linux-stable.git/tools/perf, branch v7.1.4

perf trace beauty fcntl: Fix build with older kernel headers

2026-07-18T14:55:16+00:00

commit 7ee7f48413c42b90230de4a8e40898b757bc8e82 upstream.

Toolchains with older kernel headers that do not include upstream commit
c75b1d9421f80f41 ("fs: add fcntl() interface for setting/getting write
life time hints") will now fail to build perf due to missing definitions
for F_GET_RW_HINT/F_SET_RW_HINT/F_GET_FILE_RW_HINT/F_SET_FILE_RW_HINT.

Provide a fallback definition for these when they are not already
defined.

Fixes: 9c47f66748381ecb ("perf trace beauty fcntl: Basic 'arg' beautifier")
Reviewed-by: Ian Rogers 
Signed-off-by: Florian Fainelli 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Markus Mayer 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

perf trace: Update beautifier script for clone flags

2026-05-14T21:48:32+00:00

According to the change in the sched.h, update the script to generate
the flags array like below.  Note that '+1' is needed to detect bitmask
pattern at index 0.

  $ cat tools/perf/trace/beauty/generated/clone_flags_array.c
  static const char *clone_flags[] = {
  	[ilog2(0x00000100) + 1] = "VM",
  	[ilog2(0x00000200) + 1] = "FS",
  	[ilog2(0x00000400) + 1] = "FILES",
  	[ilog2(0x00000800) + 1] = "SIGHAND",
  	[ilog2(0x00001000) + 1] = "PIDFD",
  	[ilog2(0x00002000) + 1] = "PTRACE",
  	[ilog2(0x00004000) + 1] = "VFORK",
  	[ilog2(0x00008000) + 1] = "PARENT",
  	[ilog2(0x00010000) + 1] = "THREAD",
  	[ilog2(0x00020000) + 1] = "NEWNS",
  	[ilog2(0x00040000) + 1] = "SYSVSEM",
  	[ilog2(0x00080000) + 1] = "SETTLS",
  	[ilog2(0x00100000) + 1] = "PARENT_SETTID",
  	[ilog2(0x00200000) + 1] = "CHILD_CLEARTID",
  	[ilog2(0x00400000) + 1] = "DETACHED",
  	[ilog2(0x00800000) + 1] = "UNTRACED",
  	[ilog2(0x01000000) + 1] = "CHILD_SETTID",
  	[ilog2(0x02000000) + 1] = "NEWCGROUP",
  	[ilog2(0x04000000) + 1] = "NEWUTS",
  	[ilog2(0x08000000) + 1] = "NEWIPC",
  	[ilog2(0x10000000) + 1] = "NEWUSER",
  	[ilog2(0x20000000) + 1] = "NEWPID",
  	[ilog2(0x40000000) + 1] = "NEWNET",
  	[ilog2(0x80000000) + 1] = "IO",
  	[ilog2(0x00000080) + 1] = "NEWTIME",
  	[32 + 1] = "CLEAR_SIGHAND",
  	[33 + 1] = "INTO_CGROUP",
  	[34 + 1] = "AUTOREAP",
  	[35 + 1] = "NNP",
  	[36 + 1] = "PIDFD_AUTOKILL",
  	[37 + 1] = "EMPTY_MNTNS",
  };

This was found by Sashiko during review.

Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim

perf trace: Add beautifier script for fsmount flags

2026-05-14T21:48:32+00:00

And move the existing one to fsmount_attr.sh to be more precise.
Now the fsmount_flags[] is generated from the mount.h like below.
The ilog2() + 1 is an existing pattern to handle bit flags.

  $ cat tools/perf/trace/beauty/generated/fsmount_arrays.c
  static const char *fsmount_flags[] = {
  	[ilog2(0x00000001) + 1] = "CLOEXEC",
  	[ilog2(0x00000002) + 1] = "NAMESPACE",
  };

It was found by Sashiko during the review.

Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim

perf build: Add make check-headers target

2026-05-14T21:48:32+00:00

Don't print header differences during the perf build as it's noisy.
Mostly people won't care and find it annoying.

As it's to improve perf trace beautifier to catch up new changes mostly
in UAPIs, we can make it a separate build target and call it
occasionally.  Make it and build-test related targets phony.

Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim

perf trace: Sync uapi/linux/sched.h with the kernel source

2026-05-14T21:48:32+00:00

To pick up changes from:

 9d4e752a24f740b3 ("namespace: allow creating empty mount namespaces")
 c8134b5f13ae959d ("pidfd: add CLONE_PIDFD_AUTOKILL")
 24baca56fafc33d4 ("clone: add CLONE_NNP")
 12ae2c81b21cfaa1 ("clone: add CLONE_AUTOREAP")
 2e7af192697ef2a7 ("sched/deadline: Add reporting of runtime left & ...")

This would be used to beautify scheduler syscall arguments and not to
affect builds of other tools (e.g. objtool).

Please see tools/include/uapi/README.

Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim

perf trace: Sync uapi/linux/mount.h with the kernel source

2026-05-14T21:48:32+00:00

To pick up changes from:

 5e8969bd19271241 ("mount: add FSMOUNT_NAMESPACE")

This would be used to beautify mount syscall arguments and not to
affect builds of other tools (e.g. objtool).

Please see tools/include/uapi/README.

Reviewed-by: Ian Rogers 
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Namhyung Kim

perf trace: Sync uapi/linux/fs.h with the kernel source

2026-05-14T21:48:32+00:00

To pick up changes from:

 1f662195dbc07a66 ("fs: add generic FS_IOC_SHUTDOWN definitions")

This would be used to beautify filesystem syscall arguments and not to
affect builds of other tools (e.g. objtool).

Please see tools/include/uapi/README.

Reviewed-by: Ian Rogers 
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Namhyung Kim

perf trace: Sync linux/socket.h with the kernel source

2026-05-14T21:48:32+00:00

To pick up changes from:

 c66e0f453d1afa82 ("net: use ktime_t in struct scm_timestamping_internal")

This would be used to beautify networking syscall arguments and not to
affect builds of other tools (e.g. objtool).

Please see tools/include/uapi/README.

Reviewed-by: Ian Rogers 
Cc: netdev@vger.kernel.org
Signed-off-by: Namhyung Kim

Merge tag 'perf-tools-for-v7.1-2026-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

2026-04-18T16:24:56+00:00

Pull perf tools updates from Namhyung Kim:
 "perf report:

   - Add 'comm_nodigit' sort key to combine similar threads that only
     have different numbers in the comm. In the following example, the
     'comm_nodigit' will have samples from all threads starting with
     "bpfrb/" into an entry "bpfrb/".

        $ perf report -s comm_nodigit,comm -H
        ...
        #
        #    Overhead  CommandNoDigit / Command
        # ...........  ........................
        #
            20.30%     swapper
               20.30%     swapper
            13.37%     chrome
               13.37%     chrome
            10.07%     bpfrb/
                7.47%     bpfrb/0
                0.70%     bpfrb/1
                0.47%     bpfrb/3
                0.46%     bpfrb/2
                0.25%     bpfrb/4
                0.23%     bpfrb/5
                0.20%     bpfrb/6
                0.14%     bpfrb/10
                0.07%     bpfrb/7

   - Support flat layout for symfs. The --symfs option is to specify the
     location of debugging symbol files. The default 'hierarchy' layout
     would search the symbol file using the same path of the original
     file under the symfs root. The new 'flat' layout would search only
     in the root directory.

   - Update 'simd' sort key for ARM SIMD flags to cover ASE/SME and more
     predicate flags.

  perf stat:

   - Add --pmu-filter option to select specific PMUs. This would be
     useful when you measure metrics from multiple instance of uncore
     PMUs with similar names.

        # perf stat -M cpa_p0_avg_bw
         Performance counter stats for 'system wide':

            19,417,779,115      hisi_sicl0_cpa0/cpa_cycles/      #     0.00 cpa_p0_avg_bw
                         0      hisi_sicl0_cpa0/cpa_p0_wr_dat/
                         0      hisi_sicl0_cpa0/cpa_p0_rd_dat_64b/
                         0      hisi_sicl0_cpa0/cpa_p0_rd_dat_32b/
            19,417,751,103      hisi_sicl10_cpa0/cpa_cycles/     #     0.00 cpa_p0_avg_bw
                         0      hisi_sicl10_cpa0/cpa_p0_wr_dat/
                         0      hisi_sicl10_cpa0/cpa_p0_rd_dat_64b/
                         0      hisi_sicl10_cpa0/cpa_p0_rd_dat_32b/
            19,417,730,679      hisi_sicl2_cpa0/cpa_cycles/      #     0.31 cpa_p0_avg_bw
                75,635,749      hisi_sicl2_cpa0/cpa_p0_wr_dat/
                18,520,640      hisi_sicl2_cpa0/cpa_p0_rd_dat_64b/
                         0      hisi_sicl2_cpa0/cpa_p0_rd_dat_32b/
            19,417,674,227      hisi_sicl8_cpa0/cpa_cycles/      #     0.00 cpa_p0_avg_bw
                         0      hisi_sicl8_cpa0/cpa_p0_wr_dat/
                         0      hisi_sicl8_cpa0/cpa_p0_rd_dat_64b/
                         0      hisi_sicl8_cpa0/cpa_p0_rd_dat_32b/

              19.417734480 seconds time elapsed

     With --pmu-filter, users can select only hisi_sicl2_cpa0 PMU.

        # perf stat --pmu-filter hisi_sicl2_cpa0 -M cpa_p0_avg_bw
         Performance counter stats for 'system wide':

             6,234,093,559      cpa_cycles                       #     0.60 cpa_p0_avg_bw
                50,548,465      cpa_p0_wr_dat
                 7,552,182      cpa_p0_rd_dat_64b
                         0      cpa_p0_rd_dat_32b

               6.234139320 seconds time elapsed

  Data type profiling:

   - Quality improvements by tracking register state more precisely

   - Ensure array members to get the type

   - Handle more cases for global variables

  Vendor event/metric updates:

   - Update various Intel events and metrics

   - Add NVIDIA Tegra 410 Olympus events

  Internal changes:

   - Verify perf.data header for maliciously crafted files

   - Update perf test to cover more usages and make them robust

   - Move a couple of copied kernel headers not to annoy objtool build

   - Fix a bug in map sorting in name order

   - Remove some unused codes

  Misc:

   - Fix module symbol resolution with non-zero text address

   - Add -t/--threads option to `perf bench mem mmap`

   - Track duration of exit*() syscall by `perf trace -s`

   - Add core.addr2line-timeout and core.addr2line-disable-warn config
     items"

* tag 'perf-tools-for-v7.1-2026-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (131 commits)
  perf loongarch: Fix build failure with CONFIG_LIBDW_DWARF_UNWIND
  perf annotate: Use jump__delete when freeing LoongArch jumps
  perf test: Fixes for check branch stack sampling
  perf test: Fix inet_pton probe failure and unroll call graph
  perf build: fix "argument list too long" in second location
  perf header: Add sanity checks to HEADER_BPF_BTF processing
  perf header: Sanity check HEADER_BPF_PROG_INFO
  perf header: Sanity check HEADER_PMU_CAPS
  perf header: Sanity check HEADER_HYBRID_TOPOLOGY
  perf header: Sanity check HEADER_CACHE
  perf header: Sanity check HEADER_GROUP_DESC
  perf header: Sanity check HEADER_PMU_MAPPINGS
  perf header: Sanity check HEADER_MEM_TOPOLOGY
  perf header: Sanity check HEADER_NUMA_TOPOLOGY
  perf header: Sanity check HEADER_CPU_TOPOLOGY
  perf header: Sanity check HEADER_NRCPUS and HEADER_CPU_DOMAIN_INFO
  perf header: Bump up the max number of command line args allowed
  perf header: Validate nr_domains when reading HEADER_CPU_DOMAIN_INFO
  perf sample: Fix documentation typo
  perf arm_spe: Improve SIMD flags setting
  ...

perf loongarch: Fix build failure with CONFIG_LIBDW_DWARF_UNWIND

2026-04-14T07:36:53+00:00

Building perf for LoongArch fails when CONFIG_LIBDW_DWARF_UNWIND is
enabled because unwind-libdw.o is still referenced in
arch/loongarch/util/Build.

Fixes: e62fae9d9e8 ("perf unwind-libdw: Fix a cross-arch unwinding bug")
Signed-off-by: WANG Rui 
Acked-by: Huacai Chen 
Signed-off-by: Namhyung Kim