Rather than wildcard matching the cycles event specify only the core
PMUs. This avoids potentially loading unnecessary uncore PMUs.
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/util/evlist.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 80d8387e6b97..e8217efdda53 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -101,16 +101,24 @@ struct evlist *evlist__new_default(void)
{
struct evlist *evlist = evlist__new();
bool can_profile_kernel;
- int err;
+ struct perf_pmu *pmu = NULL;
if (!evlist)
return NULL;
can_profile_kernel = perf_event_paranoid_check(1);
- err = parse_event(evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
- if (err) {
- evlist__delete(evlist);
- return NULL;
+
+ while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
+ char buf[256];
+ int err;
+
+ snprintf(buf, sizeof(buf), "%s/cycles/%s", pmu->name,
+ can_profile_kernel ? "P" : "Pu");
+ err = parse_event(evlist, buf);
+ if (err) {
+ evlist__delete(evlist);
+ return NULL;
+ }
}
if (evlist->core.nr_entries > 1) {
--
2.51.0.384.g4c02a37b29-goog
