diff options
Diffstat (limited to 'tools/perf/builtin-evlist.c')
| -rw-r--r-- | tools/perf/builtin-evlist.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c index 818ab21c3f73..a9bd7bbef5a9 100644 --- a/tools/perf/builtin-evlist.c +++ b/tools/perf/builtin-evlist.c @@ -36,7 +36,7 @@ static int __cmd_evlist(const char *file_name, struct perf_attr_details *details .force = details->force, }; struct perf_tool tool; - bool has_tracepoint = false; + bool has_tracepoint = false, has_group = false; perf_tool__init(&tool, /*ordered_events=*/false); /* only needed for pipe mode */ @@ -54,11 +54,17 @@ static int __cmd_evlist(const char *file_name, struct perf_attr_details *details if (pos->core.attr.type == PERF_TYPE_TRACEPOINT) has_tracepoint = true; + + if (!evsel__is_group_leader(pos)) + has_group = true; } if (has_tracepoint && !details->trace_fields) printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n"); + if (has_group && !details->event_group) + printf("# Tip: use 'perf evlist -g' to show group information\n"); + perf_session__delete(session); return 0; } |