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| author | Jens Axboe <axboe@suse.de> | 2006-03-23 20:00:26 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-03-23 20:00:26 +0100 |
| commit | 2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4 (patch) | |
| tree | d4fe59a7ca0c110690937085548936a4535c39db /fs/bio.c | |
| parent | 6dac40a7ce2483a47b54af07afebeb84131c7228 (diff) | |
| download | lwn-2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4.tar.gz lwn-2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4.zip | |
[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'fs/bio.c')
| -rw-r--r-- | fs/bio.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -25,6 +25,7 @@ #include <linux/module.h> #include <linux/mempool.h> #include <linux/workqueue.h> +#include <linux/blktrace_api.h> #include <scsi/sg.h> /* for struct sg_iovec */ #define BIO_POOL_SIZE 256 @@ -1095,6 +1096,9 @@ struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors) if (!bp) return bp; + blk_add_trace_pdu_int(bdev_get_queue(bi->bi_bdev), BLK_TA_SPLIT, bi, + bi->bi_sector + first_sectors); + BUG_ON(bi->bi_vcnt != 1); BUG_ON(bi->bi_idx != 0); atomic_set(&bp->cnt, 3); |