]> git.itanic.dy.fi Git - linux-stable/commitdiff
tools/perf: Update tools's copy of powerpc syscall table
authorNamhyung Kim <namhyung@kernel.org>
Tue, 21 Nov 2023 22:56:47 +0000 (14:56 -0800)
committerNamhyung Kim <namhyung@kernel.org>
Wed, 22 Nov 2023 18:57:47 +0000 (10:57 -0800)
tldr; Just FYI, I'm carrying this on the perf tools tree.

Full explanation:

There used to be no copies, with tools/ code using kernel headers
directly. From time to time tools/perf/ broke due to legitimate kernel
hacking. At some point Linus complained about such direct usage. Then we
adopted the current model.

The way these headers are used in perf are not restricted to just
including them to compile something.

There are sometimes used in scripts that convert defines into string
tables, etc, so some change may break one of these scripts, or new MSRs
may use some different #define pattern, etc.

E.g.:

  $ ls -1 tools/perf/trace/beauty/*.sh | head -5
  tools/perf/trace/beauty/arch_errno_names.sh
  tools/perf/trace/beauty/drm_ioctl.sh
  tools/perf/trace/beauty/fadvise.sh
  tools/perf/trace/beauty/fsconfig.sh
  tools/perf/trace/beauty/fsmount.sh
  $
  $ tools/perf/trace/beauty/fadvise.sh
  static const char *fadvise_advices[] = {
        [0] = "NORMAL",
        [1] = "RANDOM",
        [2] = "SEQUENTIAL",
        [3] = "WILLNEED",
        [4] = "DONTNEED",
        [5] = "NOREUSE",
  };
  $

The tools/perf/check-headers.sh script, part of the tools/ build
process, points out changes in the original files.

So its important not to touch the copies in tools/ when doing changes in
the original kernel headers, that will be done later, when
check-headers.sh inform about the change to the perf tools hackers.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20231121225650.390246-12-namhyung@kernel.org
tools/perf/arch/powerpc/entry/syscalls/syscall.tbl

index e1412519b4ad9ae2a38750a1c4e3dce63ce83ecb..7fab411378f2dd7dda7b136e8fec9b28186e0fea 100644 (file)
 450    nospu   set_mempolicy_home_node         sys_set_mempolicy_home_node
 451    common  cachestat                       sys_cachestat
 452    common  fchmodat2                       sys_fchmodat2
+453    common  map_shadow_stack                sys_ni_syscall
+454    common  futex_wake                      sys_futex_wake
+455    common  futex_wait                      sys_futex_wait
+456    common  futex_requeue                   sys_futex_requeue