From 20419d3a5bc0a278ed7e2ee54943674004411933 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 28 Oct 2019 11:50:12 -0300 Subject: [PATCH] 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 Cc: Andi Kleen Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-pbde2ucn49khnrebclys9pny@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/map.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index c9ba49566981..86d8d187f872 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -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) -- 2.11.0