Displaying 20 results from an estimated 200 matches for "vhost_add_used_and_sign".
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vhost_add_used_and_signal
2014 Jul 01
0
[PATCH RFC 2/2] vhost: support urgent descriptors
...);
void vhost_discard_vq_desc(struct vhost_virtqueue *, int n);
int vhost_init_used(struct vhost_virtqueue *);
-int vhost_add_used(struct vhost_virtqueue *, unsigned int head, int len);
-int vhost_add_used_n(struct vhost_virtqueue *, struct vring_used_elem *heads,
- unsigned count);
-void vhost_add_used_and_signal(struct vhost_dev *, struct vhost_virtqueue *,
+int vhost_add_used(struct vhost_virtqueue *, bool urgent,
+ unsigned int head, int len);
+int vhost_add_used_n(struct vhost_virtqueue *, bool urgent,
+ struct vring_used_elem *heads, unsigned count);
+void vhost_add_used_and_signal(struct v...
2014 Jul 01
5
[PATCH RFC 1/2] virtio: support for urgent descriptors
Below should be useful for some experiments Jason is doing.
I thought I'd send it out for early review/feedback.
Compiled-only at this point.
event idx feature allows us to defer interrupts until
a specific # of descriptors were used.
Sometimes it might be useful to get an interrupt after
a specific descriptor, regardless.
This adds a descriptor flag for this, and an API
to create an urgent
2014 Jul 01
5
[PATCH RFC 1/2] virtio: support for urgent descriptors
Below should be useful for some experiments Jason is doing.
I thought I'd send it out for early review/feedback.
Compiled-only at this point.
event idx feature allows us to defer interrupts until
a specific # of descriptors were used.
Sometimes it might be useful to get an interrupt after
a specific descriptor, regardless.
This adds a descriptor flag for this, and an API
to create an urgent
2010 Mar 03
1
[RFC][ PATCH 1/3] vhost-net: support multiple buffer heads in receiver
...discard(vq, 1);
tx_poll_start(net, sock);
break;
}
if (err != len)
pr_err("Truncated TX packet: "
" len %d != %zd\n", err, len);
- vhost_add_used_and_signal(&net->dev, vq, head, 0);
+ vhost_add_used_and_signal(&net->dev, vq, &head, 1);
total_len += len;
if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
vhost_poll_queue(&vq->poll);
@@ -182,12 +181,22 @@...
2010 Mar 03
1
[RFC][ PATCH 1/3] vhost-net: support multiple buffer heads in receiver
...discard(vq, 1);
tx_poll_start(net, sock);
break;
}
if (err != len)
pr_err("Truncated TX packet: "
" len %d != %zd\n", err, len);
- vhost_add_used_and_signal(&net->dev, vq, head, 0);
+ vhost_add_used_and_signal(&net->dev, vq, &head, 1);
total_len += len;
if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
vhost_poll_queue(&vq->poll);
@@ -182,12 +181,22 @@...
2013 Aug 16
2
[PATCH 2/6] vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used()
On Fri, Aug 16, 2013 at 01:16:26PM +0800, Jason Wang wrote:
> Switch to use vhost_add_used_and_signal_n() to avoid multiple calls to
> vhost_add_used_and_signal(). With the patch we will call at most 2 times
> (consider done_idx warp around) compared to N times w/o this patch.
>
> Signed-off-by: Jason Wang <jasowang at redhat.com>
So? Does this help performance then?
> ---...
2013 Aug 16
2
[PATCH 2/6] vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used()
On Fri, Aug 16, 2013 at 01:16:26PM +0800, Jason Wang wrote:
> Switch to use vhost_add_used_and_signal_n() to avoid multiple calls to
> vhost_add_used_and_signal(). With the patch we will call at most 2 times
> (consider done_idx warp around) compared to N times w/o this patch.
>
> Signed-off-by: Jason Wang <jasowang at redhat.com>
So? Does this help performance then?
> ---...
2014 Sep 19
2
[PATCH RFC 2/2] vhost: support urgent descriptors
...gt; return true;
> }
> + vq->urgent = false;
> return !(flags & VRING_AVAIL_F_NO_INTERRUPT);
> }
> old = vq->signalled_used;
> @@ -1468,9 +1475,10 @@ EXPORT_SYMBOL_GPL(vhost_signal);
> /* And here's the combo meal deal. Supersize me! */
> void vhost_add_used_and_signal(struct vhost_dev *dev,
> struct vhost_virtqueue *vq,
> + bool urgent,
> unsigned int head, int len)
> {
> - vhost_add_used(vq, head, len);
> + vhost_add_used(vq, urgent, head, len);
> vhost_signal(dev, vq);
> }
> EXPORT_SYMBOL_GPL(vho...
2014 Sep 19
2
[PATCH RFC 2/2] vhost: support urgent descriptors
...gt; return true;
> }
> + vq->urgent = false;
> return !(flags & VRING_AVAIL_F_NO_INTERRUPT);
> }
> old = vq->signalled_used;
> @@ -1468,9 +1475,10 @@ EXPORT_SYMBOL_GPL(vhost_signal);
> /* And here's the combo meal deal. Supersize me! */
> void vhost_add_used_and_signal(struct vhost_dev *dev,
> struct vhost_virtqueue *vq,
> + bool urgent,
> unsigned int head, int len)
> {
> - vhost_add_used(vq, head, len);
> + vhost_add_used(vq, urgent, head, len);
> vhost_signal(dev, vq);
> }
> EXPORT_SYMBOL_GPL(vho...
2020 Jun 07
0
[PATCH RFC v5 13/13] vhost: drop head based APIs
...int vhost_put_used_n_bufs(struct vhost_virtqueue *vq,
struct vhost_buf *bufs, unsigned count)
{
@@ -2580,26 +2580,6 @@ void vhost_signal(struct vhost_dev *dev, struct vhost_virtqueue *vq)
}
EXPORT_SYMBOL_GPL(vhost_signal);
-/* And here's the combo meal deal. Supersize me! */
-void vhost_add_used_and_signal(struct vhost_dev *dev,
- struct vhost_virtqueue *vq,
- unsigned int head, int len)
-{
- vhost_add_used(vq, head, len);
- vhost_signal(dev, vq);
-}
-EXPORT_SYMBOL_GPL(vhost_add_used_and_signal);
-
-/* multi-buffer version of vhost_add_used_and_signal */
-void vhost_add_used_and_s...
2017 Sep 28
1
[PATCH net-next RFC 5/5] vhost_net: basic tx virtqueue batched processing
...!= %zd\n", err, len);
> + if (!zcopy) {
> + vhost_add_used_idx(vq, 1);
> + vhost_signal(&net->dev, vq);
> + } else if (!zcopy_used) {
> + vhost_add_used_and_signal(&net->dev,
> + vq, head, 0);
While batching, perhaps can also move this producer index update
out of the loop and using vhost_add_used_and_signal_n.
> + } else
> + vhost_z...
2017 Sep 28
1
[PATCH net-next RFC 5/5] vhost_net: basic tx virtqueue batched processing
...!= %zd\n", err, len);
> + if (!zcopy) {
> + vhost_add_used_idx(vq, 1);
> + vhost_signal(&net->dev, vq);
> + } else if (!zcopy_used) {
> + vhost_add_used_and_signal(&net->dev,
> + vq, head, 0);
While batching, perhaps can also move this producer index update
out of the loop and using vhost_add_used_and_signal_n.
> + } else
> + vhost_z...
2013 Sep 02
1
[PATCH V2 2/6] vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used()
On Fri, Aug 30, 2013 at 12:29:18PM +0800, Jason Wang wrote:
> We tend to batch the used adding and signaling in vhost_zerocopy_callback()
> which may result more than 100 used buffers to be updated in
> vhost_zerocopy_signal_used() in some cases. So wwitch to use
switch
> vhost_add_used_and_signal_n() to avoid multiple calls to
> vhost_add_used_and_signal(). Which means much more less times of used index
> updating and memory barriers.
pls put info on perf gain in commit log too
>
> Signed-off-by: Jason Wang <jasowang at redhat.com>
> ---
> drivers/vhost/net.c |...
2013 Sep 02
1
[PATCH V2 2/6] vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used()
On Fri, Aug 30, 2013 at 12:29:18PM +0800, Jason Wang wrote:
> We tend to batch the used adding and signaling in vhost_zerocopy_callback()
> which may result more than 100 used buffers to be updated in
> vhost_zerocopy_signal_used() in some cases. So wwitch to use
switch
> vhost_add_used_and_signal_n() to avoid multiple calls to
> vhost_add_used_and_signal(). Which means much more less times of used index
> updating and memory barriers.
pls put info on perf gain in commit log too
>
> Signed-off-by: Jason Wang <jasowang at redhat.com>
> ---
> drivers/vhost/net.c |...
2020 Jun 02
0
[PATCH RFC 11/13] vhost/scsi: switch to buf APIs
...if (vhost_enable_notify(&vs->dev, vq))
goto again;
vs->vs_events_missed = true;
@@ -488,7 +503,7 @@ vhost_scsi_do_evt_work(struct vhost_scsi *vs, struct vhost_scsi_evt *evt)
eventp = vq->iov[out].iov_base;
ret = __copy_to_user(eventp, event, sizeof(*event));
if (!ret)
- vhost_add_used_and_signal(&vs->dev, vq, head, 0);
+ vhost_scsi_signal_noinput(&vs->dev, vq, &buf);
else
vq_err(vq, "Faulted on vhost_scsi_send_event\n");
}
@@ -549,7 +564,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
ret = copy_to_iter(&v_rsp, sizeof(v_rsp...
2020 Jun 07
0
[PATCH RFC v5 11/13] vhost/scsi: switch to buf APIs
...if (vhost_enable_notify(&vs->dev, vq))
goto again;
vs->vs_events_missed = true;
@@ -488,7 +503,7 @@ vhost_scsi_do_evt_work(struct vhost_scsi *vs, struct vhost_scsi_evt *evt)
eventp = vq->iov[out].iov_base;
ret = __copy_to_user(eventp, event, sizeof(*event));
if (!ret)
- vhost_add_used_and_signal(&vs->dev, vq, head, 0);
+ vhost_scsi_signal_noinput(&vs->dev, vq, &buf);
else
vq_err(vq, "Faulted on vhost_scsi_send_event\n");
}
@@ -549,7 +564,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
ret = copy_to_iter(&v_rsp, sizeof(v_rsp...
2013 Jul 07
2
[PATCH v2 03/11] vhost: Make vhost a separate module
...; > > if (vq->call_ctx && vhost_notify(dev, vq))
> > > eventfd_signal(vq->call_ctx, 1);
> > > }
> > > +EXPORT_SYMBOL_GPL(vhost_signal);
> > >
> > > /* And here's the combo meal deal. Supersize me! */
> > > void vhost_add_used_and_signal(struct vhost_dev *dev,
> > > @@ -1465,6 +1492,7 @@ void vhost_add_used_and_signal(struct vhost_dev *dev,
> > > vhost_add_used(vq, head, len);
> > > vhost_signal(dev, vq);
> > > }
> > > +EXPORT_SYMBOL_GPL(vhost_add_used_and_signal);
> > >...
2013 Jul 07
2
[PATCH v2 03/11] vhost: Make vhost a separate module
...; > > if (vq->call_ctx && vhost_notify(dev, vq))
> > > eventfd_signal(vq->call_ctx, 1);
> > > }
> > > +EXPORT_SYMBOL_GPL(vhost_signal);
> > >
> > > /* And here's the combo meal deal. Supersize me! */
> > > void vhost_add_used_and_signal(struct vhost_dev *dev,
> > > @@ -1465,6 +1492,7 @@ void vhost_add_used_and_signal(struct vhost_dev *dev,
> > > vhost_add_used(vq, head, len);
> > > vhost_signal(dev, vq);
> > > }
> > > +EXPORT_SYMBOL_GPL(vhost_add_used_and_signal);
> > >...
2010 Apr 06
1
[PATCH v3] Add Mergeable receive buffer support to vhost_net
...if (unlikely(err < 0)) {
- vhost_discard_vq_desc(vq);
- tx_poll_start(net, sock);
+ if (err == -EAGAIN) {
+ vhost_discard_desc(vq, 1);
+ tx_poll_start(net, sock);
+ } else {
+ vq_err(vq, "sendmsg: errno %d\n", -err);
+ /* drop packet; do not discard/resend */
+ vhost_add_used_and_signal(&net->dev, vq, head,
+ 0);
+ }
break;
}
if (err != len)
@@ -186,12 +192,25 @@ static void handle_tx(struct vhost_net *
unuse_mm(net->dev.mm);
}
+static int vhost_head_len(struct sock *sk)
+{
+ struct sk_buff *head;
+ int len = 0;
+
+ lock_sock(sk);
+ head = skb_...
2010 Apr 06
1
[PATCH v3] Add Mergeable receive buffer support to vhost_net
...if (unlikely(err < 0)) {
- vhost_discard_vq_desc(vq);
- tx_poll_start(net, sock);
+ if (err == -EAGAIN) {
+ vhost_discard_desc(vq, 1);
+ tx_poll_start(net, sock);
+ } else {
+ vq_err(vq, "sendmsg: errno %d\n", -err);
+ /* drop packet; do not discard/resend */
+ vhost_add_used_and_signal(&net->dev, vq, head,
+ 0);
+ }
break;
}
if (err != len)
@@ -186,12 +192,25 @@ static void handle_tx(struct vhost_net *
unuse_mm(net->dev.mm);
}
+static int vhost_head_len(struct sock *sk)
+{
+ struct sk_buff *head;
+ int len = 0;
+
+ lock_sock(sk);
+ head = skb_...