Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 280d45f6 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

blk-mq: add blk_mq_stop_hw_queues 



Add a helper to iterate over all hw queues and stop them.  This is useful
for driver that implement PM suspend functionality.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>

Modified to just call blk_mq_stop_hw_queue() by Jens.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f2298c04

block/blk-mq.c

+10 −0
Original line number Diff line number Diff line
@@ -672,6 +672,16 @@ void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx) 
}

EXPORT_SYMBOL(blk_mq_stop_hw_queue);



void blk_mq_stop_hw_queues(struct request_queue *q)

{

	struct blk_mq_hw_ctx *hctx;

	int i;



	queue_for_each_hw_ctx(q, hctx, i)

		blk_mq_stop_hw_queue(hctx);

}

EXPORT_SYMBOL(blk_mq_stop_hw_queues);



void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx)

{

	clear_bit(BLK_MQ_S_STOPPED, &hctx->state);

include/linux/blk-mq.h

+1 −0
Original line number Diff line number Diff line
@@ -136,6 +136,7 @@ void blk_mq_end_io(struct request *rq, int error); 


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_stopped_hw_queues(struct request_queue *q);



/*