4078 				 struct perf_event *output_event);
4117 			struct perf_event *output_event;  in _perf_ioctl()  local
4122 			output_event = output.file->private_data;  in _perf_ioctl()
4123 			ret = perf_event_set_output(event, output_event);  in _perf_ioctl()
7797 perf_event_set_output(struct perf_event *event, struct perf_event *output_event)  in perf_event_set_output()  argument
7802 	if (!output_event)  in perf_event_set_output()
7806 	if (event == output_event)  in perf_event_set_output()
7812 	if (output_event->cpu != event->cpu)  in perf_event_set_output()
7818 	if (output_event->cpu == -1 && output_event->ctx != event->ctx)  in perf_event_set_output()
7824 	if (output_event->clock != event->clock)  in perf_event_set_output()
7830 	if (has_aux(event) && has_aux(output_event) &&  in perf_event_set_output()
7831 	    event->pmu != output_event->pmu)  in perf_event_set_output()
7840 	if (output_event) {  in perf_event_set_output()
7842 		rb = ring_buffer_get(output_event);  in perf_event_set_output()
7915 	struct perf_event *group_leader = NULL, *output_event = NULL;  in SYSCALL_DEFINE5()  local
7972 			output_event = group_leader;  in SYSCALL_DEFINE5()
8112 	if (output_event) {  in SYSCALL_DEFINE5()
8113 		err = perf_event_set_output(event, output_event);  in SYSCALL_DEFINE5()