diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f5c5a3fa2c8101cc37ea917d29dec30713ec0699..a9d8cab18b00ffe1cd91b71104c82ed6422392d9 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -468,6 +468,7 @@ struct perf_event {
 	int				group_flags;
 	struct perf_event		*group_leader;
 	struct pmu			*pmu;
+	void				*pmu_private;
 
 	enum perf_event_active_state	state;
 	unsigned int			attach_state;