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balloon: drop old stats code & API

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Next commit will re-enable balloon stats with a different interface, but
this old code conflicts with it. Let's drop it.

It's important to note that the QMP and HMP interfaces are also dropped
by this commit. That shouldn't be a problem though, because:

 1. All QMP fields are optional
 2. This feature has always been disabled

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Luiz Capitulino 2012-12-03 15:56:41 -02:00
parent 58513bde83
commit 01ceb97e7b
4 changed files with 2 additions and 79 deletions
Download patch file Download diff file Expand all files Collapse all files

24
hw/virtio-balloon.c
View file

@ -164,28 +164,6 @@ static uint32_t virtio_balloon_get_features(VirtIODevice *vdev, uint32_t f)
static void virtio_balloon_stat(void *opaque, BalloonInfo *info)
{
VirtIOBalloon *dev = opaque;
#if 0
/* Disable guest-provided stats for now. For more details please check:
* https://bugzilla.redhat.com/show_bug.cgi?id=623903
*
* If you do enable it (which is probably not going to happen as we
* need a new command for it), remember that you also need to fill the
* appropriate members of the BalloonInfo structure so that the stats
* are returned to the client.
*/
if (dev->vdev.guest_features & (1 << VIRTIO_BALLOON_F_STATS_VQ)) {
virtqueue_push(dev->svq, &dev->stats_vq_elem, dev->stats_vq_offset);
virtio_notify(&dev->vdev, dev->svq);
return;
}
#endif
/* Stats are not supported. Clear out any stale values that might
* have been set by a more featureful guest kernel.
*/
reset_stats(dev);
info->actual = ram_size - ((uint64_t) dev->actual <<
VIRTIO_BALLOON_PFN_SHIFT);
}
@ -255,8 +233,6 @@ VirtIODevice *virtio_balloon_init(DeviceState *dev)
s->dvq = virtio_add_queue(&s->vdev, 128, virtio_balloon_handle_output);
s->svq = virtio_add_queue(&s->vdev, 128, virtio_balloon_receive_stats);
reset_stats(s);
s->qdev = dev;
register_savevm(dev, "virtio-balloon", -1, 1,
virtio_balloon_save, virtio_balloon_load, s);