diff options
Diffstat (limited to 'tools/perf/util/session.c')
| -rw-r--r-- | tools/perf/util/session.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 3d5604739493..3ae69550fa0b 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -852,6 +852,24 @@ done: flush_sample_queue(self, ops); out_err: ui_progress__delete(progress); + + if (ops->lost == event__process_lost && + self->hists.stats.total_lost != 0) { + ui__warning("Processed %Lu events and LOST %Lu!\n\n" + "Check IO/CPU overload!\n\n", + self->hists.stats.total_period, + self->hists.stats.total_lost); + } + + if (self->hists.stats.nr_unknown_events != 0) { + ui__warning("Found %u unknown events!\n\n" + "Is this an older tool processing a perf.data " + "file generated by a more recent tool?\n\n" + "If that is not the case, consider " + "reporting to linux-kernel@vger.kernel.org.\n\n", + self->hists.stats.nr_unknown_events); + } + return err; } |