Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a38f48e3 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf session: Warn when AUX data has been lost 



By default 'perf record' will postprocess the perf.data file to
determine build-ids.  When that happens, the number of lost perf events
is displayed.

Make that also happen for AUX events.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-7-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 83e19860

tools/perf/util/event.h

+1 −0
Original line number Diff line number Diff line
@@ -257,6 +257,7 @@ struct events_stats { 
	u64 total_non_filtered_period;

	u64 total_lost;

	u64 total_lost_samples;

	u64 total_aux_lost;

	u64 total_invalid_chains;

	u32 nr_events[PERF_RECORD_HEADER_MAX];

	u32 nr_non_filtered_samples;

tools/perf/util/session.c

+10 −0
Original line number Diff line number Diff line
@@ -1101,6 +1101,9 @@ static int machines__deliver_event(struct machines *machines, 
	case PERF_RECORD_UNTHROTTLE:

		return tool->unthrottle(tool, event, sample, machine);

	case PERF_RECORD_AUX:

		if (tool->aux == perf_event__process_aux &&

		    (event->aux.flags & PERF_AUX_FLAG_TRUNCATED))

			evlist->stats.total_aux_lost += 1;

		return tool->aux(tool, event, sample, machine);

	case PERF_RECORD_ITRACE_START:

		return tool->itrace_start(tool, event, sample, machine);
@@ -1346,6 +1349,13 @@ static void perf_session__warn_about_errors(const struct perf_session *session) 
		}

	}



	if (session->tool->aux == perf_event__process_aux &&

	    stats->total_aux_lost != 0) {

		ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",

			    stats->total_aux_lost,

			    stats->nr_events[PERF_RECORD_AUX]);

	}



	if (stats->nr_unknown_events != 0) {

		ui__warning("Found %u unknown events!\n\n"

			    "Is this an older tool processing a perf.data "