diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-trace.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 83df8db4f35..294da725a57 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -11,7 +11,7 @@ static char const *script_name; static char const *generate_script_lang; -static bool debug_ordering; +static bool debug_mode; static u64 last_timestamp; static u64 nr_unordered; @@ -92,7 +92,7 @@ static int process_sample_event(event_t *event, struct perf_session *session) } if (session->sample_type & PERF_SAMPLE_RAW) { - if (debug_ordering) { + if (debug_mode) { if (data.time < last_timestamp) { pr_err("Samples misordered, previous: %llu " "this: %llu\n", last_timestamp, @@ -116,6 +116,15 @@ static int process_sample_event(event_t *event, struct perf_session *session) return 0; } +static u64 nr_lost; + +static int process_lost_event(event_t *event, struct perf_session *session __used) +{ + nr_lost += event->lost.lost; + + return 0; +} + static struct perf_event_ops event_ops = { .sample = process_sample_event, .comm = event__process_comm, @@ -123,6 +132,7 @@ static struct perf_event_ops event_ops = { .event_type = event__process_event_type, .tracing_data = event__process_tracing_data, .build_id = event__process_build_id, + .lost = process_lost_event, .ordered_samples = true, }; @@ -141,8 +151,10 @@ static int __cmd_trace(struct perf_session *session) ret = perf_session__process_events(session, &event_ops); - if (debug_ordering) + if (debug_mode) { pr_err("Misordered timestamps: %llu\n", nr_unordered); + pr_err("Lost events: %llu\n", nr_lost); + } return ret; } @@ -554,8 +566,8 @@ static const struct option options[] = { "generate perf-trace.xx script in specified language"), OPT_STRING('i', "input", &input_name, "file", "input file name"), - OPT_BOOLEAN('d', "debug-ordering", &debug_ordering, - "check that samples time ordering is monotonic"), + OPT_BOOLEAN('d', "debug-mode", &debug_mode, + "do various checks like samples ordering and lost events"), OPT_END() }; |