lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

blktrace: port to tracepoints

Browse Source 
This was a forward port of work done by Mathieu Desnoyers, I changed it to
encode the 'what' parameter on the tracepoint name, so that one can register
interest in specific events and not on classes of events to then check the
'what' parameter.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
2008-10-30 08:34:33 +01:00
committed by Ingo Molnar
parent 509dceef64
commit 5f3ea37c77
9 changed files with 418 additions and 199 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/bio.c
View File

@ -26,6 +26,7 @@
#include <linux/mempool.h>
#include <linux/workqueue.h>
#include <linux/blktrace_api.h>
#include <trace/block.h>
#include <scsi/sg.h> /* for struct sg_iovec */
static struct kmem_cache *bio_slab __read_mostly;
@ -1263,7 +1264,7 @@ struct bio_pair *bio_split(struct bio *bi, int first_sectors)
if (!bp)
return bp;
blk_add_trace_pdu_int(bdev_get_queue(bi->bi_bdev), BLK_TA_SPLIT, bi,
trace_block_split(bdev_get_queue(bi->bi_bdev), bi,
bi->bi_sector + first_sectors);
BUG_ON(bi->bi_vcnt != 1);