diff options
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 42ea4e947eb8..0d3b73996255 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -302,6 +302,17 @@ static int perf_evlist__id_add_fd(struct perf_evlist *evlist, { u64 read_data[4] = { 0, }; int id_idx = 1; /* The first entry is the counter value */ + u64 id; + int ret; + + ret = ioctl(fd, PERF_EVENT_IOC_ID, &id); + if (!ret) + goto add; + + if (errno != ENOTTY) + return -1; + + /* Legacy way to get event id.. All hail to old kernels! */ if (!(evsel->attr.read_format & PERF_FORMAT_ID) || read(fd, &read_data, sizeof(read_data)) == -1) @@ -312,7 +323,10 @@ static int perf_evlist__id_add_fd(struct perf_evlist *evlist, if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) ++id_idx; - perf_evlist__id_add(evlist, evsel, cpu, thread, read_data[id_idx]); + id = read_data[id_idx]; + + add: + perf_evlist__id_add(evlist, evsel, cpu, thread, id); return 0; } |