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Author SHA1 Message Date
Linus Torvalds
05da1f643f More new code for 5.13-rc1: 
- Remove the now unused "io_private" field from struct iomap_ioend, for
   a modest savings in memory allocation.
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Merge tag 'iomap-5.13-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull more iomap updates from Darrick Wong:
 "Remove the now unused 'io_private' field from struct iomap_ioend, for
  a modest savings in memory allocation"

* tag 'iomap-5.13-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  iomap: remove unused private field from ioend
 2021-05-06 23:54:12 -07:00
Linus Torvalds
af120709b1 More new code for 5.13: 
- Rename the log timestamp struct.
 - Remove broken transaction counter debugging that wasn't working
   correctly on very old filesystems.
 - Various fixes to make pre-lazysbcount filesystems work properly again.
 - Fix a free space accounting problem where we neglected to consider
   free space btree blocks that track metadata reservation space when
   deciding whether or not to allow caller to reserve space for
   a metadata update.
 - Fix incorrect pagecache clearing behavior during FUNSHARE ops.
 - Don't allow log writes if the data device is readonly.
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Merge tag 'xfs-5.13-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull more xfs updates from Darrick Wong:
 "Except for the timestamp struct renaming patches, everything else in
  here are bug fixes:

   - Rename the log timestamp struct.

   - Remove broken transaction counter debugging that wasn't working
     correctly on very old filesystems.

   - Various fixes to make pre-lazysbcount filesystems work properly
     again.

   - Fix a free space accounting problem where we neglected to consider
     free space btree blocks that track metadata reservation space when
     deciding whether or not to allow caller to reserve space for a
     metadata update.

   - Fix incorrect pagecache clearing behavior during FUNSHARE ops.

   - Don't allow log writes if the data device is readonly"

* tag 'xfs-5.13-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: don't allow log writes if the data device is readonly
  xfs: fix xfs_reflink_unshare usage of filemap_write_and_wait_range
  xfs: set aside allocation btree blocks from block reservation
  xfs: introduce in-core global counter of allocbt blocks
  xfs: unconditionally read all AGFs on mounts with perag reservation
  xfs: count free space btree blocks when scrubbing pre-lazysbcount fses
  xfs: update superblock counters correctly for !lazysbcount
  xfs: don't check agf_btreeblks on pre-lazysbcount filesystems
  xfs: remove obsolete AGF counter debugging
  xfs: rename struct xfs_legacy_ictimestamp
  xfs: rename xfs_ictimestamp_t
 2021-05-06 23:46:46 -07:00
Linus Torvalds
aef511fb91 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 
Pull input updates from Dmitry Torokhov:

 - three new touchscreen drivers: Hycon HY46XX, ILITEK Lego Series,
   and MStar MSG2638

 - a new driver for Azoteq IQS626A proximity and touch controller

 - addition of Amazon Game Controller to the list of devices handled
   by the xpad driver

 - Elan touchscreen driver will avoid binding to devices described as
   I2CHID compatible in ACPI tables

 - various driver fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (56 commits)
  Input: xpad - add support for Amazon Game Controller
  Input: ili210x - add missing negation for touch indication on ili210x
  MAINTAINERS: repair reference in HYCON HY46XX TOUCHSCREEN SUPPORT
  Input: add driver for the Hycon HY46XX touchpanel series
  dt-bindings: touchscreen: Add HY46XX bindings
  dt-bindings: Add Hycon Technology vendor prefix
  Input: cyttsp - flag the device properly
  Input: cyttsp - set abs params for ABS_MT_TOUCH_MAJOR
  Input: cyttsp - drop the phys path
  Input: cyttsp - reduce reset pulse timings
  Input: cyttsp - error message on boot mode exit error
  Input: apbps2 - remove useless variable
  Input: mms114 - support MMS136
  Input: mms114 - convert bindings to YAML and extend
  Input: Add support for ILITEK Lego Series
  dt-bindings: input: touchscreen: ilitek_ts_i2c: Add bindings
  Input: add MStar MSG2638 touchscreen driver
  dt-bindings: input/touchscreen: add bindings for msg2638
  Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state
  Input: elants_i2c - do not bind to i2c-hid compatible ACPI instantiated devices
  ...
 2021-05-06 23:37:55 -07:00
Matt Reynolds
05665cef4b Input: xpad - add support for Amazon Game Controller 
The Amazon Luna controller (product name "Amazon Game Controller") behaves
like an Xbox 360 controller when connected over USB.

Signed-off-by: Matt Reynolds <mattreynolds@chromium.org>
Reviewed-by: Harry Cutts <hcutts@chromium.org>
Link: https://lore.kernel.org/r/20210429103548.1.If5f9a44cb81e25b9350f7c6c0b3c88b4ecd81166@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2021-05-06 15:10:34 -07:00
Hansem Ro
ac05a8a927 Input: ili210x - add missing negation for touch indication on ili210x 
This adds the negation needed for proper finger detection on Ilitek
ili2107/ili210x. This fixes polling issues (on Amazon Kindle Fire)
caused by returning false for the cooresponding finger on the touchscreen.

Signed-off-by: Hansem Ro <hansemro@outlook.com>
Fixes: e3559442af ("ili210x - rework the touchscreen sample processing")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2021-05-06 15:10:20 -07:00
Linus Torvalds
e48661230c more s390 updates for 5.13 merge window 
- add support for system call stack randomization.
 
 - handle stale PCI deconfiguration events.
 
 - couple of defconfig updates.
 
 - some fixes and cleanups.
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Merge tag 's390-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Heiko Carstens:

 - add support for system call stack randomization

 - handle stale PCI deconfiguration events

 - couple of defconfig updates

 - some fixes and cleanups

* tag 's390-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: fix detection of vector enhancements facility 1 vs. vector packed decimal facility
  s390/entry: add support for syscall stack randomization
  s390/configs: change CONFIG_VIRTIO_CONSOLE to "m"
  s390/cio: remove invalid condition on IO_SCH_UNREG
  s390/cpumf: remove call to perf_event_update_userpage
  s390/cpumf: move counter set size calculation to common place
  s390/cpumf: beautify if-then-else indentation
  s390/configs: enable CONFIG_PCI_IOV
  s390/pci: handle stale deconfiguration events
  s390/pci: rename zpci_configure_device()
 2021-05-06 14:39:50 -07:00
Linus Torvalds
a2de4bbddc VFIO updates for v5.13-rc1 pt2 
- Additional mdev sample driver cleanup (Dan Carpenter)
 
  - Doc fix (Alyssa Ross)
 
  - Unbreak uAPI from NVLink2 support removal (Alex Williamson)
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Merge tag 'vfio-v5.13-rc1pt2' of git://github.com/awilliam/linux-vfio

Pull more VFIO updates from Alex Williamson:
 "A second small set of commits for this merge window, primarily to
  unbreak some deletions from our uAPI header.

   - Additional mdev sample driver cleanup (Dan Carpenter)

   - Doc fix (Alyssa Ross)

   - Unbreak uAPI from NVLink2 support removal (Alex Williamson)"

* tag 'vfio-v5.13-rc1pt2' of git://github.com/awilliam/linux-vfio:
  docs: vfio: fix typo
  vfio/pci: Revert nvlink removal uAPI breakage
  vfio/mdev: remove unnecessary NULL check in mbochs_create()
 2021-05-06 14:22:58 -07:00
Linus Torvalds
38182162b5 Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 
Pull pcmcia updates from Dominik Brodowski:
 "A number of patches fixing W=1 kernel build warnings, and one patch
  removing an always-false NULL check"

* 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
  pcmcia: rsrc_nonstatic: Fix call-back function as reference formatting
  pcmcia: pcmcia_resource: Fix some kernel-doc formatting/disparities and demote others
  pcmcia: ds: Fix function name disparity in header
  pcmcia: pcmcia_cis: Demote non-conforming kernel-doc headers to standard kernel-doc
  pcmcia: cistpl: Demote non-conformant kernel-doc headers to standard comments
  pcmcia: rsrc_nonstatic: Demote kernel-doc abuses
  pcmcia: ds: Remove if with always false condition
 2021-05-06 11:08:50 -07:00
Linus Torvalds
7ac86b3dca Notable items here are a series to take advantage of David Howells' 
netfs helper library from Jeff, three new filesystem client metrics
 from Xiubo, ceph.dir.rsnaps vxattr from Yanhu and two auth-related
 fixes from myself, marked for stable.  Interspersed is a smattering
 of assorted fixes and cleanups across the filesystem.
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Merge tag 'ceph-for-5.13-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "Notable items here are

   - a series to take advantage of David Howells' netfs helper library
     from Jeff

   - three new filesystem client metrics from Xiubo

   - ceph.dir.rsnaps vxattr from Yanhu

   - two auth-related fixes from myself, marked for stable.

  Interspersed is a smattering of assorted fixes and cleanups across the
  filesystem"

* tag 'ceph-for-5.13-rc1' of git://github.com/ceph/ceph-client: (24 commits)
  libceph: allow addrvecs with a single NONE/blank address
  libceph: don't set global_id until we get an auth ticket
  libceph: bump CephXAuthenticate encoding version
  ceph: don't allow access to MDS-private inodes
  ceph: fix up some bare fetches of i_size
  ceph: convert some PAGE_SIZE invocations to thp_size()
  ceph: support getting ceph.dir.rsnaps vxattr
  ceph: drop pinned_page parameter from ceph_get_caps
  ceph: fix inode leak on getattr error in __fh_to_dentry
  ceph: only check pool permissions for regular files
  ceph: send opened files/pinned caps/opened inodes metrics to MDS daemon
  ceph: avoid counting the same request twice or more
  ceph: rename the metric helpers
  ceph: fix kerneldoc copypasta over ceph_start_io_direct
  ceph: use attach/detach_page_private for tracking snap context
  ceph: don't use d_add in ceph_handle_snapdir
  ceph: don't clobber i_snap_caps on non-I_NEW inode
  ceph: fix fall-through warnings for Clang
  ceph: convert ceph_readpages to ceph_readahead
  ceph: convert ceph_write_begin to netfs_write_begin
  ...
 2021-05-06 10:27:02 -07:00
Linus Torvalds
682a8e2b41 Code cleanups and a bug fix 
- W=1 compiler warning cleanups
 - Mutex initialization simplification
 - Protect against NULL pointer exception during mount
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Merge tag 'ecryptfs-5.13-rc1-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull ecryptfs updates from Tyler Hicks:
 "Code cleanups and a bug fix

   - W=1 compiler warning cleanups

   - Mutex initialization simplification

   - Protect against NULL pointer exception during mount"

* tag 'ecryptfs-5.13-rc1-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  ecryptfs: fix kernel panic with null dev_name
  ecryptfs: remove unused helpers
  ecryptfs: Fix typo in message
  eCryptfs: Use DEFINE_MUTEX() for mutex lock
  ecryptfs: keystore: Fix some kernel-doc issues and demote non-conformant headers
  ecryptfs: inode: Help out nearly-there header and demote non-conformant ones
  ecryptfs: mmap: Help out one function header and demote other abuses
  ecryptfs: crypto: Supply some missing param descriptions and demote abuses
  ecryptfs: miscdev: File headers are not good kernel-doc candidates
  ecryptfs: main: Demote a bunch of non-conformant kernel-doc headers
  ecryptfs: messaging: Add missing param descriptions and demote abuses
  ecryptfs: super: Fix formatting, naming and kernel-doc abuses
  ecryptfs: file: Demote kernel-doc abuses
  ecryptfs: kthread: Demote file header and provide description for 'cred'
  ecryptfs: dentry: File headers are not good candidates for kernel-doc
  ecryptfs: debug: Demote a couple of kernel-doc abuses
  ecryptfs: read_write: File headers do not make good candidates for kernel-doc
  ecryptfs: use DEFINE_MUTEX() for mutex lock
  eCryptfs: add a semicolon
 2021-05-06 10:06:39 -07:00
Linus Torvalds
7ec901b6fa tracing: Fix probes written to the set_ftrace_filter file 
Now that there's a library that accesses the tracefs file system,
 (libtracefs), the way the files are interacted with is slightly
 different than the command line. For instance, the write() system
 call is used directly instead of an echo. This exposes some old bugs.
 
 If a probe is written to "set_ftrace_filter" without any white space
 after it, it will be ignored. This is because the write expects
 that a string written to it that does not end with white spaces thinks
 there is more to come. But if the file is closed, the release function
 needs to finish it. The "set_ftrace_filter" release function handles
 the filter part of the "set_ftrace_filter" file, but did not handle
 the probe part.
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Merge tag 'trace-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Fix probes written to the set_ftrace_filter file

  Now that there's a library that accesses the tracefs file system
  (libtracefs), the way the files are interacted with is slightly
  different than the command line. For instance, the write() system call
  is used directly instead of an echo. This exposes some old bugs.

  If a probe is written to "set_ftrace_filter" without any white space
  after it, it will be ignored. This is because the write expects that a
  string written to it that does not end with white spaces thinks there
  is more to come. But if the file is closed, the release function needs
  to finish it. The "set_ftrace_filter" release function handles the
  filter part of the "set_ftrace_filter" file, but did not handle the
  probe part"

* tag 'trace-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Handle commands when closing set_ftrace_filter file
 2021-05-06 10:03:38 -07:00
Linus Torvalds
164e64adc2 ACPI fixes for 5.13-rc1 
- Revent recent commit related to the handling of ACPI power
    resources during initialization, because it turned out to cause
    problems to occur on some systems (Rafael Wysocki).
 
  - Fix potential use-after-free and potential memory leak in the
    ACPI "custom method" debugfs interface (Mark Langsdorf).
 
  - Update ACPI GPIO properties documentation to cover assumptions
    regarding GPIO polarity (Andy Shevchenko).
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Merge tag 'acpi-5.13-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These revert one recent commit that turned out to be problematic,
  address two issues in the ACPI "custom method" interface and update
  GPIO properties documentation.

  Specifics:

   - Revent recent commit related to the handling of ACPI power
     resources during initialization, because it turned out to cause
     problems to occur on some systems (Rafael Wysocki).

   - Fix potential use-after-free and potential memory leak in the ACPI
     "custom method" debugfs interface (Mark Langsdorf).

   - Update ACPI GPIO properties documentation to cover assumptions
     regarding GPIO polarity (Andy Shevchenko)"

* tag 'acpi-5.13-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPI: scan: Turn off unused power resources during initialization"
  ACPI: custom_method: fix a possible memory leak
  ACPI: custom_method: fix potential use-after-free issue
  Documentation: firmware-guide: gpio-properties: Add note to SPI CS case
 2021-05-06 09:56:26 -07:00
Linus Torvalds
2423e142b3 Devicetree fixes for v5.13-rc: 
- Several Renesas binding fixes to fix warnings
 
 - Remove duplicate compatibles in 8250 binding
 
 - Remove orphaned Sigma Designs Tango bindings
 
 - Fix bcm2711-hdmi binding to use 'additionalProperties'
 
 - Fix idt,32434-pic warning for missing 'interrupts' property
 
 - Fix 'stored but not read' warnings in DT overlay code
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Merge tag 'devicetree-fixes-for-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Several Renesas binding fixes to fix warnings

 - Remove duplicate compatibles in 8250 binding

 - Remove orphaned Sigma Designs Tango bindings

 - Fix bcm2711-hdmi binding to use 'additionalProperties'

 - Fix idt,32434-pic warning for missing 'interrupts' property

 - Fix 'stored but not read' warnings in DT overlay code

* tag 'devicetree-fixes-for-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: net: renesas,etheravb: Fix optional second clock name
  dt-bindings: display: renesas,du: Add missing power-domains property
  dt-bindings: media: renesas,vin: Make resets optional on R-Car Gen1
  dt-bindings: PCI: rcar-pci-host: Document missing R-Car H1 support
  of: overlay: Remove redundant assignment to ret
  dt-bindings: serial: 8250: Remove duplicated compatible strings
  dt-bindings: Remove unused Sigma Designs Tango bindings
  dt-bindings: bcm2711-hdmi: Fix broken schema
  dt-bindings: interrupt-controller: idt,32434-pic: Add missing interrupts property
 2021-05-06 09:53:40 -07:00
Linus Torvalds
322a3b843d ARM updates for 5.13-rc1: 
- Fix BSS size calculation for LLVM
 - Improve robustness of kernel entry around v7_invalidate_l1
 - Fix and update kprobes assembly
 - Correct breakpoint overflow handler check
 - Pause function graph tracer when suspending a CPU
 - Switch to generic syscallhdr.sh and syscalltbl.sh
 - Remove now unused set_kernel_text_r[wo] functions
 - Updates for ptdump (__init marking and using DEFINE_SHOW_ATTRIBUTE)
 - Fix for interrupted SMC (secure) calls
 - Remove Compaq Personal Server platform
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - Fix BSS size calculation for LLVM

 - Improve robustness of kernel entry around v7_invalidate_l1

 - Fix and update kprobes assembly

 - Correct breakpoint overflow handler check

 - Pause function graph tracer when suspending a CPU

 - Switch to generic syscallhdr.sh and syscalltbl.sh

 - Remove now unused set_kernel_text_r[wo] functions

 - Updates for ptdump (__init marking and using DEFINE_SHOW_ATTRIBUTE)

 - Fix for interrupted SMC (secure) calls

 - Remove Compaq Personal Server platform

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: footbridge: remove personal server platform
  ARM: 9075/1: kernel: Fix interrupted SMC calls
  ARM: 9074/1: ptdump: convert to DEFINE_SHOW_ATTRIBUTE
  ARM: 9073/1: ptdump: add __init section marker to three functions
  ARM: 9072/1: mm: remove set_kernel_text_r[ow]()
  ARM: 9067/1: syscalls: switch to generic syscallhdr.sh
  ARM: 9068/1: syscalls: switch to generic syscalltbl.sh
  ARM: 9066/1: ftrace: pause/unpause function graph tracer in cpu_suspend()
  ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
  ARM: 9062/1: kprobes: rewrite test-arm.c in UAL
  ARM: 9061/1: kprobes: fix UNPREDICTABLE warnings
  ARM: 9060/1: kexec: Remove unused kexec_reinit callback
  ARM: 9059/1: cache-v7: get rid of mini-stack
  ARM: 9058/1: cache-v7: refactor v7_invalidate_l1 to avoid clobbering r5/r6
  ARM: 9057/1: cache-v7: add missing ISB after cache level selection
  ARM: 9056/1: decompressor: fix BSS size calculation for LLVM ld.lld
 2021-05-06 09:28:07 -07:00
Linus Torvalds
939b7cbc00 RISC-V Patches for the 5.13 Merge Window, Part 1 
* Support for the memtest= kernel command-line argument.
 * Support for building the kernel with FORTIFY_SOURCE.
 * Support for generic clockevent broadcasts.
 * Support for the buildtar build target.
 * Some build system cleanups to pass more LLVM-friendly arguments.
 * Support for kprobes.
 * A rearranged kernel memory map, the first part of supporting sv48
   systems.
 * Improvements to kexec, along with support for kdump and crash kernels.
 * An alternatives-based errata framework, along with support for
   handling a pair of errata that manifest on some SiFive designs
   (including the HiFive Unmatched).
 * Support for XIP.
 * A device tree for the Microchip PolarFire ICICLE SoC and associated
   dev board.
 
 Along with a bunch of cleanups.  There are already a handful of fixes
 on the list so there will likely be a part 2.
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Merge tag 'riscv-for-linus-5.13-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for the memtest= kernel command-line argument.

 - Support for building the kernel with FORTIFY_SOURCE.

 - Support for generic clockevent broadcasts.

 - Support for the buildtar build target.

 - Some build system cleanups to pass more LLVM-friendly arguments.

 - Support for kprobes.

 - A rearranged kernel memory map, the first part of supporting sv48
   systems.

 - Improvements to kexec, along with support for kdump and crash
   kernels.

 - An alternatives-based errata framework, along with support for
   handling a pair of errata that manifest on some SiFive designs
   (including the HiFive Unmatched).

 - Support for XIP.

 - A device tree for the Microchip PolarFire ICICLE SoC and associated
   dev board.

... along with a bunch of cleanups.  There are already a handful of fixes
on the list so there will likely be a part 2.

* tag 'riscv-for-linus-5.13-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (45 commits)
  RISC-V: Always define XIP_FIXUP
  riscv: Remove 32b kernel mapping from page table dump
  riscv: Fix 32b kernel build with CONFIG_DEBUG_VIRTUAL=y
  RISC-V: Fix error code returned by riscv_hartid_to_cpuid()
  RISC-V: Enable Microchip PolarFire ICICLE SoC
  RISC-V: Initial DTS for Microchip ICICLE board
  dt-bindings: riscv: microchip: Add YAML documentation for the PolarFire SoC
  RISC-V: Add Microchip PolarFire SoC kconfig option
  RISC-V: enable XIP
  RISC-V: Add crash kernel support
  RISC-V: Add kdump support
  RISC-V: Improve init_resources()
  RISC-V: Add kexec support
  RISC-V: Add EM_RISCV to kexec UAPI header
  riscv: vdso: fix and clean-up Makefile
  riscv/mm: Use BUG_ON instead of if condition followed by BUG.
  riscv/kprobe: fix kernel panic when invoking sys_read traced by kprobe
  riscv: Set ARCH_HAS_STRICT_MODULE_RWX if MMU
  riscv: module: Create module allocations without exec permissions
  riscv: bpf: Avoid breaking W^X
  ...
 2021-05-06 09:24:18 -07:00
Linus Torvalds
5e5948e57e Hexagon architecture build fixes + builtins 
Small build fixes applied:
 - use -mlong-calls to build
 - extend jumps in futex_atomic_*
 - etc
 
 Also, for convenience and portability, the hexagon compiler builtin
 functions like memcpy etc have been added to the kernel -- following the
 idiom used by other architectures.
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Merge tag 'hexagon-5.13-0' of git://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux

Pull Hexagon updates from Brian Cain:
 "Hexagon architecture build fixes + builtins

  Small build fixes applied:

   - use -mlong-calls to build

   - extend jumps in futex_atomic_*

   - etc

  Also, for convenience and portability, the hexagon compiler builtin
  functions like memcpy etc have been added to the kernel -- following
  the idiom used by other architectures"

* tag 'hexagon-5.13-0' of git://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux:
  Hexagon: add target builtins to kernel
  Hexagon: remove DEBUG from comet config
  Hexagon: change jumps to must-extend in futex_atomic_*
  Hexagon: fix build errors
 2021-05-06 08:40:38 -07:00
Linus Torvalds
a3f53e8adf A few late-arriving documentation fixes, including some oprofile cleanup, a 
kernel-doc fix, some regression-reporting updates, and the usual minor
 fixes.
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Merge tag 'docs-5.13-2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A few late-arriving documentation fixes, including some oprofile
  cleanup, a kernel-doc fix, some regression-reporting updates, and the
  usual minor fixes"

* tag 'docs-5.13-2' of git://git.lwn.net/linux:
  Enlisted oprofile version line removed
  oprofiled version output line removed from the list
  Removed the oprofiled version option
  docs: reporting-issues.rst: CC subsystem and maintainers on regressions
  docs: correct URL to bios and kernel developer's guide
  docs/core-api: Consistent code style
  docs/zh_CN: Adjust order and content of zh_CN/index.rst
  Documentation: input: joydev file corrections
  docs: Fix typo in Documentation/x86/x86_64/5level-paging.rst
  kernel-doc: Add support for __deprecated
 2021-05-06 08:33:54 -07:00
Rafael J. Wysocki
3da53c7545 Merge branches 'acpi-pm' and 'acpi-docs' 
* acpi-pm:
  Revert "ACPI: scan: Turn off unused power resources during initialization"

* acpi-docs:
  Documentation: firmware-guide: gpio-properties: Add note to SPI CS case
 2021-05-06 17:21:42 +02:00
Linus Torvalds
8404c9fbc8 Merge branch 'akpm' (patches from Andrew) 
Merge more updates from Andrew Morton:
 "The remainder of the main mm/ queue.

  143 patches.

  Subsystems affected by this patch series (all mm): pagecache, hugetlb,
  userfaultfd, vmscan, compaction, migration, cma, ksm, vmstat, mmap,
  kconfig, util, memory-hotplug, zswap, zsmalloc, highmem, cleanups, and
  kfence"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (143 commits)
  kfence: use power-efficient work queue to run delayed work
  kfence: maximize allocation wait timeout duration
  kfence: await for allocation using wait_event
  kfence: zero guard page after out-of-bounds access
  mm/process_vm_access.c: remove duplicate include
  mm/mempool: minor coding style tweaks
  mm/highmem.c: fix coding style issue
  btrfs: use memzero_page() instead of open coded kmap pattern
  iov_iter: lift memzero_page() to highmem.h
  mm/zsmalloc: use BUG_ON instead of if condition followed by BUG.
  mm/zswap.c: switch from strlcpy to strscpy
  arm64/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
  x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
  mm,memory_hotplug: add kernel boot option to enable memmap_on_memory
  acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported
  mm,memory_hotplug: allocate memmap from the added memory range
  mm,memory_hotplug: factor out adjusting present pages into adjust_present_page_count()
  mm,memory_hotplug: relax fully spanned sections check
  drivers/base/memory: introduce memory_block_{online,offline}
  mm/memory_hotplug: remove broken locking of zone PCP structures during hot remove
  ...
 2021-05-05 13:50:15 -07:00
Linus Torvalds
a79cdfba68 Additional fixes and clean-ups for NFSD since tags/nfsd-5.13, 
including a fix to grant read delegations for files open for
 writing.
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Merge tag 'nfsd-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull more nfsd updates from Chuck Lever:
 "Additional fixes and clean-ups for NFSD since tags/nfsd-5.13,
  including a fix to grant read delegations for files open for writing"

* tag 'nfsd-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  SUNRPC: Fix null pointer dereference in svc_rqst_free()
  SUNRPC: fix ternary sign expansion bug in tracing
  nfsd: Fix fall-through warnings for Clang
  nfsd: grant read delegations to clients holding writes
  nfsd: reshuffle some code
  nfsd: track filehandle aliasing in nfs4_files
  nfsd: hash nfs4_files by inode number
  nfsd: ensure new clients break delegations
  nfsd: removed unused argument in nfsd_startup_generic()
  nfsd: remove unused function
  svcrdma: Pass a useful error code to the send_err tracepoint
  svcrdma: Rename goto labels in svc_rdma_sendto()
  svcrdma: Don't leak send_ctxt on Send errors
 2021-05-05 13:44:19 -07:00
Linus Torvalds
7c9e41e0ef 10 CIFS/SMB3 changesets including some important multichannel fixes, as well as support for handle leases (deferred close) and shutdown support 
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Merge tag '5.13-rc-smb3-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs updates from Steve French:
 "Ten CIFS/SMB3 changes - including two marked for stable - including
  some important multichannel fixes, as well as support for handle
  leases (deferred close) and shutdown support:

   - some important multichannel fixes

   - support for handle leases (deferred close)

   - shutdown support (which is also helpful since it enables multiple
     xfstests)

   - enable negotiating stronger encryption by default (GCM256)

   - improve wireshark debugging by allowing more options for root to
     dump decryption keys

  SambaXP and the SMB3 Plugfest test event are going on now so I am
  expecting more patches over the next few days due to extra testing
  (including more multichannel fixes)"

* tag '5.13-rc-smb3-part2' of git://git.samba.org/sfrench/cifs-2.6:
  fs/cifs: Fix resource leak
  Cifs: Fix kernel oops caused by deferred close for files.
  cifs: fix regression when mounting shares with prefix paths
  cifs: use echo_interval even when connection not ready.
  cifs: detect dead connections only when echoes are enabled.
  smb3.1.1: allow dumping keys for multiuser mounts
  smb3.1.1: allow dumping GCM256 keys to improve debugging of encrypted shares
  cifs: add shutdown support
  cifs: Deferred close for files
  smb3.1.1: enable negotiating stronger encryption by default
 2021-05-05 13:37:07 -07:00
Linus Torvalds
16bb86b556 virtio,vhost,vdpa: features, fixes 
A bunch of new drivers including vdpa support for block
 and virtio-vdpa. Beginning of vq kick (aka doorbell) mapping support.
 Misc fixes.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "A bunch of new drivers including vdpa support for block and
  virtio-vdpa.

  Beginning of vq kick (aka doorbell) mapping support.

  Misc fixes"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (40 commits)
  virtio_pci_modern: correct sparse tags for notify
  virtio_pci_modern: __force cast the notify mapping
  vDPA/ifcvf: get_config_size should return dev specific config size
  vDPA/ifcvf: enable Intel C5000X-PL virtio-block for vDPA
  vDPA/ifcvf: deduce VIRTIO device ID when probe
  vdpa_sim_blk: add support for vdpa management tool
  vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID
  vdpa_sim_blk: implement ramdisk behaviour
  vdpa: add vdpa simulator for block device
  vhost/vdpa: Remove the restriction that only supports virtio-net devices
  vhost/vdpa: use get_config_size callback in vhost_vdpa_config_validate()
  vdpa: add get_config_size callback in vdpa_config_ops
  vdpa_sim: cleanup kiovs in vdpasim_free()
  vringh: add vringh_kiov_length() helper
  vringh: implement vringh_kiov_advance()
  vringh: explain more about cleaning riov and wiov
  vringh: reset kiov 'consumed' field in __vringh_iov()
  vringh: add 'iotlb_lock' to synchronize iotlb accesses
  vdpa_sim: use iova module to allocate IOVA addresses
  vDPA/ifcvf: deduce VIRTIO device ID from pdev ids
  ...
 2021-05-05 13:31:39 -07:00
Linus Torvalds
57151b502c pci-v5.13-changes 
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Merge tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Release OF node when pci_scan_device() fails (Dmitry Baryshkov)
   - Add pci_disable_parity() (Bjorn Helgaas)
   - Disable Mellanox Tavor parity reporting (Heiner Kallweit)
   - Disable N2100 r8169 parity reporting (Heiner Kallweit)
   - Fix RCiEP device to RCEC association (Qiuxu Zhuo)
   - Convert sysfs "config", "rom", "reset", "label", "index",
     "acpi_index" to static attributes to help fix races in device
     enumeration (Krzysztof Wilczyński)
   - Convert sysfs "vpd" to static attribute (Heiner Kallweit, Krzysztof
     Wilczyński)
   - Use sysfs_emit() in "show" functions (Krzysztof Wilczyński)
   - Remove unused alloc_pci_root_info() return value (Krzysztof
     Wilczyński)

  PCI device hotplug:
   - Fix acpiphp reference count leak (Feilong Lin)

  Power management:
   - Fix acpi_pci_set_power_state() debug message (Rafael J. Wysocki)
   - Fix runtime PM imbalance (Dinghao Liu)

  Virtualization:
   - Increase delay after FLR to work around Intel DC P4510 NVMe erratum
     (Raphael Norwitz)

  MSI:
   - Convert rcar, tegra, xilinx to MSI domains (Marc Zyngier)
   - For rcar, xilinx, use controller address as MSI doorbell (Marc
     Zyngier)
   - Remove unused hv msi_controller struct (Marc Zyngier)
   - Remove unused PCI core msi_controller support (Marc Zyngier)
   - Remove struct msi_controller altogether (Marc Zyngier)
   - Remove unused default_teardown_msi_irqs() (Marc Zyngier)
   - Let host bridges declare their reliance on MSI domains (Marc
     Zyngier)
   - Make pci_host_common_probe() declare its reliance on MSI domains
     (Marc Zyngier)
   - Advertise mediatek lack of built-in MSI handling (Thomas Gleixner)
   - Document ways of ending up with NO_MSI (Marc Zyngier)
   - Refactor HT advertising of NO_MSI flag (Marc Zyngier)

  VPD:
   - Remove obsolete Broadcom NIC VPD length-limiting quirk (Heiner
     Kallweit)
   - Remove sysfs VPD size checking dead code (Heiner Kallweit)
   - Convert VPF sysfs file to static attribute (Heiner Kallweit)
   - Remove unnecessary pci_set_vpd_size() (Heiner Kallweit)
   - Tone down "missing VPD" message (Heiner Kallweit)

  Endpoint framework:
   - Fix NULL pointer dereference when epc_features not implemented
     (Shradha Todi)
   - Add missing destroy_workqueue() in endpoint test (Yang Yingliang)

  Amazon Annapurna Labs PCIe controller driver:
   - Fix compile testing without CONFIG_PCI_ECAM (Arnd Bergmann)
   - Fix "no symbols" warnings when compile testing with
     CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann)

  APM X-Gene PCIe controller driver:
   - Fix cfg resource mapping regression (Dejin Zheng)

  Broadcom iProc PCIe controller driver:
   - Return zero for success of iproc_msi_irq_domain_alloc() (Pali
     Rohár)

  Broadcom STB PCIe controller driver:
   - Add reset_control_rearm() stub for !CONFIG_RESET_CONTROLLER (Jim
     Quinlan)
   - Fix use of BCM7216 reset controller (Jim Quinlan)
   - Use reset/rearm for Broadcom STB pulse reset instead of
     deassert/assert (Jim Quinlan)
   - Fix brcm_pcie_probe() error return for unsupported revision (Wei
     Yongjun)

  Cavium ThunderX PCIe controller driver:
   - Fix compile testing (Arnd Bergmann)
   - Fix "no symbols" warnings when compile testing with
     CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann)

  Freescale Layerscape PCIe controller driver:
   - Fix ls_pcie_ep_probe() syntax error (comma for semicolon)
     (Krzysztof Wilczyński)
   - Remove layerscape-gen4 dependencies on OF and ARM64, add dependency
     on ARCH_LAYERSCAPE (Geert Uytterhoeven)

  HiSilicon HIP PCIe controller driver:
   - Remove obsolete HiSilicon PCIe DT description (Dongdong Liu)

  Intel Gateway PCIe controller driver:
   - Remove unused pcie_app_rd() (Jiapeng Chong)

  Intel VMD host bridge driver:
   - Program IRTE with Requester ID of VMD endpoint, not child device
     (Jon Derrick)
   - Disable VMD MSI-X remapping when possible so children can use more
     MSI-X vectors (Jon Derrick)

  MediaTek PCIe controller driver:
   - Configure FC and FTS for functions other than 0 (Ryder Lee)
   - Add YAML schema for MediaTek (Jianjun Wang)
   - Export pci_pio_to_address() for module use (Jianjun Wang)
   - Add MediaTek MT8192 PCIe controller driver (Jianjun Wang)
   - Add MediaTek MT8192 INTx support (Jianjun Wang)
   - Add MediaTek MT8192 MSI support (Jianjun Wang)
   - Add MediaTek MT8192 system power management support (Jianjun Wang)
   - Add missing MODULE_DEVICE_TABLE (Qiheng Lin)

  Microchip PolarFlare PCIe controller driver:
   - Make several symbols static (Wei Yongjun)

  NVIDIA Tegra PCIe controller driver:
   - Add MCFG quirks for Tegra194 ECAM errata (Vidya Sagar)
   - Make several symbols const (Rikard Falkeborn)
   - Fix Kconfig host/endpoint typo (Wesley Sheng)

  SiFive FU740 PCIe controller driver:
   - Add pcie_aux clock to prci driver (Greentime Hu)
   - Use reset-simple in prci driver for PCIe (Greentime Hu)
   - Add SiFive FU740 PCIe host controller driver and DT binding (Paul
     Walmsley, Greentime Hu)

  Synopsys DesignWare PCIe controller driver:
   - Move MSI Receiver init to dw_pcie_host_init() so it is
     re-initialized along with the RC in resume (Jisheng Zhang)
   - Move iATU detection earlier to fix regression (Hou Zhiqiang)

  TI J721E PCIe driver:
   - Add DT binding and TI j721e support for refclk to PCIe connector
     (Kishon Vijay Abraham I)
   - Add host mode and endpoint mode DT bindings for TI AM64 SoC (Kishon
     Vijay Abraham I)

  TI Keystone PCIe controller driver:
   - Use generic config accessors for TI AM65x (K3) to fix regression
     (Kishon Vijay Abraham I)

  Xilinx NWL PCIe controller driver:
   - Add support for coherent PCIe DMA traffic using CCI (Bharat Kumar
     Gogada)
   - Add optional "dma-coherent" DT property (Bharat Kumar Gogada)

  Miscellaneous:
   - Fix kernel-doc warnings (Krzysztof Wilczyński)
   - Remove unused MicroGate SyncLink device IDs (Jiri Slaby)
   - Remove redundant dev_err() for devm_ioremap_resource() failure
     (Chen Hui)
   - Remove redundant initialization (Colin Ian King)
   - Drop redundant dev_err() for platform_get_irq() errors (Krzysztof
     Wilczyński)"

* tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (98 commits)
  riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC
  PCI: fu740: Add SiFive FU740 PCIe host controller driver
  dt-bindings: PCI: Add SiFive FU740 PCIe host controller
  MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver
  clk: sifive: Use reset-simple in prci driver for PCIe driver
  clk: sifive: Add pcie_aux clock in prci driver for PCIe driver
  PCI: brcmstb: Use reset/rearm instead of deassert/assert
  ata: ahci_brcm: Fix use of BCM7216 reset controller
  reset: add missing empty function reset_control_rearm()
  PCI: Allow VPD access for QLogic ISP2722
  PCI/VPD: Add helper pci_get_func0_dev()
  PCI/VPD: Remove pci_vpd_find_tag() SRDT handling
  PCI/VPD: Remove pci_vpd_find_tag() 'offset' argument
  PCI/VPD: Change pci_vpd_init() return type to void
  PCI/VPD: Make missing VPD message less alarming
  PCI/VPD: Remove pci_set_vpd_size()
  x86/PCI: Remove unused alloc_pci_root_info() return value
  MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer
  PCI: mediatek-gen3: Add system PM support
  PCI: mediatek-gen3: Add MSI support
  ...
 2021-05-05 13:24:11 -07:00
Linus Torvalds
7b9df264f0 pwm: Changes for v5.13-rc1 
This set of changes adds support for the PWM controller found on Toshiba
 Visconti SoCs and converts a couple of drivers to the atomic API.
 
 There's also a bunch of cleanups and minor fixes across the board.
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Merge tag 'pwm/for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This adds support for the PWM controller found on Toshiba Visconti
  SoCs and converts a couple of drivers to the atomic API.

  There's also a bunch of cleanups and minor fixes across the board"

* tag 'pwm/for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (35 commits)
  pwm: Reword docs about pwm_apply_state()
  pwm: atmel: Improve duty cycle calculation in .apply()
  pwm: atmel: Fix duty cycle calculation in .get_state()
  pwm: visconti: Add Toshiba Visconti SoC PWM support
  dt-bindings: pwm: Add bindings for Toshiba Visconti PWM Controller
  arm64: dts: rockchip: Remove clock-names from PWM nodes
  ARM: dts: rockchip: Remove clock-names from PWM nodes
  dt-bindings: pwm: rockchip: Add more compatible strings
  dt-bindings: pwm: Convert pwm-rockchip.txt to YAML
  pwm: mediatek: Remove unused function
  pwm: pca9685: Improve runtime PM behavior
  pwm: pca9685: Support hardware readout
  pwm: pca9685: Switch to atomic API
  pwm: lpss: Don't modify HW state in .remove callback
  pwm: sti: Free resources only after pwmchip_remove()
  pwm: sti: Don't modify HW state in .remove callback
  pwm: lpc3200: Don't modify HW state in .remove callback
  pwm: lpc18xx-sct: Free resources only after pwmchip_remove()
  pwm: bcm-kona: Don't modify HW state in .remove callback
  pwm: bcm2835: Free resources only after pwmchip_remove()
  ...
 2021-05-05 12:53:16 -07:00
Linus Torvalds
583f2bcf86 - Remove duplicate error message for the amlogic driver (Tang Bin) 
- Fix spellos in comments for the tegra and sun8i (Bhaskar Chowdhury)
 
 - Add the missing fifth node on the rcar_gen3 sensor (Niklas
   Söderlund)
 
 - Remove duplicate include in ti-bandgap (Zhang Yunkai)
 
 - Assign error code in the error path in the function
   thermal_of_populate_bind_params() (Jia-Ju Bai)
 
 - Fix spelling mistake in a comment 'disabed' -> 'disabled' (Colin Ian
   King)
 
 - Use the device name instead of auto-numbering for a better
   identification of the cooling device (Daniel Lezcano)
 
 - Improve a bit the division accuracy in the power allocator governor
   (Jeson Gao)
 
 - Enable the missing third sensor on msm8976 (Konrad Dybcio)
 
 - Add QCom tsens driver co-maintainer (Thara Gopinath)
 
 - Fix memory leak and use after free errors in the core code (Daniel
   Lezcano)
 
 - Add the MDM9607 compatible bindings (Konrad Dybcio)
 
 - Fix trivial spello in the copyright name for Hisilicon (Hao Fang)
 
 - Fix negative index array access when converting the frequency to
   power in the energy model (Brian-sy Yang)
 
 - Add support for Gen2 new PMIC support for Qcom SPMI (David Collins)
 
 - Update maintainer file for CPU cooling device section (Lukasz Luba)
 
 - Fix missing put_device on error in the Qcom tsens driver (Guangqing
   Zhu)
 
 - Add compatible DT binding for sm8350 (Robert Foss)
 
 - Add support for the MDM9607's tsens driver (Konrad Dybcio)
 
 - Remove duplicate error messages in thermal_mmio and the bcm2835
   driver (Ruiqi Gong)
 
 - Add the Thermal Temperature Cooling driver (Zhang Rui)
 
 - Remove duplicate error messages in the Hisilicon sensor driver (Ye
   Bin)
 
 - Use the devm_platform_ioremap_resource_byname() function instead of
   a couple of corresponding calls (dingsenjie)
 
 - Sort the headers alphabetically in the ti-bandgap driver (Zhen Lei)
 
 - Add missing property in the DT thermal sensor binding (Rafał
   Miłecki)
 
 - Remove dead code in the ti-bandgap sensor driver (Lin Ruizhe)
 
 - Convert the BRCM DT bindings to the yaml schema (Rafał Miłecki)
 
 - Replace the thermal_notify_framework() call by a call to the
   thermal_zone_device_update() function. Remove the function as well
   as the corresponding documentation (Thara Gopinath)
 
 - Add support for the ipq8064-tsens sensor along with a set of
   cleanups and code preparation (Ansuel Smith)
 
 - Add a lockless __thermal_cdev_update() function to improve the
   locking scheme in the core code and governors (Lukasz Luba)
 
 - Fix multiple cooling device notification changes (Lukasz Luba)
 
 - Remove unneeded variable initialization (Colin Ian King)
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Merge tag 'thermal-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal updates from Daniel Lezcano:

 - Remove duplicate error message for the amlogic driver (Tang Bin)

 - Fix spellos in comments for the tegra and sun8i (Bhaskar Chowdhury)

 - Add the missing fifth node on the rcar_gen3 sensor (Niklas Söderlund)

 - Remove duplicate include in ti-bandgap (Zhang Yunkai)

 - Assign error code in the error path in the function
   thermal_of_populate_bind_params() (Jia-Ju Bai)

 - Fix spelling mistake in a comment 'disabed' -> 'disabled' (Colin Ian
   King)

 - Use the device name instead of auto-numbering for a better
   identification of the cooling device (Daniel Lezcano)

 - Improve a bit the division accuracy in the power allocator governor
   (Jeson Gao)

 - Enable the missing third sensor on msm8976 (Konrad Dybcio)

 - Add QCom tsens driver co-maintainer (Thara Gopinath)

 - Fix memory leak and use after free errors in the core code (Daniel
   Lezcano)

 - Add the MDM9607 compatible bindings (Konrad Dybcio)

 - Fix trivial spello in the copyright name for Hisilicon (Hao Fang)

 - Fix negative index array access when converting the frequency to
   power in the energy model (Brian-sy Yang)

 - Add support for Gen2 new PMIC support for Qcom SPMI (David Collins)

 - Update maintainer file for CPU cooling device section (Lukasz Luba)

 - Fix missing put_device on error in the Qcom tsens driver (Guangqing
   Zhu)

 - Add compatible DT binding for sm8350 (Robert Foss)

 - Add support for the MDM9607's tsens driver (Konrad Dybcio)

 - Remove duplicate error messages in thermal_mmio and the bcm2835
   driver (Ruiqi Gong)

 - Add the Thermal Temperature Cooling driver (Zhang Rui)

 - Remove duplicate error messages in the Hisilicon sensor driver (Ye
   Bin)

 - Use the devm_platform_ioremap_resource_byname() function instead of a
   couple of corresponding calls (dingsenjie)

 - Sort the headers alphabetically in the ti-bandgap driver (Zhen Lei)

 - Add missing property in the DT thermal sensor binding (Rafał Miłecki)

 - Remove dead code in the ti-bandgap sensor driver (Lin Ruizhe)

 - Convert the BRCM DT bindings to the yaml schema (Rafał Miłecki)

 - Replace the thermal_notify_framework() call by a call to the
   thermal_zone_device_update() function. Remove the function as well as
   the corresponding documentation (Thara Gopinath)

 - Add support for the ipq8064-tsens sensor along with a set of cleanups
   and code preparation (Ansuel Smith)

 - Add a lockless __thermal_cdev_update() function to improve the
   locking scheme in the core code and governors (Lukasz Luba)

 - Fix multiple cooling device notification changes (Lukasz Luba)

 - Remove unneeded variable initialization (Colin Ian King)

* tag 'thermal-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (55 commits)
  thermal/drivers/mtk_thermal: Remove redundant initializations of several variables
  thermal/core/power allocator: Use the lockless __thermal_cdev_update() function
  thermal/core/fair share: Use the lockless __thermal_cdev_update() function
  thermal/core/fair share: Lock the thermal zone while looping over instances
  thermal/core/power_allocator: Update once cooling devices when temp is low
  thermal/core/power_allocator: Maintain the device statistics from going stale
  thermal/core: Create a helper __thermal_cdev_update() without a lock
  dt-bindings: thermal: tsens: Document ipq8064 bindings
  thermal/drivers/tsens: Add support for ipq8064-tsens
  thermal/drivers/tsens: Drop unused define for msm8960
  thermal/drivers/tsens: Replace custom 8960 apis with generic apis
  thermal/drivers/tsens: Fix bug in sensor enable for msm8960
  thermal/drivers/tsens: Use init_common for msm8960
  thermal/drivers/tsens: Add VER_0 tsens version
  thermal/drivers/tsens: Convert msm8960 to reg_field
  thermal/drivers/tsens: Don't hardcode sensor slope
  Documentation: driver-api: thermal: Remove thermal_notify_framework from documentation
  thermal/core: Remove thermal_notify_framework
  iwlwifi: mvm: tt: Replace thermal_notify_framework
  dt-bindings: thermal: brcm,ns-thermal: Convert to the json-schema
  ...
 2021-05-05 12:46:48 -07:00
Linus Torvalds
5d6a1b84e0 gpio updates for v5.13 
- new driver for the Realtek Otto GPIO controller
 - ACPI support for gpio-mpc8xxx
 - edge event support for gpio-sch (+ Kconfig fixes)
 - Kconfig improvements in gpio-ich
 - fixes to older issues in gpio-mockup
 - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055
 - improve the GPIO aggregator code by using more generic interfaces instead of
   reimplementing them in the driver
 - convert the DT bindings for gpio-74x164 to yaml
 - documentation improvements
 - a slew of other minor fixes and improvements to GPIO drivers
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Merge tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:

 - new driver for the Realtek Otto GPIO controller

 - ACPI support for gpio-mpc8xxx

 - edge event support for gpio-sch (+ Kconfig fixes)

 - Kconfig improvements in gpio-ich

 - fixes to older issues in gpio-mockup

 - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055

 - improve the GPIO aggregator code by using more generic interfaces
   instead of reimplementing them in the driver

 - convert the DT bindings for gpio-74x164 to yaml

 - documentation improvements

 - a slew of other minor fixes and improvements to GPIO drivers

* tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (34 commits)
  dt-bindings: gpio: add YAML description for rockchip,gpio-bank
  gpio: mxs: remove useless function
  dt-bindings: gpio: fairchild,74hc595: Convert to json-schema
  gpio: it87: remove unused code
  gpio: 104-dio-48e: Fix coding style issues
  gpio: mpc8xxx: Add ACPI support
  gpio: ich: Switch to be dependent on LPC_ICH
  gpio: sch: Drop MFD_CORE selection
  gpio: sch: depends on LPC_SCH
  gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055
  gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events
  gpio: sch: Add edge event support
  gpio: aggregator: Replace custom get_arg() with a generic next_arg()
  lib/cmdline: Export next_arg() for being used in modules
  gpio: omap: Use device_get_match_data() helper
  gpio: Add Realtek Otto GPIO support
  dt-bindings: gpio: Binding for Realtek Otto GPIO
  docs: kernel-parameters: Add gpio_mockup_named_lines
  docs: kernel-parameters: Move gpio-mockup for alphabetic order
  lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc()
  ...
 2021-05-05 12:39:29 -07:00
Linus Torvalds
5a5bcd43d5 Char/Misc fixes for 5.13-rc1 
Here are 2 char/misc fixes for 5.13-rc1 to resolve reported issues.
 
 The first is a bugfix for the nitro_enclaves driver that fixed some
 important problems.  The second was a dyndbg bugfix that resolved some
 reported problems in dynamic debugging control.
 
 Both have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.13-rc1-round2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are two char/misc fixes for 5.13-rc1 to resolve reported issues.

  The first is a bugfix for the nitro_enclaves driver that fixed some
  important problems. The second was a dyndbg bugfix that resolved some
  reported problems in dynamic debugging control.

  Both have been in linux-next for a while with no reported issues"

* tag 'char-misc-5.13-rc1-round2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  dyndbg: fix parsing file query without a line-range suffix
  nitro_enclaves: Fix stale file descriptors on failed usercopy
 2021-05-05 12:29:37 -07:00
Linus Torvalds
d8cb379cda Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 
Pull turbostat updates from Len Brown:
 "Bug fixes and a smattering of features"

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (21 commits)
  tools/power turbostat: version 2021.05.04
  tools/power turbostat: Support "turbostat --hide idle"
  tools/power turbostat: elevate priority of interval mode
  tools/power turbostat: formatting
  tools/power turbostat: rename tcc variables
  tools/power turbostat: add TCC Offset support
  tools/power turbostat: save original CPU model
  tools/power turbostat: Fix Core C6 residency on Atom CPUs
  tools/power turbostat: Print the C-state Pre-wake settings
  tools/power turbostat: Enable tsc_tweak for Elkhart Lake and Jasper Lake
  tools/power turbostat: unmark non-kernel-doc comment
  tools/power/turbostat: Remove Package C6 Retention on Ice Lake Server
  tools/power turbostat: Fix offset overflow issue in index converting
  tools/power/turbostat: Fix turbostat for AMD Zen CPUs
  tools/power turbostat: update version number
  tools/power turbostat: Fix DRAM Energy Unit on SKX
  Revert "tools/power turbostat: adjust for temperature offset"
  tools/power turbostat: Support Ice Lake D
  tools/power turbostat: Support Alder Lake Mobile
  tools/power turbostat: print microcode patch level
  ...
 2021-05-05 12:24:29 -07:00
Linus Torvalds
dd8c86c6dd Updates for ktest: 
- Added a KTEST section in the MAINTAINERS file
 
  - Included John Hawley as a co-maintainer
 
  - Add an example config that would work with VMware workstation guests
 
  - Cleanups to the code
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Merge tag 'ktest-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest

Pull ktest updates from Steven Rostedt:

 - Added a KTEST section in the MAINTAINERS file

 - Included John Hawley as a co-maintainer

 - Add an example config that would work with VMware workstation guests

 - Cleanups to the code

* tag 'ktest-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Add KTEST section to MAINTAINERS file
  ktest: Re-arrange the code blocks for better discoverability
  ktest: Further consistency cleanups
  ktest: Fixing indentation to match expected pattern
  ktest: Adding editor hints to improve consistency
  ktest: Add example config for using VMware VMs
  ktest: Minor cleanup with uninitialized variable $build_options
 2021-05-05 12:15:20 -07:00
Linus Torvalds
d29c9bb010 Simple code cleanup 
This pull request just has a single 3-line code cleanup CL to eliminate
 some unnecessary 'break' statements. No other work was done on SafeSetID
 for the v5.13 merge window.
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Merge tag 'safesetid-5.13' of git://github.com/micah-morton/linux

Pull SafeSetID update from Micah Morton:
 "Simple code cleanup

  This just has a single three-line code cleanup to eliminate some
  unnecessary 'break' statements"

* tag 'safesetid-5.13' of git://github.com/micah-morton/linux:
  LSM: SafeSetID: Fix code specification by scripts/checkpatch.pl
 2021-05-05 12:08:06 -07:00
Marco Elver
36f0b35d08 kfence: use power-efficient work queue to run delayed work 
Use the power-efficient work queue, to avoid the pathological case where
we keep pinning ourselves on the same possibly idle CPU on systems that
want to be power-efficient (https://lwn.net/Articles/731052/).

Link: https://lkml.kernel.org/r/20210421105132.3965998-4-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Jann Horn <jannh@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Marco Elver
37c9284f69 kfence: maximize allocation wait timeout duration 
The allocation wait timeout was initially added because of warnings due to
CONFIG_DETECT_HUNG_TASK=y [1].  While the 1 sec timeout is sufficient to
resolve the warnings (given the hung task timeout must be 1 sec or larger)
it may cause unnecessary wake-ups if the system is idle:

  https://lkml.kernel.org/r/CADYN=9J0DQhizAGB0-jz4HOBBh+05kMBXb4c0cXMS7Qi5NAJiw@mail.gmail.com

Fix it by computing the timeout duration in terms of the current
sysctl_hung_task_timeout_secs value.

Link: https://lkml.kernel.org/r/20210421105132.3965998-3-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Jann Horn <jannh@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Marco Elver
407f1d8c1b kfence: await for allocation using wait_event 
Patch series "kfence: optimize timer scheduling", v2.

We have observed that mostly-idle systems with KFENCE enabled wake up
otherwise idle CPUs, preventing such to enter a lower power state.
Debugging revealed that KFENCE spends too much active time in
toggle_allocation_gate().

While the first version of KFENCE was using all the right bits to be
scheduling optimal, and thus power efficient, by simply using wait_event()
+ wake_up(), that code was unfortunately removed.

As KFENCE was exposed to various different configs and tests, the
scheduling optimal code slowly disappeared.  First because of hung task
warnings, and finally because of deadlocks when an allocation is made by
timer code with debug objects enabled.  Clearly, the "fixes" were not too
friendly for devices that want to be power efficient.

Therefore, let's try a little harder to fix the hung task and deadlock
problems that we have with wait_event() + wake_up(), while remaining as
scheduling friendly and power efficient as possible.

Crucially, we need to defer the wake_up() to an irq_work, avoiding any
potential for deadlock.

The result with this series is that on the devices where we observed a
power regression, power usage returns back to baseline levels.

This patch (of 3):

On mostly-idle systems, we have observed that toggle_allocation_gate() is
a cause of frequent wake-ups, preventing an otherwise idle CPU to go into
a lower power state.

A late change in KFENCE's development, due to a potential deadlock [1],
required changing the scheduling-friendly wait_event_timeout() and
wake_up() to an open-coded wait-loop using schedule_timeout().  [1]
https://lkml.kernel.org/r/000000000000c0645805b7f982e4@google.com

To avoid unnecessary wake-ups, switch to using wait_event_timeout().

Unfortunately, we still cannot use a version with direct wake_up() in
__kfence_alloc() due to the same potential for deadlock as in [1].
Instead, add a level of indirection via an irq_work that is scheduled if
we determine that the kfence_timer requires a wake_up().

Link: https://lkml.kernel.org/r/20210421105132.3965998-1-elver@google.com
Link: https://lkml.kernel.org/r/20210421105132.3965998-2-elver@google.com
Fixes: 0ce20dd840 ("mm: add Kernel Electric-Fence infrastructure")
Signed-off-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Hillf Danton <hdanton@sina.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Marco Elver
94868a1e12 kfence: zero guard page after out-of-bounds access 
After an out-of-bounds accesses, zero the guard page before re-protecting
in kfence_guarded_free().  On one hand this helps make the failure mode of
subsequent out-of-bounds accesses more deterministic, but could also
prevent certain information leaks.

Link: https://lkml.kernel.org/r/20210312121653.348518-1-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Zhang Yunkai
0c4ff27a0e mm/process_vm_access.c: remove duplicate include 
'linux/compat.h' included in 'process_vm_access.c' is duplicated.

Link: https://lkml.kernel.org/r/20210306132122.220431-1-zhang.yunkai@zte.com.cn
Signed-off-by: Zhang Yunkai <zhang.yunkai@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Zhiyuan Dai
68d68ff6eb mm/mempool: minor coding style tweaks 
Various coding style tweaks to various files under mm/

[daizhiyuan@phytium.com.cn: mm/swapfile: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614223624-16055-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/sparse: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614227288-19363-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/vmscan: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614227649-19853-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/compaction: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614228218-20770-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/oom_kill: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614228360-21168-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/shmem: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614228504-21491-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/page_alloc: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614228613-21754-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/filemap: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1614228936-22337-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/mlock: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1613956588-2453-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/frontswap: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1613962668-15045-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/vmalloc: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1613963379-15988-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/memory_hotplug: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1613971784-24878-1-git-send-email-daizhiyuan@phytium.com.cn
[daizhiyuan@phytium.com.cn: mm/mempolicy: minor coding style tweaks]
  Link: https://lkml.kernel.org/r/1613972228-25501-1-git-send-email-daizhiyuan@phytium.com.cn

Link: https://lkml.kernel.org/r/1614222374-13805-1-git-send-email-daizhiyuan@phytium.com.cn
Signed-off-by: Zhiyuan Dai <daizhiyuan@phytium.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
songqiang
9727688dbf mm/highmem.c: fix coding style issue 
Delete/add some blank lines and some blank spaces

Link: https://lkml.kernel.org/r/20210311095015.14277-1-songqiang@uniontech.com
Signed-off-by: songqiang <songqiang@uniontech.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Ira Weiny
d048b9c2a7 btrfs: use memzero_page() instead of open coded kmap pattern 
There are many places where kmap/memset/kunmap patterns occur.

Use the newly lifted memzero_page() to eliminate direct uses of kmap and
leverage the new core functions use of kmap_local_page().

The development of this patch was aided by the following coccinelle
script:

// <smpl>
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/memset/kunmap pattern and replace with memset*page calls
//
// NOTE: Offsets and other expressions may be more complex than what the script
// will automatically generate.  Therefore a catchall rule is provided to find
// the pattern which then must be evaluated by hand.
//
// Confidence: Low
// Copyright: (C) 2021 Intel Corporation
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:

//
// Then the memset pattern
//
@ memset_rule1 @
expression page, V, L, Off;
identifier ptr;
type VP;
@@

(
-VP ptr = kmap(page);
|
-ptr = kmap(page);
|
-VP ptr = kmap_atomic(page);
|
-ptr = kmap_atomic(page);
)
<+...
(
-memset(ptr, 0, L);
+memzero_page(page, 0, L);
|
-memset(ptr + Off, 0, L);
+memzero_page(page, Off, L);
|
-memset(ptr, V, L);
+memset_page(page, V, 0, L);
|
-memset(ptr + Off, V, L);
+memset_page(page, V, Off, L);
)
...+>
(
-kunmap(page);
|
-kunmap_atomic(ptr);
)

// Remove any pointers left unused
@
depends on memset_rule1
@
identifier memset_rule1.ptr;
type VP, VP1;
@@

-VP ptr;
	... when != ptr;
? VP1 ptr;

//
// Catch all
//
@ memset_rule2 @
expression page;
identifier ptr;
expression GenTo, GenSize, GenValue;
type VP;
@@

(
-VP ptr = kmap(page);
|
-ptr = kmap(page);
|
-VP ptr = kmap_atomic(page);
|
-ptr = kmap_atomic(page);
)
<+...
(
//
// Some call sites have complex expressions within the memset/memcpy
// The follow are catch alls which need to be evaluated by hand.
//
-memset(GenTo, 0, GenSize);
+memzero_pageExtra(page, GenTo, GenSize);
|
-memset(GenTo, GenValue, GenSize);
+memset_pageExtra(page, GenValue, GenTo, GenSize);
)
...+>
(
-kunmap(page);
|
-kunmap_atomic(ptr);
)

// Remove any pointers left unused
@
depends on memset_rule2
@
identifier memset_rule2.ptr;
type VP, VP1;
@@

-VP ptr;
	... when != ptr;
? VP1 ptr;

// </smpl>

Link: https://lkml.kernel.org/r/20210309212137.2610186-4-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Ira Weiny
28961998f8 iov_iter: lift memzero_page() to highmem.h 
Patch series "btrfs: Convert kmap/memset/kunmap to memzero_user()".

Lifting memzero_user(), convert it to kmap_local_page() and then use it
in btrfs.

This patch (of 3):

memzero_page() can replace the kmap/memset/kunmap pattern in other
places in the code.  While zero_user() has the same interface it is not
the same call and its use should be limited and some of those calls may
be better converted from zero_user() to memzero_page().[1] But that is
not addressed in this series.

Lift memzero_page() to highmem.

[1] https://lore.kernel.org/lkml/CAHk-=wijdojzo56FzYqE5TOYw2Vws7ik3LEMGj9SPQaJJ+Z73Q@mail.gmail.com/

Link: https://lkml.kernel.org/r/20210309212137.2610186-1-ira.weiny@intel.com
Link: https://lkml.kernel.org/r/20210309212137.2610186-2-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: David Sterba <dsterba@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
zhouchuangao
ecfc2bda7a mm/zsmalloc: use BUG_ON instead of if condition followed by BUG. 
It can be optimized at compile time.

Link: https://lkml.kernel.org/r/1616727798-9110-1-git-send-email-zhouchuangao@vivo.com
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Zhiyuan Dai
79cd420248 mm/zswap.c: switch from strlcpy to strscpy 
strlcpy is marked as deprecated in Documentation/process/deprecated.rst,
and there is no functional difference when the caller expects truncation
(when not checking the return value).  strscpy is relatively better as
it also avoids scanning the whole source string.

Link: https://lkml.kernel.org/r/1614227981-20367-1-git-send-email-daizhiyuan@phytium.com.cn
Signed-off-by: Zhiyuan Dai <daizhiyuan@phytium.com.cn>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Oscar Salvador
ca6e51d592 arm64/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE 
Enable arm64 platform to use the MHP_MEMMAP_ON_MEMORY feature.

Link: https://lkml.kernel.org/r/20210421102701.25051-9-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Oscar Salvador
f91ef2223d x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE 
Enable x86_64 platform to use the MHP_MEMMAP_ON_MEMORY feature.

Link: https://lkml.kernel.org/r/20210421102701.25051-8-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Oscar Salvador
e3a9d9fcc3 mm,memory_hotplug: add kernel boot option to enable memmap_on_memory 
Self stored memmap leads to a sparse memory situation which is
unsuitable for workloads that requires large contiguous memory chunks,
so make this an opt-in which needs to be explicitly enabled.

To control this, let memory_hotplug have its own memory space, as
suggested by David, so we can add memory_hotplug.memmap_on_memory
parameter.

Link: https://lkml.kernel.org/r/20210421102701.25051-7-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Oscar Salvador
4a3e5de9c4 acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported 
Let the caller check whether it can pass MHP_MEMMAP_ON_MEMORY by
checking mhp_supports_memmap_on_memory().  MHP_MEMMAP_ON_MEMORY can only
be set in case ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE is enabled, the
architecture supports altmap, and the range to be added spans a single
memory block.

Link: https://lkml.kernel.org/r/20210421102701.25051-6-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:27 -07:00
Oscar Salvador
a08a2ae346 mm,memory_hotplug: allocate memmap from the added memory range 
Physical memory hotadd has to allocate a memmap (struct page array) for
the newly added memory section.  Currently, alloc_pages_node() is used
for those allocations.

This has some disadvantages:
 a) an existing memory is consumed for that purpose
    (eg: ~2MB per 128MB memory section on x86_64)
    This can even lead to extreme cases where system goes OOM because
    the physically hotplugged memory depletes the available memory before
    it is onlined.
 b) if the whole node is movable then we have off-node struct pages
    which has performance drawbacks.
 c) It might be there are no PMD_ALIGNED chunks so memmap array gets
    populated with base pages.

This can be improved when CONFIG_SPARSEMEM_VMEMMAP is enabled.

Vmemap page tables can map arbitrary memory.  That means that we can
reserve a part of the physically hotadded memory to back vmemmap page
tables.  This implementation uses the beginning of the hotplugged memory
for that purpose.

There are some non-obviously things to consider though.

Vmemmap pages are allocated/freed during the memory hotplug events
(add_memory_resource(), try_remove_memory()) when the memory is
added/removed.  This means that the reserved physical range is not
online although it is used.  The most obvious side effect is that
pfn_to_online_page() returns NULL for those pfns.  The current design
expects that this should be OK as the hotplugged memory is considered a
garbage until it is onlined.  For example hibernation wouldn't save the
content of those vmmemmaps into the image so it wouldn't be restored on
resume but this should be OK as there no real content to recover anyway
while metadata is reachable from other data structures (e.g.  vmemmap
page tables).

The reserved space is therefore (de)initialized during the {on,off}line
events (mhp_{de}init_memmap_on_memory).  That is done by extracting page
allocator independent initialization from the regular onlining path.
The primary reason to handle the reserved space outside of
{on,off}line_pages is to make each initialization specific to the
purpose rather than special case them in a single function.

As per above, the functions that are introduced are:

 - mhp_init_memmap_on_memory:
   Initializes vmemmap pages by calling move_pfn_range_to_zone(), calls
   kasan_add_zero_shadow(), and onlines as many sections as vmemmap pages
   fully span.

 - mhp_deinit_memmap_on_memory:
   Offlines as many sections as vmemmap pages fully span, removes the
   range from zhe zone by remove_pfn_range_from_zone(), and calls
   kasan_remove_zero_shadow() for the range.

The new function memory_block_online() calls mhp_init_memmap_on_memory()
before doing the actual online_pages().  Should online_pages() fail, we
clean up by calling mhp_deinit_memmap_on_memory().  Adjusting of
present_pages is done at the end once we know that online_pages()
succedeed.

On offline, memory_block_offline() needs to unaccount vmemmap pages from
present_pages() before calling offline_pages().  This is necessary because
offline_pages() tears down some structures based on the fact whether the
node or the zone become empty.  If offline_pages() fails, we account back
vmemmap pages.  If it succeeds, we call mhp_deinit_memmap_on_memory().

Hot-remove:

 We need to be careful when removing memory, as adding and
 removing memory needs to be done with the same granularity.
 To check that this assumption is not violated, we check the
 memory range we want to remove and if a) any memory block has
 vmemmap pages and b) the range spans more than a single memory
 block, we scream out loud and refuse to proceed.

 If all is good and the range was using memmap on memory (aka vmemmap pages),
 we construct an altmap structure so free_hugepage_table does the right
 thing and calls vmem_altmap_free instead of free_pagetable.

Link: https://lkml.kernel.org/r/20210421102701.25051-5-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:26 -07:00
David Hildenbrand
f9901144e4 mm,memory_hotplug: factor out adjusting present pages into adjust_present_page_count() 
Let's have a single place (inspired by adjust_managed_page_count())
where we adjust present pages.

In contrast to adjust_managed_page_count(), only memory onlining or
offlining is allowed to modify the number of present pages.

Link: https://lkml.kernel.org/r/20210421102701.25051-4-osalvador@suse.de
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:26 -07:00
Oscar Salvador
dd8e2f230d mm,memory_hotplug: relax fully spanned sections check 
We want {online,offline}_pages to operate on whole memblocks, but
memmap_on_memory will poke pageblock_nr_pages aligned holes in the
beginning, which is a special case we want to allow.  Relax the check to
account for that case.

Link: https://lkml.kernel.org/r/20210421102701.25051-3-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:26 -07:00
Oscar Salvador
8736cc2d00 drivers/base/memory: introduce memory_block_{online,offline} 
Patch series "Allocate memmap from hotadded memory (per device)", v10.

The primary goal of this patchset is to reduce memory overhead of the
hot-added memory (at least for SPARSEMEM_VMEMMAP memory model).  The
current way we use to populate memmap (struct page array) has two main
drawbacks:

a) it consumes an additional memory until the hotadded memory itself is
   onlined and

b) memmap might end up on a different numa node which is especially
   true for movable_node configuration.

c) due to fragmentation we might end up populating memmap with base
   pages

One way to mitigate all these issues is to simply allocate memmap array
(which is the largest memory footprint of the physical memory hotplug)
from the hot-added memory itself.  SPARSEMEM_VMEMMAP memory model allows
us to map any pfn range so the memory doesn't need to be online to be
usable for the array.  See patch 4 for more details.  This feature is
only usable when CONFIG_SPARSEMEM_VMEMMAP is set.

[Overall design]:

Implementation wise we reuse vmem_altmap infrastructure to override the
default allocator used by vmemap_populate.  memory_block structure gains a
new field called nr_vmemmap_pages, which accounts for the number of
vmemmap pages used by that memory_block.  E.g: On x86_64, that is 512
vmemmap pages on small memory bloks and 4096 on large memory blocks (1GB)

We also introduce new two functions: memory_block_{online,offline}.  These
functions take care of initializing/unitializing vmemmap pages prior to
calling {online,offline}_pages, so the latter functions can remain totally
untouched.

More details can be found in the respective changelogs.

This patch (of 8):

This is a preparatory patch that introduces two new functions:
memory_block_online() and memory_block_offline().

For now, these functions will only call online_pages() and offline_pages()
respectively, but they will be later in charge of preparing the vmemmap
pages, carrying out the initialization and proper accounting of such
pages.

Since memory_block struct contains all the information, pass this struct
down the chain till the end functions.

Link: https://lkml.kernel.org/r/20210421102701.25051-1-osalvador@suse.de
Link: https://lkml.kernel.org/r/20210421102701.25051-2-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:26 -07:00
Mel Gorman
8ca559132a mm/memory_hotplug: remove broken locking of zone PCP structures during hot remove 
zone_pcp_reset allegedly protects against a race with drain_pages using
local_irq_save but this is bogus.  local_irq_save only operates on the
local CPU.  If memory hotplug is running on CPU A and drain_pages is
running on CPU B, disabling IRQs on CPU A does not affect CPU B and
offers no protection.

This patch deletes IRQ disable/enable on the grounds that IRQs protect
nothing and assumes the existing hotplug paths guarantees the PCP cannot
be used after zone_pcp_enable().  That should be the case already
because all the pages have been freed and there is no page to put on the
PCP lists.

Link: https://lkml.kernel.org/r/20210412090346.GQ3697@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-05 11:27:26 -07:00