• Arnaldo Carvalho de Melo's avatar
    perf tests shell lib: Use a wildcard to remove the vfs_getname probe · 21316ac6
    Arnaldo Carvalho de Melo authored
    In some situations the vfs_getname is being added both as requested and
    with a _1 suffix (inlines?):
    
      probe:vfs_getname_1  (on getname_flags:63@acme/git/linux/fs/namei.c with pathname)
    
    This ends up making the cleanup to miss that one, as it removes just
    'probe:vfs_getname', which makes the second test to use this probe point
    to fail, since it finds that leftover from the first test, use a
    wildcard to remove both.
    
    Before:
    
      # perf test 60 61 62 63
      60: Use vfs_getname probe to get syscall args filenames   : FAILED!
      61: probe libc's inet_pton & backtrace it with ping       : Ok
      62: Check open filename arg using perf trace + vfs_getname: FAILED!
      63: Add vfs_getname probe to get syscall args filenames   : Ok
    
    After:
    
      # perf test 60 61 62 63
      60: Use vfs_getname probe to get syscall args filenames   : Ok
      61: probe libc's inet_pton & backtrace it with ping       : Ok
      62: Check open filename arg using perf trace + vfs_getname: Ok
      63: Add vfs_getname probe to get syscall args filenames   : Ok
      #
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Masami Hiramatsu <mhiramat@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-2k5kutwr4ds36adiakyb4yvy@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    21316ac6
probe_vfs_getname.sh 719 Bytes