提交 5d1b25c1 编写于 作者: B Bart Van Assche 提交者: Jens Axboe

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: NBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: NMing Lei <tom.leiming@gmail.com>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NSagi Grimberg <sagi@grimberg.me>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@fb.com>
上级 bc27c01b
...@@ -785,7 +785,7 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx) ...@@ -785,7 +785,7 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)
struct list_head *dptr; struct list_head *dptr;
int queued; int queued;
if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state))) if (unlikely(blk_mq_hctx_stopped(hctx)))
return; return;
WARN_ON(!cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask) && 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) ...@@ -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) void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
{ {
if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state) || if (unlikely(blk_mq_hctx_stopped(hctx) ||
!blk_mq_hw_queue_mapped(hctx))) !blk_mq_hw_queue_mapped(hctx)))
return; return;
if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) { if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) {
...@@ -936,7 +936,7 @@ void blk_mq_run_hw_queues(struct request_queue *q, bool async) ...@@ -936,7 +936,7 @@ void blk_mq_run_hw_queues(struct request_queue *q, bool async)
queue_for_each_hw_ctx(q, hctx, i) { queue_for_each_hw_ctx(q, hctx, i) {
if ((!blk_mq_hctx_has_pending(hctx) && if ((!blk_mq_hctx_has_pending(hctx) &&
list_empty_careful(&hctx->dispatch)) || list_empty_careful(&hctx->dispatch)) ||
test_bit(BLK_MQ_S_STOPPED, &hctx->state)) blk_mq_hctx_stopped(hctx))
continue; continue;
blk_mq_run_hw_queue(hctx, async); blk_mq_run_hw_queue(hctx, async);
...@@ -986,7 +986,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async) ...@@ -986,7 +986,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async)
int i; int i;
queue_for_each_hw_ctx(q, hctx, 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; continue;
clear_bit(BLK_MQ_S_STOPPED, &hctx->state); 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) ...@@ -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); blk_mq_put_ctx(data.ctx);
if (!old_rq) if (!old_rq)
goto done; 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_direct_issue_request(old_rq, &cookie) != 0)
blk_mq_insert_request(old_rq, false, true, true); blk_mq_insert_request(old_rq, false, true, true);
goto done; goto done;
......
...@@ -100,6 +100,11 @@ static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data, ...@@ -100,6 +100,11 @@ static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data,
data->hctx = hctx; 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) static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx)
{ {
return hctx->nr_ctx && hctx->tags; return hctx->nr_ctx && hctx->tags;
......
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