diff options
Diffstat (limited to 'tools/perf/builtin-trace.c')
| -rw-r--r-- | tools/perf/builtin-trace.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 589e0412652a..7081d7ea12e5 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2092,8 +2092,18 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, union perf_event *event __maybe_unused, struct perf_sample *sample) { - struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); + struct thread *thread; int callchain_ret = 0; + /* + * Check if we called perf_evsel__disable(evsel) due to, for instance, + * this event's max_events having been hit and this is an entry coming + * from the ring buffer that we should discard, since the max events + * have already been considered/printed. + */ + if (evsel->disabled) + return 0; + + thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); if (sample->callchain) { callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor); @@ -2142,6 +2152,11 @@ static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, sample->raw_data, sample->raw_size, trace->output); ++trace->nr_events_printed; + + if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) { + perf_evsel__disable(evsel); + perf_evsel__close(evsel); + } } } @@ -2726,7 +2741,7 @@ next_event: int timeout = done ? 100 : -1; if (!draining && perf_evlist__poll(evlist, timeout) > 0) { - if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0) + if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP | POLLNVAL) == 0) draining = true; goto again; |