perf hists: Move locking to its call-sites
It's a preparation patch to eliminate unneeded locking in the perf
report path.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1368497347-9628-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5cd41ec..c2c9734 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -245,8 +245,11 @@
{
struct hist_entry *he;
+ pthread_mutex_lock(&evsel->hists.lock);
he = __hists__add_entry(&evsel->hists, al, NULL, sample->period,
sample->weight);
+ pthread_mutex_unlock(&evsel->hists.lock);
+
if (he == NULL)
return NULL;