static void drive_stat_acct(struct request *rq, int new_io) { struct hd_struct *part; int rw = rq_data_dir(rq); int cpu; if (!blk_do_io_stat(rq)) return; cpu = part_stat_lock(); if (!new_io) { part = rq->part; part_stat_inc(cpu, part, merges[rw]); } else { part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq)); if (!hd_struct_try_get(part)) { part = &rq->rq_disk->part0; hd_struct_get(part); } part_round_stats(cpu, part); part_inc_in_flight(part, rw); rq->part = part; } part_stat_unlock(); }
/* Update disk stats at start of I/O request */ static void _drbd_start_io_acct(struct drbd_conf *mdev, struct drbd_request *req, struct bio *bio) { const int rw = bio_data_dir(bio); int cpu; cpu = part_stat_lock(); part_stat_inc(cpu, &mdev->vdisk->part0, ios[rw]); part_stat_add(cpu, &mdev->vdisk->part0, sectors[rw], bio_sectors(bio)); part_inc_in_flight(&mdev->vdisk->part0, rw); part_stat_unlock(); }
/* Update disk stats at start of I/O request */ static void _drbd_start_io_acct(struct drbd_conf *mdev, struct drbd_request *req) { const int rw = bio_data_dir(req->master_bio); int cpu; cpu = part_stat_lock(); part_round_stats(cpu, &mdev->vdisk->part0); part_stat_inc(cpu, &mdev->vdisk->part0, ios[rw]); part_stat_add(cpu, &mdev->vdisk->part0, sectors[rw], req->i.size >> 9); (void) cpu; /* The macro invocations above want the cpu argument, I do not like the compiler warning about cpu only assigned but never used... */ part_inc_in_flight(&mdev->vdisk->part0, rw); part_stat_unlock(); }
void __nd_iostat_start(struct bio *bio, unsigned long *start) { struct gendisk *disk = bio->bi_bdev->bd_disk; const int rw = bio_data_dir(bio); int cpu = part_stat_lock(); *start = jiffies; part_round_stats(cpu, &disk->part0); part_stat_inc(cpu, &disk->part0, ios[rw]); part_stat_add(cpu, &disk->part0, sectors[rw], bio_sectors(bio)); part_inc_in_flight(&disk->part0, rw); part_stat_unlock(); }
/* Update disk stats at start of I/O request */ static void _drbd_start_io_acct(struct drbd_conf *mdev, struct drbd_request *req, struct bio *bio) { const int rw = bio_data_dir(bio); #ifndef __disk_stat_inc int cpu; #endif #ifdef __disk_stat_inc __disk_stat_inc(mdev->vdisk, ios[rw]); __disk_stat_add(mdev->vdisk, sectors[rw], bio_sectors(bio)); disk_round_stats(mdev->vdisk); mdev->vdisk->in_flight++; #else cpu = part_stat_lock(); part_stat_inc(cpu, &mdev->vdisk->part0, ios[rw]); part_stat_add(cpu, &mdev->vdisk->part0, sectors[rw], bio_sectors(bio)); part_inc_in_flight(&mdev->vdisk->part0, rw); part_stat_unlock(); #endif }