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authorNamhyung Kim <namhyung.kim@lge.com>2012-05-31 14:43:26 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-05-31 10:47:12 -0300
commit472606458f3e1ced5fe3cc5f04e90a6b5a4732cf (patch)
treea4110008697cc1e80d0c2a47cf9871e3cf32b299 /tools/perf/builtin-top.c
parentea1b3ebac9a1c72c4362c784b4ed069a938a4ddb (diff)
downloadlwn-472606458f3e1ced5fe3cc5f04e90a6b5a4732cf.tar.gz
lwn-472606458f3e1ced5fe3cc5f04e90a6b5a4732cf.zip
perf callchain: Make callchain cursors TLS
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>
Diffstat (limited to 'tools/perf/builtin-top.c')
-rw-r--r--tools/perf/builtin-top.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 871b540293e1..6bb0277b7dfe 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -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;