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Date: Thu, 26 Nov 2015 17:46:00 -0300 From: Arnaldo Carvalho de Melo <acme@...nel.org> To: Ingo Molnar <mingo@...nel.org> Cc: linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>, Andi Kleen <andi@...stfloor.org>, David Ahern <dsahern@...il.com>, Frederic Weisbecker <fweisbec@...il.com>, Jiri Olsa <jolsa@...hat.com>, Kan Liang <kan.liang@...el.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Wang Nan <wangnan0@...wei.com>, Arnaldo Carvalho de Melo <acme@...hat.com> Subject: [PATCH 02/13] perf top: Fix freeze on --call-graph flat/folded From: Namhyung Kim <namhyung@...nel.org> The callchain rbtree is rebuilt periodically, so it needs to reinitialize the root everytime. Otherwise it can be stuck in the rbtree insertion with stale pointers. Signed-off-by: Namhyung Kim <namhyung@...nel.org> Cc: Andi Kleen <andi@...stfloor.org> Cc: David Ahern <dsahern@...il.com> Cc: Frederic Weisbecker <fweisbec@...il.com> Cc: Jiri Olsa <jolsa@...hat.com> Cc: Kan Liang <kan.liang@...el.com> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: Wang Nan <wangnan0@...wei.com> Link: http://lkml.kernel.org/r/1448521700-32062-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> --- tools/perf/util/callchain.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index fc3b1e0d09ee..564377d2bebf 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -290,6 +290,7 @@ static void sort_chain_flat(struct rb_root *rb_root, struct callchain_root *root, u64 min_hit, struct callchain_param *param __maybe_unused) { + *rb_root = RB_ROOT; __sort_chain_flat(rb_root, &root->node, min_hit); } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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