Michael S. Tsirkin
2012-Dec-03 17:31 UTC
[PATCH] vhost-net: initialize zcopy packet counters
These packet counters are used to drive the zercopy selection heuristic so nothing too bad happens if they are off a bit - and they are also reset once in a while. But it's cleaner to clear them when backend is set so that we start in a known state. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vhost/net.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 67898fa..ff6c9199 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -823,6 +823,9 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd) r = vhost_init_used(vq); if (r) goto err_vq; + + n->tx_packets = 0; + n->tx_zcopy_err = 0; } mutex_unlock(&vq->mutex); -- MST
From: "Michael S. Tsirkin" <mst at redhat.com> Date: Mon, 3 Dec 2012 19:31:51 +0200> These packet counters are used to drive the zercopy > selection heuristic so nothing too bad happens if they are off a bit - > and they are also reset once in a while. > But it's cleaner to clear them when backend is set so that > we start in a known state. > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com>Applied to net-next, thanks.
Apparently Analagous Threads
- [PATCH] vhost-net: initialize zcopy packet counters
- [PATCH 1/2] vhost_net: correct error hanlding in vhost_net_set_backend()
- [PATCH 1/2] vhost_net: correct error hanlding in vhost_net_set_backend()
- [PATCH vhost] vhost_net: Fix too many vring kick on busypoll
- [PATCH] vhost: Move vhost-net zerocopy support fields to net.c