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| author | James Morris <jmorris@namei.org> | 2011-11-16 12:39:48 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-11-16 12:39:48 +1100 |
| commit | 24942c8e5cc8696064ee207ff29d4cf21f70dafc (patch) | |
| tree | 08a8221eb72ec3da7746d7d76f6f5915ce77cde7 /drivers/virtio/virtio_ring.c | |
| parent | e163bc8e4a0cd1cdffadb58253f7651201722d56 (diff) | |
| parent | ff0ff78068dd8a962358dbbdafa9d6f24540d3e5 (diff) | |
Merge branch 'master'; commit 'v3.2-rc2' into next
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 68b9136847af..c7a2c208f6ea 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -21,6 +21,7 @@ #include <linux/virtio_config.h> #include <linux/device.h> #include <linux/slab.h> +#include <linux/module.h> /* virtio guest is communicating with a virtual "device" that actually runs on * a host processor. Memory barriers are used to control SMP effects. */ @@ -529,4 +530,14 @@ void vring_transport_features(struct virtio_device *vdev) } EXPORT_SYMBOL_GPL(vring_transport_features); +/* return the size of the vring within the virtqueue */ +unsigned int virtqueue_get_vring_size(struct virtqueue *_vq) +{ + + struct vring_virtqueue *vq = to_vvq(_vq); + + return vq->vring.num; +} +EXPORT_SYMBOL_GPL(virtqueue_get_vring_size); + MODULE_LICENSE("GPL"); |