Commit cda22646 authored by Mike Krinkin's avatar Mike Krinkin Committed by Jens Axboe

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 4b1faf93 ("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: default avatarMike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent bffed457
...@@ -7,6 +7,8 @@ ...@@ -7,6 +7,8 @@
#include <linux/blkdev.h> #include <linux/blkdev.h>
#include <linux/scatterlist.h> #include <linux/scatterlist.h>
#include <trace/events/block.h>
#include "blk.h" #include "blk.h"
static struct bio *blk_bio_discard_split(struct request_queue *q, 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, ...@@ -159,6 +161,7 @@ void blk_queue_split(struct request_queue *q, struct bio **bio,
split->bi_rw |= REQ_NOMERGE; split->bi_rw |= REQ_NOMERGE;
bio_chain(split, *bio); bio_chain(split, *bio);
trace_block_split(q, split, (*bio)->bi_iter.bi_sector);
generic_make_request(*bio); generic_make_request(*bio);
*bio = split; *bio = split;
} }
......
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