48 	unsigned long head;  in perf_output_put_handle()  local
51 	head = local_read(&rb->head);  in perf_output_put_handle()
87 	rb->user_page->data_head = head;  in perf_output_put_handle()
93 	if (unlikely(head != local_read(&rb->head))) {  in perf_output_put_handle()
109 	unsigned long tail, offset, head;  in perf_output_begin()  local
145 		offset = head = local_read(&rb->head);  in perf_output_begin()
147 		    unlikely(CIRC_SPACE(head, tail, perf_data_size(rb)) < size))  in perf_output_begin()
162 		head += size;  in perf_output_begin()
163 	} while (local_cmpxchg(&rb->head, offset, head) != offset);  in perf_output_begin()
170 	if (unlikely(head - local_read(&rb->wakeup) > rb->watermark))  in perf_output_begin()
301 	handle->head = aux_head;  in perf_aux_output_begin()
361 		aux_head = handle->head;  in perf_aux_output_end()
418 	handle->head = aux_head;  in perf_aux_output_skip()