diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2018-11-06 15:45:14 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-17 14:57:36 -0300 |
| commit | d24e3c98ac11b941669885cc09d88b3b970e9d66 (patch) | |
| tree | b21fc9e0d45e4cb113eba4bbdddd5dc3b4685f1a /tools/perf/builtin-top.c | |
| parent | a4a6668a623e11f818a6abc9b5339855ee0407b1 (diff) | |
perf top: Save and display the lost count stats
Add a 'lost count' to 'perf top' headers:
# perf top --stdio
PerfTop: 3850 irqs/sec kernel:49.0% exact: 100.0% lost: 0/0 [4000Hz cycles:ppp], (all, 8 CPUs)
# perf top
Samples: 0 of event 'cycles:ppp', 4000 Hz, Event count (approx.): 0 lost: 0/0
The format is: <current period lost>/<total lost>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/n/tip-zo11rn270gij5jtp8fknpf8u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 1beb3e360521..c02ea537d5a7 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -800,6 +800,29 @@ static void perf_event__process_sample(struct perf_tool *tool, addr_location__put(&al); } +static void +perf_top__process_lost(struct perf_top *top, union perf_event *event, + struct perf_evsel *evsel) +{ + struct hists *hists = evsel__hists(evsel); + + top->lost += event->lost.lost; + top->lost_total += event->lost.lost; + hists->stats.total_lost += event->lost.lost; +} + +static void +perf_top__process_lost_samples(struct perf_top *top, + union perf_event *event, + struct perf_evsel *evsel) +{ + struct hists *hists = evsel__hists(evsel); + + top->lost += event->lost_samples.lost; + top->lost_total += event->lost_samples.lost; + hists->stats.total_lost_samples += event->lost_samples.lost; +} + static void perf_top__mmap_read_idx(struct perf_top *top, int idx) { struct record_opts *opts = &top->record_opts; @@ -865,6 +888,10 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx) if (event->header.type == PERF_RECORD_SAMPLE) { perf_event__process_sample(&top->tool, event, evsel, &sample, machine); + } else if (event->header.type == PERF_RECORD_LOST) { + perf_top__process_lost(top, event, evsel); + } else if (event->header.type == PERF_RECORD_LOST_SAMPLES) { + perf_top__process_lost_samples(top, event, evsel); } else if (event->header.type < PERF_RECORD_MAX) { hists__inc_nr_events(evsel__hists(evsel), event->header.type); machine__process_event(machine, event, &sample); |