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| author | Christoph Hellwig <hch@lst.de> | 2017-02-05 18:15:25 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-27 20:54:05 +0200 |
| commit | ad71473d9c43725c917fc5a86d54ceb7001ee28c (patch) | |
| tree | fc5a06fd06bf7659fb70f2e2afd77f29c78fbde1 | |
| parent | 73473427bb551686e4b68ecd99bfd27e6635286a (diff) | |
| download | op-kernel-dev-ad71473d9c43725c917fc5a86d54ceb7001ee28c.zip op-kernel-dev-ad71473d9c43725c917fc5a86d54ceb7001ee28c.tar.gz | |
virtio_blk: use virtio IRQ affinity
Use automatic IRQ affinity assignment in the virtio layer if available,
and build the blk-mq queues based on it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | drivers/block/virtio_blk.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index c54118b..1028dfe 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -5,6 +5,7 @@ #include <linux/hdreg.h> #include <linux/module.h> #include <linux/mutex.h> +#include <linux/interrupt.h> #include <linux/virtio.h> #include <linux/virtio_blk.h> #include <linux/scatterlist.h> @@ -12,6 +13,7 @@ #include <scsi/scsi_cmnd.h> #include <linux/idr.h> #include <linux/blk-mq.h> +#include <linux/blk-mq-virtio.h> #include <linux/numa.h> #define PART_BITS 4 @@ -385,6 +387,7 @@ static int init_vq(struct virtio_blk *vblk) struct virtqueue **vqs; unsigned short num_vqs; struct virtio_device *vdev = vblk->vdev; + struct irq_affinity desc = { 0, }; err = virtio_cread_feature(vdev, VIRTIO_BLK_F_MQ, struct virtio_blk_config, num_queues, @@ -412,7 +415,7 @@ static int init_vq(struct virtio_blk *vblk) /* Discover virtqueues and write information to configuration. */ err = vdev->config->find_vqs(vdev, num_vqs, vqs, callbacks, names, - NULL); + &desc); if (err) goto out; @@ -543,10 +546,18 @@ static int virtblk_init_request(void *data, struct request *rq, return 0; } +static int virtblk_map_queues(struct blk_mq_tag_set *set) +{ + struct virtio_blk *vblk = set->driver_data; + + return blk_mq_virtio_map_queues(set, vblk->vdev, 0); +} + static struct blk_mq_ops virtio_mq_ops = { .queue_rq = virtio_queue_rq, .complete = virtblk_request_done, .init_request = virtblk_init_request, + .map_queues = virtblk_map_queues, }; static unsigned int virtblk_queue_depth; |
