From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 29/63] perf map: Allow map__next() to receive a NULL arg Date: Thu, 7 Nov 2019 15:59:37 -0300 Message-ID: <20191107190011.23924-30-acme@kernel.org> References: <20191107190011.23924-1-acme@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20191107190011.23924-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Andi Kleen List-Id: linux-perf-users.vger.kernel.org From: Arnaldo Carvalho de Melo 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) -- 2.21.0