perf tools: Rename maps__next

[mirror_ubuntu-artful-kernel.git] / tools / perf / util / map.c

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index a14f08f416863944527412b82a6b3cfaeda3c603..09a62731e035e66c35897dbea29c5450228c3f2f 100644 (file)
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -292,6 +292,11 @@ int map__load(struct map *map, symbol_filter_t filter)
        return 0;
 }
 
+int __weak arch__compare_symbol_names(const char *namea, const char *nameb)
+{
+       return strcmp(namea, nameb);
+}
+
 struct symbol *map__find_symbol(struct map *map, u64 addr,
                                symbol_filter_t filter)
 {
@@ -421,7 +426,7 @@ void map_groups__init(struct map_groups *mg, struct machine *machine)
                INIT_LIST_HEAD(&mg->removed_maps[i]);
        }
        mg->machine = machine;
-       mg->refcnt = 1;
+       atomic_set(&mg->refcnt, 1);
 }
 
 static void maps__delete(struct rb_root *maps)
@@ -489,7 +494,7 @@ void map_groups__delete(struct map_groups *mg)
 
 void map_groups__put(struct map_groups *mg)
 {
-       if (--mg->refcnt == 0)
+       if (mg && atomic_dec_and_test(&mg->refcnt))
                map_groups__delete(mg);
 }
 
@@ -770,7 +775,7 @@ struct map *maps__first(struct rb_root *maps)
        return NULL;
 }
 
-struct map *maps__next(struct map *map)
+struct map *map__next(struct map *map)
 {
        struct rb_node *next = rb_next(&map->rb_node);