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blk-mq: move blk_mq_get_ctx/blk_mq_put_ctx to mq private header 

The blk-mq tag code need these helpers.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Ming Lei 2014-06-01 00:43:36 +08:00 committed by Jens Axboe
parent 3de0ef8d0d
commit 1aecfe4887
2 changed files with 22 additions and 22 deletions
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22
block/blk-mq.c
View File

@ -33,28 +33,6 @@ static LIST_HEAD(all_q_list);
static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx);
static struct blk_mq_ctx *__blk_mq_get_ctx(struct request_queue *q,
unsigned int cpu)
{
return per_cpu_ptr(q->queue_ctx, cpu);
}
/*
* This assumes per-cpu software queueing queues. They could be per-node
* as well, for instance. For now this is hardcoded as-is. Note that we don't
* care about preemption, since we know the ctx's are persistent. This does
* mean that we can't rely on ctx always matching the currently running CPU.
*/
static struct blk_mq_ctx *blk_mq_get_ctx(struct request_queue *q)
{
return __blk_mq_get_ctx(q, get_cpu());
}
static void blk_mq_put_ctx(struct blk_mq_ctx *ctx)
{
put_cpu();
}
/*
* Check if any of the ctx's have pending work in this hardware queue
*/

22
block/blk-mq.h
View File

@ -69,4 +69,26 @@ struct blk_align_bitmap {
unsigned long depth;
} ____cacheline_aligned_in_smp;
static inline struct blk_mq_ctx *__blk_mq_get_ctx(struct request_queue *q,
unsigned int cpu)
{
return per_cpu_ptr(q->queue_ctx, cpu);
}
/*
* This assumes per-cpu software queueing queues. They could be per-node
* as well, for instance. For now this is hardcoded as-is. Note that we don't
* care about preemption, since we know the ctx's are persistent. This does
* mean that we can't rely on ctx always matching the currently running CPU.
*/
static inline struct blk_mq_ctx *blk_mq_get_ctx(struct request_queue *q)
{
return __blk_mq_get_ctx(q, get_cpu());
}
static inline void blk_mq_put_ctx(struct blk_mq_ctx *ctx)
{
put_cpu();
}
#endif