[PATCH RFC v4 09/13] perf metricgroup: Hack a fix for aliases when covering multiple PMUs

[John Garry]

Function find_evsel_group() seems broken for aliases covering multiple
PMUs, as dicussed at:

https://lore.kernel.org/lkml/CAP-5=fUy6FOszNRwJF6ZNpqQSSyrnLPV6GbkEcZMqAhUp3X0ZA@xxxxxxxxxxxxxx/

For now, hack a fix which I only know works for me.

Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
---
 tools/perf/util/metricgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index d948a7f910cf..82ba3638f48c 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -213,7 +213,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
 		/* Ignore event if already used and merging is disabled. */
 		if (metric_no_merge && test_bit(ev->idx, evlist_used))
 			continue;
-		if (!has_constraint && ev->leader != current_leader) {
+		if (!has_constraint && (!current_leader || strcmp(current_leader->name, ev->leader->name))) {
 			/*
 			 * Start of a new group, discard the whole match and
 			 * start again.
@@ -279,7 +279,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
 			 * when then group is left.
 			 */
 			if (!has_constraint &&
-			    ev->leader != metric_events[i]->leader)
+			    strcmp(ev->leader->name, metric_events[i]->leader->name))
 				break;
 			if (!strcmp(metric_events[i]->name, ev->name)) {
 				set_bit(ev->idx, evlist_used);
-- 
2.26.2