On Tue, Jan 19, 2021 at 05:33:13PM +0000, John Garry wrote:
SNIP
Please try this:
From 2380f1ef0250e6818b3dbc7bff4a868810875e2a Mon Sep 17 00:00:00 2001 From: John Garry john.garry@huawei.com Date: Tue, 19 Jan 2021 17:29:54 +0000 Subject: [PATCH] perf metricgroup: Fix metric support for duration_time
For a metric using duration_time, the strcmp() check when finding identical events in metric_events[] is broken, as it does not consider that the event pmu_name is NULL - it would be for duration_time.
As such, add a NULL check here for event pmu_name.
Signed-off-by: John Garry john.garry@huawei.com
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index ee94d3e8dd65..277adff8017f 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -280,6 +280,8 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist, */ if (!has_constraint && ev->leader != metric_events[i]->leader &&
ev->leader->pmu_name &&metric_events[i]->leader->pmu_name && !strcmp(ev->leader->pmu_name, metric_events[i]->leader->pmu_name)) break;-- 2.26.2
that's fixing the issue for me, this was crashing: # perf stat -a -I 1000 -M L1D_Cache_Fill_BW,L2_Cache_Fill_BW
could you please send it formaly, so it can be merged?
I can't reproduce the original patch issue and I need to check the code in more depth
thanks, jirka