diff options
Diffstat (limited to 'tools/perf/tests')
| -rw-r--r-- | tools/perf/tests/event_groups.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/tools/perf/tests/event_groups.c b/tools/perf/tests/event_groups.c index 612c0444aaa8..029442b4e9c6 100644 --- a/tools/perf/tests/event_groups.c +++ b/tools/perf/tests/event_groups.c @@ -51,7 +51,7 @@ static int event_open(int type, unsigned long config, int group_fd) static int setup_uncore_event(void) { struct perf_pmu *pmu; - int i; + int i, fd; if (list_empty(&pmus)) perf_pmu__scan(NULL); @@ -62,6 +62,18 @@ static int setup_uncore_event(void) pr_debug("Using %s for uncore pmu event\n", pmu->name); types[2] = pmu->type; configs[2] = uncore_pmus[i].config; + /* + * Check if the chosen uncore pmu event can be + * used in the test. For example, incase of accessing + * hv_24x7 pmu counters, partition should have + * additional permissions. If not, event open will + * fail. So check if the event open succeeds + * before proceeding. + */ + fd = event_open(types[2], configs[2], -1); + if (fd < 0) + return -1; + close(fd); return 0; } } |