• Arnaldo Carvalho de Melo's avatar
    perf test BPF: Fixup BPF test using epoll_pwait syscall function probe · eccb1b93
    Arnaldo Carvalho de Melo authored
    Since e145242e ("syscalls/core, syscalls/x86: Clean up syscall stub
    naming convention") changed the main syscall function for 'epoll_pwait'
    to something other than the expected 'SyS_epoll_pwait the' 'perf test
    BPF' entries started failing, fix it by using something called from the
    main syscall function instead, 'epoll_wait', which should keep this test
    working in older kernels too.
      # perf test BPF
      40: BPF filter                           :
      40.1: Basic BPF filtering                : FAILED!
      40.2: BPF pinning                        : Skip
      40.3: BPF prologue generation            : Skip
      40.4: BPF relocation checker             : Skip
    If we use -v for that test we see the problem:
        Probe point 'SyS_epoll_pwait' not found.
      # perf test BPF
      40: BPF filter                           :
      40.1: Basic BPF filtering                : Ok
      40.2: BPF pinning                        : Ok
      40.3: BPF prologue generation            : Ok
      40.4: BPF relocation checker             : Ok
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Dominik Brodowski <linux@dominikbrodowski.net>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/r/tip-y24nmn70cs2am8jh4i344dng@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
bpf-script-example.c 1.27 KB