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Author SHA1 Message Date
Linus Torvalds
c69cf88cda ARM: SoC fixes for 6.0-rc6 
Another set of fixes for fixes for the soc tree:
 
  - A fix for the interrupt number on at91/lan966 ethernet PHYs
 
  - A second round of fixes for NXP i.MX series, including a couple
    of build issues, and board specific DT corrections on
    TQMa8MPQL, imx8mp-venice-gw74xx and imx8mm-verdin for reliability
    and partially broken functionality.
 
  - Several fixes for Rockchip SoCs, addressing a USB issue on BPI-R2-Pro,
    wakeup on Gru-Bob and reliability of high-speed SD cards, among
    other minor issues.
 
  - A fix for a long-running naming mistake that prevented the moxart mmc
    driver from working at all.
 
  - Multiple Arm SCMI firmware fixes for hardening some corner cases.
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Merge tag 'soc-fixes-6.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Another set of fixes for fixes for the soc tree:

   - A fix for the interrupt number on at91/lan966 ethernet PHYs

   - A second round of fixes for NXP i.MX series, including a couple of
     build issues, and board specific DT corrections on TQMa8MPQL,
     imx8mp-venice-gw74xx and imx8mm-verdin for reliability and
     partially broken functionality

   - Several fixes for Rockchip SoCs, addressing a USB issue on
     BPI-R2-Pro, wakeup on Gru-Bob and reliability of high-speed SD
     cards, among other minor issues

   - A fix for a long-running naming mistake that prevented the moxart
     mmc driver from working at all

   - Multiple Arm SCMI firmware fixes for hardening some corner cases"

* tag 'soc-fixes-6.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
  arm64: dts: imx8mp-venice-gw74xx: fix port/phy validation
  ARM: dts: lan966x: Fix the interrupt number for internal PHYs
  arm64: dts: imx8mp-venice-gw74xx: fix ksz9477 cpu port
  arm64: dts: imx8mp-venice-gw74xx: fix CAN STBY polarity
  dt-bindings: memory-controllers: fsl,imx8m-ddrc: drop Leonard Crestez
  arm64: dts: tqma8mqml: Include phy-imx8-pcie.h header
  arm64: defconfig: enable ARCH_NXP
  arm64: dts: imx8mp-tqma8mpql-mba8mpxl: add missing pinctrl for RTC alarm
  ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
  arm64: dts: imx8mm-verdin: extend pmic voltages
  arm64: dts: rockchip: Remove 'enable-active-low' from rk3566-quartz64-a
  arm64: dts: rockchip: Remove 'enable-active-low' from rk3399-puma
  arm64: dts: rockchip: fix property for usb2 phy supply on rk3568-evb1-v10
  arm64: dts: rockchip: fix property for usb2 phy supply on rock-3a
  arm64: dts: imx8ulp: add #reset-cells for pcc
  arm64: dts: tqma8mpxl-ba8mpxl: Fix button GPIOs
  arm64: dts: imx8mn: remove GPU power domain reset
  arm64: dts: rockchip: Set RK3399-Gru PCLK_EDP to 24 MHz
  arm64: dts: imx8mm: Reverse CPLD_Dn GPIO label mapping on MX8Menlo
  arm64: dts: rockchip: fix upper usb port on BPI-R2-Pro
  ...
 2022-09-22 11:10:11 -07:00
Menglong Dong
9cb252c4c1 net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM 
As Eric reported, the 'reason' field is not presented when trace the
kfree_skb event by perf:

$ perf record -e skb:kfree_skb -a sleep 10
$ perf script
  ip_defrag 14605 [021]   221.614303:   skb:kfree_skb:
  skbaddr=0xffff9d2851242700 protocol=34525 location=0xffffffffa39346b1
  reason:

The cause seems to be passing kernel address directly to TP_printk(),
which is not right. As the enum 'skb_drop_reason' is not exported to
user space through TRACE_DEFINE_ENUM(), perf can't get the drop reason
string from the 'reason' field, which is a number.

Therefore, we introduce the macro DEFINE_DROP_REASON(), which is used
to define the trace enum by TRACE_DEFINE_ENUM(). With the help of
DEFINE_DROP_REASON(), now we can remove the auto-generate that we
introduced in the commit ec43908dd5
("net: skb: use auto-generation to convert skb drop reason to string"),
and define the string array 'drop_reasons'.

Hmmmm...now we come back to the situation that have to maintain drop
reasons in both enum skb_drop_reason and DEFINE_DROP_REASON. But they
are both in dropreason.h, which makes it easier.

After this commit, now the format of kfree_skb is like this:

$ cat /tracing/events/skb/kfree_skb/format
name: kfree_skb
ID: 1524
format:
        field:unsigned short common_type;       offset:0;       size:2; signed:0;
        field:unsigned char common_flags;       offset:2;       size:1; signed:0;
        field:unsigned char common_preempt_count;       offset:3;       size:1; signed:0;
        field:int common_pid;   offset:4;       size:4; signed:1;

        field:void * skbaddr;   offset:8;       size:8; signed:0;
        field:void * location;  offset:16;      size:8; signed:0;
        field:unsigned short protocol;  offset:24;      size:2; signed:0;
        field:enum skb_drop_reason reason;      offset:28;      size:4; signed:0;

print fmt: "skbaddr=%p protocol=%u location=%p reason: %s", REC->skbaddr, REC->protocol, REC->location, __print_symbolic(REC->reason, { 1, "NOT_SPECIFIED" }, { 2, "NO_SOCKET" } ......

Fixes: ec43908dd5 ("net: skb: use auto-generation to convert skb drop reason to string")
Link: https://lore.kernel.org/netdev/CANn89i+bx0ybvE55iMYf5GJM48WwV1HNpdm9Q6t-HaEstqpCSA@mail.gmail.com/
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2022-09-07 15:28:08 +01:00
Cristian Marussi
40d30cf680 firmware: arm_scmi: Harmonize SCMI tracing message format 
After the recently added new scmi_msg_dump traces, the general format of
the various other SCMI traces are not consistent.

As an example the full traces of a simple PERF_LEVEL_SET:

 | cpufreq-set-276  scmi_xfer_begin: transfer_id=145 msg_id=7 protocol_id=19 seq=145 poll=0
 | cpufreq-set-276  scmi_msg_dump: pt=13 t=CMND msg_id=07 seq=0091 s=0 pyld=000000008066ab13
 | cpufreq-set-276  scmi_xfer_response_wait: transfer_id=145 msg_id=7 protocol_id=19 seq=145 tmo_ms=5000 poll=0
 |      <idle>-0    scmi_msg_dump: pt=13 t=RESP msg_id=07 seq=0091 s=0 pyld=
 |      <idle>-0    scmi_rx_done: transfer_id=145 msg_id=7 protocol_id=19 seq=145 msg_type=0
 | cpufreq-set-276  scmi_xfer_end: transfer_id=145 msg_id=7 protocol_id=19 seq=145 status=0

... where the same information is being reported using different names
(protocol_id= vs pt=) and even worst different bases, which is hard to
read and to parse.

So let us unify them, using the same naming and ordering of the fields
(wherever possible) and moving all the protocol related fields to base-16
while keeping in base-10 timeouts, res_id and values, so that the new
traces would be like:

 | cpufreq-set-274  scmi_xfer_begin: pt=13 msg_id=07 seq=0092 transfer_id=92 poll=0
 | cpufreq-set-274  scmi_msg_dump: pt=13 t=CMND msg_id=07 seq=0092 s=0 pyld=000000008066ab13
 | cpufreq-set-274  scmi_xfer_response_wait: pt=13 msg_id=07 seq=0092 transfer_id=92 tmo_ms=5000 poll=0
 |         cat-256  scmi_msg_dump: pt=13 t=RESP msg_id=07 seq=0092 s=0 pyld=
 |         cat-256  scmi_rx_done: pt=13 msg_id=07 seq=0092 transfer_id=92 msg_type=0
 | cpufreq-set-274  scmi_xfer_end: pt=13 msg_id=07 seq=0092 transfer_id=92 s=0

Link: https://lore.kernel.org/r/20220818132309.584042-2-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
 2022-08-23 12:21:37 +01:00
Linus Torvalds
e18a90427c * Xen timer fixes 
* Documentation formatting fixes
 
 * Make rseq selftest compatible with glibc-2.35
 
 * Fix handling of illegal LEA reg, reg
 
 * Cleanup creation of debugfs entries
 
 * Fix steal time cache handling bug
 
 * Fixes for MMIO caching
 
 * Optimize computation of number of LBRs
 
 * Fix uninitialized field in guest_maxphyaddr < host_maxphyaddr path
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm updates from Paolo Bonzini:

 - Xen timer fixes

 - Documentation formatting fixes

 - Make rseq selftest compatible with glibc-2.35

 - Fix handling of illegal LEA reg, reg

 - Cleanup creation of debugfs entries

 - Fix steal time cache handling bug

 - Fixes for MMIO caching

 - Optimize computation of number of LBRs

 - Fix uninitialized field in guest_maxphyaddr < host_maxphyaddr path

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (26 commits)
  KVM: x86/MMU: properly format KVM_CAP_VM_DISABLE_NX_HUGE_PAGES capability table
  Documentation: KVM: extend KVM_CAP_VM_DISABLE_NX_HUGE_PAGES heading underline
  KVM: VMX: Adjust number of LBR records for PERF_CAPABILITIES at refresh
  KVM: VMX: Use proper type-safe functions for vCPU => LBRs helpers
  KVM: x86: Refresh PMU after writes to MSR_IA32_PERF_CAPABILITIES
  KVM: selftests: Test all possible "invalid" PERF_CAPABILITIES.LBR_FMT vals
  KVM: selftests: Use getcpu() instead of sched_getcpu() in rseq_test
  KVM: selftests: Make rseq compatible with glibc-2.35
  KVM: Actually create debugfs in kvm_create_vm()
  KVM: Pass the name of the VM fd to kvm_create_vm_debugfs()
  KVM: Get an fd before creating the VM
  KVM: Shove vcpu stats_id init into kvm_vcpu_init()
  KVM: Shove vm stats_id init into kvm_create_vm()
  KVM: x86/mmu: Add sanity check that MMIO SPTE mask doesn't overlap gen
  KVM: x86/mmu: rename trace function name for asynchronous page fault
  KVM: x86/xen: Stop Xen timer before changing IRQ
  KVM: x86/xen: Initialize Xen timer only once
  KVM: SVM: Disable SEV-ES support if MMIO caching is disable
  KVM: x86/mmu: Fully re-evaluate MMIO caching when SPTE masks change
  KVM: x86: Tag kvm_mmu_x86_module_init() with __init
  ...
 2022-08-11 12:10:08 -07:00
Linus Torvalds
aeb6e6ac18 NFS client updates for Linux 5.20 
Highlights include:
 
 Stable fixes:
 - pNFS/flexfiles: Fix infinite looping when the RDMA connection errors out
 
 Bugfixes:
 - NFS: fix port value parsing
 - SUNRPC: Reinitialise the backchannel request buffers before reuse
 - SUNRPC: fix expiry of auth creds
 - NFSv4: Fix races in the legacy idmapper upcall
 - NFS: O_DIRECT fixes from Jeff Layton
 - NFSv4.1: Fix OP_SEQUENCE error handling
 - SUNRPC: Fix an RPC/RDMA performance regression
 - NFS: Fix case insensitive renames
 - NFSv4/pnfs: Fix a use-after-free bug in open
 - NFSv4.1: RECLAIM_COMPLETE must handle EACCES
 
 Features:
 - NFSv4.1: session trunking enhancements
 - NFSv4.2: READ_PLUS performance optimisations
 - NFS: relax the rules for rsize/wsize mount options
 - NFS: don't unhash dentry during unlink/rename
 - SUNRPC: Fail faster on bad verifier
 - NFS/SUNRPC: Various tracing improvements
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Merge tag 'nfs-for-5.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

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

  Stable fixes:
   - pNFS/flexfiles: Fix infinite looping when the RDMA connection
     errors out

  Bugfixes:
   - NFS: fix port value parsing
   - SUNRPC: Reinitialise the backchannel request buffers before reuse
   - SUNRPC: fix expiry of auth creds
   - NFSv4: Fix races in the legacy idmapper upcall
   - NFS: O_DIRECT fixes from Jeff Layton
   - NFSv4.1: Fix OP_SEQUENCE error handling
   - SUNRPC: Fix an RPC/RDMA performance regression
   - NFS: Fix case insensitive renames
   - NFSv4/pnfs: Fix a use-after-free bug in open
   - NFSv4.1: RECLAIM_COMPLETE must handle EACCES

  Features:
   - NFSv4.1: session trunking enhancements
   - NFSv4.2: READ_PLUS performance optimisations
   - NFS: relax the rules for rsize/wsize mount options
   - NFS: don't unhash dentry during unlink/rename
   - SUNRPC: Fail faster on bad verifier
   - NFS/SUNRPC: Various tracing improvements"

* tag 'nfs-for-5.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (46 commits)
  NFS: Improve readpage/writepage tracing
  NFS: Improve O_DIRECT tracing
  NFS: Improve write error tracing
  NFS: don't unhash dentry during unlink/rename
  NFSv4/pnfs: Fix a use-after-free bug in open
  NFS: nfs_async_write_reschedule_io must not recurse into the writeback code
  SUNRPC: Don't reuse bvec on retransmission of the request
  SUNRPC: Reinitialise the backchannel request buffers before reuse
  NFSv4.1: RECLAIM_COMPLETE must handle EACCES
  NFSv4.1 probe offline transports for trunking on session creation
  SUNRPC create a function that probes only offline transports
  SUNRPC export xprt_iter_rewind function
  SUNRPC restructure rpc_clnt_setup_test_and_add_xprt
  NFSv4.1 remove xprt from xprt_switch if session trunking test fails
  SUNRPC create an rpc function that allows xprt removal from rpc_clnt
  SUNRPC enable back offline transports in trunking discovery
  SUNRPC create an iterator to list only OFFLINE xprts
  NFSv4.1 offline trunkable transports on DESTROY_SESSION
  SUNRPC add function to offline remove trunkable transports
  SUNRPC expose functions for offline remote xprt functionality
  ...
 2022-08-10 14:04:32 -07:00
Mingwei Zhang
1685c0f325 KVM: x86/mmu: rename trace function name for asynchronous page fault 
Rename the tracepoint function from trace_kvm_async_pf_doublefault() to
trace_kvm_async_pf_repeated_fault() to make it clear, since double fault
has nothing to do with this trace function.

Asynchronous Page Fault (APF) is an artifact generated by KVM when it
cannot find a physical page to satisfy an EPT violation. KVM uses APF to
tell the guest OS to do something else such as scheduling other guest
processes to make forward progress. However, when another guest process
also touches a previously APFed page, KVM halts the vCPU instead of
generating a repeated APF to avoid wasting cycles.

Double fault (#DF) clearly has a different meaning and a different
consequence when triggered. #DF requires two nested contributory exceptions
instead of two page faults faulting at the same address. A prevous bug on
APF indicates that it may trigger a double fault in the guest [1] and
clearly this trace function has nothing to do with it. So rename this
function should be a valid choice.

No functional change intended.

[1] https://www.spinics.net/lists/kvm/msg214957.html

Signed-off-by: Mingwei Zhang <mizhang@google.com>
Message-Id: <20220807052141.69186-1-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2022-08-10 15:08:26 -04:00
Linus Torvalds
e394ff83bb NFSD 6.0 Release Notes 
Work on "courteous server", which was introduced in 5.19, continues
 apace. This release introduces a more flexible limit on the number
 of NFSv4 clients that NFSD allows, now that NFSv4 clients can remain
 in courtesy state long after the lease expiration timeout. The
 client limit is adjusted based on the physical memory size of the
 server.
 
 The NFSD filecache is a cache of files held open by NFSv4 clients or
 recently touched by NFSv2 or NFSv3 clients. This cache had some
 significant scalability constraints that have been relieved in this
 release. Thanks to all who contributed to this work.
 
 A data corruption bug found during the most recent NFS bake-a-thon
 that involves NFSv3 and NFSv4 clients writing the same file has been
 addressed in this release.
 
 This release includes several improvements in CPU scalability for
 NFSv4 operations. In addition, Neil Brown provided patches that
 simplify locking during file lookup, creation, rename, and removal
 that enables subsequent work on making these operations more
 scalable. We expect to see that work materialize in the next
 release.
 
 There are also numerous single-patch fixes, clean-ups, and the
 usual improvements in observability.
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Merge tag 'nfsd-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "Work on 'courteous server', which was introduced in 5.19, continues
  apace. This release introduces a more flexible limit on the number of
  NFSv4 clients that NFSD allows, now that NFSv4 clients can remain in
  courtesy state long after the lease expiration timeout. The client
  limit is adjusted based on the physical memory size of the server.

  The NFSD filecache is a cache of files held open by NFSv4 clients or
  recently touched by NFSv2 or NFSv3 clients. This cache had some
  significant scalability constraints that have been relieved in this
  release. Thanks to all who contributed to this work.

  A data corruption bug found during the most recent NFS bake-a-thon
  that involves NFSv3 and NFSv4 clients writing the same file has been
  addressed in this release.

  This release includes several improvements in CPU scalability for
  NFSv4 operations. In addition, Neil Brown provided patches that
  simplify locking during file lookup, creation, rename, and removal
  that enables subsequent work on making these operations more scalable.
  We expect to see that work materialize in the next release.

  There are also numerous single-patch fixes, clean-ups, and the usual
  improvements in observability"

* tag 'nfsd-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (78 commits)
  lockd: detect and reject lock arguments that overflow
  NFSD: discard fh_locked flag and fh_lock/fh_unlock
  NFSD: use (un)lock_inode instead of fh_(un)lock for file operations
  NFSD: use explicit lock/unlock for directory ops
  NFSD: reduce locking in nfsd_lookup()
  NFSD: only call fh_unlock() once in nfsd_link()
  NFSD: always drop directory lock in nfsd_unlink()
  NFSD: change nfsd_create()/nfsd_symlink() to unlock directory before returning.
  NFSD: add posix ACLs to struct nfsd_attrs
  NFSD: add security label to struct nfsd_attrs
  NFSD: set attributes when creating symlinks
  NFSD: introduce struct nfsd_attrs
  NFSD: verify the opened dentry after setting a delegation
  NFSD: drop fh argument from alloc_init_deleg
  NFSD: Move copy offload callback arguments into a separate structure
  NFSD: Add nfsd4_send_cb_offload()
  NFSD: Remove kmalloc from nfsd4_do_async_copy()
  NFSD: Refactor nfsd4_do_copy()
  NFSD: Refactor nfsd4_cleanup_inter_ssc() (2/2)
  NFSD: Refactor nfsd4_cleanup_inter_ssc() (1/2)
  ...
 2022-08-09 14:56:49 -07:00
Linus Torvalds
15205c2829 fscache fixes 
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Merge tag 'fscache-fixes-20220809' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull fscache updates from David Howells:

 - Fix a cookie access ref leak if a cookie is invalidated a second time
   before the first invalidation is actually processed.

 - Add a tracepoint to log cookie lookup failure

* tag 'fscache-fixes-20220809' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  fscache: add tracepoint when failing cookie
  fscache: don't leak cookie access refs if invalidation is in progress or failed
 2022-08-09 10:11:56 -07:00
Linus Torvalds
4b22e20741 AFS fixes 
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Merge tag 'afs-fixes-20220802' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull AFS fixes from David Howells:
 "Fix AFS refcount handling.

  The first patch converts afs to use refcount_t for its refcounts and
  the second patch fixes afs_put_call() and afs_put_server() to save the
  values they're going to log in the tracepoint before decrementing the
  refcount"

* tag 'afs-fixes-20220802' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: Fix access after dec in put functions
  afs: Use refcount_t rather than atomic_t
 2022-08-09 10:08:08 -07:00
Jeff Layton
1a1e3aca9d fscache: add tracepoint when failing cookie 
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
 2022-08-09 14:13:59 +01:00
Linus Torvalds
507f811f20 More power management updates for 5.20-rc1 
- Fix return error code in mtk_cpu_dvfs_info_init (Yang Yingliang).
 
  - Minor cleanups and support for new boards for Qcom cpufreq drivers
    (Bryan O'Donoghue, Konrad Dybcio, Pierre Gondois, and Yicong Yang).
 
  - Fix sparse warnings for Tegra cpufreq driver (Viresh Kumar).
 
  - Make dev_pm_opp_set_regulators() accept NULL terminated list (Viresh
    Kumar).
 
  - Add dev_pm_opp_set_config() and friends and migrate other users and
    helpers to using them (Viresh Kumar).
 
  - Add support for multiple clocks for a device (Viresh Kumar and
    Krzysztof Kozlowski).
 
  - Configure resources before adding OPP table for Venus (Stanimir
    Varbanov).
 
  - Keep reference count up for opp->np and opp_table->np while they are
    still in use (Liang He).
 
  - Minor OPP cleanups (Viresh Kumar and Yang Li).
 
  - Add a trace event for cpuidle to track missed (too deep or too
    shallow) wakeups (Kajetan Puchalski).
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Merge tag 'pm-5.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These are ARM cpufreq updates and operating performance points (OPP)
  updates plus one cpuidle update adding a new trace point.

  Specifics:

   - Fix return error code in mtk_cpu_dvfs_info_init (Yang Yingliang).

   - Minor cleanups and support for new boards for Qcom cpufreq drivers
     (Bryan O'Donoghue, Konrad Dybcio, Pierre Gondois, and Yicong Yang).

   - Fix sparse warnings for Tegra cpufreq driver (Viresh Kumar).

   - Make dev_pm_opp_set_regulators() accept NULL terminated list
     (Viresh Kumar).

   - Add dev_pm_opp_set_config() and friends and migrate other users and
     helpers to using them (Viresh Kumar).

   - Add support for multiple clocks for a device (Viresh Kumar and
     Krzysztof Kozlowski).

   - Configure resources before adding OPP table for Venus (Stanimir
     Varbanov).

   - Keep reference count up for opp->np and opp_table->np while they
     are still in use (Liang He).

   - Minor OPP cleanups (Viresh Kumar and Yang Li).

   - Add a trace event for cpuidle to track missed (too deep or too
     shallow) wakeups (Kajetan Puchalski)"

* tag 'pm-5.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (55 commits)
  cpuidle: Add cpu_idle_miss trace event
  venus: pm_helpers: Fix warning in OPP during probe
  OPP: Don't drop opp->np reference while it is still in use
  OPP: Don't drop opp_table->np reference while it is still in use
  cpufreq: tegra194: Staticize struct tegra_cpufreq_soc instances
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM6375 compatible
  dt-bindings: opp: Add msm8939 to the compatible list
  dt-bindings: opp: Add missing compat devices
  dt-bindings: opp: opp-v2-kryo-cpu: Fix example binding checks
  cpufreq: Change order of online() CB and policy->cpus modification
  cpufreq: qcom-hw: Remove deprecated irq_set_affinity_hint() call
  cpufreq: qcom-hw: Disable LMH irq when disabling policy
  cpufreq: qcom-hw: Reset cancel_throttle when policy is re-enabled
  cpufreq: qcom-cpufreq-hw: use HZ_PER_KHZ macro in units.h
  cpufreq: mediatek: fix error return code in mtk_cpu_dvfs_info_init()
  OPP: Remove dev{m}_pm_opp_of_add_table_noclk()
  PM / devfreq: tegra30: Register config_clks helper
  OPP: Allow config_clks helper for single clk case
  OPP: Provide a simple implementation to configure multiple clocks
  OPP: Assert clk_count == 1 for single clk helpers
  ...
 2022-08-08 14:29:00 -07:00
Linus Torvalds
ea0c39260d 9p-for-5.20 
- a couple of fixes
 - add a tracepoint for fid refcounting
 - some cleanup/followup on fid lookup
 - some cleanup around req refcounting
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Merge tag '9p-for-5.20' of https://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:

 - a couple of fixes

 - add a tracepoint for fid refcounting

 - some cleanup/followup on fid lookup

 - some cleanup around req refcounting

* tag '9p-for-5.20' of https://github.com/martinetd/linux:
  net/9p: Initialize the iounit field during fid creation
  net: 9p: fix refcount leak in p9_read_work() error handling
  9p: roll p9_tag_remove into p9_req_put
  9p: Add client parameter to p9_req_put()
  9p: Drop kref usage
  9p: Fix some kernel-doc comments
  9p fid refcount: cleanup p9_fid_put calls
  9p fid refcount: add a 9p_fid_ref tracepoint
  9p fid refcount: add p9_fid_get/put wrappers
  9p: Fix minor typo in code comment
  9p: Remove unnecessary variable for old fids while walking from d_parent
  9p: Make the path walk logic more clear about when cloning is required
  9p: Track the root fid with its own variable during lookups
 2022-08-06 14:48:54 -07:00
Linus Torvalds
1d239c1eb8 IOMMU Updates for Linux v5.20/v6.0: 
Including:
 
 	- Most intrusive patch is small and changes the default
 	  allocation policy for DMA addresses. Before the change the
 	  allocator tried its best to find an address in the first 4GB.
 	  But that lead to performance problems when that space gets
 	  exhaused, and since most devices are capable of 64-bit DMA
 	  these days, we changed it to search in the full DMA-mask
 	  range from the beginning.  This change has the potential to
 	  uncover bugs elsewhere, in the kernel or the hardware. There
 	  is a Kconfig option and a command line option to restore the
 	  old behavior, but none of them is enabled by default.
 
 	- Add Robin Murphy as reviewer of IOMMU code and maintainer for
 	  the dma-iommu and iova code
 
 	- Chaning IOVA magazine size from 1032 to 1024 bytes to save
 	  memory
 
 	- Some core code cleanups and dead-code removal
 
 	- Support for ACPI IORT RMR node
 
 	- Support for multiple PCI domains in the AMD-Vi driver
 
 	- ARM SMMU changes from Will Deacon:
 
 	  - Add even more Qualcomm device-tree compatible strings
 
 	  - Support dumping of IMP DEF Qualcomm registers on TLB sync
 	    timeout
 
 	  - Fix reference count leak on device tree node in Qualcomm
 	    driver
 
 	- Intel VT-d driver updates from Lu Baolu:
 
 	  - Make intel-iommu.h private
 
 	  - Optimize the use of two locks
 
 	  - Extend the driver to support large-scale platforms
 
 	  - Cleanup some dead code
 
 	- MediaTek IOMMU refactoring and support for TTBR up to 35bit
 
 	- Basic support for Exynos SysMMU v7
 
 	- VirtIO IOMMU driver gets a map/unmap_pages() implementation
 
 	- Other smaller cleanups and fixes
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Merge tag 'iommu-updates-v5.20-or-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - The most intrusive patch is small and changes the default allocation
   policy for DMA addresses.

   Before the change the allocator tried its best to find an address in
   the first 4GB. But that lead to performance problems when that space
   gets exhaused, and since most devices are capable of 64-bit DMA these
   days, we changed it to search in the full DMA-mask range from the
   beginning.

   This change has the potential to uncover bugs elsewhere, in the
   kernel or the hardware. There is a Kconfig option and a command line
   option to restore the old behavior, but none of them is enabled by
   default.

 - Add Robin Murphy as reviewer of IOMMU code and maintainer for the
   dma-iommu and iova code

 - Chaning IOVA magazine size from 1032 to 1024 bytes to save memory

 - Some core code cleanups and dead-code removal

 - Support for ACPI IORT RMR node

 - Support for multiple PCI domains in the AMD-Vi driver

 - ARM SMMU changes from Will Deacon:
      - Add even more Qualcomm device-tree compatible strings
      - Support dumping of IMP DEF Qualcomm registers on TLB sync
        timeout
      - Fix reference count leak on device tree node in Qualcomm driver

 - Intel VT-d driver updates from Lu Baolu:
      - Make intel-iommu.h private
      - Optimize the use of two locks
      - Extend the driver to support large-scale platforms
      - Cleanup some dead code

 - MediaTek IOMMU refactoring and support for TTBR up to 35bit

 - Basic support for Exynos SysMMU v7

 - VirtIO IOMMU driver gets a map/unmap_pages() implementation

 - Other smaller cleanups and fixes

* tag 'iommu-updates-v5.20-or-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (116 commits)
  iommu/amd: Fix compile warning in init code
  iommu/amd: Add support for AVIC when SNP is enabled
  iommu/amd: Simplify and Consolidate Virtual APIC (AVIC) Enablement
  ACPI/IORT: Fix build error implicit-function-declaration
  drivers: iommu: fix clang -wformat warning
  iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop
  iommu/arm-smmu-qcom: Add SM6375 SMMU compatible
  dt-bindings: arm-smmu: Add compatible for Qualcomm SM6375
  MAINTAINERS: Add Robin Murphy as IOMMU SUBSYTEM reviewer
  iommu/amd: Do not support IOMMUv2 APIs when SNP is enabled
  iommu/amd: Do not support IOMMU_DOMAIN_IDENTITY after SNP is enabled
  iommu/amd: Set translation valid bit only when IO page tables are in use
  iommu/amd: Introduce function to check and enable SNP
  iommu/amd: Globally detect SNP support
  iommu/amd: Process all IVHDs before enabling IOMMU features
  iommu/amd: Introduce global variable for storing common EFR and EFR2
  iommu/amd: Introduce Support for Extended Feature 2 Register
  iommu/amd: Change macro for IOMMU control register bit shift to decimal value
  iommu/exynos: Enable default VM instance on SysMMU v7
  iommu/exynos: Add SysMMU v7 register set
  ...
 2022-08-06 10:42:38 -07:00
Linus Torvalds
3bd6e5854b asm-generic: updates for 6.0 
There are three independent sets of changes:
 
  - Sai Prakash Ranjan adds tracing support to the asm-generic
    version of the MMIO accessors, which is intended to help
    understand problems with device drivers and has been part
    of Qualcomm's vendor kernels for many years.
 
  - A patch from Sebastian Siewior to rework the handling of
    IRQ stacks in softirqs across architectures, which is
    needed for enabling PREEMPT_RT.
 
  - The last patch to remove the CONFIG_VIRT_TO_BUS option and
    some of the code behind that, after the last users of this
    old interface made it in through the netdev, scsi, media and
    staging trees.
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Merge tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "There are three independent sets of changes:

   - Sai Prakash Ranjan adds tracing support to the asm-generic version
     of the MMIO accessors, which is intended to help understand
     problems with device drivers and has been part of Qualcomm's vendor
     kernels for many years

   - A patch from Sebastian Siewior to rework the handling of IRQ stacks
     in softirqs across architectures, which is needed for enabling
     PREEMPT_RT

   - The last patch to remove the CONFIG_VIRT_TO_BUS option and some of
     the code behind that, after the last users of this old interface
     made it in through the netdev, scsi, media and staging trees"

* tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  uapi: asm-generic: fcntl: Fix typo 'the the' in comment
  arch/*/: remove CONFIG_VIRT_TO_BUS
  soc: qcom: geni: Disable MMIO tracing for GENI SE
  serial: qcom_geni_serial: Disable MMIO tracing for geni serial
  asm-generic/io: Add logging support for MMIO accessors
  KVM: arm64: Add a flag to disable MMIO trace for nVHE KVM
  lib: Add register read/write tracing support
  drm/meson: Fix overflow implicit truncation warnings
  irqchip/tegra: Fix overflow implicit truncation warnings
  coresight: etm4x: Use asm-generic IO memory barriers
  arm64: io: Use asm-generic high level MMIO accessors
  arch/*: Disable softirq stacks on PREEMPT_RT.
 2022-08-05 10:07:23 -07:00
Linus Torvalds
965a9d75e3 Tracing updates for 5.20 / 6.0 
- Runtime verification infrastructure
   This is the biggest change for this pull request. It introduces the
   runtime verification that is necessary for running Linux on safety
   critical systems. It allows for deterministic automata models to be
   inserted into the kernel that will attach to tracepoints, where the
   information on these tracepoints will move the model from state to state.
   If a state is encountered that does not belong to the model, it will then
   activate a given reactor, that could just inform the user or even panic
   the kernel (for which safety critical systems will detect and can recover
   from).
 
 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
   confused with "work in progress"), and Wakeup While Not Running (WWNR).
 
 - Added __vstring() helper to the TRACE_EVENT() macro to replace several
   vsnprintf() usages that were all doing it wrong.
 
 - eprobes now can have their event autogenerated when the event name is left
   off.
 
 - The rest is various cleanups and fixes.
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Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:

 - Runtime verification infrastructure

   This is the biggest change here. It introduces the runtime
   verification that is necessary for running Linux on safety critical
   systems.

   It allows for deterministic automata models to be inserted into the
   kernel that will attach to tracepoints, where the information on
   these tracepoints will move the model from state to state.

   If a state is encountered that does not belong to the model, it will
   then activate a given reactor, that could just inform the user or
   even panic the kernel (for which safety critical systems will detect
   and can recover from).

 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to
   be confused with "work in progress"), and Wakeup While Not Running
   (WWNR).

 - Added __vstring() helper to the TRACE_EVENT() macro to replace
   several vsnprintf() usages that were all doing it wrong.

 - eprobes now can have their event autogenerated when the event name is
   left off.

 - The rest is various cleanups and fixes.

* tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (50 commits)
  rv: Unlock on error path in rv_unregister_reactor()
  tracing: Use alignof__(struct {type b;}) instead of offsetof()
  tracing/eprobe: Show syntax error logs in error_log file
  scripts/tracing: Fix typo 'the the' in comment
  tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT
  tracing: Use free_trace_buffer() in allocate_trace_buffers()
  tracing: Use a struct alignof to determine trace event field alignment
  rv/reactor: Add the panic reactor
  rv/reactor: Add the printk reactor
  rv/monitor: Add the wwnr monitor
  rv/monitor: Add the wip monitor
  rv/monitor: Add the wip monitor skeleton created by dot2k
  Documentation/rv: Add deterministic automata instrumentation documentation
  Documentation/rv: Add deterministic automata monitor synthesis documentation
  tools/rv: Add dot2k
  Documentation/rv: Add deterministic automaton documentation
  tools/rv: Add dot2c
  Documentation/rv: Add a basic documentation
  rv/include: Add instrumentation helper functions
  rv/include: Add deterministic automata monitor definition via C macros
  ...
 2022-08-05 09:41:12 -07:00
Linus Torvalds
746fc76b82 SCSI misc on 20220804 
Updates to the usual drivers (ufs, qla2xx, target, lpfc, smartpqi,
 mpi3mr).  The main driver change that might cause issues on down the
 road is the conversion of some of our oldest surviving drivers to the
 DMA API (should only affect m68k).  The only major core change is the
 rework of async resume; the rest are either completely trivial or for
 updating deprecated APIs.
 
 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, qla2xx, target, lpfc, smartpqi,
  mpi3mr).

  The main driver change that might cause issues on down the road is the
  conversion of some of our oldest surviving drivers to the DMA API
  (should only affect m68k).

  The only major core change is the rework of async resume; the rest are
  either completely trivial or for updating deprecated APIs"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (195 commits)
  scsi: target: Remove XDWRITEREAD emulated support
  scsi: megaraid: Remove the static variable initialisation
  scsi: ch: Do not initialise statics to 0
  scsi: ufs: core: Fix spelling mistake "Cannnot" -> "Cannot"
  scsi: target: iscsi: Do not require target authentication
  scsi: target: iscsi: Allow AuthMethod=None
  scsi: target: iscsi: Support base64 in CHAP
  scsi: target: iscsi: Add support for extended CDB AHS
  scsi: ufs: dt-bindings: Add SC8280XP binding
  scsi: target: iscsi: Fix clang -Wformat warnings
  scsi: ufs: core: Read device property for ref clock
  scsi: libsas: Resume SAS host for phy reset or enable via sysfs
  scsi: hisi_sas: Modify v3 HW SATA completion error processing
  scsi: hisi_sas: Relocate DMA unmap of SMP task
  scsi: hisi_sas: Remove unnecessary variable to hold DMA map elements
  scsi: hisi_sas: Call hisi_sas_slave_configure() from slave_configure_v3_hw()
  scsi: mpi3mr: Delete a stray tab
  scsi: mpi3mr: Unlock on error path
  scsi: mpi3mr: Reduce VD queue depth on detecting throttling
  scsi: mpi3mr: Resource Based Metering
  ...
 2022-08-04 19:47:37 -07:00
Linus Torvalds
228dfe98a3 Char / Misc driver changes for 6.0-rc1 
Here is the large set of char and misc and other driver subsystem
 changes for 6.0-rc1.
 
 Highlights include:
 	- large set of IIO driver updates, additions, and cleanups
 	- new habanalabs device support added (loads of register maps
 	  much like GPUs have)
 	- soundwire driver updates
 	- phy driver updates
 	- slimbus driver updates
 	- tiny virt driver fixes and updates
 	- misc driver fixes and updates
 	- interconnect driver updates
 	- hwtracing driver updates
 	- fpga driver updates
 	- extcon driver updates
 	- firmware driver updates
 	- counter driver update
 	- mhi driver fixes and updates
 	- binder driver fixes and updates
 	- speakup driver fixes
 
 Full details are in the long shortlog contents.
 
 All of these have been in linux-next for a while without any reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.0-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 large set of char and misc and other driver subsystem
  changes for 6.0-rc1.

  Highlights include:

   - large set of IIO driver updates, additions, and cleanups

   - new habanalabs device support added (loads of register maps much
     like GPUs have)

   - soundwire driver updates

   - phy driver updates

   - slimbus driver updates

   - tiny virt driver fixes and updates

   - misc driver fixes and updates

   - interconnect driver updates

   - hwtracing driver updates

   - fpga driver updates

   - extcon driver updates

   - firmware driver updates

   - counter driver update

   - mhi driver fixes and updates

   - binder driver fixes and updates

   - speakup driver fixes

  All of these have been in linux-next for a while without any reported
  problems"

* tag 'char-misc-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (634 commits)
  drivers: lkdtm: fix clang -Wformat warning
  char: remove VR41XX related char driver
  misc: Mark MICROCODE_MINOR unused
  spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
  dt-bindings: iio: adc: Add compatible for MT8188
  iio: light: isl29028: Fix the warning in isl29028_remove()
  iio: accel: sca3300: Extend the trigger buffer from 16 to 32 bytes
  iio: fix iio_format_avail_range() printing for none IIO_VAL_INT
  iio: adc: max1027: unlock on error path in max1027_read_single_value()
  iio: proximity: sx9324: add empty line in front of bullet list
  iio: magnetometer: hmc5843: Remove duplicate 'the'
  iio: magn: yas530: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: magnetometer: ak8974: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: veml6030: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: vcnl4035: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: vcnl4000: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: tsl2591: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()
  iio: light: tsl2583: Use DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr()
  iio: light: isl29028: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()
  iio: light: gp2ap002: Switch to DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr()
  ...
 2022-08-04 11:05:48 -07:00
Linus Torvalds
f86d1fbbe7 Networking changes for 6.0. 
Core
 ----
 
  - Refactor the forward memory allocation to better cope with memory
    pressure with many open sockets, moving from a per socket cache to
    a per-CPU one
 
  - Replace rwlocks with RCU for better fairness in ping, raw sockets
    and IP multicast router.
 
  - Network-side support for IO uring zero-copy send.
 
  - A few skb drop reason improvements, including codegen the source file
    with string mapping instead of using macro magic.
 
  - Rename reference tracking helpers to a more consistent
    netdev_* schema.
 
  - Adapt u64_stats_t type to address load/store tearing issues.
 
  - Refine debug helper usage to reduce the log noise caused by bots.
 
 BPF
 ---
  - Improve socket map performance, avoiding skb cloning on read
    operation.
 
  - Add support for 64 bits enum, to match types exposed by kernel.
 
  - Introduce support for sleepable uprobes program.
 
  - Introduce support for enum textual representation in libbpf.
 
  - New helpers to implement synproxy with eBPF/XDP.
 
  - Improve loop performances, inlining indirect calls when
    possible.
 
  - Removed all the deprecated libbpf APIs.
 
  - Implement new eBPF-based LSM flavor.
 
  - Add type match support, which allow accurate queries to the
    eBPF used types.
 
  - A few TCP congetsion control framework usability improvements.
 
  - Add new infrastructure to manipulate CT entries via eBPF programs.
 
  - Allow for livepatch (KLP) and BPF trampolines to attach to the same
    kernel function.
 
 Protocols
 ---------
 
  - Introduce per network namespace lookup tables for unix sockets,
    increasing scalability and reducing contention.
 
  - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.
 
  - Add support to forciby close TIME_WAIT TCP sockets via user-space
    tools.
 
  - Significant performance improvement for the TLS 1.3 receive path,
    both for zero-copy and not-zero-copy.
 
  - Support for changing the initial MTPCP subflow priority/backup
    status
 
  - Introduce virtually contingus buffers for sockets over RDMA,
    to cope better with memory pressure.
 
  - Extend CAN ethtool support with timestamping capabilities
 
  - Refactor CAN build infrastructure to allow building only the needed
    features.
 
 Driver API
 ----------
 
  - Remove devlink mutex to allow parallel commands on multiple links.
 
  - Add support for pause stats in distributed switch.
 
  - Implement devlink helpers to query and flash line cards.
 
  - New helper for phy mode to register conversion.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.
 
  - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.
 
  - Ethernet DSA driver for the Microchip LAN937x switch.
 
  - Ethernet PHY driver for the Aquantia AQR113C EPHY.
 
  - CAN driver for the OBD-II ELM327 interface.
 
  - CAN driver for RZ/N1 SJA1000 CAN controller.
 
  - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.
 
 Drivers
 -------
 
  - Intel Ethernet NICs:
    - i40e: add support for vlan pruning
    - i40e: add support for XDP framented packets
    - ice: improved vlan offload support
    - ice: add support for PPPoE offload
 
  - Mellanox Ethernet (mlx5)
    - refactor packet steering offload for performance and scalability
    - extend support for TC offload
    - refactor devlink code to clean-up the locking schema
    - support stacked vlans for bridge offloads
    - use TLS objects pool to improve connection rate
 
  - Netronome Ethernet NICs (nfp):
    - extend support for IPv6 fields mangling offload
    - add support for vepa mode in HW bridge
    - better support for virtio data path acceleration (VDPA)
    - enable TSO by default
 
  - Microsoft vNIC driver (mana)
    - add support for XDP redirect
 
  - Others Ethernet drivers:
    - bonding: add per-port priority support
    - microchip lan743x: extend phy support
    - Fungible funeth: support UDP segmentation offload and XDP xmit
    - Solarflare EF100: add support for virtual function representors
    - MediaTek SoC: add XDP support
 
  - Mellanox Ethernet/IB switch (mlxsw):
    - dropped support for unreleased H/W (XM router).
    - improved stats accuracy
    - unified bridge model coversion improving scalability
      (parts 1-6)
    - support for PTP in Spectrum-2 asics
 
  - Broadcom PHYs
    - add PTP support for BCM54210E
    - add support for the BCM53128 internal PHY
 
  - Marvell Ethernet switches (prestera):
    - implement support for multicast forwarding offload
 
  - Embedded Ethernet switches:
    - refactor OcteonTx MAC filter for better scalability
    - improve TC H/W offload for the Felix driver
    - refactor the Microchip ksz8 and ksz9477 drivers to share
      the probe code (parts 1, 2), add support for phylink
      mac configuration
 
  - Other WiFi:
    - Microchip wilc1000: diable WEP support and enable WPA3
    - Atheros ath10k: encapsulation offload support
 
 Old code removal:
 
  - Neterion vxge ethernet driver: this is untouched since more than
    10 years.
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Paolo Abeni:
 "Core:

   - Refactor the forward memory allocation to better cope with memory
     pressure with many open sockets, moving from a per socket cache to
     a per-CPU one

   - Replace rwlocks with RCU for better fairness in ping, raw sockets
     and IP multicast router.

   - Network-side support for IO uring zero-copy send.

   - A few skb drop reason improvements, including codegen the source
     file with string mapping instead of using macro magic.

   - Rename reference tracking helpers to a more consistent netdev_*
     schema.

   - Adapt u64_stats_t type to address load/store tearing issues.

   - Refine debug helper usage to reduce the log noise caused by bots.

  BPF:

   - Improve socket map performance, avoiding skb cloning on read
     operation.

   - Add support for 64 bits enum, to match types exposed by kernel.

   - Introduce support for sleepable uprobes program.

   - Introduce support for enum textual representation in libbpf.

   - New helpers to implement synproxy with eBPF/XDP.

   - Improve loop performances, inlining indirect calls when possible.

   - Removed all the deprecated libbpf APIs.

   - Implement new eBPF-based LSM flavor.

   - Add type match support, which allow accurate queries to the eBPF
     used types.

   - A few TCP congetsion control framework usability improvements.

   - Add new infrastructure to manipulate CT entries via eBPF programs.

   - Allow for livepatch (KLP) and BPF trampolines to attach to the same
     kernel function.

  Protocols:

   - Introduce per network namespace lookup tables for unix sockets,
     increasing scalability and reducing contention.

   - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.

   - Add support to forciby close TIME_WAIT TCP sockets via user-space
     tools.

   - Significant performance improvement for the TLS 1.3 receive path,
     both for zero-copy and not-zero-copy.

   - Support for changing the initial MTPCP subflow priority/backup
     status

   - Introduce virtually contingus buffers for sockets over RDMA, to
     cope better with memory pressure.

   - Extend CAN ethtool support with timestamping capabilities

   - Refactor CAN build infrastructure to allow building only the needed
     features.

  Driver API:

   - Remove devlink mutex to allow parallel commands on multiple links.

   - Add support for pause stats in distributed switch.

   - Implement devlink helpers to query and flash line cards.

   - New helper for phy mode to register conversion.

  New hardware / drivers:

   - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.

   - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.

   - Ethernet DSA driver for the Microchip LAN937x switch.

   - Ethernet PHY driver for the Aquantia AQR113C EPHY.

   - CAN driver for the OBD-II ELM327 interface.

   - CAN driver for RZ/N1 SJA1000 CAN controller.

   - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.

  Drivers:

   - Intel Ethernet NICs:
      - i40e: add support for vlan pruning
      - i40e: add support for XDP framented packets
      - ice: improved vlan offload support
      - ice: add support for PPPoE offload

   - Mellanox Ethernet (mlx5)
      - refactor packet steering offload for performance and scalability
      - extend support for TC offload
      - refactor devlink code to clean-up the locking schema
      - support stacked vlans for bridge offloads
      - use TLS objects pool to improve connection rate

   - Netronome Ethernet NICs (nfp):
      - extend support for IPv6 fields mangling offload
      - add support for vepa mode in HW bridge
      - better support for virtio data path acceleration (VDPA)
      - enable TSO by default

   - Microsoft vNIC driver (mana)
      - add support for XDP redirect

   - Others Ethernet drivers:
      - bonding: add per-port priority support
      - microchip lan743x: extend phy support
      - Fungible funeth: support UDP segmentation offload and XDP xmit
      - Solarflare EF100: add support for virtual function representors
      - MediaTek SoC: add XDP support

   - Mellanox Ethernet/IB switch (mlxsw):
      - dropped support for unreleased H/W (XM router).
      - improved stats accuracy
      - unified bridge model coversion improving scalability (parts 1-6)
      - support for PTP in Spectrum-2 asics

   - Broadcom PHYs
      - add PTP support for BCM54210E
      - add support for the BCM53128 internal PHY

   - Marvell Ethernet switches (prestera):
      - implement support for multicast forwarding offload

   - Embedded Ethernet switches:
      - refactor OcteonTx MAC filter for better scalability
      - improve TC H/W offload for the Felix driver
      - refactor the Microchip ksz8 and ksz9477 drivers to share the
        probe code (parts 1, 2), add support for phylink mac
        configuration

   - Other WiFi:
      - Microchip wilc1000: diable WEP support and enable WPA3
      - Atheros ath10k: encapsulation offload support

  Old code removal:

   - Neterion vxge ethernet driver: this is untouched since more than 10 years"

* tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1890 commits)
  doc: sfp-phylink: Fix a broken reference
  wireguard: selftests: support UML
  wireguard: allowedips: don't corrupt stack when detecting overflow
  wireguard: selftests: update config fragments
  wireguard: ratelimiter: use hrtimer in selftest
  net/mlx5e: xsk: Discard unaligned XSK frames on striding RQ
  net: usb: ax88179_178a: Bind only to vendor-specific interface
  selftests: net: fix IOAM test skip return code
  net: usb: make USB_RTL8153_ECM non user configurable
  net: marvell: prestera: remove reduntant code
  octeontx2-pf: Reduce minimum mtu size to 60
  net: devlink: Fix missing mutex_unlock() call
  net/tls: Remove redundant workqueue flush before destroy
  net: txgbe: Fix an error handling path in txgbe_probe()
  net: dsa: Fix spelling mistakes and cleanup code
  Documentation: devlink: add add devlink-selftests to the table of contents
  dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
  net: ionic: fix error check for vlan flags in ionic_set_nic_features()
  net: ice: fix error NETIF_F_HW_VLAN_CTAG_FILTER check in ice_vsi_sync_fltr()
  nfp: flower: add support for tunnel offload without key ID
  ...
 2022-08-03 16:29:08 -07:00
Linus Torvalds
353767e4aa for-5.20-tag 
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Merge tag 'for-5.20-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "This brings some long awaited changes, the send protocol bump,
  otherwise lots of small improvements and fixes. The main core part is
  reworking bio handling, cleaning up the submission and endio and
  improving error handling.

  There are some changes outside of btrfs adding helpers or updating
  API, listed at the end of the changelog.

  Features:

   - sysfs:
      - export chunk size, in debug mode add tunable for setting its size
      - show zoned among features (was only in debug mode)
      - show commit stats (number, last/max/total duration)

   - send protocol updated to 2
      - new commands:
         - ability write larger data chunks than 64K
         - send raw compressed extents (uses the encoded data ioctls),
           ie. no decompression on send side, no compression needed on
           receive side if supported
         - send 'otime' (inode creation time) among other timestamps
         - send file attributes (a.k.a file flags and xflags)
      - this is first version bump, backward compatibility on send and
        receive side is provided
      - there are still some known and wanted commands that will be
        implemented in the near future, another version bump will be
        needed, however we want to minimize that to avoid causing
        usability issues

   - print checksum type and implementation at mount time

   - don't print some messages at mount (mentioned as people asked about
     it), we want to print messages namely for new features so let's
     make some space for that
      - big metadata - this has been supported for a long time and is
        not a feature that's worth mentioning
      - skinny metadata - same reason, set by default by mkfs

  Performance improvements:

   - reduced amount of reserved metadata for delayed items
      - when inserted items can be batched into one leaf
      - when deleting batched directory index items
      - when deleting delayed items used for deletion
      - overall improved count of files/sec, decreased subvolume lock
        contention

   - metadata item access bounds checker micro-optimized, with a few
     percent of improved runtime for metadata-heavy operations

   - increase direct io limit for read to 256 sectors, improved
     throughput by 3x on sample workload

  Notable fixes:

   - raid56
      - reduce parity writes, skip sectors of stripe when there are no
        data updates
      - restore reading from on-disk data instead of using stripe cache,
        this reduces chances to damage correct data due to RMW cycle

   - refuse to replay log with unknown incompat read-only feature bit
     set

   - zoned
      - fix page locking when COW fails in the middle of allocation
      - improved tracking of active zones, ZNS drives may limit the
        number and there are ENOSPC errors due to that limit and not
        actual lack of space
      - adjust maximum extent size for zone append so it does not cause
        late ENOSPC due to underreservation

   - mirror reading error messages show the mirror number

   - don't fallback to buffered IO for NOWAIT direct IO writes, we don't
     have the NOWAIT semantics for buffered io yet

   - send, fix sending link commands for existing file paths when there
     are deleted and created hardlinks for same files

   - repair all mirrors for profiles with more than 1 copy (raid1c34)

   - fix repair of compressed extents, unify where error detection and
     repair happen

  Core changes:

   - bio completion cleanups
      - don't double defer compression bios
      - simplify endio workqueues
      - add more data to btrfs_bio to avoid allocation for read requests
      - rework bio error handling so it's same what block layer does,
        the submission works and errors are consumed in endio
      - when asynchronous bio offload fails fall back to synchronous
        checksum calculation to avoid errors under writeback or memory
        pressure

   - new trace points
      - raid56 events
      - ordered extent operations

   - super block log_root_transid deprecated (never used)

   - mixed_backref and big_metadata sysfs feature files removed, they've
     been default for sufficiently long time, there are no known users
     and mixed_backref could be confused with mixed_groups

  Non-btrfs changes, API updates:

   - minor highmem API update to cover const arguments

   - switch all kmap/kmap_atomic to kmap_local

   - remove redundant flush_dcache_page()

   - address_space_operations::writepage callback removed

   - add bdev_max_segments() helper"

* tag 'for-5.20-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (163 commits)
  btrfs: don't call btrfs_page_set_checked in finish_compressed_bio_read
  btrfs: fix repair of compressed extents
  btrfs: remove the start argument to check_data_csum and export
  btrfs: pass a btrfs_bio to btrfs_repair_one_sector
  btrfs: simplify the pending I/O counting in struct compressed_bio
  btrfs: repair all known bad mirrors
  btrfs: merge btrfs_dev_stat_print_on_error with its only caller
  btrfs: join running log transaction when logging new name
  btrfs: simplify error handling in btrfs_lookup_dentry
  btrfs: send: always use the rbtree based inode ref management infrastructure
  btrfs: send: fix sending link commands for existing file paths
  btrfs: send: introduce recorded_ref_alloc and recorded_ref_free
  btrfs: zoned: wait until zone is finished when allocation didn't progress
  btrfs: zoned: write out partially allocated region
  btrfs: zoned: activate necessary block group
  btrfs: zoned: activate metadata block group on flush_space
  btrfs: zoned: disable metadata overcommit for zoned
  btrfs: zoned: introduce space_info->active_total_bytes
  btrfs: zoned: finish least available block group on data bg allocation
  btrfs: let can_allocate_chunk return error
  ...
 2022-08-03 14:54:52 -07:00
Kajetan Puchalski
6ab4b19900 cpuidle: Add cpu_idle_miss trace event 
Add a trace event for cpuidle to track missed (too deep or too shallow)
wakeups.

After each wakeup, CPUIdle already computes whether the entered state was
optimal, above or below the desired one and updates the relevant
counters. This patch makes it possible to trace those events in addition
to just reading the counters.

The patterns of types and percentages of misses across different
workloads appear to be very consistent. This makes the trace event very
useful for comparing the relative correctness of different CPUIdle
governors for different types of workloads, or for finding the
optimal governor for a given device.

Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 2022-08-03 17:50:58 +02:00
Linus Torvalds
c013d0af81 for-5.20/block-2022-07-29 
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Merge tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Improve the type checking of request flags (Bart)

 - Ensure queue mapping for a single queues always picks the right queue
   (Bart)

 - Sanitize the io priority handling (Jan)

 - rq-qos race fix (Jinke)

 - Reserved tags handling improvements (John)

 - Separate memory alignment from file/disk offset aligment for O_DIRECT
   (Keith)

 - Add new ublk driver, userspace block driver using io_uring for
   communication with the userspace backend (Ming)

 - Use try_cmpxchg() to cleanup the code in various spots (Uros)

 - Finally remove bdevname() (Christoph)

 - Clean up the zoned device handling (Christoph)

 - Clean up independent access range support (Christoph)

 - Clean up and improve block sysfs handling (Christoph)

 - Clean up and improve teardown of block devices.

   This turns the usual two step process into something that is simpler
   to implement and handle in block drivers (Christoph)

 - Clean up chunk size handling (Christoph)

 - Misc cleanups and fixes (Bart, Bo, Dan, GuoYong, Jason, Keith, Liu,
   Ming, Sebastian, Yang, Ying)

* tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block: (178 commits)
  ublk_drv: fix double shift bug
  ublk_drv: make sure that correct flags(features) returned to userspace
  ublk_drv: fix error handling of ublk_add_dev
  ublk_drv: fix lockdep warning
  block: remove __blk_get_queue
  block: call blk_mq_exit_queue from disk_release for never added disks
  blk-mq: fix error handling in __blk_mq_alloc_disk
  ublk: defer disk allocation
  ublk: rewrite ublk_ctrl_get_queue_affinity to not rely on hctx->cpumask
  ublk: fold __ublk_create_dev into ublk_ctrl_add_dev
  ublk: cleanup ublk_ctrl_uring_cmd
  ublk: simplify ublk_ch_open and ublk_ch_release
  ublk: remove the empty open and release block device operations
  ublk: remove UBLK_IO_F_PREFLUSH
  ublk: add a MAINTAINERS entry
  block: don't allow the same type rq_qos add more than once
  mmc: fix disk/queue leak in case of adding disk failure
  ublk_drv: fix an IS_ERR() vs NULL check
  ublk: remove UBLK_IO_F_INTEGRITY
  ublk_drv: remove unneeded semicolon
  ...
 2022-08-02 13:46:35 -07:00
Linus Torvalds
98e2474640 for-5.20/io_uring-buffered-writes-2022-07-29 
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Merge tag 'for-5.20/io_uring-buffered-writes-2022-07-29' of git://git.kernel.dk/linux-block

Pull io_uring buffered writes support from Jens Axboe:
 "This contains support for buffered writes, specifically for XFS. btrfs
  is in progress, will be coming in the next release.

  io_uring does support buffered writes on any file type, but since the
  buffered write path just always -EAGAIN (or -EOPNOTSUPP) any attempt
  to do so if IOCB_NOWAIT is set, any buffered write will effectively be
  handled by io-wq offload. This isn't very efficient, and we even have
  specific code in io-wq to serialize buffered writes to the same inode
  to avoid further inefficiencies with thread offload.

  This is particularly sad since most buffered writes don't block, they
  simply copy data to a page and dirty it. With this pull request, we
  can handle buffered writes a lot more effiently.

  If balance_dirty_pages() needs to block, we back off on writes as
  indicated.

  This improves buffered write support by 2-3x.

  Jan Kara helped with the mm bits for this, and Stefan handled the
  fs/iomap/xfs/io_uring parts of it"

* tag 'for-5.20/io_uring-buffered-writes-2022-07-29' of git://git.kernel.dk/linux-block:
  mm: honor FGP_NOWAIT for page cache page allocation
  xfs: Add async buffered write support
  xfs: Specify lockmode when calling xfs_ilock_for_iomap()
  io_uring: Add tracepoint for short writes
  io_uring: fix issue with io_write() not always undoing sb_start_write()
  io_uring: Add support for async buffered writes
  fs: Add async write file modification handling.
  fs: Split off inode_needs_update_time and __file_update_time
  fs: add __remove_file_privs() with flags parameter
  fs: add a FMODE_BUF_WASYNC flags for f_mode
  iomap: Return -EAGAIN from iomap_write_iter()
  iomap: Add async buffered write support
  iomap: Add flags parameter to iomap_page_create()
  mm: Add balance_dirty_pages_ratelimited_flags() function
  mm: Move updates of dirty_exceeded into one place
  mm: Move starting of background writeback into the main balancing loop
 2022-08-02 13:27:23 -07:00
Linus Torvalds
b349b1181d for-5.20/io_uring-2022-07-29 
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Merge tag 'for-5.20/io_uring-2022-07-29' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:

 - As per (valid) complaint in the last merge window, fs/io_uring.c has
   grown quite large these days. io_uring isn't really tied to fs
   either, as it supports a wide variety of functionality outside of
   that.

   Move the code to io_uring/ and split it into files that either
   implement a specific request type, and split some code into helpers
   as well. The code is organized a lot better like this, and io_uring.c
   is now < 4K LOC (me).

 - Deprecate the epoll_ctl opcode. It'll still work, just trigger a
   warning once if used. If we don't get any complaints on this, and I
   don't expect any, then we can fully remove it in a future release
   (me).

 - Improve the cancel hash locking (Hao)

 - kbuf cleanups (Hao)

 - Efficiency improvements to the task_work handling (Dylan, Pavel)

 - Provided buffer improvements (Dylan)

 - Add support for recv/recvmsg multishot support. This is similar to
   the accept (or poll) support for have for multishot, where a single
   SQE can trigger everytime data is received. For applications that
   expect to do more than a few receives on an instantiated socket, this
   greatly improves efficiency (Dylan).

 - Efficiency improvements for poll handling (Pavel)

 - Poll cancelation improvements (Pavel)

 - Allow specifiying a range for direct descriptor allocations (Pavel)

 - Cleanup the cqe32 handling (Pavel)

 - Move io_uring types to greatly cleanup the tracing (Pavel)

 - Tons of great code cleanups and improvements (Pavel)

 - Add a way to do sync cancelations rather than through the sqe -> cqe
   interface, as that's a lot easier to use for some use cases (me).

 - Add support to IORING_OP_MSG_RING for sending direct descriptors to a
   different ring. This avoids the usually problematic SCM case, as we
   disallow those. (me)

 - Make the per-command alloc cache we use for apoll generic, place
   limits on it, and use it for netmsg as well (me).

 - Various cleanups (me, Michal, Gustavo, Uros)

* tag 'for-5.20/io_uring-2022-07-29' of git://git.kernel.dk/linux-block: (172 commits)
  io_uring: ensure REQ_F_ISREG is set async offload
  net: fix compat pointer in get_compat_msghdr()
  io_uring: Don't require reinitable percpu_ref
  io_uring: fix types in io_recvmsg_multishot_overflow
  io_uring: Use atomic_long_try_cmpxchg in __io_account_mem
  io_uring: support multishot in recvmsg
  net: copy from user before calling __get_compat_msghdr
  net: copy from user before calling __copy_msghdr
  io_uring: support 0 length iov in buffer select in compat
  io_uring: fix multishot ending when not polled
  io_uring: add netmsg cache
  io_uring: impose max limit on apoll cache
  io_uring: add abstraction around apoll cache
  io_uring: move apoll cache to poll.c
  io_uring: consolidate hash_locked io-wq handling
  io_uring: clear REQ_F_HASH_LOCKED on hash removal
  io_uring: don't race double poll setting REQ_F_ASYNC_DATA
  io_uring: don't miss setting REQ_F_DOUBLE_POLL
  io_uring: disable multishot recvmsg
  io_uring: only trace one of complete or overflow
  ...
 2022-08-02 13:20:44 -07:00
Steven Rostedt (Google)
09794a5a6c tracing: Use alignof__(struct {type b;}) instead of offsetof() 
Simplify:

  #define ALIGN_STRUCTFIELD(type) ((int)(offsetof(struct {char a; type b;}, b)))

with

  #define  ALIGN_STRUCTFIELD(type) __alignof__(struct {type b;})

Which works just the same.

Link: https://lore.kernel.org/all/a7d202457150472588df0bd3b7334b3f@AcuMS.aculab.com/
Link: https://lkml.kernel.org/r/20220802154412.513c50e3@gandalf.local.home

Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-08-02 16:01:12 -04:00
Linus Torvalds
c1dbe9a1c8 Thermal control updates for 5.20-rc1 
- Consolidate the thermal core code by beginning to move the thermal
    trip structure from the thermal OF code as a generic structure to be
    used by the different sensors when registering a thermal zone
    (Daniel Lezcano).
 
  - Make per cpufreq / devfreq cooling device ops instead of using a
    global variable, fix comments and rework the trace information
    (Lukasz Luba).
 
  - Add the include/dt-bindings/thermal.h under the area covered by the
    thermal maintainer in the MAINTAINERS file (Lukas Bulwahn).
 
  - Improve the error output by giving the sensor identification when a
    thermal zone failed to initialize, the DT bindings by changing the
    positive logic and adding the r8a779f0 support on the rcar3 (Wolfram
    Sang).
 
  - Convert the QCom tsens DT binding to the dtsformat format (Krzysztof
    Kozlowski).
 
  - Remove the pointless get_trend() function in the QCom, Ux500 and
    tegra thermal drivers, along with the unused DROP_FULL and
    RAISE_FULL trends definitions. Simplify the code by using clamp()
    macros (Daniel Lezcano).
 
  - Fix ref_table memory leak at probe time on the k3_j72xx bandgap
    (Bryan Brattlof).
 
  - Fix array underflow in prep_lookup_table (Dan Carpenter).
 
  - Add static annotation to the k3_j72xx_bandgap_j7* data structure
    (Jin Xiaoyun).
 
  - Fix typos in comments detected on sun8i by Coccinelle (Julia
    Lawall).
 
  - Fix typos in comments on rzg2l (Biju Das).
 
  - Remove as unnecessary call to dev_err() as the error is already
    printed by the failing function on u8500 (Yang Li).
 
  - Register the thermal zones as hwmon sensors for the Qcom thermal
    sensors (Dmitry Baryshkov).
 
  - Fix 'tmon' tool compilation issue by adding phtread.h include
    (Markus Mayer).
 
  - Fix typo in the comments for the 'tmon' tool (Slark Xiao).
 
  - Make the thermal core use ida_alloc()/free() directly instead of
    ida_simple_get()/ida_simple_remove() that have been deprecated
    (keliu).
 
  - Drop ACPI_FADT_LOW_POWER_S0 check from the Intel PCH thermal control
    driver (Rafael Wysocki).
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Merge tag 'thermal-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "These start a rework of the handling of trip points in the thermal
  core, improve the cpufreq/devfreq cooling device handling, update some
  thermal control drivers and the tmon utility and clean up code.

  Specifics:

   - Consolidate the thermal core code by beginning to move the thermal
     trip structure from the thermal OF code as a generic structure to
     be used by the different sensors when registering a thermal zone
     (Daniel Lezcano).

   - Make per cpufreq / devfreq cooling device ops instead of using a
     global variable, fix comments and rework the trace information
     (Lukasz Luba).

   - Add the include/dt-bindings/thermal.h under the area covered by the
     thermal maintainer in the MAINTAINERS file (Lukas Bulwahn).

   - Improve the error output by giving the sensor identification when a
     thermal zone failed to initialize, the DT bindings by changing the
     positive logic and adding the r8a779f0 support on the rcar3
     (Wolfram Sang).

   - Convert the QCom tsens DT binding to the dtsformat format
     (Krzysztof Kozlowski).

   - Remove the pointless get_trend() function in the QCom, Ux500 and
     tegra thermal drivers, along with the unused DROP_FULL and
     RAISE_FULL trends definitions. Simplify the code by using clamp()
     macros (Daniel Lezcano).

   - Fix ref_table memory leak at probe time on the k3_j72xx bandgap
     (Bryan Brattlof).

   - Fix array underflow in prep_lookup_table (Dan Carpenter).

   - Add static annotation to the k3_j72xx_bandgap_j7* data structure
     (Jin Xiaoyun).

   - Fix typos in comments detected on sun8i by Coccinelle (Julia
     Lawall).

   - Fix typos in comments on rzg2l (Biju Das).

   - Remove as unnecessary call to dev_err() as the error is already
     printed by the failing function on u8500 (Yang Li).

   - Register the thermal zones as hwmon sensors for the Qcom thermal
     sensors (Dmitry Baryshkov).

   - Fix 'tmon' tool compilation issue by adding phtread.h include
     (Markus Mayer).

   - Fix typo in the comments for the 'tmon' tool (Slark Xiao).

   - Make the thermal core use ida_alloc()/free() directly instead of
     ida_simple_get()/ida_simple_remove() that have been deprecated
     (keliu).

   - Drop ACPI_FADT_LOW_POWER_S0 check from the Intel PCH thermal
     control driver (Rafael Wysocki)"

* tag 'thermal-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (39 commits)
  thermal/of: Initialize trip points separately
  thermal/of: Use thermal trips stored in the thermal zone
  thermal/core: Add thermal_trip in thermal_zone
  thermal/core: Rename 'trips' to 'num_trips'
  thermal/core: Move thermal_set_delay_jiffies to static
  thermal/core: Remove unneeded EXPORT_SYMBOLS
  thermal/of: Move thermal_trip structure to thermal.h
  thermal/of: Remove the device node pointer for thermal_trip
  thermal/of: Replace device node match with device node search
  thermal/core: Remove duplicate information when an error occurs
  thermal/core: Avoid calling ->get_trip_temp() unnecessarily
  thermal/tools/tmon: Fix typo 'the the' in comment
  thermal/tools/tmon: Include pthread and time headers in tmon.h
  thermal/ti-soc-thermal: Fix comment typo
  thermal/drivers/qcom/spmi-adc-tm5: Register thermal zones as hwmon sensors
  thermal/drivers/qcom/temp-alarm: Register thermal zones as hwmon sensors
  thermal/drivers/u8500: Remove unnecessary print function dev_err()
  thermal/drivers/rzg2l: Fix comments
  thermal/drivers/sun8i: Fix typo in comment
  thermal/drivers/k3_j72xx_bandgap: Make k3_j72xx_bandgap_j721e_data and k3_j72xx_bandgap_j7200_data static
  ...
 2022-08-02 11:27:53 -07:00
Linus Torvalds
a771ea6413 Power management updates for 5.20-rc1 
- Make cpufreq_show_cpus() more straightforward (Viresh Kumar).
 
  - Drop unnecessary CPU hotplug locking from store() used by cpufreq
    sysfs attributes (Viresh Kumar).
 
  - Make the ACPI cpufreq driver support the boost control interface on
    Zhaoxin/Centaur processors (Tony W Wang-oc).
 
  - Print a warning message on attempts to free an active cpufreq policy
    which should never happen (Viresh Kumar).
 
  - Fix grammar in the Kconfig help text for the loongson2 cpufreq
    driver (Randy Dunlap).
 
  - Use cpumask_var_t for an on-stack CPU mask in the ondemand cpufreq
    governor (Zhao Liu).
 
  - Add trace points for guest_halt_poll_ns grow/shrink to the haltpoll
    cpuidle driver (Eiichi Tsukata).
 
  - Modify intel_idle to treat C1 and C1E as independent idle states on
    Sapphire Rapids (Artem Bityutskiy).
 
  - Extend support for wakeirq to callback wrappers used during system
    suspend and resume (Ulf Hansson).
 
  - Defer waiting for device probe before loading a hibernation image
    till the first actual device access to avoid possible deadlocks
    reported by syzbot (Tetsuo Handa).
 
  - Unify device_init_wakeup() for PM_SLEEP and !PM_SLEEP (Bjorn
    Helgaas).
 
  - Add Raptor Lake-P to the list of processors supported by the Intel
    RAPL driver (George D Sworo).
 
  - Add Alder Lake-N and Raptor Lake-P to the list of processors for
    which Power Limit4 is supported in the Intel RAPL driver (Sumeet
    Pawnikar).
 
  - Make pm_genpd_remove() check genpd_debugfs_dir against NULL before
    attempting to remove it (Hsin-Yi Wang).
 
  - Change the Energy Model code to represent power in micro-Watts and
    adjust its users accordingly (Lukasz Luba).
 
  - Add new devfreq driver for Mediatek CCI (Cache Coherent
    Interconnect) (Johnson Wang).
 
  - Convert the Samsung Exynos SoC Bus bindings to DT schema of
    exynos-bus.c (Krzysztof Kozlowski).
 
  - Address kernel-doc warnings by adding the description for unused
    fucntion parameters in devfreq core (Mauro Carvalho Chehab).
 
  - Use NULL to pass a null pointer rather than zero according to the
    function propotype in imx-bus.c (Colin Ian King).
 
  - Print error message instead of error interger value in
    tegra30-devfreq.c (Dmitry Osipenko).
 
  - Add checks to prevent setting negative frequency QoS limits for
    CPUs (Shivnandan Kumar).
 
  - Update the pm-graph suite of utilities to the latest revision 5.9
    including multiple improvements (Todd Brandt).
 
  - Drop pme_interrupt reference from the PCI power management
    documentation (Mario Limonciello).
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Merge tag 'pm-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These are mostly minor improvements all over including new CPU IDs for
  the Intel RAPL driver, an Energy Model rework to use micro-Watt as the
  power unit, cpufreq fixes and cleanus, cpuidle updates, devfreq
  updates, documentation cleanups and a new version of the pm-graph
  suite of utilities.

  Specifics:

   - Make cpufreq_show_cpus() more straightforward (Viresh Kumar).

   - Drop unnecessary CPU hotplug locking from store() used by cpufreq
     sysfs attributes (Viresh Kumar).

   - Make the ACPI cpufreq driver support the boost control interface on
     Zhaoxin/Centaur processors (Tony W Wang-oc).

   - Print a warning message on attempts to free an active cpufreq
     policy which should never happen (Viresh Kumar).

   - Fix grammar in the Kconfig help text for the loongson2 cpufreq
     driver (Randy Dunlap).

   - Use cpumask_var_t for an on-stack CPU mask in the ondemand cpufreq
     governor (Zhao Liu).

   - Add trace points for guest_halt_poll_ns grow/shrink to the haltpoll
     cpuidle driver (Eiichi Tsukata).

   - Modify intel_idle to treat C1 and C1E as independent idle states on
     Sapphire Rapids (Artem Bityutskiy).

   - Extend support for wakeirq to callback wrappers used during system
     suspend and resume (Ulf Hansson).

   - Defer waiting for device probe before loading a hibernation image
     till the first actual device access to avoid possible deadlocks
     reported by syzbot (Tetsuo Handa).

   - Unify device_init_wakeup() for PM_SLEEP and !PM_SLEEP (Bjorn
     Helgaas).

   - Add Raptor Lake-P to the list of processors supported by the Intel
     RAPL driver (George D Sworo).

   - Add Alder Lake-N and Raptor Lake-P to the list of processors for
     which Power Limit4 is supported in the Intel RAPL driver (Sumeet
     Pawnikar).

   - Make pm_genpd_remove() check genpd_debugfs_dir against NULL before
     attempting to remove it (Hsin-Yi Wang).

   - Change the Energy Model code to represent power in micro-Watts and
     adjust its users accordingly (Lukasz Luba).

   - Add new devfreq driver for Mediatek CCI (Cache Coherent
     Interconnect) (Johnson Wang).

   - Convert the Samsung Exynos SoC Bus bindings to DT schema of
     exynos-bus.c (Krzysztof Kozlowski).

   - Address kernel-doc warnings by adding the description for unused
     function parameters in devfreq core (Mauro Carvalho Chehab).

   - Use NULL to pass a null pointer rather than zero according to the
     function propotype in imx-bus.c (Colin Ian King).

   - Print error message instead of error interger value in
     tegra30-devfreq.c (Dmitry Osipenko).

   - Add checks to prevent setting negative frequency QoS limits for
     CPUs (Shivnandan Kumar).

   - Update the pm-graph suite of utilities to the latest revision 5.9
     including multiple improvements (Todd Brandt).

   - Drop pme_interrupt reference from the PCI power management
     documentation (Mario Limonciello)"

* tag 'pm-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (27 commits)
  powercap: RAPL: Add Power Limit4 support for Alder Lake-N and Raptor Lake-P
  PM: QoS: Add check to make sure CPU freq is non-negative
  PM: hibernate: defer device probing when resuming from hibernation
  intel_idle: make SPR C1 and C1E be independent
  cpufreq: ondemand: Use cpumask_var_t for on-stack cpu mask
  cpufreq: loongson2: fix Kconfig "its" grammar
  pm-graph v5.9
  cpufreq: Warn users while freeing active policy
  cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1
  firmware: arm_scmi: Get detailed power scale from perf
  Documentation: EM: Switch to micro-Watts scale
  PM: EM: convert power field to micro-Watts precision and align drivers
  PM / devfreq: tegra30: Add error message for devm_devfreq_add_device()
  PM / devfreq: imx-bus: use NULL to pass a null pointer rather than zero
  PM / devfreq: shut up kernel-doc warnings
  dt-bindings: interconnect: samsung,exynos-bus: convert to dtschema
  PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver
  dt-bindings: interconnect: Add MediaTek CCI dt-bindings
  PM: domains: Ensure genpd_debugfs_dir exists before remove
  PM: runtime: Extend support for wakeirq for force_suspend|resume
  ...
 2022-08-02 11:17:00 -07:00
David Howells
2757a4dc18 afs: Fix access after dec in put functions 
Reference-putting functions should not access the object being put after
decrementing the refcount unless they reduce the refcount to zero.

Fix a couple of instances of this in afs by copying the information to be
logged by tracepoint to local variables before doing the decrement.

[Fixed a bit in afs_put_server() that I'd missed but Marc caught]

Fixes: 341f741f04 ("afs: Refcount the afs_call struct")
Fixes: 4521819369 ("afs: Trace afs_server usage")
Fixes: 977e5f8ed0 ("afs: Split the usage count on struct afs_server")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/165911278430.3745403.16526310736054780645.stgit@warthog.procyon.org.uk/ # v1
 2022-08-02 18:21:29 +01:00
David Howells
c56f9ec8b2 afs: Use refcount_t rather than atomic_t 
Use refcount_t rather than atomic_t in afs to make use of the count
checking facilities provided.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/165911277768.3745403.423349776836296452.stgit@warthog.procyon.org.uk/ # v1
 2022-08-02 18:10:11 +01:00
Linus Torvalds
47b62edcd4 ARM: SoC drivers for 6.0 
The SoC driver updates contain changes to improve support for
 additional SoC variants, as well as cleanups an minor bugfixes
 in a number of existing drivers.
 
 Notable updates this time include:
 
  - Support for Qualcomm MSM8909 (Snapdragon 210) in various drivers
 
  - Updates for interconnect drivers on Qualcomm Snapdragon
 
  - A new driver support for NMI interrupts on Fujitsu A64fx
 
  - A rework of Broadcom BCMBCA Kconfig dependencies
 
  - Improved support for BCM2711 (Raspberry Pi 4) power management
    to allow the use of the V3D GPU
 
  - Cleanups to the NXP guts driver
 
  - Arm SCMI firmware driver updates to add tracing support, and
    use the firmware interfaces for system power control and for
    power capping.
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Merge tag 'arm-drivers-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC drivers from Arnd Bergmann:
 "The SoC driver updates contain changes to improve support for
  additional SoC variants, as well as cleanups an minor bugfixes
  in a number of existing drivers.

  Notable updates this time include:

   - Support for Qualcomm MSM8909 (Snapdragon 210) in various drivers

   - Updates for interconnect drivers on Qualcomm Snapdragon

   - A new driver support for NMI interrupts on Fujitsu A64fx

   - A rework of Broadcom BCMBCA Kconfig dependencies

   - Improved support for BCM2711 (Raspberry Pi 4) power management to
     allow the use of the V3D GPU

   - Cleanups to the NXP guts driver

   - Arm SCMI firmware driver updates to add tracing support, and use
     the firmware interfaces for system power control and for power
     capping"

* tag 'arm-drivers-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (125 commits)
  soc: a64fx-diag: disable modular build
  dt-bindings: soc: qcom: qcom,smd-rpm: add power-controller
  dt-bindings: soc: qcom: aoss: document qcom,sm8450-aoss-qmp
  dt-bindings: soc: qcom,rpmh-rsc: simplify qcom,tcs-config
  ARM: mach-qcom: Add support for MSM8909
  dt-bindings: arm: cpus: Document "qcom,msm8909-smp" enable-method
  soc: qcom: spm: Add CPU data for MSM8909
  dt-bindings: soc: qcom: spm: Add MSM8909 CPU compatible
  soc: qcom: rpmpd: Add compatible for MSM8909
  dt-bindings: power: qcom-rpmpd: Add MSM8909 power domains
  soc: qcom: smd-rpm: Add compatible for MSM8909
  dt-bindings: soc: qcom: smd-rpm: Add MSM8909
  soc: qcom: icc-bwmon: Remove unnecessary print function dev_err()
  soc: fujitsu: Add A64FX diagnostic interrupt driver
  soc: qcom: socinfo: Fix the id of SA8540P SoC
  soc: qcom: Make QCOM_RPMPD depend on PM
  tty: serial: bcm63xx: bcmbca: Replace ARCH_BCM_63XX with ARCH_BCMBCA
  spi: bcm63xx-hsspi: bcmbca: Replace ARCH_BCM_63XX with ARCH_BCMBCA
  clk: bcm: bcmbca: Replace ARCH_BCM_63XX with ARCH_BCMBCA
  hwrng: bcm2835: bcmbca: Replace ARCH_BCM_63XX with ARCH_BCMBCA
  ...
 2022-08-02 08:10:10 -07:00
Linus Torvalds
0dd1cabe8a slab updates for 5.20/6.0 
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Merge tag 'slab-for-5.20_or_6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab updates from Vlastimil Babka:

 - An addition of 'accounted' flag to slab allocation tracepoints to
   indicate memcg_kmem accounting, by Vasily

 - An optimization of memcg handling in freeing paths, by Muchun

 - Various smaller fixes and cleanups

* tag 'slab-for-5.20_or_6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slab_common: move generic bulk alloc/free functions to SLOB
  mm/sl[au]b: use own bulk free function when bulk alloc failed
  mm: slab: optimize memcg_slab_free_hook()
  mm/tracing: add 'accounted' entry into output of allocation tracepoints
  tools/vm/slabinfo: Handle files in debugfs
  mm/slub: Simplify __kmem_cache_alias()
  mm, slab: fix bad alignments
 2022-08-01 11:46:58 -07:00
Linus Torvalds
eb43bbac4c dlm for 6.0 
Changes in this set of commits:
 
 . Delay the cleanup of interrupted posix lock requests until the
   user space result arrives. Previously, the immediate cleanup
   would lead to extraneous warnings when the result arrived.
 
 . Tracepoint improvements, e.g. adding the lock resource name.
 
 . Delay the completion of lockspace creation until one full recovery
   cycle has completed. This allows more error cases to be returned to
   the caller.
 
 . Remove warnings from the locking layer about delayed network replies.
   The recently added midcomms warnings are much more useful.
 
 . Begin the process of deprecating two unused lock-timeout-related
   features. These features now require enabling via a Kconfig option,
   and enabling them triggers deprecation warnings. We expect to
   remove the code in v6.2.
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Merge tag 'dlm-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:

 - Delay the cleanup of interrupted posix lock requests until the user
   space result arrives. Previously, the immediate cleanup would lead to
   extraneous warnings when the result arrived.

 - Tracepoint improvements, e.g. adding the lock resource name.

 - Delay the completion of lockspace creation until one full recovery
   cycle has completed. This allows more error cases to be returned to
   the caller.

 - Remove warnings from the locking layer about delayed network replies.
   The recently added midcomms warnings are much more useful.

 - Begin the process of deprecating two unused lock-timeout-related
   features. These features now require enabling via a Kconfig option,
   and enabling them triggers deprecation warnings. We expect to remove
   the code in v6.2.

* tag 'dlm-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  fs: dlm: move kref_put assert for lkb structs
  fs: dlm: don't use deprecated timeout features by default
  fs: dlm: add deprecation Kconfig and warnings for timeouts
  fs: dlm: remove timeout from dlm_user_adopt_orphan
  fs: dlm: remove waiter warnings
  fs: dlm: fix grammar in lowcomms output
  fs: dlm: add comment about lkb IFL flags
  fs: dlm: handle recovery result outside of ls_recover
  fs: dlm: make new_lockspace() wait until recovery completes
  fs: dlm: call dlm_lsop_recover_prep once
  fs: dlm: update comments about recovery and membership handling
  fs: dlm: add resource name to tracepoints
  fs: dlm: remove additional dereference of lksb
  fs: dlm: change ast and bast trace order
  fs: dlm: change posix lock sigint handling
  fs: dlm: use dlm_plock_info for do_unlock_close
  fs: dlm: change plock interrupted message to debug again
  fs: dlm: add pid to debug log
  fs: dlm: plock use list_first_entry
 2022-08-01 08:46:53 -07:00
Steven Rostedt (Google)
4c3d2f9388 tracing: Use a struct alignof to determine trace event field alignment 
alignof() gives an alignment of types as they would be as standalone
variables. But alignment in structures might be different, and when
building the fields of events, the alignment must be the actual
alignment otherwise the field offsets may not match what they actually
are.

This caused trace-cmd to crash, as libtraceevent did not check if the
field offset was bigger than the event. The write_msr and read_msr
events on 32 bit had their fields incorrect, because it had a u64 field
between two ints. alignof(u64) would give 8, but the u64 field was at a
4 byte alignment.

Define a macro as:

   ALIGN_STRUCTFIELD(type) ((int)(offsetof(struct {char a; type b;}, b)))

which gives the actual alignment of types in a structure.

Link: https://lkml.kernel.org/r/20220731015928.7ab3a154@rorschach.local.home

Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Fixes: 04ae87a520 ("ftrace: Rework event_create_dir()")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-31 14:55:01 -04:00
Daniel Bristot de Oliveira
ccc319dcb4 rv/monitor: Add the wwnr monitor 
Per task wakeup while not running (wwnr) monitor.

This model is broken, the reason is that a task can be running in the
processor without being set as RUNNABLE. Think about a task about to
sleep:

1:      set_current_state(TASK_UNINTERRUPTIBLE);
2:      schedule();

And then imagine an IRQ happening in between the lines one and two,
waking the task up. BOOM, the wakeup will happen while the task is
running.

Q: Why do we need this model, so?
A: To test the reactors.

Link: https://lkml.kernel.org/r/473c0fc39967250fdebcff8b620311c11dccad30.1659052063.git.bristot@kernel.org

Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Gabriele Paoloni <gpaoloni@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-30 14:01:30 -04:00
Daniel Bristot de Oliveira
10bde81c74 rv/monitor: Add the wip monitor 
The wakeup in preemptive (wip) monitor verifies if the
wakeup events always take place with preemption disabled:

                     |
                     |
                     v
                   #==================#
                   H    preemptive    H <+
                   #==================#  |
                     |                   |
                     | preempt_disable   | preempt_enable
                     v                   |
    sched_waking   +------------------+  |
  +--------------- |                  |  |
  |                |  non_preemptive  |  |
  +--------------> |                  | -+
                   +------------------+

The wakeup event always takes place with preemption disabled because
of the scheduler synchronization. However, because the preempt_count
and its trace event are not atomic with regard to interrupts, some
inconsistencies might happen.

The documentation illustrates one of these cases.

Link: https://lkml.kernel.org/r/c98ca678df81115fddc04921b3c79720c836b18f.1659052063.git.bristot@kernel.org

Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Gabriele Paoloni <gpaoloni@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-30 14:01:30 -04:00
Daniel Bristot de Oliveira
792575348f rv/include: Add deterministic automata monitor definition via C macros 
In Linux terms, the runtime verification monitors are encapsulated
inside the "RV monitor" abstraction. The "RV monitor" includes a set
of instances of the monitor (per-cpu monitor, per-task monitor, and
so on), the helper functions that glue the monitor to the system
reference model, and the trace output as a reaction for event parsing
and exceptions, as depicted below:

Linux  +----- RV Monitor ----------------------------------+ Formal
 Realm |                                                   |  Realm
 +-------------------+     +----------------+     +-----------------+
 |   Linux kernel    |     |     Monitor    |     |     Reference   |
 |     Tracing       |  -> |   Instance(s)  | <-  |       Model     |
 | (instrumentation) |     | (verification) |     | (specification) |
 +-------------------+     +----------------+     +-----------------+
        |                          |                       |
        |                          V                       |
        |                     +----------+                 |
        |                     | Reaction |                 |
        |                     +--+--+--+-+                 |
        |                        |  |  |                   |
        |                        |  |  +-> trace output ?  |
        +------------------------|--|----------------------+
                                 |  +----> panic ?
                                 +-------> <user-specified>

Add the rv/da_monitor.h, enabling automatic code generation for the
*Monitor Instance(s)* using C macros, and code to support it.

The benefits of the usage of macro for monitor synthesis are 3-fold as it:

- Reduces the code duplication;
- Facilitates the bug fix/improvement;
- Avoids the case of developers changing the core of the monitor code
  to manipulate the model in a (let's say) non-standard way.

This initial implementation presents three different types of monitor
instances:

- DECLARE_DA_MON_GLOBAL(name, type)
- DECLARE_DA_MON_PER_CPU(name, type)
- DECLARE_DA_MON_PER_TASK(name, type)

The first declares the functions for a global deterministic automata monitor,
the second for monitors with per-cpu instances, and the third with per-task
instances.

Link: https://lkml.kernel.org/r/51b0bf425a281e226dfeba7401d2115d6091f84e.1659052063.git.bristot@kernel.org

Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Gabriele Paoloni <gpaoloni@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-30 14:01:28 -04:00
Steven Rostedt (Google)
3a2dcbaf4d tracing: Use a copy of the va_list for __assign_vstr() 
If an instance of tracing enables the same trace event as another
instance, or the top level instance, or even perf, then the va_list passed
into some tracepoints can be used more than once.

As va_list can only be traversed once, this can cause issues:

 # cat /sys/kernel/tracing/instances/qla2xxx/trace
             cat-56106   [012] ..... 2419873.470098: ql_dbg_log: qla2xxx [0000:05:00.0]-1054:14:  Entered (null).
             cat-56106   [012] ..... 2419873.470101: ql_dbg_log: qla2xxx [0000:05:00.0]-1000:14:  Entered ×+<96>²Ü<98>^H.
             cat-56106   [012] ..... 2419873.470102: ql_dbg_log: qla2xxx [0000:05:00.0]-1006:14:  Prepare to issue mbox cmd=0xde589000.

 # cat /sys/kernel/tracing/trace
             cat-56106   [012] ..... 2419873.470097: ql_dbg_log: qla2xxx [0000:05:00.0]-1054:14:  Entered qla2x00_get_firmware_state.
             cat-56106   [012] ..... 2419873.470100: ql_dbg_log: qla2xxx [0000:05:00.0]-1000:14:  Entered qla2x00_mailbox_command.
             cat-56106   [012] ..... 2419873.470102: ql_dbg_log: qla2xxx [0000:05:00.0]-1006:14:  Prepare to issue mbox cmd=0x69.

The instance version is corrupted because the top level instance iterated
the va_list first.

Use va_copy() in the __assign_vstr() macro to make sure that each trace
event for each use case gets a fresh va_list.

Link: https://lore.kernel.org/all/259d53a5-958e-6508-4e45-74dba2821242@marvell.com/
Link: https://lkml.kernel.org/r/20220719182004.21daa83e@gandalf.local.home

Fixes: 0563231f93 ("tracing/events: Add __vstring() and __assign_vstr() helper macros")
Reported-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-30 13:56:09 -04:00
Chuck Lever
28fffa6c57 SUNRPC: Expand the svc_alloc_arg_err tracepoint 
Record not only the number of pages requested, but the number of
pages that were actually allocated, to get a measure of progress
(or lack thereof).

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
 2022-07-29 20:08:56 -04:00
Rafael J. Wysocki
da9d01794e - Make per cpufreq / devfreq cooling device ops instead of using a 
global variable, fix comments and rework the trace information
   (Lukasz Luba)
 
 - Add the include/dt-bindings/thermal.h under the area covered by the
   thermal maintainer in the MAINTAINERS file (Lukas Bulwahn)
 
 - Improve the error output by giving the sensor identification when a
   thermal zone failed to initialize, the DT bindings by changing the
   positive logic and adding the r8a779f0 support on the rcar3 (Wolfram
   Sang)
 
 - Convert the QCom tsens DT binding to the dtsformat format (Krzysztof
   Kozlowski)
 
 - Remove the pointless get_trend() function in the QCom, Ux500 and
   tegra thermal drivers, along with the unused DROP_FULL and
   RAISE_FULL trends definitions. Simplify the code by using clamp()
   macros (Daniel Lezcano)
 
 - Fix ref_table memory leak at probe time on the k3_j72xx bandgap
   (Bryan Brattlof)
 
 - Fix array underflow in prep_lookup_table (Dan Carpenter)
 
 - Add static annotation to the k3_j72xx_bandgap_j7* data structure
   (Jin Xiaoyun)
 
 - Fix typos in comments detected on sun8i by Coccinelle (Julia Lawall)
 
 - Fix typos in comments on rzg2l (Biju Das)
 
 - Remove as unnecessary call to dev_err() as the error is already
   printed by the failing function on u8500 (Yang Li)
 
 - Register the thermal zones as hwmon sensors for the Qcom thermal
   sensors (Dmitry Baryshkov)
 
 - Fix 'tmon' tool compilation issue by adding phtread.h include
   (Markus Mayer)
 
 - Fix typo in the comments for the 'tmon' tool (Slark Xiao)
 
 - Consolidate the thermal core code by beginning to move the thermal
   trip structure from the thermal OF code as a generic structure to be
   used by the different sensors when registering a thermal zone
   (Daniel Lezcano)
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Merge tag 'thermal-v5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux

Pull thermal control changes for 5.20-rc1 from Daniel Lezcano:

"- Make per cpufreq / devfreq cooling device ops instead of using a
   global variable, fix comments and rework the trace information
   (Lukasz Luba)

 - Add the include/dt-bindings/thermal.h under the area covered by the
   thermal maintainer in the MAINTAINERS file (Lukas Bulwahn)

 - Improve the error output by giving the sensor identification when a
   thermal zone failed to initialize, the DT bindings by changing the
   positive logic and adding the r8a779f0 support on the rcar3 (Wolfram
   Sang)

 - Convert the QCom tsens DT binding to the dtsformat format (Krzysztof
   Kozlowski)

 - Remove the pointless get_trend() function in the QCom, Ux500 and
   tegra thermal drivers, along with the unused DROP_FULL and
   RAISE_FULL trends definitions. Simplify the code by using clamp()
   macros (Daniel Lezcano)

 - Fix ref_table memory leak at probe time on the k3_j72xx bandgap
   (Bryan Brattlof)

 - Fix array underflow in prep_lookup_table (Dan Carpenter)

 - Add static annotation to the k3_j72xx_bandgap_j7* data structure
   (Jin Xiaoyun)

 - Fix typos in comments detected on sun8i by Coccinelle (Julia Lawall)

 - Fix typos in comments on rzg2l (Biju Das)

 - Remove as unnecessary call to dev_err() as the error is already
   printed by the failing function on u8500 (Yang Li)

 - Register the thermal zones as hwmon sensors for the Qcom thermal
   sensors (Dmitry Baryshkov)

 - Fix 'tmon' tool compilation issue by adding phtread.h include
   (Markus Mayer)

 - Fix typo in the comments for the 'tmon' tool (Slark Xiao)

 - Consolidate the thermal core code by beginning to move the thermal
   trip structure from the thermal OF code as a generic structure to be
   used by the different sensors when registering a thermal zone
   (Daniel Lezcano)"

* tag 'thermal-v5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (36 commits)
  thermal/of: Initialize trip points separately
  thermal/of: Use thermal trips stored in the thermal zone
  thermal/core: Add thermal_trip in thermal_zone
  thermal/core: Rename 'trips' to 'num_trips'
  thermal/core: Move thermal_set_delay_jiffies to static
  thermal/core: Remove unneeded EXPORT_SYMBOLS
  thermal/of: Move thermal_trip structure to thermal.h
  thermal/of: Remove the device node pointer for thermal_trip
  thermal/of: Replace device node match with device node search
  thermal/core: Remove duplicate information when an error occurs
  thermal/core: Avoid calling ->get_trip_temp() unnecessarily
  thermal/tools/tmon: Fix typo 'the the' in comment
  thermal/tools/tmon: Include pthread and time headers in tmon.h
  thermal/ti-soc-thermal: Fix comment typo
  thermal/drivers/qcom/spmi-adc-tm5: Register thermal zones as hwmon sensors
  thermal/drivers/qcom/temp-alarm: Register thermal zones as hwmon sensors
  thermal/drivers/u8500: Remove unnecessary print function dev_err()
  thermal/drivers/rzg2l: Fix comments
  thermal/drivers/sun8i: Fix typo in comment
  thermal/drivers/k3_j72xx_bandgap: Make k3_j72xx_bandgap_j721e_data and k3_j72xx_bandgap_j7200_data static
  ...
 2022-07-29 19:10:56 +02:00
Rafael J. Wysocki
f611b33af2 Merge back cpuidle material for 5.20. 2022-07-29 17:15:30 +02:00
Joerg Roedel
c10100a416 Merge branches 'arm/exynos', 'arm/mediatek', 'arm/msm', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd' and 'core' into next 2022-07-29 12:06:56 +02:00
Lukasz Luba
3f7ced7ac9 drivers/thermal/cpufreq_cooling : Refactor thermal_power_cpu_get_power tracing 
Simplify the thermal_power_cpu_get_power trace event by removing
complicated cpumask and variable length array. Now the tools parsing trace
output don't have to hassle to get this power data. The simplified format
version uses 'policy->cpu'. Remove also the 'load' information completely
since there is very little value of it in this trace event. To get the
CPUs' load (or utilization) there are other dedicated trace hooks in the
kernel. This patch also simplifies and speeds-up the main cooling code
when that trace event is enabled.

Rename the trace event to avoid confusion of tools which parse the trace
file.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20220613124327.30766-3-lukasz.luba@arm.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
 2022-07-28 17:29:42 +02:00
Johannes Thumshirn
5bea250881 btrfs: add tracepoints for ordered extents 
When debugging a reference counting issue with ordered extents, I've found
we're lacking a lot of tracepoint coverage in the ordered extent code.

Close these gaps by adding tracepoints after every refcount_inc() in the
ordered extent code.

Reviewed-by: Boris Burkov <boris@bur.io>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2022-07-25 17:45:34 +02:00
Qu Wenruo
b8bea09a45 btrfs: add trace event for submitted RAID56 bio 
Add tracepoint for better insight to how the RAID56 data are submitted.

The output looks like this: (trace event header and UUID skipped)

   raid56_read_partial: full_stripe=389152768 devid=3 type=DATA1 offset=32768 opf=0x0 physical=323059712 len=32768
   raid56_read_partial: full_stripe=389152768 devid=1 type=DATA2 offset=0 opf=0x0 physical=67174400 len=65536
   raid56_write_stripe: full_stripe=389152768 devid=3 type=DATA1 offset=0 opf=0x1 physical=323026944 len=32768
   raid56_write_stripe: full_stripe=389152768 devid=2 type=PQ1 offset=0 opf=0x1 physical=323026944 len=32768

The above debug output is from a 32K data write into an empty RAID56
data chunk.

Some explanation on the event output:

  full_stripe:	the logical bytenr of the full stripe
  devid:	btrfs devid
  type:		raid stripe type.
         	DATA1:	the first data stripe
         	DATA2:	the second data stripe
         	PQ1:	the P stripe
         	PQ2:	the Q stripe
  offset:	the offset inside the stripe.
  opf:		the bio op type
  physical:	the physical offset the bio is for
  len:		the length of the bio

The first two lines are from partial RMW read, which is reading the
remaining data stripes from disks.

The last two lines are for full stripe RMW write, which is writing the
involved two 16K stripes (one for DATA1 stripe, one for P stripe).
The stripe for DATA2 doesn't need to be written.

There are 5 types of trace events:

- raid56_read_partial
  Read remaining data for regular read/write path.

- raid56_write_stripe
  Write the modified stripes for regular read/write path.

- raid56_scrub_read_recover
  Read remaining data for scrub recovery path.

- raid56_scrub_write_stripe
  Write the modified stripes for scrub path.

- raid56_scrub_read
  Read remaining data for scrub path.

Also, since the trace events are included at super.c, we have to export
needed structure definitions to 'raid56.h' and include the header in
super.c, or we're unable to access those members.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ reformat comments ]
Signed-off-by: David Sterba <dsterba@suse.com>
 2022-07-25 17:44:34 +02:00
Stefan Roesch
1c849b481b io_uring: Add tracepoint for short writes 
This adds the io_uring_short_write tracepoint to io_uring. A short write
is issued if not all pages that are required for a write are in the page
cache and the async buffered writes have to return EAGAIN.

Signed-off-by: Stefan Roesch <shr@fb.com>
Link: https://lore.kernel.org/r/20220616212221.2024518-13-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:32 -06:00
Dylan Yudaken
9b26e811e9 io_uring: fix io_uring_cqe_overflow trace format 
Make the trace format consistent with io_uring_complete for cflags

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-12-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:17 -06:00
Dylan Yudaken
eccd880185 io_uring: add trace event for running task work 
This is useful for investigating if task_work is batching

Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220622134028.2013417-8-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:15 -06:00
Pavel Begunkov
48863ffd3e io_uring: clean up tracing events 
We have lots of trace events accepting an io_uring request and wanting
to print some of its fields like user_data, opcode, flags and so on.
However, as trace points were unaware of io_uring structures, we had to
pass all the fields as arguments. Teach trace/events/io_uring.h about
struct io_kiocb and stop the misery of passing a horde of arguments to
trace helpers.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/40ff72f92798114e56d400f2b003beb6cde6ef53.1655384063.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2022-07-24 18:39:14 -06:00
David Collins
2af28b241e spmi: trace: fix stack-out-of-bound access in SPMI tracing functions 
trace_spmi_write_begin() and trace_spmi_read_end() both call
memcpy() with a length of "len + 1".  This leads to one extra
byte being read beyond the end of the specified buffer.  Fix
this out-of-bound memory access by using a length of "len"
instead.

Here is a KASAN log showing the issue:

BUG: KASAN: stack-out-of-bounds in trace_event_raw_event_spmi_read_end+0x1d0/0x234
Read of size 2 at addr ffffffc0265b7540 by task thermal@2.0-ser/1314
...
Call trace:
 dump_backtrace+0x0/0x3e8
 show_stack+0x2c/0x3c
 dump_stack_lvl+0xdc/0x11c
 print_address_description+0x74/0x384
 kasan_report+0x188/0x268
 kasan_check_range+0x270/0x2b0
 memcpy+0x90/0xe8
 trace_event_raw_event_spmi_read_end+0x1d0/0x234
 spmi_read_cmd+0x294/0x3ac
 spmi_ext_register_readl+0x84/0x9c
 regmap_spmi_ext_read+0x144/0x1b0 [regmap_spmi]
 _regmap_raw_read+0x40c/0x754
 regmap_raw_read+0x3a0/0x514
 regmap_bulk_read+0x418/0x494
 adc5_gen3_poll_wait_hs+0xe8/0x1e0 [qcom_spmi_adc5_gen3]
 ...
 __arm64_sys_read+0x4c/0x60
 invoke_syscall+0x80/0x218
 el0_svc_common+0xec/0x1c8
 ...

addr ffffffc0265b7540 is located in stack of task thermal@2.0-ser/1314 at offset 32 in frame:
 adc5_gen3_poll_wait_hs+0x0/0x1e0 [qcom_spmi_adc5_gen3]

this frame has 1 object:
 [32, 33) 'status'

Memory state around the buggy address:
 ffffffc0265b7400: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffffffc0265b7480: 04 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffc0265b7500: 00 00 00 00 f1 f1 f1 f1 01 f3 f3 f3 00 00 00 00
                                           ^
 ffffffc0265b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffc0265b7600: f1 f1 f1 f1 01 f2 07 f2 f2 f2 01 f3 00 00 00 00
==================================================================

Fixes: a9fce37481 ("spmi: add command tracepoints for SPMI")
Cc: stable@vger.kernel.org
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: David Collins <quic_collinsd@quicinc.com>
Link: https://lore.kernel.org/r/20220627235512.2272783-1-quic_collinsd@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2022-07-24 16:16:44 +02:00
Chuck Lever
f67939e4b0 SUNRPC: Replace dprintk() call site in xs_data_ready 
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2022-07-23 15:34:38 -04:00
Steven Rostedt (Google)
74003fc4ae scsi: qla2xxx: tracing: Use the new __vstring() helper 
Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.

Link: https://lkml.kernel.org/r/20220705224750.896553364@goodmis.org

Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 2022-07-19 11:20:25 -04:00