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Commit fa573f72 authored by Gu Zheng's avatar Gu Zheng Committed by Jens Axboe
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block/rsxx: 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: default avatarGu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 18c0b223

drivers/block/rsxx/dev.c

+4 −25
Original line number Diff line number Diff line
@@ -112,37 +112,16 @@ static const struct block_device_operations rsxx_fops = { 


static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio)

{

	struct hd_struct *part0 = &card->gendisk->part0;

	int rw = bio_data_dir(bio);

	int cpu;



	cpu = part_stat_lock();



	part_round_stats(cpu, part0);

	part_inc_in_flight(part0, rw);



	part_stat_unlock();

	generic_start_io_acct(bio_data_dir(bio), bio_sectors(bio),

			     &card->gendisk->part0);

}



static void disk_stats_complete(struct rsxx_cardinfo *card,

				struct bio *bio,

				unsigned long start_time)

{

	struct hd_struct *part0 = &card->gendisk->part0;

	unsigned long duration = jiffies - 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();

	generic_end_io_acct(bio_data_dir(bio), &card->gendisk->part0,

			   start_time);

}



static void bio_dma_done_cb(struct rsxx_cardinfo *card,