diff options
| -rw-r--r-- | tools/perf/util/evlist.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 7e23dae54f1..cfbe2b99b9a 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -816,7 +816,15 @@ static int perf_evlist__mmap_per_evsel(struct perf_evlist *evlist, int idx, perf_evlist__mmap_get(evlist, idx); } - if (__perf_evlist__add_pollfd(evlist, fd, idx) < 0) { + /* + * The system_wide flag causes a selected event to be opened + * always without a pid. Consequently it will never get a + * POLLHUP, but it is used for tracking in combination with + * other events, so it should not need to be polled anyway. + * Therefore don't add it for polling. + */ + if (!evsel->system_wide && + __perf_evlist__add_pollfd(evlist, fd, idx) < 0) { perf_evlist__mmap_put(evlist, idx); return -1; } |