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virtio: add names to virtqueue struct, mapping from devices to queues.

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Add a linked list of all virtqueues for a virtio device: this helps for
debugging and is also needed for upcoming interface change.

Also, add a "name" field for clearer debug messages.

Signed-off-by: Rusty Russell <[email protected]>
This commit is contained in:
Rusty Russell 2009-06-12 22:16:35 -06:00
commit 9499f5e7ed
14 changed files with 56 additions and 31 deletions
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5
drivers/lguest/lguest_device.c
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@ -228,7 +228,8 @@ extern void lguest_setup_irq(unsigned int irq);
* function. */
static struct virtqueue *lg_find_vq(struct virtio_device *vdev,
unsigned index,
void (*callback)(struct virtqueue *vq))
void (*callback)(struct virtqueue *vq),
const char *name)
{
struct lguest_device *ldev = to_lgdev(vdev);
struct lguest_vq_info *lvq;
@ -263,7 +264,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev,
/* OK, tell virtio_ring.c to set up a virtqueue now we know its size
* and we've got a pointer to its pages. */
vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN,
vdev, lvq->pages, lg_notify, callback);
vdev, lvq->pages, lg_notify, callback, name);
if (!vq) {
err = -ENOMEM;
goto unmap;