diff options
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 7a871714d44e..d2fc7542e826 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -834,10 +834,16 @@ static void perf_session__mmap_read(struct perf_session *self) static void start_counters(struct perf_evlist *evlist) { - struct perf_evsel *counter; + struct perf_evsel *counter, *first; + + first = list_entry(evlist->entries.next, struct perf_evsel, node); list_for_each_entry(counter, &evlist->entries, node) { struct perf_event_attr *attr = &counter->attr; + struct xyarray *group_fd = NULL; + + if (group && counter != first) + group_fd = first->fd; attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; @@ -860,7 +866,8 @@ static void start_counters(struct perf_evlist *evlist) attr->inherit = inherit; try_again: if (perf_evsel__open(counter, top.evlist->cpus, - top.evlist->threads, group) < 0) { + top.evlist->threads, group, + group_fd) < 0) { int err = errno; if (err == EPERM || err == EACCES) { |