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| author | Tejun Heo <tj@kernel.org> | 2019-08-28 15:05:55 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-08-28 21:17:07 -0600 |
| commit | 9677a3e01f838622d2efc9a3ccb97090a2c3156a (patch) | |
| tree | 8fee617bcc94779a92ab88c46d7862f0885a1282 /block/blk-rq-qos.h | |
| parent | d3e65ffff61c329fb2d0bf15736c440c2d0cfc97 (diff) | |
| download | linux-9677a3e01f838622d2efc9a3ccb97090a2c3156a.tar.bz2 | |
block/rq_qos: implement rq_qos_ops->queue_depth_changed()
wbt already gets queue depth changed notification through
wbt_set_queue_depth(). Generalize it into
rq_qos_ops->queue_depth_changed() so that other rq_qos policies can
easily hook into the events too.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-rq-qos.h')
| -rw-r--r-- | block/blk-rq-qos.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h index 8e426a8505b6..e15b6907b76d 100644 --- a/block/blk-rq-qos.h +++ b/block/blk-rq-qos.h @@ -41,6 +41,7 @@ struct rq_qos_ops { void (*done)(struct rq_qos *, struct request *); void (*done_bio)(struct rq_qos *, struct bio *); void (*cleanup)(struct rq_qos *, struct bio *); + void (*queue_depth_changed)(struct rq_qos *); void (*exit)(struct rq_qos *); const struct blk_mq_debugfs_attr *debugfs_attrs; }; @@ -138,6 +139,7 @@ void __rq_qos_throttle(struct rq_qos *rqos, struct bio *bio); void __rq_qos_track(struct rq_qos *rqos, struct request *rq, struct bio *bio); void __rq_qos_merge(struct rq_qos *rqos, struct request *rq, struct bio *bio); void __rq_qos_done_bio(struct rq_qos *rqos, struct bio *bio); +void __rq_qos_queue_depth_changed(struct rq_qos *rqos); static inline void rq_qos_cleanup(struct request_queue *q, struct bio *bio) { @@ -194,6 +196,12 @@ static inline void rq_qos_merge(struct request_queue *q, struct request *rq, __rq_qos_merge(q->rq_qos, rq, bio); } +static inline void rq_qos_queue_depth_changed(struct request_queue *q) +{ + if (q->rq_qos) + __rq_qos_queue_depth_changed(q->rq_qos); +} + void rq_qos_exit(struct request_queue *); #endif |