From: "Michael S. Tsirkin" <mst@redhat.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [PATCH] vhost-net: initialize zcopy packet counters
Date: Mon, 3 Dec 2012 19:31:51 +0200 [thread overview]
Message-ID: <20121203173151.GA30949@redhat.com> (raw)
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@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
next reply other threads:[~2012-12-03 17:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-03 17:31 Michael S. Tsirkin [this message]
2012-12-03 18:42 ` [PATCH] vhost-net: initialize zcopy packet counters David Miller
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