Move queue_index from virtio_pci_vq_info to virtqueue. This
allows callback handlers to figure out the queue number for
the vq that needs attention.
Signed-off-by: Krishna Kumar <krkumar2@xxxxxxxxxx>
---
drivers/virtio/virtio_pci.c | 10 +++-------
include/linux/virtio.h | 1 +
2 files changed, 4 insertions(+), 7 deletions(-)
diff -ruNp org/include/linux/virtio.h new.dynamic.optimize_vhost/include/linux/virtio.h
--- org/include/linux/virtio.h 2010-10-11 10:20:22.000000000 +0530
+++ new.dynamic.optimize_vhost/include/linux/virtio.h 2010-10-15 13:25:42.000000000 +0530
@@ -22,6 +22,7 @@ struct virtqueue {
void (*callback)(struct virtqueue *vq);
const char *name;
struct virtio_device *vdev;
+ int queue_index; /* the index of the queue */
void *priv;
};
diff -ruNp org/drivers/virtio/virtio_pci.c new.dynamic.optimize_vhost/drivers/virtio/virtio_pci.c
--- org/drivers/virtio/virtio_pci.c 2010-10-11 10:20:15.000000000 +0530
+++ new.dynamic.optimize_vhost/drivers/virtio/virtio_pci.c 2010-10-15 13:25:42.000000000 +0530
@@ -75,9 +75,6 @@ struct virtio_pci_vq_info
/* the number of entries in the queue */
int num;
- /* the index of the queue */
- int queue_index;
-
/* the virtual address of the ring queue */
void *queue;
@@ -185,11 +182,10 @@ static void vp_reset(struct virtio_devic
static void vp_notify(struct virtqueue *vq)
{
struct virtio_pci_device *vp_dev = to_vp_device(vq->vdev);
- struct virtio_pci_vq_info *info = vq->priv;
/* we write the queue's selector into the notification register to
* signal the other end */
- iowrite16(info->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY);
+ iowrite16(vq->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY);
}
/* Handle a configuration change: Tell driver if it wants to know. */
@@ -385,7 +381,6 @@ static struct virtqueue *setup_vq(struct
if (!info)
return ERR_PTR(-ENOMEM);
- info->queue_index = index;
info->num = num;
info->msix_vector = msix_vec;
@@ -408,6 +403,7 @@ static struct virtqueue *setup_vq(struct
goto out_activate_queue;
}
+ vq->queue_index = index;
vq->priv = info;
info->vq = vq;
@@ -446,7 +442,7 @@ static void vp_del_vq(struct virtqueue *
list_del(&info->node);
spin_unlock_irqrestore(&vp_dev->lock, flags);
- iowrite16(info->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_SEL);
+ iowrite16(vq->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_SEL);
if (vp_dev->msix_enabled) {
iowrite16(VIRTIO_MSI_NO_VECTOR,
--
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