Added in elevator switch message to blktrace stream

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
git-mirror · May 28, 2008 · 4722dc5 · 4722dc5
1 parent 9d5f09a
commit 4722dc5
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/block/elevator.c b/block/elevator.c
@@ -1110,6 +1110,8 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
 	queue_flag_clear(QUEUE_FLAG_ELVSWITCH, q);
 	spin_unlock_irq(q->queue_lock);
 
+	blk_add_trace_msg(q, "elv switch: %s", e->elevator_type->elevator_name);
+
 	return 1;
 
 fail_register: