• Arnaldo Carvalho de Melo's avatar
    perf trace: Mark the rlim arg in the prlimit64 and setrlimit syscalls as coming from user space · 375f9262
    Arnaldo Carvalho de Melo authored
    With that it uses the generic BTF based pretty printer:
    
      root@number:~# perf trace -e prlimit64
           0.000 ( 0.004 ms): :3417020/3417020 prlimit64(resource: NOFILE, old_rlim: 0x7fb8842fe3b0)      = 0
           0.126 ( 0.003 ms): Chroot Helper/3417022 prlimit64(resource: NOFILE, old_rlim: 0x7fb8842fdfd0) = 0
          12.557 ( 0.005 ms): firefox/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1b80)        = 0
          26.640 ( 0.006 ms): MainThread/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1780)     = 0
          27.553 ( 0.002 ms): Web Content/3417020 prlimit64(resource: AS, old_rlim: 0x7ffe9ade1660)       = 0
          29.405 ( 0.003 ms): Web Content/3417020 prlimit64(resource: NOFILE, old_rlim: 0x7ffe9ade0c80)   = 0
          30.471 ( 0.002 ms): Web Content/3417020 prlimit64(resource: RTTIME, old_rlim: 0x7ffe9ade1370)   = 0
          30.485 ( 0.001 ms): Web Content/3417020 prlimit64(resource: RTTIME, new_rlim: (struct rlimit64){.rlim_cur = (__u64)50000,.rlim_max = (__u64)200000,}) = 0
          31.779 ( 0.001 ms): Web Content/3417020 prlimit64(resource: STACK, old_rlim: 0x7ffe9ade1670)    = 0
      ^Croot@number:~#
    
    Better than before, still needs improvements in the configurability of
    the libbpf BTF dumper to get it to the strace output standard.
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alan Maguire <alan.maguire@oracle.com>
    Cc: Howard Chu <howardchu95@gmail.com>
    Cc: Ian Rogers <irogers@google.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kan Liang <kan.liang@linux.intel.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Link: https://lore.kernel.org/lkml/ZuBQI-f8CGpuhIdH@x1Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    375f9262
builtin-trace.c 157 KB