diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2018-11-11 20:02:46 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-17 14:58:33 -0300 |
| commit | 97f7e0b33db81fd821828390e9095771abe62816 (patch) | |
| tree | c6fbeacb43c62c496da5d090ddf1f6b4f24786ea /tools/perf/builtin-top.c | |
| parent | d63b9f6fea7613e2fdc8a5ef7e17ecc9cf24bf9d (diff) | |
perf top: Save and display the drop count stats
Add drop count to 'perf top' headers:
# perf top --stdio
PerfTop: 3549 irqs/sec kernel:51.8% exact: 100.0% lost: 0/0 drop: 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 drop: 0/0
The format is: <current period drop>/<total drop>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-2lj87zz8tq9ye1ntax3ulw0n@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 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 234232d538c2..9166f6087e3f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1112,8 +1112,11 @@ static int deliver_event(struct ordered_events *qe, struct machine *machine; int ret = -1; - if (should_drop(qevent, top)) + if (should_drop(qevent, top)) { + top->drop++; + top->drop_total++; return 0; + } ret = perf_evlist__parse_sample(evlist, event, &sample); if (ret) { |