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authorBart Van Assche <bart.vanassche@sandisk.com>2017-04-07 11:16:52 -0700
committerJens Axboe <axboe@fb.com>2017-04-07 12:27:06 -0600
commit7587a5ae7eef0439f7be31f1b5959af062bbc5ec (patch)
treee93068ad849c63192765dcb8ea4d1410f70eeda2 /include
parentebe8bddb6e30d7a02775b9972099271fc5910f37 (diff)
blk-mq: Introduce blk_mq_delay_run_hw_queue()
Introduce a function that runs a hardware queue unconditionally after a delay. Note: there is already a function that stops and restarts a hardware queue after a delay, namely blk_mq_delay_queue(). This function will be used in the next patch in this series. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Long Li <longli@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/blk-mq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b296a9006117..9382c5da7a2e 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -51,6 +51,7 @@ struct blk_mq_hw_ctx {
atomic_t nr_active;
+ struct delayed_work delayed_run_work;
struct delayed_work delay_work;
struct hlist_node cpuhp_dead;
@@ -238,6 +239,7 @@ void blk_mq_stop_hw_queues(struct request_queue *q);
void blk_mq_start_hw_queues(struct request_queue *q);
void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
+void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_run_hw_queues(struct request_queue *q, bool async);
void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset,