• Arnaldo Carvalho de Melo's avatar
    tools headers UAPI: Sync arch prctl headers with the kernel sources · 29719e31
    Arnaldo Carvalho de Melo authored
    To pick the changes in this cset:
    
      a03c376e ("x86/arch_prctl: Add AMX feature numbers as ABI constants")
      23e5d9ec ("x86/mm/iommu/sva: Make LAM and SVA mutually exclusive")
      2f8794bd ("x86/mm: Provide arch_prctl() interface for LAM")
    
    This picks these new prctls in a third range, that was also added to the
    tools/perf/trace/beauty/arch_prctl.c beautifier.
    
      $ tools/perf/trace/beauty/x86_arch_prctl.sh > /tmp/before
      $ cp arch/x86/include/uapi/asm/prctl.h tools/arch/x86/include/uapi/asm/prctl.h
      $ tools/perf/trace/beauty/x86_arch_prctl.sh > /tmp/after
      $ diff -u /tmp/before /tmp/after
      @@ -20,3 +20,11 @@
       	[0x2003 - 0x2001]= "MAP_VDSO_64",
       };
    
      +#define x86_arch_prctl_codes_3_offset 0x4001
      +static const char *x86_arch_prctl_codes_3[] = {
      +	[0x4001 - 0x4001]= "GET_UNTAG_MASK",
      +	[0x4002 - 0x4001]= "ENABLE_TAGGED_ADDR",
      +	[0x4003 - 0x4001]= "GET_MAX_TAG_BITS",
      +	[0x4004 - 0x4001]= "FORCE_TAGGED_SVA",
      +};
      +
      $
    
    With this 'perf trace' can translate those numbers into strings and use
    the strings in filter expressions:
    
      # perf trace -e prctl
           0.000 ( 0.011 ms): DOM Worker/3722622 prctl(option: SET_NAME, arg2: 0x7f9c014b7df5)     = 0
           0.032 ( 0.002 ms): DOM Worker/3722622 prctl(option: SET_NAME, arg2: 0x7f9bb6b51580)     = 0
           5.452 ( 0.003 ms): StreamT~ns #30/3722623 prctl(option: SET_NAME, arg2: 0x7f9bdbdfeb70) = 0
           5.468 ( 0.002 ms): StreamT~ns #30/3722623 prctl(option: SET_NAME, arg2: 0x7f9bdbdfea70) = 0
          24.494 ( 0.009 ms): IndexedDB #556/3722624 prctl(option: SET_NAME, arg2: 0x7f562a32ae28) = 0
          24.540 ( 0.002 ms): IndexedDB #556/3722624 prctl(option: SET_NAME, arg2: 0x7f563c6d4b30) = 0
         670.281 ( 0.008 ms): systemd-userwo/3722339 prctl(option: SET_NAME, arg2: 0x564be30805c8) = 0
         670.293 ( 0.002 ms): systemd-userwo/3722339 prctl(option: SET_NAME, arg2: 0x564be30800f0) = 0
      ^C#
    
    This addresses this perf build warning:
    
      Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/prctl.h' differs from latest version at 'arch/x86/include/uapi/asm/prctl.h'
      diff -u tools/arch/x86/include/uapi/asm/prctl.h arch/x86/include/uapi/asm/prctl.h
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Chang S. Bae <chang.seok.bae@intel.com>
    Cc: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: Ian Rogers <irogers@google.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Link: https://lore.kernel.org/lkml/ZGTjNPpD3FOWfetM@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    29719e31
prctl.h 835 Bytes