diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-09-30 17:13:26 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-09-30 18:34:38 -0300 |
| commit | dfc431cbdc3a3c0556f1cd462d724d107cc15a9e (patch) | |
| tree | a3d232e0e2d81a03e0a6c1225d3e2b4d889df996 /tools/perf/builtin-list.c | |
| parent | 6cca13bdf5a5d561a855259689874e0c7266eec3 (diff) | |
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>
Diffstat (limited to 'tools/perf/builtin-list.c')
| -rw-r--r-- | tools/perf/builtin-list.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index af5bd0514108..602414040344 100644 --- a/tools/perf/builtin-list.c +++ b/tools/perf/builtin-list.c @@ -36,7 +36,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) setup_pager(); - if (!raw_dump) + if (!raw_dump && pager_in_use()) printf("\nList of pre-defined events (to be used in -e):\n\n"); if (argc == 0) { |