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Subject[RFC V7 PATCH 7/7] vhost_net: add interrupt coalescing support
Date
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/vhost/net.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 7d137a4..5ee28b7 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -320,6 +320,9 @@ static void handle_tx(struct vhost_net *net)
hdr_size = nvq->vhost_hlen;
zcopy = nvq->ubufs;

+ /* Finish pending interrupts first */
+ vhost_check_coalesce_and_signal(vq->dev, vq, false);
+
for (;;) {
/* Release DMAs done buffers first */
if (zcopy)
@@ -415,6 +418,7 @@ static void handle_tx(struct vhost_net *net)
}
}
out:
+ vhost_check_coalesce_and_signal(vq->dev, vq, true);
mutex_unlock(&vq->mutex);
}

@@ -554,6 +558,9 @@ static void handle_rx(struct vhost_net *net)
vq->log : NULL;
mergeable = vhost_has_feature(vq, VIRTIO_NET_F_MRG_RXBUF);

+ /* Finish pending interrupts first */
+ vhost_check_coalesce_and_signal(vq->dev, vq, false);
+
while ((sock_len = peek_head_len(sock->sk))) {
sock_len += sock_hlen;
vhost_len = sock_len + vhost_hlen;
@@ -638,6 +645,7 @@ static void handle_rx(struct vhost_net *net)
}
}
out:
+ vhost_check_coalesce_and_signal(vq->dev, vq, true);
mutex_unlock(&vq->mutex);
}

--
1.8.3.1


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