| Message ID | 20201209052951.16136-3-bvanassche@acm.org (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | Rework runtime suspend and SPI domain validation | expand |
On 2020-12-09 13:29, Bart Van Assche wrote: > Introduce the BLK_MQ_REQ_PM flag. This flag makes the request > allocation > functions set RQF_PM. This is the first step towards removing > BLK_MQ_REQ_PREEMPT. > > Reviewed-by: Christoph Hellwig <hch@lst.de> > Reviewed-by: Hannes Reinecke <hare@suse.de> > Reviewed-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Can Guo <cang@codeaurora.org> > Cc: Alan Stern <stern@rowland.harvard.edu> > Cc: Stanley Chu <stanley.chu@mediatek.com> > Cc: Ming Lei <ming.lei@redhat.com> > Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Cc: Can Guo <cang@codeaurora.org> > Signed-off-by: Bart Van Assche <bvanassche@acm.org> > --- > block/blk-core.c | 7 ++++--- > block/blk-mq.c | 2 ++ > include/linux/blk-mq.h | 2 ++ > 3 files changed, 8 insertions(+), 3 deletions(-) > > diff --git a/block/blk-core.c b/block/blk-core.c > index 2db8bda43b6e..10696f9fb6ac 100644 > --- a/block/blk-core.c > +++ b/block/blk-core.c > @@ -424,11 +424,11 @@ EXPORT_SYMBOL(blk_cleanup_queue); > /** > * blk_queue_enter() - try to increase q->q_usage_counter > * @q: request queue pointer > - * @flags: BLK_MQ_REQ_NOWAIT and/or BLK_MQ_REQ_PREEMPT > + * @flags: BLK_MQ_REQ_NOWAIT, BLK_MQ_REQ_PM and/or BLK_MQ_REQ_PREEMPT > */ > int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) > { > - const bool pm = flags & BLK_MQ_REQ_PREEMPT; > + const bool pm = flags & (BLK_MQ_REQ_PM | BLK_MQ_REQ_PREEMPT); > > while (true) { > bool success = false; > @@ -630,7 +630,8 @@ struct request *blk_get_request(struct > request_queue *q, unsigned int op, > struct request *req; > > WARN_ON_ONCE(op & REQ_NOWAIT); > - WARN_ON_ONCE(flags & ~(BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_PREEMPT)); > + WARN_ON_ONCE(flags & ~(BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_PM | > + BLK_MQ_REQ_PREEMPT)); > > req = blk_mq_alloc_request(q, op, flags); > if (!IS_ERR(req) && q->mq_ops->initialize_rq_fn) > diff --git a/block/blk-mq.c b/block/blk-mq.c > index 1b25ec2fe9be..b5880a1fb38d 100644 > --- a/block/blk-mq.c > +++ b/block/blk-mq.c > @@ -292,6 +292,8 @@ static struct request *blk_mq_rq_ctx_init(struct > blk_mq_alloc_data *data, > rq->mq_hctx = data->hctx; > rq->rq_flags = 0; > rq->cmd_flags = data->cmd_flags; > + if (data->flags & BLK_MQ_REQ_PM) > + rq->rq_flags |= RQF_PM; > if (data->flags & BLK_MQ_REQ_PREEMPT) > rq->rq_flags |= RQF_PREEMPT; > if (blk_queue_io_stat(data->q)) > diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h > index b23eeca4d677..c00e856c6fb1 100644 > --- a/include/linux/blk-mq.h > +++ b/include/linux/blk-mq.h > @@ -444,6 +444,8 @@ enum { > BLK_MQ_REQ_NOWAIT = (__force blk_mq_req_flags_t)(1 << 0), > /* allocate from reserved pool */ > BLK_MQ_REQ_RESERVED = (__force blk_mq_req_flags_t)(1 << 1), > + /* set RQF_PM */ > + BLK_MQ_REQ_PM = (__force blk_mq_req_flags_t)(1 << 2), > /* set RQF_PREEMPT */ > BLK_MQ_REQ_PREEMPT = (__force blk_mq_req_flags_t)(1 << 3), > };
diff --git a/block/blk-core.c b/block/blk-core.c index 2db8bda43b6e..10696f9fb6ac 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -424,11 +424,11 @@ EXPORT_SYMBOL(blk_cleanup_queue); /** * blk_queue_enter() - try to increase q->q_usage_counter * @q: request queue pointer - * @flags: BLK_MQ_REQ_NOWAIT and/or BLK_MQ_REQ_PREEMPT + * @flags: BLK_MQ_REQ_NOWAIT, BLK_MQ_REQ_PM and/or BLK_MQ_REQ_PREEMPT */ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags) { - const bool pm = flags & BLK_MQ_REQ_PREEMPT; + const bool pm = flags & (BLK_MQ_REQ_PM | BLK_MQ_REQ_PREEMPT); while (true) { bool success = false; @@ -630,7 +630,8 @@ struct request *blk_get_request(struct request_queue *q, unsigned int op, struct request *req; WARN_ON_ONCE(op & REQ_NOWAIT); - WARN_ON_ONCE(flags & ~(BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_PREEMPT)); + WARN_ON_ONCE(flags & ~(BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_PM | + BLK_MQ_REQ_PREEMPT)); req = blk_mq_alloc_request(q, op, flags); if (!IS_ERR(req) && q->mq_ops->initialize_rq_fn) diff --git a/block/blk-mq.c b/block/blk-mq.c index 1b25ec2fe9be..b5880a1fb38d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -292,6 +292,8 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, rq->mq_hctx = data->hctx; rq->rq_flags = 0; rq->cmd_flags = data->cmd_flags; + if (data->flags & BLK_MQ_REQ_PM) + rq->rq_flags |= RQF_PM; if (data->flags & BLK_MQ_REQ_PREEMPT) rq->rq_flags |= RQF_PREEMPT; if (blk_queue_io_stat(data->q)) diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index b23eeca4d677..c00e856c6fb1 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -444,6 +444,8 @@ enum { BLK_MQ_REQ_NOWAIT = (__force blk_mq_req_flags_t)(1 << 0), /* allocate from reserved pool */ BLK_MQ_REQ_RESERVED = (__force blk_mq_req_flags_t)(1 << 1), + /* set RQF_PM */ + BLK_MQ_REQ_PM = (__force blk_mq_req_flags_t)(1 << 2), /* set RQF_PREEMPT */ BLK_MQ_REQ_PREEMPT = (__force blk_mq_req_flags_t)(1 << 3), };