perf evlist: Add --group option
Add '-g/--group' option for showing event groups. For simplicity it is
currently not compatible with other options.
$ perf evlist --group
{ref-cycles,cycles}
$ perf evlist
ref-cycles
cycles
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1358845787-1350-20-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
index 1312a5e..85a5e35 100644
--- a/tools/perf/builtin-evlist.c
+++ b/tools/perf/builtin-evlist.c
@@ -39,6 +39,8 @@
OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
OPT_BOOLEAN('v', "verbose", &details.verbose,
"Show all event attr details"),
+ OPT_BOOLEAN('g', "group", &symbol_conf.event_group,
+ "Show event group information"),
OPT_END()
};
const char * const evlist_usage[] = {
@@ -50,5 +52,10 @@
if (argc)
usage_with_options(evlist_usage, options);
+ if (symbol_conf.event_group && (details.verbose || details.freq)) {
+ pr_err("--group option is not compatible with other options\n");
+ usage_with_options(evlist_usage, options);
+ }
+
return __cmd_evlist(input_name, &details);
}