shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-04 18:19:28 +09:00
Code Issues Packages Projects Releases Wiki Activity

vhost_net: introduce vhost_exceeds_weight()

Browse Source 
commit 272f35cba5 upstream.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Balbir Singh <sblbir@amzn.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jason Wang
2018-07-20 08:15:15 +08:00
committed by Greg Kroah-Hartman
parent e9dac4ca99
commit 2c4e518f1e
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/vhost/net.c
View File

@@ -446,6 +446,12 @@ static bool vhost_exceeds_maxpend(struct vhost_net *net)
== nvq->done_idx;
}
static bool vhost_exceeds_weight(int pkts, int total_len)
{
return total_len >= VHOST_NET_WEIGHT ||
pkts >= VHOST_NET_PKT_WEIGHT;
}
/* Expects to be always run from workqueue - which acts as
* read-size critical section for our kind of RCU. */
static void handle_tx(struct vhost_net *net)
@@ -550,7 +556,6 @@ static void handle_tx(struct vhost_net *net)
msg.msg_control = NULL;
ubufs = NULL;
}
total_len += len;
if (total_len < VHOST_NET_WEIGHT &&
!vhost_vq_avail_empty(&net->dev, vq) &&
@@ -579,8 +584,7 @@ static void handle_tx(struct vhost_net *net)
else
vhost_zerocopy_signal_used(net, vq);
vhost_net_tx_packet(net);
if (unlikely(total_len >= VHOST_NET_WEIGHT) ||
unlikely(++sent_pkts >= VHOST_NET_PKT_WEIGHT)) {
if (unlikely(vhost_exceeds_weight(++sent_pkts, total_len))) {
vhost_poll_queue(&vq->poll);
break;
}
@@ -863,8 +867,7 @@ static void handle_rx(struct vhost_net *net)
vhost_log_write(vq, vq_log, log, vhost_len,
vq->iov, in);
total_len += vhost_len;
if (unlikely(total_len >= VHOST_NET_WEIGHT) ||
unlikely(++recv_pkts >= VHOST_NET_PKT_WEIGHT)) {
if (unlikely(vhost_exceeds_weight(++recv_pkts, total_len))) {
vhost_poll_queue(&vq->poll);
goto out;
}