8190 	READ_ONCE(event->overflow_handler)(event, data, regs);  in __perf_event_overflow()
8994 	event->orig_overflow_handler = READ_ONCE(event->overflow_handler);  in perf_event_set_bpf_handler()
8995 	WRITE_ONCE(event->overflow_handler, bpf_overflow_handler);  in perf_event_set_bpf_handler()
9006 	WRITE_ONCE(event->overflow_handler, event->orig_overflow_handler);  in perf_event_free_bpf_handler()
10403 		 perf_overflow_handler_t overflow_handler,  in perf_event_alloc()  argument
10475 	if (!overflow_handler && parent_event) {  in perf_event_alloc()
10476 		overflow_handler = parent_event->overflow_handler;  in perf_event_alloc()
10479 		if (overflow_handler == bpf_overflow_handler) {  in perf_event_alloc()
10493 	if (overflow_handler) {  in perf_event_alloc()
10494 		event->overflow_handler	= overflow_handler;  in perf_event_alloc()
10497 		event->overflow_handler = perf_event_output_backward;  in perf_event_alloc()
10500 		event->overflow_handler = perf_event_output_forward;  in perf_event_alloc()
11327 				 perf_overflow_handler_t overflow_handler,  in perf_event_create_kernel_counter()  argument
11342 				 overflow_handler, context, -1);  in perf_event_create_kernel_counter()
11847 	child_event->overflow_handler = parent_event->overflow_handler;  in inherit_event()