[RFC V7 PATCH 7/7] vhost_net: add interrupt coalescing support
STALE4146d
From: Jason Wang <hidden>
Date: 2015-05-25 05:24:39
Also in:
lkml
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
Revision v7 of 2 in this series.
Revisions (2)
- v7 [diff vs current]
- v7 current
Signed-off-by: Jason Wang <redacted> --- 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