single_data_t', so we have warnings if any new code tries to
introduce an smp_call_function*() call with unaligned csd.

Signed-off-by: Leonardo Bras <leobras@redhat.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230831063129.335425-1-leobras@redhat.com
 2023-09-13 14:59:24 +02:00
Ard Biesheuvel
cf8e865810 arch: Remove Itanium (IA-64) architecture 
The Itanium architecture is obsolete, and an informal survey [0] reveals
that any residual use of Itanium hardware in production is mostly HP-UX
or OpenVMS based. The use of Linux on Itanium appears to be limited to
enthusiasts that occasionally boot a fresh Linux kernel to see whether
things are still working as intended, and perhaps to churn out some
distro packages that are rarely used in practice.

None of the original companies behind Itanium still produce or support
any hardware or software for the architecture, and it is listed as
'Orphaned' in the MAINTAINERS file, as apparently, none of the engineers
that contributed on behalf of those companies (nor anyone else, for that
matter) have been willing to support or maintain the architecture
upstream or even be responsible for applying the odd fix. The Intel
firmware team removed all IA-64 support from the Tianocore/EDK2
reference implementation of EFI in 2018. (Itanium is the original
architecture for which EFI was developed, and the way Linux supports it
deviates significantly from other architectures.) Some distros, such as
Debian and Gentoo, still maintain [unofficial] ia64 ports, but many have
dropped support years ago.

While the argument is being made [1] that there is a 'for the common
good' angle to being able to build and run existing projects such as the
Grid Community Toolkit [2] on Itanium for interoperability testing, the
fact remains that none of those projects are known to be deployed on
Linux/ia64, and very few people actually have access to such a system in
the first place. Even if there were ways imaginable in which Linux/ia64
could be put to good use today, what matters is whether anyone is
actually doing that, and this does not appear to be the case.

There are no emulators widely available, and so boot testing Itanium is
generally infeasible for ordinary contributors. GCC still supports IA-64
but its compile farm [3] no longer has any IA-64 machines. GLIBC would
like to get rid of IA-64 [4] too because it would permit some overdue
code cleanups. In summary, the benefits to the ecosystem of having IA-64
be part of it are mostly theoretical, whereas the maintenance overhead
of keeping it supported is real.

So let's rip off the band aid, and remove the IA-64 arch code entirely.
This follows the timeline proposed by the Debian/ia64 maintainer [5],
which removes support in a controlled manner, leaving IA-64 in a known
good state in the most recent LTS release. Other projects will follow
once the kernel support is removed.

[0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/
[1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/
[2] https://gridcf.org/gct-docs/latest/index.html
[3] https://cfarm.tetaneutral.net/machines/list/
[4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/
[5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/

Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
 2023-09-11 08:13:17 +00:00
Azeem Shaikh
2933d3cd07 tracing: Replace strlcpy with strscpy in trace/events/task.h 
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().

No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Link: https://lore.kernel.org/linux-trace-kernel/20230831194212.1529941-1-azeemshaikh38@gmail.com

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2023-09-01 21:00:00 -04:00
Linus Torvalds
1c9f8dff62 Char/Misc driver changes for 6.6-rc1 
Here is the big set of char/misc and other small driver subsystem
 changes for 6.6-rc1.
 
 Stuff all over the place here, lots of driver updates and changes and
 new additions.  Short summary is:
   - new IIO drivers and updates
   - Interconnect driver updates
   - fpga driver updates and additions
   - fsi driver updates
   - mei driver updates
   - coresight driver updates
   - nvmem driver updates
   - counter driver updates
   - lots of smaller misc and char driver updates and additions
 
 All of these have been in linux-next for a long time with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char/misc and other small driver subsystem
  changes for 6.6-rc1.

  Stuff all over the place here, lots of driver updates and changes and
  new additions. Short summary is:

   - new IIO drivers and updates

   - Interconnect driver updates

   - fpga driver updates and additions

   - fsi driver updates

   - mei driver updates

   - coresight driver updates

   - nvmem driver updates

   - counter driver updates

   - lots of smaller misc and char driver updates and additions

  All of these have been in linux-next for a long time with no reported
  problems"

* tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (267 commits)
  nvmem: core: Notify when a new layout is registered
  nvmem: core: Do not open-code existing functions
  nvmem: core: Return NULL when no nvmem layout is found
  nvmem: core: Create all cells before adding the nvmem device
  nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
  nvmem: sec-qfprom: Add Qualcomm secure QFPROM support
  dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom
  dt-bindings: nvmem: Add compatible for QCM2290
  nvmem: Kconfig: Fix typo "drive" -> "driver"
  nvmem: Explicitly include correct DT includes
  nvmem: add new NXP QorIQ eFuse driver
  dt-bindings: nvmem: Add t1023-sfp efuse support
  dt-bindings: nvmem: qfprom: Add compatible for MSM8226
  nvmem: uniphier: Use devm_platform_get_and_ioremap_resource()
  nvmem: qfprom: do some cleanup
  nvmem: stm32-romem: Use devm_platform_get_and_ioremap_resource()
  nvmem: rockchip-efuse: Use devm_platform_get_and_ioremap_resource()
  nvmem: meson-mx-efuse: Convert to devm_platform_ioremap_resource()
  nvmem: lpc18xx_otp: Convert to devm_platform_ioremap_resource()
  nvmem: brcm_nvram: Use devm_platform_get_and_ioremap_resource()
  ...
 2023-09-01 09:53:54 -07:00
Linus Torvalds
f35d170615 NFSD 6.6 Release Notes 
I'm thrilled to announce that the Linux in-kernel NFS server now
 offers NFSv4 write delegations. A write delegation enables a client
 to cache data and metadata for a single file more aggressively,
 reducing network round trips and server workload. Many thanks to Dai
 Ngo for contributing this facility, and to Jeff Layton and Neil
 Brown for reviewing and testing it.
 
 This release also sees the removal of all support for DES- and
 triple-DES-based Kerberos encryption types in the kernel's SunRPC
 implementation. These encryption types have been deprecated by the
 Internet community for years and are considered insecure. This
 change affects both the in-kernel NFS client and server.
 
 The server's UDP and TCP socket transports have now fully adopted
 David Howells' new bio_vec iterator so that no more than one
 sendmsg() call is needed to transmit each RPC message. In
 particular, this helps kTLS optimize record boundaries when sending
 RPC-with-TLS replies, and it takes the server a baby step closer to
 handling file I/O via folios.
 
 We've begun work on overhauling the SunRPC thread scheduler to
 remove a costly linked-list walk when looking for an idle RPC
 service thread to wake. The pre-requisites are included in this
 release. Thanks to Neil Brown for his ongoing work on this
 improvement.
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Merge tag 'nfsd-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "I'm thrilled to announce that the Linux in-kernel NFS server now
  offers NFSv4 write delegations. A write delegation enables a client to
  cache data and metadata for a single file more aggressively, reducing
  network round trips and server workload. Many thanks to Dai Ngo for
  contributing this facility, and to Jeff Layton and Neil Brown for
  reviewing and testing it.

  This release also sees the removal of all support for DES- and
  triple-DES-based Kerberos encryption types in the kernel's SunRPC
  implementation. These encryption types have been deprecated by the
  Internet community for years and are considered insecure. This change
  affects both the in-kernel NFS client and server.

  The server's UDP and TCP socket transports have now fully adopted
  David Howells' new bio_vec iterator so that no more than one sendmsg()
  call is needed to transmit each RPC message. In particular, this helps
  kTLS optimize record boundaries when sending RPC-with-TLS replies, and
  it takes the server a baby step closer to handling file I/O via
  folios.

  We've begun work on overhauling the SunRPC thread scheduler to remove
  a costly linked-list walk when looking for an idle RPC service thread
  to wake. The pre-requisites are included in this release. Thanks to
  Neil Brown for his ongoing work on this improvement"

* tag 'nfsd-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (56 commits)
  Documentation: Add missing documentation for EXPORT_OP flags
  SUNRPC: Remove unused declaration rpc_modcount()
  SUNRPC: Remove unused declarations
  NFSD: da_addr_body field missing in some GETDEVICEINFO replies
  SUNRPC: Remove return value of svc_pool_wake_idle_thread()
  SUNRPC: make rqst_should_sleep() idempotent()
  SUNRPC: Clean up svc_set_num_threads
  SUNRPC: Count ingress RPC messages per svc_pool
  SUNRPC: Deduplicate thread wake-up code
  SUNRPC: Move trace_svc_xprt_enqueue
  SUNRPC: Add enum svc_auth_status
  SUNRPC: change svc_xprt::xpt_flags bits to enum
  SUNRPC: change svc_rqst::rq_flags bits to enum
  SUNRPC: change svc_pool::sp_flags bits to enum
  SUNRPC: change cache_head.flags bits to enum
  SUNRPC: remove timeout arg from svc_recv()
  SUNRPC: change svc_recv() to return void.
  SUNRPC: call svc_process() from svc_recv().
  nfsd: separate nfsd_last_thread() from nfsd_put()
  nfsd: Simplify code around svc_exit_thread() call in nfsd()
  ...
 2023-08-31 15:32:18 -07:00
Linus Torvalds
659b3613fc dlm for 6.6 
Changes include:
 
 - Allow blocking posix lock requests to be interrupted while waiting.
   This requires a cancel request to be sent to the userspace daemon
   where posix lock requests are processed across the cluster.
 
 - Fix a posix lock patch from the previous cycle in which lock requests
   from different file systems could be mixed up.
 
 - Fix some long standing problems with nfs posix lock cancelation.
 
 - Add a new debugfs file for printing queued callbacks.
 
 - Stop modifying buffers that have been used to receive a message.
 
 - Misc cleanups and some refactoring.
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Merge tag 'dlm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:

 - Allow blocking posix lock requests to be interrupted while waiting.
   This requires a cancel request to be sent to the userspace daemon
   where posix lock requests are processed across the cluster.

 - Fix a posix lock patch from the previous cycle in which lock requests
   from different file systems could be mixed up.

 - Fix some long standing problems with nfs posix lock cancelation.

 - Add a new debugfs file for printing queued callbacks.

 - Stop modifying buffers that have been used to receive a message.

 - Misc cleanups and some refactoring.

* tag 'dlm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: fix plock lookup when using multiple lockspaces
  fs: dlm: don't use RCOM_NAMES for version detection
  fs: dlm: create midcomms nodes when configure
  fs: dlm: constify receive buffer
  fs: dlm: drop rxbuf manipulation in dlm_recover_master_copy
  fs: dlm: drop rxbuf manipulation in dlm_copy_master_names
  fs: dlm: get recovery sequence number as parameter
  fs: dlm: cleanup lock order
  fs: dlm: remove clear_members_cb
  fs: dlm: add plock dev tracepoints
  fs: dlm: check on plock ops when exit dlm
  fs: dlm: debugfs for queued callbacks
  fs: dlm: remove unused processed_nodes
  fs: dlm: add missing spin_unlock
  fs: dlm: fix F_CANCELLK to cancel pending request
  fs: dlm: allow to F_SETLKW getting interrupted
  fs: dlm: remove twice newline
 2023-08-31 15:02:12 -07:00
Linus Torvalds
3d3dfeb3ae for-6.6/block-2023-08-28 
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Merge tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux

Pull block updates from Jens Axboe:
 "Pretty quiet round for this release. This contains:

   - Add support for zoned storage to ublk (Andreas, Ming)

   - Series improving performance for drivers that mark themselves as
     needing a blocking context for issue (Bart)

   - Cleanup the flush logic (Chengming)

   - sed opal keyring support (Greg)

   - Fixes and improvements to the integrity support (Jinyoung)

   - Add some exports for bcachefs that we can hopefully delete again in
     the future (Kent)

   - deadline throttling fix (Zhiguo)

   - Series allowing building the kernel without buffer_head support
     (Christoph)

   - Sanitize the bio page adding flow (Christoph)

   - Write back cache fixes (Christoph)

   - MD updates via Song:
      - Fix perf regression for raid0 large sequential writes (Jan)
      - Fix split bio iostat for raid0 (David)
      - Various raid1 fixes (Heinz, Xueshi)
      - raid6test build fixes (WANG)
      - Deprecate bitmap file support (Christoph)
      - Fix deadlock with md sync thread (Yu)
      - Refactor md io accounting (Yu)
      - Various non-urgent fixes (Li, Yu, Jack)

   - Various fixes and cleanups (Arnd, Azeem, Chengming, Damien, Li,
     Ming, Nitesh, Ruan, Tejun, Thomas, Xu)"

* tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux: (113 commits)
  block: use strscpy() to instead of strncpy()
  block: sed-opal: keyring support for SED keys
  block: sed-opal: Implement IOC_OPAL_REVERT_LSP
  block: sed-opal: Implement IOC_OPAL_DISCOVERY
  blk-mq: prealloc tags when increase tagset nr_hw_queues
  blk-mq: delete redundant tagset map update when fallback
  blk-mq: fix tags leak when shrink nr_hw_queues
  ublk: zoned: support REQ_OP_ZONE_RESET_ALL
  md: raid0: account for split bio in iostat accounting
  md/raid0: Fix performance regression for large sequential writes
  md/raid0: Factor out helper for mapping and submitting a bio
  md raid1: allow writebehind to work on any leg device set WriteMostly
  md/raid1: hold the barrier until handle_read_error() finishes
  md/raid1: free the r1bio before waiting for blocked rdev
  md/raid1: call free_r1bio() before allow_barrier() in raid_end_bio_io()
  blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init
  drivers/rnbd: restore sysfs interface to rnbd-client
  md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()
  raid6: test: only check for Altivec if building on powerpc hosts
  raid6: test: make sure all intermediate and artifact files are .gitignored
  ...
 2023-08-29 20:21:42 -07:00
Linus Torvalds
d68b4b6f30 - An extensive rework of kexec and crash Kconfig from Eric DeVolder 
("refactor Kconfig to consolidate KEXEC and CRASH options").
 
 - kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
   couple of macros to args.h").
 
 - gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
   commands").
 
 - vsprintf inclusion rationalization from Andy Shevchenko
   ("lib/vsprintf: Rework header inclusions").
 
 - Switch the handling of kdump from a udev scheme to in-kernel handling,
   by Eric DeVolder ("crash: Kernel handling of CPU and memory hot
   un/plug").
 
 - Many singleton patches to various parts of the tree
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Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - An extensive rework of kexec and crash Kconfig from Eric DeVolder
   ("refactor Kconfig to consolidate KEXEC and CRASH options")

 - kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
   couple of macros to args.h")

 - gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
   commands")

 - vsprintf inclusion rationalization from Andy Shevchenko
   ("lib/vsprintf: Rework header inclusions")

 - Switch the handling of kdump from a udev scheme to in-kernel
   handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory
   hot un/plug")

 - Many singleton patches to various parts of the tree

* tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits)
  document while_each_thread(), change first_tid() to use for_each_thread()
  drivers/char/mem.c: shrink character device's devlist[] array
  x86/crash: optimize CPU changes
  crash: change crash_prepare_elf64_headers() to for_each_possible_cpu()
  crash: hotplug support for kexec_load()
  x86/crash: add x86 crash hotplug support
  crash: memory and CPU hotplug sysfs attributes
  kexec: exclude elfcorehdr from the segment digest
  crash: add generic infrastructure for crash hotplug support
  crash: move a few code bits to setup support of crash hotplug
  kstrtox: consistently use _tolower()
  kill do_each_thread()
  nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
  scripts/bloat-o-meter: count weak symbol sizes
  treewide: drop CONFIG_EMBEDDED
  lockdep: fix static memory detection even more
  lib/vsprintf: declare no_hash_pointers in sprintf.h
  lib/vsprintf: split out sprintf() and friends
  kernel/fork: stop playing lockless games for exe_file replacement
  adfs: delete unused "union adfs_dirtail" definition
  ...
 2023-08-29 14:53:51 -07:00
Chuck Lever
82e5d82a45 SUNRPC: Move trace_svc_xprt_enqueue 
The xpt_flags field frequently changes between the time that
svc_xprt_ready() grabs a copy and execution flow arrives at the
tracepoint at the tail of svc_xprt_enqueue(). In fact, there's
usually a sleep/wake-up in there, so those flags are almost
guaranteed to be different.

It would be more useful to record the exact flags that were used to
decide whether the transport is ready, so move the tracepoint.

Moving it means the tracepoint can't pick up the waker's pid. That
can be added to struct svc_rqst if it turns out that is important.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2023-08-29 17:45:22 -04:00