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skd: Convert explicit skd_request_fn() calls 

This will make it easier to convert this driver to the blk-mq
approach. This patch also reduces interrupt latency by moving
skd_request_fn() calls out of the skd_isr() interrupt.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2017-08-17 13:13:22 -07:00 committed by Jens Axboe
parent 3d17a679d3
commit 8fe700650e
1 changed files with 5 additions and 5 deletions
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10
drivers/block/skd_main.c
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@ -2806,7 +2806,7 @@ static void skd_completion_worker(struct work_struct *work)
* process everything in compq
*/
skd_isr_completion_posted(skdev, 0, &flush_enqueued);
skd_request_fn(skdev->queue);
blk_run_queue_async(skdev->queue);
spin_unlock_irqrestore(&skdev->lock, flags);
}
@ -2882,12 +2882,12 @@ skd_isr(int irq, void *ptr)
}
if (unlikely(flush_enqueued))
skd_request_fn(skdev->queue);
blk_run_queue_async(skdev->queue);
if (deferred)
schedule_work(&skdev->completion_worker);
else if (!flush_enqueued)
skd_request_fn(skdev->queue);
blk_run_queue_async(skdev->queue);
spin_unlock(&skdev->lock);
@ -3588,12 +3588,12 @@ static irqreturn_t skd_comp_q(int irq, void *skd_host_data)
deferred = skd_isr_completion_posted(skdev, skd_isr_comp_limit,
&flush_enqueued);
if (flush_enqueued)
skd_request_fn(skdev->queue);
blk_run_queue_async(skdev->queue);
if (deferred)
schedule_work(&skdev->completion_worker);
else if (!flush_enqueued)
skd_request_fn(skdev->queue);
blk_run_queue_async(skdev->queue);
spin_unlock_irqrestore(&skdev->lock, flags);