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perf session: Report collisions in AUX records

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Just like the other flags in the AUX records, report a summary of the
Collisions if there were any.

Signed-off-by: Suzuki Poulouse <suzuki.poulose@arm.com>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
LPU-Reference: 20210728091219.527886-1-suzuki.poulose@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Suzuki K Poulose 2021-07-28 10:12:19 +01:00 committed by Arnaldo Carvalho de Melo
parent 538d9c1829
commit c68b421d8e
2 changed files with 10 additions and 0 deletions
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1
tools/perf/util/events_stats.h
View File

@ -30,6 +30,7 @@ struct events_stats {
u64 total_lost_samples;
u64 total_aux_lost;
u64 total_aux_partial;
u64 total_aux_collision;
u64 total_invalid_chains;
u32 nr_events[PERF_RECORD_HEADER_MAX];
u32 nr_lost_warned;

9
tools/perf/util/session.c
View File

@ -1541,6 +1541,8 @@ static int machines__deliver_event(struct machines *machines,
evlist->stats.total_aux_lost += 1;
if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
evlist->stats.total_aux_partial += 1;
if (event->aux.flags & PERF_AUX_FLAG_COLLISION)
evlist->stats.total_aux_collision += 1;
}
return tool->aux(tool, event, sample, machine);
case PERF_RECORD_ITRACE_START:
@ -1896,6 +1898,13 @@ static void perf_session__warn_about_errors(const struct perf_session *session)
"");
}
if (session->tool->aux == perf_event__process_aux &&
stats->total_aux_collision != 0) {
ui__warning("AUX data detected collision %" PRIu64 " times out of %u!\n\n",
stats->total_aux_collision,
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 "