tree a13e19f216389f16f1cb6641d54751f167482515
parent 02f9a04d76b76b80b05ddc33ceabe806b84fda3c
parent ab0809af0bee88b689ba289ec8c40aa2be3a17ec
author Linus Torvalds <torvalds@linux-foundation.org> 1648413752 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1648413752 -0700
mergetag object ab0809af0bee88b689ba289ec8c40aa2be3a17ec
 type commit
 tag perf-tools-for-v5.18-2022-03-26
 tagger Arnaldo Carvalho de Melo <acme@redhat.com> 1648308079 -0300
 
 perf tools changes for v5.18: 1st batch
 
 New features:
 
 perf ftrace:
 
 - Add -n/--use-nsec option to the 'latency' subcommand.
 
   Default: usecs:
 
   $ sudo perf ftrace latency -T dput -a sleep 1
   #   DURATION     |      COUNT | GRAPH                          |
        0 - 1    us |    2098375 | #############################  |
        1 - 2    us |         61 |                                |
        2 - 4    us |         33 |                                |
        4 - 8    us |         13 |                                |
        8 - 16   us |        124 |                                |
       16 - 32   us |        123 |                                |
       32 - 64   us |          1 |                                |
       64 - 128  us |          0 |                                |
      128 - 256  us |          1 |                                |
      256 - 512  us |          0 |                                |
 
   Better granularity with nsec:
 
   $ sudo perf ftrace latency -T dput -a -n sleep 1
   #   DURATION     |      COUNT | GRAPH                          |
        0 - 1    us |          0 |                                |
        1 - 2    ns |          0 |                                |
        2 - 4    ns |          0 |                                |
        4 - 8    ns |          0 |                                |
        8 - 16   ns |          0 |                                |
       16 - 32   ns |          0 |                                |
       32 - 64   ns |          0 |                                |
       64 - 128  ns |    1163434 | ##############                 |
      128 - 256  ns |     914102 | #############                  |
      256 - 512  ns |        884 |                                |
      512 - 1024 ns |        613 |                                |
        1 - 2    us |         31 |                                |
        2 - 4    us |         17 |                                |
        4 - 8    us |          7 |                                |
        8 - 16   us |        123 |                                |
       16 - 32   us |         83 |                                |
 
 perf lock:
 
 - Add -c/--combine-locks option to merge lock instances in the same class into
   a single entry.
 
   # perf lock report -c
                  Name acquired contended avg wait(ns) total wait(ns) max wait(ns) min wait(ns)
 
         rcu_read_lock   251225         0            0              0            0            0
    hrtimer_bases.lock    39450         0            0              0            0            0
   &sb->s_type->i_l...    10301         1          662            662          662          662
      ptlock_ptr(page)    10173         2          701           1402          760          642
   &(ei->i_block_re...     8732         0            0              0            0            0
          &xa->xa_lock     8088         0            0              0            0            0
           &base->lock     6705         0            0              0            0            0
           &p->pi_lock     5549         0            0              0            0            0
   &dentry->d_lockr...     5010         4         1274           5097         1844          789
             &ep->lock     3958         0            0              0            0            0
 
 - Add -F/--field option to customize the list of fields to output:
 
   $ perf lock report -F contended,wait_max -k avg_wait
                   Name contended max wait(ns) avg wait(ns)
 
         slock-AF_INET6         1        23543        23543
      &lruvec->lru_lock         5        18317        11254
         slock-AF_INET6         1        10379        10379
             rcu_node_1         1         2104         2104
    &dentry->d_lockr...         1         1844         1844
    &dentry->d_lockr...         1         1672         1672
       &newf->file_lock        15         2279         1025
    &dentry->d_lockr...         1          792          792
 
 - Add --synth=no option for record, as there is no need to symbolize,
   lock names comes from the tracepoints.
 
 perf record:
 
 - Threaded recording, opt-in, via the new --threads command line option.
 
 - Improve AMD IBS (Instruction-Based Sampling) error handling messages.
 
 perf script:
 
 - Add 'brstackinsnlen' field (use it with -F) for branch stacks.
 
 - Output branch sample type in 'perf script'.
 
 perf report:
 
 - Add "addr_from" and "addr_to" sort dimensions.
 
 - Print branch stack entry type in 'perf report --dump-raw-trace'
 
 - Fix symbolization for chrooted workloads.
 
 Hardware tracing:
 
 Intel PT:
 
 - Add CFE (Control Flow Event) and EVD (Event Data) packets support.
 
 - Add MODE.Exec IFLAG bit support.
 
 Explanation about these features from the "Intel® 64 and IA-32 architectures
 software developer’s manual combined volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C,
 3D, and 4" PDF at:
 
   https://cdrdv2.intel.com/v1/dl/getContent/671200
 
 At page 3951:
 
 <quote>
 32.2.4
 
 Event Trace is a capability that exposes details about the asynchronous
 events, when they are generated, and when their corresponding software
 event handler completes execution. These include:
 
 o Interrupts, including NMI and SMI, including the interrupt vector when
 defined.
 
 o Faults, exceptions including the fault vector.
 
 — Page faults additionally include the page fault address, when in context.
 
 o Event handler returns, including IRET and RSM.
 
 o VM exits and VM entries.¹
 
 — VM exits include the values written to the “exit reason” and “exit qualification” VMCS fields.
 INIT and SIPI events.
 
 o TSX aborts, including the abort status returned for the RTM instructions.
 
 o Shutdown.
 
 Additionally, it provides indication of the status of the Interrupt Flag
 (IF), to indicate when interrupts are masked.
 </quote>
 
 ARM CoreSight:
 
 - Use advertised caps/min_interval as default sample_period on ARM spe.
 
 - Update deduction of TRCCONFIGR register for branch broadcast on ARM's CoreSight ETM.
 
 Vendor Events (JSON):
 
 Intel:
 
 - Update events and metrics for:
 
     Alderlake, Broadwell, Broadwell DE, BroadwellX, CascadelakeX, Elkhartlake,
     Bonnell, Goldmont, GoldmontPlus, Westmere EP-DP, Haswell, HaswellX,
     Icelake, IcelakeX, Ivybridge, Ivytown, Jaketown, Knights Landing,
     Nehalem EP, Sandybridge, Silvermont, Skylake, Skylake Server, SkylakeX,
     Tigerlake, TremontX, Westmere EP-SP, Westmere EX.
 
 ARM:
 
 - Add support for HiSilicon CPA PMU aliasing.
 
 perf stat:
 
 - Fix forked applications enablement of counters.
 
 - The 'slots' should only be printed on a different order than the one specified
   on the command line when 'topdown' events are present, fix it.
 
 Miscellaneous:
 
 - Sync msr-index, cpufeatures header files with the kernel sources.
 
 - Stop using some deprecated libbpf APIs in 'perf trace'.
 
 - Fix some spelling mistakes.
 
 - Refactor the maps pointers usage to pave the way for using refcount debugging.
 
 - Only offer the --tui option on perf top, report and annotate when perf was
   built with libslang.
 
 - Don't mention --to-ctf in 'perf data --help' when not linking with the required
   library, libbabeltrace.
 
 - Use ARRAY_SIZE() instead of ad hoc equivalent, spotted by array_size.cocci.
 
 - Enhance the matching of sub-commands abbreviations:
 	'perf c2c rec' -> 'perf c2c record'
 	'perf c2c recport -> error
 
 - Set build-id using build-id header on new mmap records.
 
 - Fix generation of 'perf --version' string.
 
 perf test:
 
 - Add test for the arm_spe event.
 
 - Add test to check unwinding using fame-pointer (fp) mode on arm64.
 
 - Make metric testing more robust in 'perf test'.
 
 - Add error message for unsupported branch stack cases.
 
 libperf:
 
 - Add API for allocating new thread map array.
 
 - Fix typo in perf_evlist__open() failure error messages in libperf tests.
 
 perf c2c:
 
 - Replace bitmap_weight() with bitmap_empty() where appropriate.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.18-2022-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "New features:

  perf ftrace:

   - Add -n/--use-nsec option to the 'latency' subcommand.

     Default: usecs:

     $ sudo perf ftrace latency -T dput -a sleep 1
     #   DURATION     |      COUNT | GRAPH                          |
          0 - 1    us |    2098375 | #############################  |
          1 - 2    us |         61 |                                |
          2 - 4    us |         33 |                                |
          4 - 8    us |         13 |                                |
          8 - 16   us |        124 |                                |
         16 - 32   us |        123 |                                |
         32 - 64   us |          1 |                                |
         64 - 128  us |          0 |                                |
        128 - 256  us |          1 |                                |
        256 - 512  us |          0 |                                |

     Better granularity with nsec:

     $ sudo perf ftrace latency -T dput -a -n sleep 1
     #   DURATION     |      COUNT | GRAPH                          |
          0 - 1    us |          0 |                                |
          1 - 2    ns |          0 |                                |
          2 - 4    ns |          0 |                                |
          4 - 8    ns |          0 |                                |
          8 - 16   ns |          0 |                                |
         16 - 32   ns |          0 |                                |
         32 - 64   ns |          0 |                                |
         64 - 128  ns |    1163434 | ##############                 |
        128 - 256  ns |     914102 | #############                  |
        256 - 512  ns |        884 |                                |
        512 - 1024 ns |        613 |                                |
          1 - 2    us |         31 |                                |
          2 - 4    us |         17 |                                |
          4 - 8    us |          7 |                                |
          8 - 16   us |        123 |                                |
         16 - 32   us |         83 |                                |

  perf lock:

   - Add -c/--combine-locks option to merge lock instances in the same
     class into a single entry.

     # perf lock report -c
                    Name acquired contended avg wait(ns) total wait(ns) max wait(ns) min wait(ns)

           rcu_read_lock   251225         0            0              0            0            0
      hrtimer_bases.lock    39450         0            0              0            0            0
     &sb->s_type->i_l...    10301         1          662            662          662          662
        ptlock_ptr(page)    10173         2          701           1402          760          642
     &(ei->i_block_re...     8732         0            0              0            0            0
            &xa->xa_lock     8088         0            0              0            0            0
             &base->lock     6705         0            0              0            0            0
             &p->pi_lock     5549         0            0              0            0            0
     &dentry->d_lockr...     5010         4         1274           5097         1844          789
               &ep->lock     3958         0            0              0            0            0

      - Add -F/--field option to customize the list of fields to output:

     $ perf lock report -F contended,wait_max -k avg_wait
                     Name contended max wait(ns) avg wait(ns)

           slock-AF_INET6         1        23543        23543
        &lruvec->lru_lock         5        18317        11254
           slock-AF_INET6         1        10379        10379
               rcu_node_1         1         2104         2104
      &dentry->d_lockr...         1         1844         1844
      &dentry->d_lockr...         1         1672         1672
         &newf->file_lock        15         2279         1025
      &dentry->d_lockr...         1          792          792

   - Add --synth=no option for record, as there is no need to symbolize,
     lock names comes from the tracepoints.

  perf record:

   - Threaded recording, opt-in, via the new --threads command line
     option.

   - Improve AMD IBS (Instruction-Based Sampling) error handling
     messages.

  perf script:

   - Add 'brstackinsnlen' field (use it with -F) for branch stacks.

   - Output branch sample type in 'perf script'.

  perf report:

   - Add "addr_from" and "addr_to" sort dimensions.

   - Print branch stack entry type in 'perf report --dump-raw-trace'

   - Fix symbolization for chrooted workloads.

  Hardware tracing:

  Intel PT:

   - Add CFE (Control Flow Event) and EVD (Event Data) packets support.

   - Add MODE.Exec IFLAG bit support.

     Explanation about these features from the "Intel® 64 and IA-32
     architectures software developer’s manual combined volumes: 1, 2A,
     2B, 2C, 2D, 3A, 3B, 3C, 3D, and 4" PDF at:

        https://cdrdv2.intel.com/v1/dl/getContent/671200

     At page 3951:
      "32.2.4

       Event Trace is a capability that exposes details about the
       asynchronous events, when they are generated, and when their
       corresponding software event handler completes execution. These
       include:

        o Interrupts, including NMI and SMI, including the interrupt
          vector when defined.

        o Faults, exceptions including the fault vector.

           - Page faults additionally include the page fault address,
             when in context.

        o Event handler returns, including IRET and RSM.

        o VM exits and VM entries.¹

           - VM exits include the values written to the “exit reason”
             and “exit qualification” VMCS fields. INIT and SIPI events.

        o TSX aborts, including the abort status returned for the RTM
          instructions.

        o Shutdown.

       Additionally, it provides indication of the status of the
       Interrupt Flag (IF), to indicate when interrupts are masked"

  ARM CoreSight:

   - Use advertised caps/min_interval as default sample_period on ARM
     spe.

   - Update deduction of TRCCONFIGR register for branch broadcast on
     ARM's CoreSight ETM.

  Vendor Events (JSON):

  Intel:

   - Update events and metrics for: Alderlake, Broadwell, Broadwell DE,
     BroadwellX, CascadelakeX, Elkhartlake, Bonnell, Goldmont,
     GoldmontPlus, Westmere EP-DP, Haswell, HaswellX, Icelake, IcelakeX,
     Ivybridge, Ivytown, Jaketown, Knights Landing, Nehalem EP,
     Sandybridge, Silvermont, Skylake, Skylake Server, SkylakeX,
     Tigerlake, TremontX, Westmere EP-SP, and Westmere EX.

  ARM:

   - Add support for HiSilicon CPA PMU aliasing.

  perf stat:

   - Fix forked applications enablement of counters.

   - The 'slots' should only be printed on a different order than the
     one specified on the command line when 'topdown' events are
     present, fix it.

  Miscellaneous:

   - Sync msr-index, cpufeatures header files with the kernel sources.

   - Stop using some deprecated libbpf APIs in 'perf trace'.

   - Fix some spelling mistakes.

   - Refactor the maps pointers usage to pave the way for using refcount
     debugging.

   - Only offer the --tui option on perf top, report and annotate when
     perf was built with libslang.

   - Don't mention --to-ctf in 'perf data --help' when not linking with
     the required library, libbabeltrace.

   - Use ARRAY_SIZE() instead of ad hoc equivalent, spotted by
     array_size.cocci.

   - Enhance the matching of sub-commands abbreviations:
	'perf c2c rec' -> 'perf c2c record'
	'perf c2c recport -> error

   - Set build-id using build-id header on new mmap records.

   - Fix generation of 'perf --version' string.

  perf test:

   - Add test for the arm_spe event.

   - Add test to check unwinding using fame-pointer (fp) mode on arm64.

   - Make metric testing more robust in 'perf test'.

   - Add error message for unsupported branch stack cases.

  libperf:

   - Add API for allocating new thread map array.

   - Fix typo in perf_evlist__open() failure error messages in libperf
     tests.

  perf c2c:

   - Replace bitmap_weight() with bitmap_empty() where appropriate"

* tag 'perf-tools-for-v5.18-2022-03-26' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (143 commits)
  perf evsel: Improve AMD IBS (Instruction-Based Sampling) error handling messages
  perf python: Add perf_env stubs that will be needed in evsel__open_strerror()
  perf tools: Enhance the matching of sub-commands abbreviations
  libperf tests: Fix typo in perf_evlist__open() failure error messages
  tools arm64: Import cputype.h
  perf lock: Add -F/--field option to control output
  perf lock: Extend struct lock_key to have print function
  perf lock: Add --synth=no option for record
  tools headers cpufeatures: Sync with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  perf stat: Fix forked applications enablement of counters
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf evsel: Make evsel__env() always return a valid env
  perf build-id: Fix spelling mistake "Cant" -> "Can't"
  perf header: Fix spelling mistake "could't" -> "couldn't"
  perf script: Add 'brstackinsnlen' for branch stacks
  perf parse-events: Move slots only with topdown
  perf ftrace latency: Update documentation
  perf ftrace latency: Add -n/--use-nsec option
  perf tools: Fix version kernel tag
  ...