Displaying 20 results from an estimated 51 matches for "rnvq".
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2018 Jul 03
2
[PATCH net-next v4 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...eue *rvq = &net->vqs[VHOST_NET_VQ_RX];
> - struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
> - struct vhost_virtqueue *vq = &nvq->vq;
> - unsigned long uninitialized_var(endtime);
> - int len = peek_head_len(rvq, sk);
> + struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
> + struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
>
> - if (!len && vq->busyloop_timeout) {
> - /* Flush batched heads first */
> - vhost_rx_signal_used(rvq);
> - /* Both tx vq and rx socket were polled...
2018 Jul 03
2
[PATCH net-next v4 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...eue *rvq = &net->vqs[VHOST_NET_VQ_RX];
> - struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
> - struct vhost_virtqueue *vq = &nvq->vq;
> - unsigned long uninitialized_var(endtime);
> - int len = peek_head_len(rvq, sk);
> + struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
> + struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
>
> - if (!len && vq->busyloop_timeout) {
> - /* Flush batched heads first */
> - vhost_rx_signal_used(rvq);
> - /* Both tx vq and rx socket were polled...
2018 Jul 03
1
[PATCH net-next v4 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
>>> - struct vhost_virtqueue *vq = &nvq->vq;
>>> - unsigned long uninitialized_var(endtime);
>>> - int len = peek_head_len(rvq, sk);
>>> + struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
>>> + struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
>>>
>>> - if (!len && vq->busyloop_timeout) {
>>> - /* Flush batched heads first */
>>> - vhost_rx...
2018 Jul 02
5
[PATCH net-next v4 0/4] net: vhost: improve performance when enable busyloop
From: Tonghao Zhang <xiangxia.m.yue at gmail.com>
This patches improve the guest receive and transmit performance.
On the handle_tx side, we poll the sock receive queue at the same time.
handle_rx do that in the same way.
For more performance report, see patch 4.
v3 -> v4:
fix some issues
v2 -> v3:
This patches are splited from previous big patch:
2018 Jul 03
2
[PATCH v2 net-next 4/4] vhost_net: Avoid rx vring kicks during busyloop
...diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> index 791bc8b..b224036 100644
> --- a/drivers/vhost/net.c
> +++ b/drivers/vhost/net.c
> @@ -658,6 +658,7 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
> {
> struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
> struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> + struct vhost_virtqueue *rvq = &rnvq->vq;
> struct vhost_virtqueue *tvq = &tnvq->vq;
> unsigned long uninitialized_var(endtime);
> int len = peek_...
2018 Jul 03
2
[PATCH v2 net-next 4/4] vhost_net: Avoid rx vring kicks during busyloop
...diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> index 791bc8b..b224036 100644
> --- a/drivers/vhost/net.c
> +++ b/drivers/vhost/net.c
> @@ -658,6 +658,7 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
> {
> struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
> struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> + struct vhost_virtqueue *rvq = &rnvq->vq;
> struct vhost_virtqueue *tvq = &tnvq->vq;
> unsigned long uninitialized_var(endtime);
> int len = peek_...
2018 Jul 02
0
[PATCH net-next v4 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...- struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
- struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
- struct vhost_virtqueue *vq = &nvq->vq;
- unsigned long uninitialized_var(endtime);
- int len = peek_head_len(rvq, sk);
+ struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
+ struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
- if (!len && vq->busyloop_timeout) {
- /* Flush batched heads first */
- vhost_rx_signal_used(rvq);
- /* Both tx vq and rx socket were polled here */
- mutex_lock_nested(&a...
2018 Jul 04
0
[PATCH net-next v5 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...- struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
- struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
- struct vhost_virtqueue *vq = &nvq->vq;
- unsigned long uninitialized_var(endtime);
- int len = peek_head_len(rvq, sk);
+ struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
+ struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
- if (!len && vq->busyloop_timeout) {
- /* Flush batched heads first */
- vhost_rx_signal_used(rvq);
- /* Both tx vq and rx socket were polled here */
- mutex_lock_nested(&a...
2018 Jul 03
0
[PATCH net-next v4 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...> > - struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
> > - struct vhost_virtqueue *vq = &nvq->vq;
> > - unsigned long uninitialized_var(endtime);
> > - int len = peek_head_len(rvq, sk);
> > + struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
> > + struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> >
> > - if (!len && vq->busyloop_timeout) {
> > - /* Flush batched heads first */
> > - vhost_rx_signal_used(rv...
2018 Jul 03
11
[PATCH v2 net-next 0/4] vhost_net: Avoid vq kicks during busyloop
Under heavy load vhost tx busypoll tend not to suppress vq kicks, which
causes poor guest tx performance. The detailed scenario is described in
commitlog of patch 2.
Rx seems not to have that serious problem, but for consistency I made a
similar change on rx to avoid rx wakeups (patch 3).
Additionary patch 4 is to avoid rx kicks under heavy load during
busypoll.
Tx performance is greatly improved
2018 Jun 29
5
[PATCH vhost] vhost_net: Fix too many vring kick on busypoll
...tatic int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk)
{
- struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
- struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
- struct vhost_virtqueue *vq = &nvq->vq;
+ struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
+ struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
+ struct vhost_virtqueue *rvq = &rnvq->vq;
+ struct vhost_virtqueue *tvq = &tnvq->vq;
unsigned long uninitialized_var(endtime);
- int len = peek_head_len(rvq, sk);
+ int len...
2018 Jun 29
5
[PATCH vhost] vhost_net: Fix too many vring kick on busypoll
...tatic int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk)
{
- struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
- struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
- struct vhost_virtqueue *vq = &nvq->vq;
+ struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
+ struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
+ struct vhost_virtqueue *rvq = &rnvq->vq;
+ struct vhost_virtqueue *tvq = &tnvq->vq;
unsigned long uninitialized_var(endtime);
- int len = peek_head_len(rvq, sk);
+ int len...
2018 Aug 01
5
[PATCH net-next v7 0/4] net: vhost: improve performance when enable busyloop
From: Tonghao Zhang <xiangxia.m.yue at gmail.com>
This patches improve the guest receive performance.
On the handle_tx side, we poll the sock receive queue
at the same time. handle_rx do that in the same way.
For more performance report, see patch 4.
v6->v7:
fix issue and rebase codes:
1. on tx, busypoll will vhost_net_disable/enable_vq rx vq.
[This is suggested by Toshiaki Makita
2018 Aug 01
2
[PATCH net-next v7 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...net *net, struct sock *sk,
> bool *busyloop_intr)
> {
> @@ -770,41 +849,13 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
> struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> struct vhost_virtqueue *rvq = &rnvq->vq;
> struct vhost_virtqueue *tvq = &tnvq->vq;
> - unsigned long uninitialized_var(endtime);
> int len = peek_head_len(rnvq, sk);
>
> - if (!len && tvq->busyloop_timeout) {
> + if (!len && rvq->busyloop_timeout) {
> /* Flush batched...
2018 Aug 01
2
[PATCH net-next v7 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...net *net, struct sock *sk,
> bool *busyloop_intr)
> {
> @@ -770,41 +849,13 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
> struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> struct vhost_virtqueue *rvq = &rnvq->vq;
> struct vhost_virtqueue *tvq = &tnvq->vq;
> - unsigned long uninitialized_var(endtime);
> int len = peek_head_len(rnvq, sk);
>
> - if (!len && tvq->busyloop_timeout) {
> + if (!len && rvq->busyloop_timeout) {
> /* Flush batched...
2018 Jul 03
0
[PATCH v2 net-next 1/4] vhost_net: Rename local variables in vhost_net_rx_peek_head_len
...tatic int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk)
{
- struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
- struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
- struct vhost_virtqueue *vq = &nvq->vq;
+ struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
+ struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
+ struct vhost_virtqueue *tvq = &tnvq->vq;
unsigned long uninitialized_var(endtime);
- int len = peek_head_len(rvq, sk);
+ int len = peek_head_len(rnvq, sk);
- if (!len &&...
2018 Jul 02
2
[PATCH vhost] vhost_net: Fix too many vring kick on busypoll
...; struct sock *sk)
>> ? {
>> -??? struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
>> -??? struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
>> -??? struct vhost_virtqueue *vq = &nvq->vq;
>> +??? struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
>> +??? struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
>> +??? struct vhost_virtqueue *rvq = &rnvq->vq;
>> +??? struct vhost_virtqueue *tvq = &tnvq->vq;
>
> NIt: I admit the variable name is confusing...
2018 Jul 02
2
[PATCH vhost] vhost_net: Fix too many vring kick on busypoll
...; struct sock *sk)
>> ? {
>> -??? struct vhost_net_virtqueue *rvq = &net->vqs[VHOST_NET_VQ_RX];
>> -??? struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX];
>> -??? struct vhost_virtqueue *vq = &nvq->vq;
>> +??? struct vhost_net_virtqueue *rnvq = &net->vqs[VHOST_NET_VQ_RX];
>> +??? struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
>> +??? struct vhost_virtqueue *rvq = &rnvq->vq;
>> +??? struct vhost_virtqueue *tvq = &tnvq->vq;
>
> NIt: I admit the variable name is confusing...
2018 Jul 21
0
[PATCH net-next v6 3/4] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...l_used(struct vhost_net_virtqueue *nvq)
{
struct vhost_virtqueue *vq = &nvq->vq;
@@ -660,41 +722,13 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
struct vhost_virtqueue *rvq = &rnvq->vq;
struct vhost_virtqueue *tvq = &tnvq->vq;
- unsigned long uninitialized_var(endtime);
int len = peek_head_len(rnvq, sk);
- if (!len && tvq->busyloop_timeout) {
+ if (!len && rvq->busyloop_timeout) {
/* Flush batched heads first */
vhost_rx_signal_used...
2018 Sep 09
0
[PATCH net-next v8 3/7] net: vhost: factor out busy polling logic to vhost_net_busy_poll()
...bool *busyloop_intr)
> > {
> > @@ -770,41 +829,13 @@ static int vhost_net_rx_peek_head_len(struct vhost_net *net, struct sock *sk,
> > struct vhost_net_virtqueue *tnvq = &net->vqs[VHOST_NET_VQ_TX];
> > struct vhost_virtqueue *rvq = &rnvq->vq;
> > struct vhost_virtqueue *tvq = &tnvq->vq;
> > - unsigned long uninitialized_var(endtime);
> > int len = peek_head_len(rnvq, sk);
> >
> > - if (!len && tvq->busyloop_timeout) {
> > + if (!len && rvq->...