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-rw-r--r--tools/perf/util/session.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 078d49626494..5d61242a6e64 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1499,10 +1499,27 @@ int perf_session__register_idle_thread(struct perf_session *session)
return err;
}
+static void
+perf_session__warn_order(const struct perf_session *session)
+{
+ const struct ordered_events *oe = &session->ordered_events;
+ struct perf_evsel *evsel;
+ bool should_warn = true;
+
+ evlist__for_each_entry(session->evlist, evsel) {
+ if (evsel->attr.write_backward)
+ should_warn = false;
+ }
+
+ if (!should_warn)
+ return;
+ if (oe->nr_unordered_events != 0)
+ ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
+}
+
static void perf_session__warn_about_errors(const struct perf_session *session)
{
const struct events_stats *stats = &session->evlist->stats;
- const struct ordered_events *oe = &session->ordered_events;
if (session->tool->lost == perf_event__process_lost &&
stats->nr_events[PERF_RECORD_LOST] != 0) {
@@ -1559,8 +1576,7 @@ static void perf_session__warn_about_errors(const struct perf_session *session)
stats->nr_unprocessable_samples);
}
- if (oe->nr_unordered_events != 0)
- ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
+ perf_session__warn_order(session);
events_stats__auxtrace_error_warn(stats);