diff options
| -rw-r--r-- | tools/perf/builtin-top.c | 6 | ||||
| -rw-r--r-- | tools/perf/util/hist.h | 1 | ||||
| -rw-r--r-- | tools/perf/util/session.c | 10 |
3 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 94d55cb..5a88c0d 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -677,6 +677,12 @@ static void perf_event__process_sample(struct perf_tool *tool, return; } + if (!machine) { + pr_err("%u unprocessable samples recorded.", + top->session->hists.stats.nr_unprocessable_samples++); + return; + } + if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) top->exact_samples++; diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 0d48613..48e5acd 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -32,6 +32,7 @@ struct events_stats { u32 nr_unknown_events; u32 nr_invalid_chains; u32 nr_unknown_id; + u32 nr_unprocessable_samples; }; enum hist_column { diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 552c1c5..9f833cf 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -796,6 +796,10 @@ static int perf_session_deliver_event(struct perf_session *session, ++session->hists.stats.nr_unknown_id; return -1; } + if (machine == NULL) { + ++session->hists.stats.nr_unprocessable_samples; + return -1; + } return tool->sample(tool, event, sample, evsel, machine); case PERF_RECORD_MMAP: return tool->mmap(tool, event, sample, machine); @@ -964,6 +968,12 @@ static void perf_session__warn_about_errors(const struct perf_session *session, session->hists.stats.nr_invalid_chains, session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); } + + if (session->hists.stats.nr_unprocessable_samples != 0) { + ui__warning("%u unprocessable samples recorded.\n" + "Do you have a KVM guest running and not using 'perf kvm'?\n", + session->hists.stats.nr_unprocessable_samples); + } } #define session_done() (*(volatile int *)(&session_done)) |