From 624dbe47541643b72868a59b2c0059bb53dc923f Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 27 May 2014 23:35:13 +0800 Subject: [PATCH] blk-mq: avoid code duplication blk_mq_exit_hw_queues() and blk_mq_free_hw_queues() are introduced to avoid code duplication. Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-mq.c | 61 ++++++++++++++++++++++++++++++-------------------- 1 file changed, 37 insertions(+), 24 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index dad22a9abe49..07851753a049 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1523,11 +1523,43 @@ static int blk_mq_hctx_notify(void *data, unsigned long action, return NOTIFY_OK; } +static void blk_mq_exit_hw_queues(struct request_queue *q, + struct blk_mq_tag_set *set, int nr_queue) +{ + struct blk_mq_hw_ctx *hctx; + unsigned int i; + + queue_for_each_hw_ctx(q, hctx, i) { + if (i == nr_queue) + break; + + if (set->ops->exit_hctx) + set->ops->exit_hctx(hctx, i); + + blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier); + kfree(hctx->ctxs); + blk_mq_free_bitmap(&hctx->ctx_map); + } + +} + +static void blk_mq_free_hw_queues(struct request_queue *q, + struct blk_mq_tag_set *set) +{ + struct blk_mq_hw_ctx *hctx; + unsigned int i; + + queue_for_each_hw_ctx(q, hctx, i) { + free_cpumask_var(hctx->cpumask); + set->ops->free_hctx(hctx, i); + } +} + static int blk_mq_init_hw_queues(struct request_queue *q, struct blk_mq_tag_set *set) { struct blk_mq_hw_ctx *hctx; - unsigned int i, j; + unsigned int i; /* * Initialize hardware queues @@ -1579,17 +1611,7 @@ static int blk_mq_init_hw_queues(struct request_queue *q, /* * Init failed */ - queue_for_each_hw_ctx(q, hctx, j) { - if (i == j) - break; - - if (set->ops->exit_hctx) - set->ops->exit_hctx(hctx, j); - - blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier); - kfree(hctx->ctxs); - blk_mq_free_bitmap(&hctx->ctx_map); - } + blk_mq_exit_hw_queues(q, set, i); return 1; } @@ -1838,21 +1860,12 @@ EXPORT_SYMBOL(blk_mq_init_queue); void blk_mq_free_queue(struct request_queue *q) { - struct blk_mq_hw_ctx *hctx; - int i; + struct blk_mq_tag_set *set = q->tag_set; blk_mq_del_queue_tag_set(q); - queue_for_each_hw_ctx(q, hctx, i) { - blk_mq_tag_idle(hctx); - kfree(hctx->ctxs); - blk_mq_free_bitmap(&hctx->ctx_map); - blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier); - if (q->mq_ops->exit_hctx) - q->mq_ops->exit_hctx(hctx, i); - free_cpumask_var(hctx->cpumask); - q->mq_ops->free_hctx(hctx, i); - } + blk_mq_exit_hw_queues(q, set, set->nr_hw_queues); + blk_mq_free_hw_queues(q, set); free_percpu(q->queue_ctx); kfree(q->queue_hw_ctx); -- 2.20.1