No functional change in this patch, just in preparation for basing the inflight mechanism on the queue in question. Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> --- block/bio.c | 16 ++++++++-------- block/blk-core.c | 22 ++++++++++++---------- block/blk-merge.c | 4 ++-- block/genhd.c | 4 ++-- block/partition-generic.c | 5 +++-- drivers/block/drbd/drbd_req.c | 10 +++++++--- drivers/block/rsxx/dev.c | 6 +++--- drivers/block/zram/zram_drv.c | 5 +++-- drivers/md/bcache/request.c | 7 ++++--- drivers/md/dm.c | 6 +++--- drivers/nvdimm/nd.h | 5 +++-- include/linux/bio.h | 9 +++++---- include/linux/genhd.h | 14 +++++++++----- 13 files changed, 64 insertions(+), 49 deletions(-) diff --git a/block/bio.c b/block/bio.c index 9cf98b29588a..4d751a5b56f0 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1729,29 +1729,29 @@ void bio_check_pages_dirty(struct bio *bio) } } -void generic_start_io_acct(int rw, unsigned long sectors, - struct hd_struct *part) +void generic_start_io_acct(struct request_queue *q, int rw, + unsigned long sectors, struct hd_struct *part) { int cpu = part_stat_lock(); - part_round_stats(cpu, part); + part_round_stats(q, cpu, part); part_stat_inc(cpu, part, ios[rw]); part_stat_add(cpu, part, sectors[rw], sectors); - part_inc_in_flight(part, rw); + part_inc_in_flight(q, part, rw); part_stat_unlock(); } EXPORT_SYMBOL(generic_start_io_acct); -void generic_end_io_acct(int rw, struct hd_struct *part, - unsigned long start_time) +void generic_end_io_acct(struct request_queue *q, int rw, + struct hd_struct *part, unsigned long start_time) { unsigned long duration = jiffies - start_time; int cpu = part_stat_lock(); part_stat_add(cpu, part, ticks[rw], duration); - part_round_stats(cpu, part); - part_dec_in_flight(part, rw); + part_round_stats(q, cpu, part); + part_dec_in_flight(q, part, rw); part_stat_unlock(); } diff --git a/block/blk-core.c b/block/blk-core.c index af393d5a9680..ba88d71b442f 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1469,15 +1469,15 @@ static void add_acct_request(struct request_queue *q, struct request *rq, __elv_add_request(q, rq, where); } -static void part_round_stats_single(int cpu, struct hd_struct *part, - unsigned long now) +static void part_round_stats_single(struct request_queue *q, int cpu, + struct hd_struct *part, unsigned long now) { int inflight; if (now == part->stamp) return; - inflight = part_in_flight(part); + inflight = part_in_flight(q, part); if (inflight) { __part_stat_add(cpu, part, time_in_queue, inflight * (now - part->stamp)); @@ -1488,6 +1488,7 @@ static void part_round_stats_single(int cpu, struct hd_struct *part, /** * part_round_stats() - Round off the performance stats on a struct disk_stats. + * @q: target block queue * @cpu: cpu number for stats access * @part: target partition * @@ -1502,13 +1503,14 @@ static void part_round_stats_single(int cpu, struct hd_struct *part, * /proc/diskstats. This accounts immediately for all queue usage up to * the current jiffies and restarts the counters again. */ -void part_round_stats(int cpu, struct hd_struct *part) +void part_round_stats(struct request_queue *q, int cpu, struct hd_struct *part) { unsigned long now = jiffies; if (part->partno) - part_round_stats_single(cpu, &part_to_disk(part)->part0, now); - part_round_stats_single(cpu, part, now); + part_round_stats_single(q, cpu, &part_to_disk(part)->part0, + now); + part_round_stats_single(q, cpu, part, now); } EXPORT_SYMBOL_GPL(part_round_stats); @@ -2434,8 +2436,8 @@ void blk_account_io_done(struct request *req) part_stat_inc(cpu, part, ios[rw]); part_stat_add(cpu, part, ticks[rw], duration); - part_round_stats(cpu, part); - part_dec_in_flight(part, rw); + part_round_stats(req->q, cpu, part); + part_dec_in_flight(req->q, part, rw); hd_struct_put(part); part_stat_unlock(); @@ -2492,8 +2494,8 @@ void blk_account_io_start(struct request *rq, bool new_io) part = &rq->rq_disk->part0; hd_struct_get(part); } - part_round_stats(cpu, part); - part_inc_in_flight(part, rw); + part_round_stats(rq->q, cpu, part); + part_inc_in_flight(rq->q, part, rw); rq->part = part; } diff --git a/block/blk-merge.c b/block/blk-merge.c index 99038830fb42..05f116bfb99d 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -633,8 +633,8 @@ static void blk_account_io_merge(struct request *req) cpu = part_stat_lock(); part = req->part; - part_round_stats(cpu, part); - part_dec_in_flight(part, rq_data_dir(req)); + part_round_stats(req->q, cpu, part); + part_dec_in_flight(req->q, part, rq_data_dir(req)); hd_struct_put(part); part_stat_unlock(); diff --git a/block/genhd.c b/block/genhd.c index 7f520fa25d16..f735af67a0c9 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1217,7 +1217,7 @@ static int diskstats_show(struct seq_file *seqf, void *v) disk_part_iter_init(&piter, gp, DISK_PITER_INCL_EMPTY_PART0); while ((hd = disk_part_iter_next(&piter))) { cpu = part_stat_lock(); - part_round_stats(cpu, hd); + part_round_stats(gp->queue, cpu, hd); part_stat_unlock(); seq_printf(seqf, "%4d %7d %s %lu %lu %lu " "%u %lu %lu %lu %u %u %u %u\n", @@ -1231,7 +1231,7 @@ static int diskstats_show(struct seq_file *seqf, void *v) part_stat_read(hd, merges[WRITE]), part_stat_read(hd, sectors[WRITE]), jiffies_to_msecs(part_stat_read(hd, ticks[WRITE])), - part_in_flight(hd), + part_in_flight(gp->queue, hd), jiffies_to_msecs(part_stat_read(hd, io_ticks)), jiffies_to_msecs(part_stat_read(hd, time_in_queue)) ); diff --git a/block/partition-generic.c b/block/partition-generic.c index c5ec8246e25e..d1bdd61e1d71 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -112,10 +112,11 @@ ssize_t part_stat_show(struct device *dev, struct device_attribute *attr, char *buf) { struct hd_struct *p = dev_to_part(dev); + struct request_queue *q = dev_to_disk(dev)->queue; int cpu; cpu = part_stat_lock(); - part_round_stats(cpu, p); + part_round_stats(q, cpu, p); part_stat_unlock(); return sprintf(buf, "%8lu %8lu %8llu %8u " @@ -130,7 +131,7 @@ ssize_t part_stat_show(struct device *dev, part_stat_read(p, merges[WRITE]), (unsigned long long)part_stat_read(p, sectors[WRITE]), jiffies_to_msecs(part_stat_read(p, ticks[WRITE])), - part_in_flight(p), + part_in_flight(q, p), jiffies_to_msecs(part_stat_read(p, io_ticks)), jiffies_to_msecs(part_stat_read(p, time_in_queue))); } diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index f6e865b2d543..8d6b5d137b5e 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -36,14 +36,18 @@ static bool drbd_may_do_local_read(struct drbd_device *device, sector_t sector, /* Update disk stats at start of I/O request */ static void _drbd_start_io_acct(struct drbd_device *device, struct drbd_request *req) { - generic_start_io_acct(bio_data_dir(req->master_bio), req->i.size >> 9, - &device->vdisk->part0); + struct request_queue *q = device->rq_queue; + + generic_start_io_acct(q, bio_data_dir(req->master_bio), + req->i.size >> 9, &device->vdisk->part0); } /* Update disk stats when completing request upwards */ static void _drbd_end_io_acct(struct drbd_device *device, struct drbd_request *req) { - generic_end_io_acct(bio_data_dir(req->master_bio), + struct request_queue *q = device->rq_queue; + + generic_end_io_acct(q, bio_data_dir(req->master_bio), &device->vdisk->part0, req->start_jif); } diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c index 7f4acebf4657..e397d3ee7308 100644 --- a/drivers/block/rsxx/dev.c +++ b/drivers/block/rsxx/dev.c @@ -112,7 +112,7 @@ static const struct block_device_operations rsxx_fops = { static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio) { - generic_start_io_acct(bio_data_dir(bio), bio_sectors(bio), + generic_start_io_acct(card->queue, bio_data_dir(bio), bio_sectors(bio), &card->gendisk->part0); } @@ -120,8 +120,8 @@ static void disk_stats_complete(struct rsxx_cardinfo *card, struct bio *bio, unsigned long start_time) { - generic_end_io_acct(bio_data_dir(bio), &card->gendisk->part0, - start_time); + generic_end_io_acct(card->queue, bio_data_dir(bio), + &card->gendisk->part0, start_time); } static void bio_dma_done_cb(struct rsxx_cardinfo *card, diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index debee952dcc1..56746f420faa 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -811,9 +811,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, { unsigned long start_time = jiffies; int rw_acct = is_write ? REQ_OP_WRITE : REQ_OP_READ; + struct request_queue *q = zram->disk->queue; int ret; - generic_start_io_acct(rw_acct, bvec->bv_len >> SECTOR_SHIFT, + generic_start_io_acct(q, rw_acct, bvec->bv_len >> SECTOR_SHIFT, &zram->disk->part0); if (!is_write) { @@ -825,7 +826,7 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, ret = zram_bvec_write(zram, bvec, index, offset); } - generic_end_io_acct(rw_acct, &zram->disk->part0, start_time); + generic_end_io_acct(q, rw_acct, &zram->disk->part0, start_time); if (unlikely(ret)) { if (!is_write) diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 019b3df9f1c6..72eb97176403 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -607,7 +607,8 @@ static void request_endio(struct bio *bio) static void bio_complete(struct search *s) { if (s->orig_bio) { - generic_end_io_acct(bio_data_dir(s->orig_bio), + struct request_queue *q = bdev_get_queue(s->orig_bio->bi_bdev); + generic_end_io_acct(q, bio_data_dir(s->orig_bio), &s->d->disk->part0, s->start_time); trace_bcache_request_end(s->d, s->orig_bio); @@ -959,7 +960,7 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q, struct cached_dev *dc = container_of(d, struct cached_dev, disk); int rw = bio_data_dir(bio); - generic_start_io_acct(rw, bio_sectors(bio), &d->disk->part0); + generic_start_io_acct(q, rw, bio_sectors(bio), &d->disk->part0); bio->bi_bdev = dc->bdev; bio->bi_iter.bi_sector += dc->sb.data_offset; @@ -1074,7 +1075,7 @@ static blk_qc_t flash_dev_make_request(struct request_queue *q, struct bcache_device *d = bio->bi_bdev->bd_disk->private_data; int rw = bio_data_dir(bio); - generic_start_io_acct(rw, bio_sectors(bio), &d->disk->part0); + generic_start_io_acct(q, rw, bio_sectors(bio), &d->disk->part0); s = search_alloc(bio, d); cl = &s->cl; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 402946035308..856c4d69e743 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -516,7 +516,7 @@ static void start_io_acct(struct dm_io *io) io->start_time = jiffies; cpu = part_stat_lock(); - part_round_stats(cpu, &dm_disk(md)->part0); + part_round_stats(md->queue, cpu, &dm_disk(md)->part0); part_stat_unlock(); atomic_set(&dm_disk(md)->part0.in_flight[rw], atomic_inc_return(&md->pending[rw])); @@ -535,7 +535,7 @@ static void end_io_acct(struct dm_io *io) int pending; int rw = bio_data_dir(bio); - generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time); + generic_end_io_acct(md->queue, rw, &dm_disk(md)->part0, io->start_time); if (unlikely(dm_stats_used(&md->stats))) dm_stats_account_io(&md->stats, bio_data_dir(bio), @@ -1408,7 +1408,7 @@ static blk_qc_t dm_make_request(struct request_queue *q, struct bio *bio) map = dm_get_live_table(md, &srcu_idx); - generic_start_io_acct(rw, bio_sectors(bio), &dm_disk(md)->part0); + generic_start_io_acct(q, 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))) { diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 03852d738eec..7063cad88bd9 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -383,7 +383,7 @@ static inline bool nd_iostat_start(struct bio *bio, unsigned long *start) return false; *start = jiffies; - generic_start_io_acct(bio_data_dir(bio), + generic_start_io_acct(disk->queue, bio_data_dir(bio), bio_sectors(bio), &disk->part0); return true; } @@ -391,7 +391,8 @@ static inline void nd_iostat_end(struct bio *bio, unsigned long start) { struct gendisk *disk = bio->bi_bdev->bd_disk; - generic_end_io_acct(bio_data_dir(bio), &disk->part0, start); + generic_end_io_acct(disk->queue, bio_data_dir(bio), &disk->part0, + start); } static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector, unsigned int len) diff --git a/include/linux/bio.h b/include/linux/bio.h index 4907bea03908..c447959968c1 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -447,10 +447,11 @@ extern struct bio *bio_copy_kern(struct request_queue *, void *, unsigned int, extern void bio_set_pages_dirty(struct bio *bio); extern void bio_check_pages_dirty(struct bio *bio); -void generic_start_io_acct(int rw, unsigned long sectors, - struct hd_struct *part); -void generic_end_io_acct(int rw, struct hd_struct *part, - unsigned long start_time); +void generic_start_io_acct(struct request_queue *q, int rw, + unsigned long sectors, struct hd_struct *part); +void generic_end_io_acct(struct request_queue *q, int rw, + struct hd_struct *part, + unsigned long start_time); #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE # error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform" diff --git a/include/linux/genhd.h b/include/linux/genhd.h index e619fae2f037..7f7427e00f9c 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -362,23 +362,27 @@ static inline void free_part_stats(struct hd_struct *part) #define part_stat_sub(cpu, gendiskp, field, subnd) \ part_stat_add(cpu, gendiskp, field, -subnd) -static inline void part_inc_in_flight(struct hd_struct *part, int rw) +static inline void part_inc_in_flight(struct request_queue *q, + struct hd_struct *part, int rw) { atomic_inc(&part->in_flight[rw]); if (part->partno) atomic_inc(&part_to_disk(part)->part0.in_flight[rw]); } -static inline void part_dec_in_flight(struct hd_struct *part, int rw) +static inline void part_dec_in_flight(struct request_queue *q, + struct hd_struct *part, int rw) { atomic_dec(&part->in_flight[rw]); if (part->partno) atomic_dec(&part_to_disk(part)->part0.in_flight[rw]); } -static inline int part_in_flight(struct hd_struct *part) +static inline int part_in_flight(struct request_queue *q, + struct hd_struct *part) { - return atomic_read(&part->in_flight[0]) + atomic_read(&part->in_flight[1]); + return atomic_read(&part->in_flight[0]) + + atomic_read(&part->in_flight[1]); } static inline struct partition_meta_info *alloc_part_info(struct gendisk *disk) @@ -395,7 +399,7 @@ static inline void free_part_info(struct hd_struct *part) } /* block/blk-core.c */ -extern void part_round_stats(int cpu, struct hd_struct *part); +extern void part_round_stats(struct request_queue *q, int cpu, struct hd_struct *part); /* block/genhd.c */ extern void device_add_disk(struct device *parent, struct gendisk *disk); -- 2.7.4