path: root/tools/perf/builtin-list.c
diff options
authorYunlong Song <>2015-02-27 18:21:26 +0800
committerArnaldo Carvalho de Melo <>2015-02-27 15:51:51 -0300
commit161149513b3570ebd7fe14fc2ddc42cb46557e37 (patch)
treeb7ba7fbdd0a115ef64f6d9fd3763a87a1822bd69 /tools/perf/builtin-list.c
parentab0e48002db818c1937f105cd18001dfdd3ce056 (diff)
perf list: Allow listing events with 'tracepoint' prefix
If somebody happens to name an event with the beginning of 'tracepoint' (e.g. tracepoint_foo), then it will never be showed with perf list event_glob, thus we parse the argument 'tracepoint' more carefully for accuracy. Example: Before this patch: $ perf list tracepoint_foo:* jbd2:jbd2_start_commit [Tracepoint event] jbd2:jbd2_commit_locking [Tracepoint event] jbd2:jbd2_run_stats [Tracepoint event] block:block_rq_issue [Tracepoint event] block:block_bio_complete [Tracepoint event] block:block_bio_backmerge [Tracepoint event] block:block_getrq [Tracepoint event] ... ... As shown above, all of the tracepoint events are printed. In fact, the command's real intention is to print the events of tracepoint_foo. After this patch: $ perf list tracepoint_foo:* tracepoint_foo:tp_foo_enter [Tracepoint event] tracepoint_foo:tp_foo_exit [Tracepoint event] As shown above, only the events of tracepoint_foo are printed. Signed-off-by: Yunlong Song <> Cc: Ingo Molnar <> Cc: Paul Mackerras <> Cc: Peter Zijlstra <> Cc: Wang Nan <> Link: Signed-off-by: Arnaldo Carvalho de Melo <>
Diffstat (limited to 'tools/perf/builtin-list.c')
1 files changed, 1 insertions, 3 deletions
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index ad8018e26aa0..2acbcf0b554f 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -50,9 +50,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
for (i = 0; i < argc; ++i) {
- if (i)
- putchar('\n');
- if (strncmp(argv[i], "tracepoint", 10) == 0)
+ if (strcmp(argv[i], "tracepoint") == 0)
print_tracepoint_events(NULL, NULL, false);
else if (strcmp(argv[i], "hw") == 0 ||
strcmp(argv[i], "hardware") == 0)