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perf callchain: Make callchain cursors TLS

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perf top -G has a race on callchain cursor between main thread and
display thread. Since the callchain cursors are used locally make them
thread-local data would solve the problem.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Reported-by: Sunjin Yang <fan4326@gmail.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sunjin Yang <fan4326@gmail.com>
Link: http://lkml.kernel.org/r/1338443007-24857-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2012-05-31 14:43:26 +09:00
committed by Arnaldo Carvalho de Melo
parent ea1b3ebac9
commit 472606458f
7 changed files with 17 additions and 14 deletions
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2
tools/perf/builtin-top.c
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@@ -787,7 +787,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
}
if (symbol_conf.use_callchain) {
err = callchain_append(he->callchain, &evsel->hists.callchain_cursor,
err = callchain_append(he->callchain, &callchain_cursor,
sample->period);
if (err)
return;