Commit 20419d3a authored Oct 28, 2019 by Arnaldo Carvalho de Melo

perf map: Allow map__next() to receive a NULL arg

Just like free(), return NULL in that case, will simplify the
for_each_entry_safe() iterators.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-pbde2ucn49khnrebclys9pny@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent ee2555b6

tools/perf/util/map.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -1007,7 +1007,7 @@ struct map maps__first(struct maps maps)
		return NULL;
		}

		struct map map__next(struct map map)
		static struct map __map__next(struct map map)
		{
		struct rb_node *next = rb_next(&map->rb_node);

		@@ -1016,6 +1016,11 @@ struct map map__next(struct map map)
		return NULL;
		}

		struct map map__next(struct map map)
		{
		return map ? __map__next(map) : NULL;
		}

		struct kmap __map__kmap(struct map map)
		{
		if (!map->dso \|\| !map->dso->kernel)

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