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authorJens Axboe <axboe@suse.de>2006-03-23 20:00:26 +0100
committerJens Axboe <axboe@suse.de>2006-03-23 20:00:26 +0100
commit2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4 (patch)
treed4fe59a7ca0c110690937085548936a4535c39db /block/elevator.c
parent6dac40a7ce2483a47b54af07afebeb84131c7228 (diff)
downloadlinux-2.6.34-ux500-2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4.tar.gz
[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'block/elevator.c')
-rw-r--r--block/elevator.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/elevator.c b/block/elevator.c
index db3d0d8296a..5e558c4689a 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -33,6 +33,7 @@
#include <linux/init.h>
#include <linux/compiler.h>
#include <linux/delay.h>
+#include <linux/blktrace_api.h>
#include <asm/uaccess.h>
@@ -333,6 +334,8 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
struct list_head *pos;
unsigned ordseq;
+ blk_add_trace_rq(q, rq, BLK_TA_INSERT);
+
rq->q = q;
switch (where) {
@@ -499,6 +502,7 @@ struct request *elv_next_request(request_queue_t *q)
* not be passed by new incoming requests
*/
rq->flags |= REQ_STARTED;
+ blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
}
if (!q->boundary_rq || q->boundary_rq == rq) {