From aae4933da9488827d341c31b970b2f62ac45a496 Mon Sep 17 00:00:00 2001 From: Gu Zheng Date: Mon, 24 Nov 2014 11:05:24 +0800 Subject: md/bcache: 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 Acked-by: Kent Overstreet Signed-off-by: Jens Axboe --- drivers/md/bcache/request.c | 23 ++++++----------------- 1 file changed, 6 insertions(+), 17 deletions(-) (limited to 'drivers/md/bcache') diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 62e6e98..ab43fad 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -601,13 +601,8 @@ static void request_endio(struct bio *bio, int error) static void bio_complete(struct search *s) { if (s->orig_bio) { - int cpu, rw = bio_data_dir(s->orig_bio); - unsigned long duration = jiffies - s->start_time; - - cpu = part_stat_lock(); - part_round_stats(cpu, &s->d->disk->part0); - part_stat_add(cpu, &s->d->disk->part0, ticks[rw], duration); - part_stat_unlock(); + generic_end_io_acct(bio_data_dir(s->orig_bio), + &s->d->disk->part0, s->start_time); trace_bcache_request_end(s->d, s->orig_bio); bio_endio(s->orig_bio, s->iop.error); @@ -959,12 +954,9 @@ static void cached_dev_make_request(struct request_queue *q, struct bio *bio) struct search *s; struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; struct cached_dev *dc = container_of(d, struct cached_dev, disk); - int cpu, rw = bio_data_dir(bio); + int rw = bio_data_dir(bio); - cpu = part_stat_lock(); - part_stat_inc(cpu, &d->disk->part0, ios[rw]); - part_stat_add(cpu, &d->disk->part0, sectors[rw], bio_sectors(bio)); - part_stat_unlock(); + generic_start_io_acct(rw, bio_sectors(bio), &d->disk->part0); bio->bi_bdev = dc->bdev; bio->bi_iter.bi_sector += dc->sb.data_offset; @@ -1074,12 +1066,9 @@ static void flash_dev_make_request(struct request_queue *q, struct bio *bio) struct search *s; struct closure *cl; struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; - int cpu, rw = bio_data_dir(bio); + int rw = bio_data_dir(bio); - cpu = part_stat_lock(); - part_stat_inc(cpu, &d->disk->part0, ios[rw]); - part_stat_add(cpu, &d->disk->part0, sectors[rw], bio_sectors(bio)); - part_stat_unlock(); + generic_start_io_acct(rw, bio_sectors(bio), &d->disk->part0); s = search_alloc(bio, d); cl = &s->cl; -- cgit v1.1