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| author | Jason Wang <jasowang@redhat.com> | 2012-08-28 13:54:13 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2012-09-28 15:05:15 +0930 |
| commit | 17bb6d40880d4178f5f8a75900ed8c9ff47d3fb2 (patch) | |
| tree | f9888385b33c144f909eff14713a328dc72296f2 /drivers/virtio/virtio_ring.c | |
| parent | 7a23eb28fa645f1f0c2ec38274c11bc78c50c047 (diff) | |
| download | linux-stable-17bb6d40880d4178f5f8a75900ed8c9ff47d3fb2.tar.gz linux-stable-17bb6d40880d4178f5f8a75900ed8c9ff47d3fb2.tar.bz2 linux-stable-17bb6d40880d4178f5f8a75900ed8c9ff47d3fb2.zip | |
virtio-ring: move queue_index to vring_virtqueue
Instead of storing the queue index in transport-specific virtio structs,
this patch moves them to vring_virtqueue and introduces an helper to get
the value. This lets drivers simplify their management and tracing of
virtqueues.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 5aa43c3392a2..e639584b2dbd 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -106,6 +106,9 @@ struct vring_virtqueue /* How to notify other side. FIXME: commonalize hcalls! */ void (*notify)(struct virtqueue *vq); + /* Index of the queue */ + int queue_index; + #ifdef DEBUG /* They're supposed to lock for us. */ unsigned int in_use; @@ -171,6 +174,13 @@ static int vring_add_indirect(struct vring_virtqueue *vq, return head; } +int virtqueue_get_queue_index(struct virtqueue *_vq) +{ + struct vring_virtqueue *vq = to_vvq(_vq); + return vq->queue_index; +} +EXPORT_SYMBOL_GPL(virtqueue_get_queue_index); + /** * virtqueue_add_buf - expose buffer to other end * @vq: the struct virtqueue we're talking about. @@ -616,7 +626,8 @@ irqreturn_t vring_interrupt(int irq, void *_vq) } EXPORT_SYMBOL_GPL(vring_interrupt); -struct virtqueue *vring_new_virtqueue(unsigned int num, +struct virtqueue *vring_new_virtqueue(unsigned int index, + unsigned int num, unsigned int vring_align, struct virtio_device *vdev, bool weak_barriers, @@ -647,6 +658,7 @@ struct virtqueue *vring_new_virtqueue(unsigned int num, vq->broken = false; vq->last_used_idx = 0; vq->num_added = 0; + vq->queue_index = index; list_add_tail(&vq->vq.list, &vdev->vqs); #ifdef DEBUG vq->in_use = false; |