perf/cgroup: Add __percpu annotation to perf_cgroup->info

It's a per-cpu data structure but missed the __percpu annotation.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Link: http://lkml.kernel.org/r/1363600594-11453-1-git-send-email-namhyung@kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

kernel/events/core.c

@@ -245,7 +245,7 @@ struct perf_cgroup_info {
 
 struct perf_cgroup {
 	struct cgroup_subsys_state	css;
-	struct perf_cgroup_info		*info;
+	struct perf_cgroup_info	__percpu *info;
 };
 
 /*