Commit dfc431cb authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 6cca13bd

tools/perf/builtin-list.c

+1 −1
Original line number Diff line number Diff line
@@ -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) {

tools/perf/util/parse-events.c

+7 −6
Original line number Diff line number Diff line
@@ -1534,7 +1534,7 @@ restart: 
		printf("  %-50s [%s]\n", evt_list[evt_i++],

				event_type_descriptors[PERF_TYPE_TRACEPOINT]);

	}

	if (evt_num)

	if (evt_num && pager_in_use())

		printf("\n");



out_free:
@@ -1690,7 +1690,7 @@ restart: 
		printf("  %-50s [%s]\n", evt_list[evt_i++],

				event_type_descriptors[PERF_TYPE_HW_CACHE]);

	}

	if (evt_num)

	if (evt_num && pager_in_use())

		printf("\n");



out_free:
@@ -1763,7 +1763,7 @@ restart: 
		}

		printf("  %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);

	}

	if (evt_num)

	if (evt_num && pager_in_use())

		printf("\n");



out_free:
@@ -1804,12 +1804,13 @@ void print_events(const char *event_glob, bool name_only) 
		printf("  %-50s [%s]\n",

		       "cpu/t1=v1[,t2=v2,t3 ...]/modifier",

		       event_type_descriptors[PERF_TYPE_RAW]);

		printf("   (see 'man perf-list' on how to encode it)\n");

		printf("\n");

		if (pager_in_use())

			printf("   (see 'man perf-list' on how to encode it)\n\n");



		printf("  %-50s [%s]\n",

		       "mem:<addr>[/len][:access]",

			event_type_descriptors[PERF_TYPE_BREAKPOINT]);

		if (pager_in_use())

			printf("\n");

	}

tools/perf/util/pmu.c

+1 −1
Original line number Diff line number Diff line
@@ -1026,7 +1026,7 @@ void print_pmu_events(const char *event_glob, bool name_only) 
		printf("  %-50s [Kernel PMU event]\n", aliases[j]);

		printed++;

	}

	if (printed)

	if (printed && pager_in_use())

		printf("\n");

out_free:

	for (j = 0; j < len; j++)

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