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block/rsxx: use generic io stats accounting functions to simplify io stat accounting

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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>
This commit is contained in:
Gu Zheng 2014-11-24 11:05:27 +08:00 committed by Jens Axboe
parent 18c0b223cf
commit fa573f7279
1 changed files with 4 additions and 25 deletions
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29
drivers/block/rsxx/dev.c
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@ -112,37 +112,16 @@ static const struct block_device_operations rsxx_fops = {
static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio) static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio)
{ {
struct hd_struct *part0 = &card->gendisk->part0; generic_start_io_acct(bio_data_dir(bio), bio_sectors(bio),
int rw = bio_data_dir(bio); &card->gendisk->part0);
int cpu;
cpu = part_stat_lock();
part_round_stats(cpu, part0);
part_inc_in_flight(part0, rw);
part_stat_unlock();
} }
static void disk_stats_complete(struct rsxx_cardinfo *card, static void disk_stats_complete(struct rsxx_cardinfo *card,
struct bio *bio, struct bio *bio,
unsigned long start_time) unsigned long start_time)
{ {
struct hd_struct *part0 = &card->gendisk->part0; generic_end_io_acct(bio_data_dir(bio), &card->gendisk->part0,
unsigned long duration = jiffies - start_time; start_time);
int rw = bio_data_dir(bio);
int cpu;
cpu = part_stat_lock();
part_stat_add(cpu, part0, sectors[rw], bio_sectors(bio));
part_stat_inc(cpu, part0, ios[rw]);
part_stat_add(cpu, part0, ticks[rw], duration);
part_round_stats(cpu, part0);
part_dec_in_flight(part0, rw);
part_stat_unlock();
} }
static void bio_dma_done_cb(struct rsxx_cardinfo *card, static void bio_dma_done_cb(struct rsxx_cardinfo *card,