perf list: Remove blank lines, headers when piping output
authorArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 30 Sep 2015 20:13:26 +0000 (17:13 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 30 Sep 2015 21:34:38 +0000 (18:34 -0300)
commitdfc431cbdc3a3c0556f1cd462d724d107cc15a9e
treea3d232e0e2d81a03e0a6c1225d3e2b4d889df996
parent6cca13bdf5a5d561a855259689874e0c7266eec3
perf list: Remove blank lines, headers when piping output

So that one can, for instance, use it with wc -l:

  # perf list *:*write* | wc -l
  60

Or to look for the "bio" tracepoints, without 'perf list' headers:

  # perf list *:*bio* | head
    block:block_bio_backmerge                          [Tracepoint event]
    block:block_bio_bounce                             [Tracepoint event]
    block:block_bio_complete                           [Tracepoint event]
    block:block_bio_frontmerge                         [Tracepoint event]
    block:block_bio_queue                              [Tracepoint event]
    block:block_bio_remap                              [Tracepoint event]
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ts7sc0x8u4io4cifzkup4j44@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-list.c
tools/perf/util/parse-events.c
tools/perf/util/pmu.c