Displaying 20 results from an estimated 64 matches for "vhost_dev_free_iovec".
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vhost_dev_free_iovecs
2010 Sep 14
1
[PATCH] vhost: max s/g to match qemu
...+
+ if (!dev->vqs[i].indirect || !dev->vqs[i].log ||
+ !dev->vqs[i].heads)
+ goto err_nomem;
+ }
+ return 0;
+err_nomem:
+ for (; i >= 0; --i) {
+ kfree(dev->vqs[i].indirect);
+ kfree(dev->vqs[i].log);
+ kfree(dev->vqs[i].heads);
+ }
+ return -ENOMEM;
+}
+
+static void vhost_dev_free_iovecs(struct vhost_dev *dev)
+{
+ int i;
+ for (i = 0; i < dev->nvqs; ++i) {
+ kfree(dev->vqs[i].indirect);
+ dev->vqs[i].indirect = NULL;
+ kfree(dev->vqs[i].log);
+ dev->vqs[i].log = NULL;
+ kfree(dev->vqs[i].heads);
+ dev->vqs[i].heads = NULL;
+ }
+}
+
long vhost_dev_in...
2010 Sep 14
1
[PATCH] vhost: max s/g to match qemu
...+
+ if (!dev->vqs[i].indirect || !dev->vqs[i].log ||
+ !dev->vqs[i].heads)
+ goto err_nomem;
+ }
+ return 0;
+err_nomem:
+ for (; i >= 0; --i) {
+ kfree(dev->vqs[i].indirect);
+ kfree(dev->vqs[i].log);
+ kfree(dev->vqs[i].heads);
+ }
+ return -ENOMEM;
+}
+
+static void vhost_dev_free_iovecs(struct vhost_dev *dev)
+{
+ int i;
+ for (i = 0; i < dev->nvqs; ++i) {
+ kfree(dev->vqs[i].indirect);
+ dev->vqs[i].indirect = NULL;
+ kfree(dev->vqs[i].log);
+ dev->vqs[i].log = NULL;
+ kfree(dev->vqs[i].heads);
+ dev->vqs[i].heads = NULL;
+ }
+}
+
long vhost_dev_in...
2019 Mar 06
1
[RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area
...+++++++++++++++++------------------
> 1 file changed, 28 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 2025543..1015464 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
> vhost_vq_free_iovecs(dev->vqs[i]);
> }
>
> +static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
Nit: Any reason not to make `num` unsigned or size_t?
> +{
> + size_t event = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 :...
2019 Mar 06
1
[RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area
...+++++++++++++++++------------------
> 1 file changed, 28 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 2025543..1015464 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
> vhost_vq_free_iovecs(dev->vqs[i]);
> }
>
> +static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
Nit: Any reason not to make `num` unsigned or size_t?
> +{
> + size_t event = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 :...
2020 Aug 04
3
[PATCH V5 1/6] vhost: introduce vhost_vring_call
...->call_ctx)
>>> - eventfd_ctx_put(dev->vqs[i]->call_ctx);
>>> +??????? if (dev->vqs[i]->call_ctx.ctx)
>>> + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
>>> ????????? vhost_vq_reset(dev, dev->vqs[i]);
>>> ????? }
>>> ????? vhost_dev_free_iovecs(dev);
>>> @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev *d,
>>> unsigned int ioctl, void __user *arg
>>> ????????????? r = PTR_ERR(ctx);
>>> ????????????? break;
>>> ????????? }
>>> -??????? swap(ctx, vq->call_ctx);
>>...
2020 Aug 04
3
[PATCH V5 1/6] vhost: introduce vhost_vring_call
...->call_ctx)
>>> - eventfd_ctx_put(dev->vqs[i]->call_ctx);
>>> +??????? if (dev->vqs[i]->call_ctx.ctx)
>>> + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
>>> ????????? vhost_vq_reset(dev, dev->vqs[i]);
>>> ????? }
>>> ????? vhost_dev_free_iovecs(dev);
>>> @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev *d,
>>> unsigned int ioctl, void __user *arg
>>> ????????????? r = PTR_ERR(ctx);
>>> ????????????? break;
>>> ????????? }
>>> -??????? swap(ctx, vq->call_ctx);
>>...
2019 Mar 07
0
[RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area
...--------
>> 1 file changed, 28 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
>> index 2025543..1015464 100644
>> --- a/drivers/vhost/vhost.c
>> +++ b/drivers/vhost/vhost.c
>> @@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
>> vhost_vq_free_iovecs(dev->vqs[i]);
>> }
>>
>> +static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
> Nit: Any reason not to make `num` unsigned or size_t?
>
Let me use unsigned int to match the definition of vq->n...
2019 Sep 23
0
[PATCH] vhost: It's better to use size_t for the 3rd parameter of vhost_exceeds_weight()
...; drivers/vhost/vhost.h | 7 ++++---
> 2 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 36ca2cf..159223a 100644
> --- a/drivers/vhost/vhost.c
> +++ b/drivers/vhost/vhost.c
> @@ -412,7 +412,7 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
> }
>
> bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
> - int pkts, int total_len)
> + int pkts, size_t total_len)
> {
> struct vhost_dev *dev = vq->dev;
>
> @@ -454,7 +454,7 @@ static size_t vhost_get_desc_size(struct v...
2019 Mar 06
0
[RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area
...ers/vhost/vhost.c | 46 ++++++++++++++++++++++++++++------------------
1 file changed, 28 insertions(+), 18 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 2025543..1015464 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
vhost_vq_free_iovecs(dev->vqs[i]);
}
+static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
+{
+ size_t event = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
+
+ return sizeof(*vq->avail) +
+ sizeof(*vq->avail->ring) * num...
2018 Dec 28
0
[RFC PATCH V2 3/3] vhost: access vq metadata through kernel virtual address
...-520,7 +578,14 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
if (err)
goto err_cgroup;
+ dev->mmu_notifier.ops = &vhost_mmu_notifier_ops;
+ err = mmu_notifier_register(&dev->mmu_notifier, dev->mm);
+ if (err)
+ goto err_mmu_notifier;
+
return 0;
+err_mmu_notifier:
+ vhost_dev_free_iovecs(dev);
err_cgroup:
kthread_stop(worker);
dev->worker = NULL;
@@ -611,6 +676,87 @@ static void vhost_clear_msg(struct vhost_dev *dev)
spin_unlock(&dev->iotlb_lock);
}
+static int vhost_init_vmap(struct vhost_vmap *map, unsigned long uaddr,
+ size_t size, int write)
+{
+ stru...
2019 Mar 07
0
[RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area
...------
>> 1 file changed, 28 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
>> index 2025543..1015464 100644
>> --- a/drivers/vhost/vhost.c
>> +++ b/drivers/vhost/vhost.c
>> @@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
>> vhost_vq_free_iovecs(dev->vqs[i]);
>> }
>>
>> +static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
>> +{
>> + size_t event = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
>>...
2019 Sep 25
0
[PATCH] vhost: It's better to use size_t for the 3rd parameter of vhost_exceeds_weight()
...++++---
>> 2 files changed, 6 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index
>> 36ca2cf..159223a 100644
>> --- a/drivers/vhost/vhost.c
>> +++ b/drivers/vhost/vhost.c
>> @@ -412,7 +412,7 @@ static void vhost_dev_free_iovecs(struct vhost_dev
>> *dev) }
>>
>> bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
>> - int pkts, int total_len)
>> + int pkts, size_t total_len)
>> {
>> struct vhost_dev *dev = vq->dev;
>>
>> @@ -454,7 +454,7 @@ s...
2019 Jun 06
2
[PATCH] vhost: Don't use defined in VHOST_ARCH_CAN_ACCEL_UACCESS definition
...AN_ACCEL_UACCESS
err = mmu_notifier_register(&dev->mmu_notifier, dev->mm);
if (err)
goto err_mmu_notifier;
@@ -734,7 +734,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
return 0;
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
+#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS
err_mmu_notifier:
vhost_dev_free_iovecs(dev);
#endif
@@ -828,7 +828,7 @@ static void vhost_clear_msg(struct vhost_dev *dev)
spin_unlock(&dev->iotlb_lock);
}
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
+#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS
static void vhost_setup_uaddr(struct vhost_virtqueue *vq,
int index, unsigned long uad...
2019 Jun 06
2
[PATCH] vhost: Don't use defined in VHOST_ARCH_CAN_ACCEL_UACCESS definition
...AN_ACCEL_UACCESS
err = mmu_notifier_register(&dev->mmu_notifier, dev->mm);
if (err)
goto err_mmu_notifier;
@@ -734,7 +734,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev)
return 0;
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
+#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS
err_mmu_notifier:
vhost_dev_free_iovecs(dev);
#endif
@@ -828,7 +828,7 @@ static void vhost_clear_msg(struct vhost_dev *dev)
spin_unlock(&dev->iotlb_lock);
}
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
+#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS
static void vhost_setup_uaddr(struct vhost_virtqueue *vq,
int index, unsigned long uad...
2020 Aug 04
0
[PATCH V5 1/6] vhost: introduce vhost_vring_call
...fput(dev->vqs[i]->kick);
> - if (dev->vqs[i]->call_ctx)
> - eventfd_ctx_put(dev->vqs[i]->call_ctx);
> + if (dev->vqs[i]->call_ctx.ctx)
> + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
> vhost_vq_reset(dev, dev->vqs[i]);
> }
> vhost_dev_free_iovecs(dev);
> @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg
> r = PTR_ERR(ctx);
> break;
> }
> - swap(ctx, vq->call_ctx);
> +
> + spin_lock(&vq->call_ctx.ctx_lock);
> + swap(ctx, vq->call_ctx....
2020 Jul 17
0
[PATCH V2 1/6] vhost: introduce vhost_call_ctx
...fput(dev->vqs[i]->kick);
> - if (dev->vqs[i]->call_ctx)
> - eventfd_ctx_put(dev->vqs[i]->call_ctx);
> + if (dev->vqs[i]->call_ctx.ctx)
> + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
> vhost_vq_reset(dev, dev->vqs[i]);
> }
> vhost_dev_free_iovecs(dev);
> @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg
> r = PTR_ERR(ctx);
> break;
> }
> - swap(ctx, vq->call_ctx);
> +
> + spin_lock(&vq->call_ctx.ctx_lock);
> + swap(ctx, vq->call_ctx....
2020 Jul 22
0
[PATCH V3 1/6] vhost: introduce vhost_vring_call
...fput(dev->vqs[i]->kick);
> - if (dev->vqs[i]->call_ctx)
> - eventfd_ctx_put(dev->vqs[i]->call_ctx);
> + if (dev->vqs[i]->call_ctx.ctx)
> + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
> vhost_vq_reset(dev, dev->vqs[i]);
> }
> vhost_dev_free_iovecs(dev);
> @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg
> r = PTR_ERR(ctx);
> break;
> }
> - swap(ctx, vq->call_ctx);
> +
> + spin_lock(&vq->call_ctx.ctx_lock);
> + swap(ctx, vq->call_ctx....
2020 Aug 04
0
[PATCH V5 1/6] vhost: introduce vhost_vring_call
...fd_ctx_put(dev->vqs[i]->call_ctx);
> > > > +??????? if (dev->vqs[i]->call_ctx.ctx)
> > > > + eventfd_ctx_put(dev->vqs[i]->call_ctx.ctx);
> > > > ????????? vhost_vq_reset(dev, dev->vqs[i]);
> > > > ????? }
> > > > ????? vhost_dev_free_iovecs(dev);
> > > > @@ -1629,7 +1636,10 @@ long vhost_vring_ioctl(struct vhost_dev
> > > > *d, unsigned int ioctl, void __user *arg
> > > > ????????????? r = PTR_ERR(ctx);
> > > > ????????????? break;
> > > > ????????? }
> > > > -??...
2019 May 17
0
[PATCH V2 1/4] vhost: introduce vhost_exceeds_weight()
...s->dev, vqs, VHOST_SCSI_MAX_VQ, UIO_MAXIOV,
+ VHOST_SCSI_WEIGHT, 0);
vhost_scsi_init_inflight(vs, NULL);
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 351af88..290d6e5 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -413,8 +413,24 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
vhost_vq_free_iovecs(dev->vqs[i]);
}
+bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
+ int pkts, int total_len)
+{
+ struct vhost_dev *dev = vq->dev;
+
+ if ((dev->byte_weight && total_len >= dev->byte_weight) ||
+ pkts >= dev-&...
2019 Mar 06
12
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
This series tries to access virtqueue metadata through kernel virtual
address instead of copy_user() friends since they had too much
overheads like checks, spec barriers or even hardware feature
toggling. This is done through setup kernel address through vmap() and
resigter MMU notifier for invalidation.
Test shows about 24% improvement on TX PPS. TCP_STREAM doesn't see
obvious improvement.