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| author | Mike Krinkin <krinkin.m.u@gmail.com> | 2015-12-03 17:32:30 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-12-03 10:18:44 -0700 |
| commit | cda22646adaa453519fac28222f20b0d73aa8562 (patch) | |
| tree | ca17d1f83e01c6622bdf92634401d263640ab926 /block | |
| parent | bffed457160ab48282ca6d0d58646b3bbc2fa554 (diff) | |
| download | linux-cda22646adaa453519fac28222f20b0d73aa8562.tar.bz2 | |
block: add call to split trace point
There is a split tracepoint that is supposed to be called when
bio is splitted, and it was called in bio_split function until
commit 4b1faf931650d4a35b2a ("block: Kill bio_pair_split()").
But now, no one reports splits, so this patch adds call to
trace_block_split back in blk_queue_split right after split.
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-merge.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 41a55ba0d78e..0e5643a5d1c3 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -7,6 +7,8 @@ #include <linux/blkdev.h> #include <linux/scatterlist.h> +#include <trace/events/block.h> + #include "blk.h" static struct bio *blk_bio_discard_split(struct request_queue *q, @@ -159,6 +161,7 @@ void blk_queue_split(struct request_queue *q, struct bio **bio, split->bi_rw |= REQ_NOMERGE; bio_chain(split, *bio); + trace_block_split(q, split, (*bio)->bi_iter.bi_sector); generic_make_request(*bio); *bio = split; } |