diff options
Diffstat (limited to 'tools/perf/builtin-evlist.c')
| -rw-r--r-- | tools/perf/builtin-evlist.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c index 7117656939e7..fb6e2c3c24c8 100644 --- a/tools/perf/builtin-evlist.c +++ b/tools/perf/builtin-evlist.c @@ -19,7 +19,8 @@ #include "util/tool.h" #include "util/util.h" -static int process_header_feature(struct perf_session *session __maybe_unused, +static int process_header_feature(const struct perf_tool *tool __maybe_unused, + struct perf_session *session __maybe_unused, union perf_event *event __maybe_unused) { session_done = 1; @@ -35,13 +36,13 @@ static int __cmd_evlist(const char *file_name, struct perf_attr_details *details .mode = PERF_DATA_MODE_READ, .force = details->force, }; - struct perf_tool tool = { - /* only needed for pipe mode */ - .attr = perf_event__process_attr, - .feature = process_header_feature, - }; - bool has_tracepoint = false; + struct perf_tool tool; + bool has_tracepoint = false, has_group = false; + perf_tool__init(&tool, /*ordered_events=*/false); + /* only needed for pipe mode */ + tool.attr = perf_event__process_attr; + tool.feature = process_header_feature; session = perf_session__new(&data, &tool); if (IS_ERR(session)) return PTR_ERR(session); @@ -54,11 +55,17 @@ 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; } |