diff options
| -rw-r--r-- | tools/perf/util/evlist.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/evsel.c | 23 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 1 |
3 files changed, 19 insertions, 7 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index be440df29615..e88e6f9b1463 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -358,7 +358,7 @@ void perf_evlist__disable(struct perf_evlist *evlist) struct perf_evsel *pos; evlist__for_each_entry(evlist, pos) { - if (!perf_evsel__is_group_leader(pos) || !pos->fd) + if (pos->disabled || !perf_evsel__is_group_leader(pos) || !pos->fd) continue; perf_evsel__disable(pos); } diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 7e95ec1c19a8..6d187059a373 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1207,16 +1207,27 @@ int perf_evsel__append_addr_filter(struct perf_evsel *evsel, const char *filter) int perf_evsel__enable(struct perf_evsel *evsel) { - return perf_evsel__run_ioctl(evsel, - PERF_EVENT_IOC_ENABLE, - 0); + int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, 0); + + if (!err) + evsel->disabled = false; + + return err; } int perf_evsel__disable(struct perf_evsel *evsel) { - return perf_evsel__run_ioctl(evsel, - PERF_EVENT_IOC_DISABLE, - 0); + int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_DISABLE, 0); + /* + * We mark it disabled here so that tools that disable a event can + * ignore events after they disable it. I.e. the ring buffer may have + * already a few more events queued up before the kernel got the stop + * request. + */ + if (!err) + evsel->disabled = true; + + return err; } int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index ad5d615c6db6..4ef50f157b50 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -122,6 +122,7 @@ struct perf_evsel { bool snapshot; bool supported; bool needs_swap; + bool disabled; bool no_aux_samples; bool immediate; bool system_wide; |