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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2014-11-24 11:05:26 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-11-24 08:05:16 -0700 |
| commit | 18c0b223cf9901727ef3b02da6711ac930b4e5d4 (patch) | |
| tree | 4f1b835c2a1c97dbdfcadc69147e1178d60e6ca8 /drivers/md/dm.c | |
| parent | 244808543e6e9b46ea1135589877f4d4bd2925c5 (diff) | |
| download | blackbird-op-linux-18c0b223cf9901727ef3b02da6711ac930b4e5d4.tar.gz blackbird-op-linux-18c0b223cf9901727ef3b02da6711ac930b4e5d4.zip | |
md: use generic io stats accounting functions to simplify io stat accounting
Use generic io stats accounting help functions (generic_{start,end}_io_acct)
to simplify io stat accounting.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 58f3927fd7cc..b1cdf69b11e7 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -602,13 +602,10 @@ static void end_io_acct(struct dm_io *io) struct mapped_device *md = io->md; struct bio *bio = io->bio; unsigned long duration = jiffies - io->start_time; - int pending, cpu; + int pending; int rw = bio_data_dir(bio); - cpu = part_stat_lock(); - part_round_stats(cpu, &dm_disk(md)->part0); - part_stat_add(cpu, &dm_disk(md)->part0, ticks[rw], duration); - part_stat_unlock(); + generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time); if (unlikely(dm_stats_used(&md->stats))) dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector, @@ -1648,16 +1645,12 @@ static void _dm_request(struct request_queue *q, struct bio *bio) { int rw = bio_data_dir(bio); struct mapped_device *md = q->queuedata; - int cpu; int srcu_idx; struct dm_table *map; map = dm_get_live_table(md, &srcu_idx); - cpu = part_stat_lock(); - part_stat_inc(cpu, &dm_disk(md)->part0, ios[rw]); - part_stat_add(cpu, &dm_disk(md)->part0, sectors[rw], bio_sectors(bio)); - part_stat_unlock(); + generic_start_io_acct(rw, bio_sectors(bio), &dm_disk(md)->part0); /* if we're suspended, we have to queue this io for later */ if (unlikely(test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags))) { |
