2280 	struct ring_buffer_iter *buf_iter = trace_buffer_iter(iter, iter->cpu);  in trace_iterator_increment()  local
2283 	if (buf_iter)  in trace_iterator_increment()
2284 		ring_buffer_read(buf_iter, NULL);  in trace_iterator_increment()
2292 	struct ring_buffer_iter *buf_iter = trace_buffer_iter(iter, cpu);  in peek_next_entry()  local
2294 	if (buf_iter)  in peek_next_entry()
2295 		event = ring_buffer_iter_peek(buf_iter, ts);  in peek_next_entry()
2423 	struct ring_buffer_iter *buf_iter;  in tracing_iter_reset()  local
2429 	buf_iter = trace_buffer_iter(iter, cpu);  in tracing_iter_reset()
2430 	if (!buf_iter)  in tracing_iter_reset()
2433 	ring_buffer_iter_reset(buf_iter);  in tracing_iter_reset()
2440 	while ((event = ring_buffer_iter_peek(buf_iter, &ts))) {  in tracing_iter_reset()
2444 		ring_buffer_read(buf_iter, NULL);  in tracing_iter_reset()
2794 	struct ring_buffer_iter *buf_iter;  in trace_empty()  local
2800 		buf_iter = trace_buffer_iter(iter, cpu);  in trace_empty()
2801 		if (buf_iter) {  in trace_empty()
2802 			if (!ring_buffer_iter_empty(buf_iter))  in trace_empty()
2812 		buf_iter = trace_buffer_iter(iter, cpu);  in trace_empty()
2813 		if (buf_iter) {  in trace_empty()
2814 			if (!ring_buffer_iter_empty(buf_iter))  in trace_empty()