Break the kabi

Author: bmastbergen

include/linux/perf_event.h

@@ -690,6 +690,7 @@ struct perf_event {
 	int				event_caps;
 	/* The cumulative AND of all event_caps for events in this group. */
 	int				group_caps;
+	unsigned int			group_generation;
 
 	struct perf_event		*group_leader;
 	struct pmu			*pmu;