From 5d1b25c1ecabb37f8eb58c8e9dd74f77f703e5d9 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 28 Oct 2016 17:19:15 -0700 Subject: [PATCH] blk-mq: Introduce blk_mq_hctx_stopped() Multiple functions test the BLK_MQ_S_STOPPED bit so introduce a helper function that performs this test. Signed-off-by: Bart Van Assche Reviewed-by: Ming Lei Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe --- 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 92edd28b7e76..2864e191cc86 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -785,7 +785,7 @@ 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) && @@ -910,8 +910,8 @@ 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)) { @@ -936,7 +936,7 @@ 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); @@ -986,7 +986,7 @@ 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); @@ -1317,7 +1317,7 @@ 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 e5d25249028c..ac772dac7ce8 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; -- 2.45.2