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-rw-r--r--tools/perf/util/symbol.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 317c0706852f..a458aa8b87bb 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2018,6 +2018,9 @@ static int map__groups__sort_by_name_from_rbtree(struct maps *maps)
if (maps_by_name == NULL)
return -1;
+ up_read(&maps->lock);
+ down_write(&maps->lock);
+
maps->maps_by_name = maps_by_name;
maps->nr_maps_allocated = maps->nr_maps;
@@ -2025,6 +2028,10 @@ static int map__groups__sort_by_name_from_rbtree(struct maps *maps)
maps_by_name[i++] = map;
__maps__sort_by_name(maps);
+
+ up_write(&maps->lock);
+ down_read(&maps->lock);
+
return 0;
}