From dfc431cbdc3a3c0556f1cd462d724d107cc15a9e Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 30 Sep 2015 17:13:26 -0300 Subject: 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 Cc: Borislav Petkov Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-ts7sc0x8u4io4cifzkup4j44@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-list.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-list.c') 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) { -- cgit v1.2.3-59-g8ed1b