diff options
| author | Christoph Hellwig <hch@lst.de> | 2014-04-16 09:44:56 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-16 14:15:25 -0600 |
| commit | 2f268556567ebeb3538f99b9bdad177581439dcb (patch) | |
| tree | 67e3406c30d8998c8fc1a12a43af0ab4139b5206 | |
| parent | 70f4db639c5b2479e08657392cbf3ba3cceea11c (diff) | |
blk-mq: add blk_mq_start_hw_queues
Add a helper to unconditionally kick contexts of a queue. This will
be needed by the SCSI layer to provide fair queueing between multiple
devices on a single host.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | block/blk-mq.c | 11 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 0cf52dddfa6b..543bbc08a261 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -701,6 +701,17 @@ void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx) } EXPORT_SYMBOL(blk_mq_start_hw_queue); +void blk_mq_start_hw_queues(struct request_queue *q) +{ + struct blk_mq_hw_ctx *hctx; + int i; + + queue_for_each_hw_ctx(q, hctx, i) + blk_mq_start_hw_queue(hctx); +} +EXPORT_SYMBOL(blk_mq_start_hw_queues); + + void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async) { struct blk_mq_hw_ctx *hctx; diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index ae868e77bc2f..391377e53367 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -158,6 +158,7 @@ void blk_mq_complete_request(struct request *rq); void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx); 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_queues(struct request_queue *q, bool async); void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); |