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| author | Ming Lei <tom.leiming@gmail.com> | 2014-05-27 17:35:14 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-05-27 17:37:08 +0200 |
| commit | 3d2936f457a847d9d88a9cc127e0eb7a0ebba0ff (patch) | |
| tree | 575a307f9715ee60ab45dbe31b677c644975f7ad /block/blk-mq.c | |
| parent | blk-mq: avoid code duplication (diff) | |
| download | linux-3d2936f457a847d9d88a9cc127e0eb7a0ebba0ff.tar.xz linux-3d2936f457a847d9d88a9cc127e0eb7a0ebba0ff.zip | |
block: only allocate/free mq_usage_counter in blk-mq
The percpu counter is only used for blk-mq, so move
its allocation and free inside blk-mq, and don't
allocate it for legacy queue device.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 07851753a049..e8b5f74dc1a1 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1781,6 +1781,9 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) if (!q) goto err_hctxs; + if (percpu_counter_init(&q->mq_usage_counter, 0)) + goto err_map; + q->mq_map = blk_mq_make_queue_map(set); if (!q->mq_map) goto err_map; @@ -1867,6 +1870,8 @@ void blk_mq_free_queue(struct request_queue *q) blk_mq_exit_hw_queues(q, set, set->nr_hw_queues); blk_mq_free_hw_queues(q, set); + percpu_counter_destroy(&q->mq_usage_counter); + free_percpu(q->queue_ctx); kfree(q->queue_hw_ctx); kfree(q->mq_map); |