From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: [PATCH 02/12] blk-mq: Introduce blk_mq_hctx_stopped() Date: Wed, 26 Oct 2016 15:51:33 -0700 Message-ID: <0de50789-e3b7-0a07-73c1-4fb87b1f957e@sandisk.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jens Axboe Cc: Christoph Hellwig , James Bottomley , "Martin K. Petersen" , Mike Snitzer , Doug Ledford , Keith Busch , Ming Lei , Laurence Oberman , "linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" List-Id: linux-rdma@vger.kernel.org Multiple functions test the BLK_MQ_S_STOPPED bit so introduce a helper function that performs this test. Signed-off-by: Bart Van Assche Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Sagi Grimberg Cc: Johannes Thumshirn --- block/blk-mq.c | 12 ++++++------ block/blk-mq.h | 5 +++++ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index b5dcafb..b52b3a6 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -787,7 +787,7 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx) struct list_head *dptr; int queued; - if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state))) + if (unlikely(blk_mq_hctx_stopped(hctx))) return; WARN_ON(!cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask) && @@ -912,8 +912,8 @@ static int blk_mq_hctx_next_cpu(struct blk_mq_hw_ctx *hctx) void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) { - if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state) || - !blk_mq_hw_queue_mapped(hctx))) + if (unlikely(blk_mq_hctx_stopped(hctx) || + !blk_mq_hw_queue_mapped(hctx))) return; if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) { @@ -938,7 +938,7 @@ void blk_mq_run_hw_queues(struct request_queue *q, bool async) queue_for_each_hw_ctx(q, hctx, i) { if ((!blk_mq_hctx_has_pending(hctx) && list_empty_careful(&hctx->dispatch)) || - test_bit(BLK_MQ_S_STOPPED, &hctx->state)) + blk_mq_hctx_stopped(hctx)) continue; blk_mq_run_hw_queue(hctx, async); @@ -988,7 +988,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async) int i; queue_for_each_hw_ctx(q, hctx, i) { - if (!test_bit(BLK_MQ_S_STOPPED, &hctx->state)) + if (!blk_mq_hctx_stopped(hctx)) continue; clear_bit(BLK_MQ_S_STOPPED, &hctx->state); @@ -1332,7 +1332,7 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) blk_mq_put_ctx(data.ctx); if (!old_rq) goto done; - if (test_bit(BLK_MQ_S_STOPPED, &data.hctx->state) || + if (blk_mq_hctx_stopped(data.hctx) || blk_mq_direct_issue_request(old_rq, &cookie) != 0) blk_mq_insert_request(old_rq, false, true, true); goto done; diff --git a/block/blk-mq.h b/block/blk-mq.h index e5d2524..ac772da 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -100,6 +100,11 @@ static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data, data->hctx = hctx; } +static inline bool blk_mq_hctx_stopped(struct blk_mq_hw_ctx *hctx) +{ + return test_bit(BLK_MQ_S_STOPPED, &hctx->state); +} + static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx) { return hctx->nr_ctx && hctx->tags; -- 2.10.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html