wait_on_pipe     5993 kernel/trace/trace.c 		ret = wait_on_pipe(iter, 0);
wait_on_pipe     7300 kernel/trace/trace.c 			ret = wait_on_pipe(iter, 0);
wait_on_pipe     7500 kernel/trace/trace.c 		ret = wait_on_pipe(iter, iter->tr->buffer_percent);