search for: 1015464

...gt; > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/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) Nit: A...

...gt; > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/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) Nit: A...

...y: Jason Wang<jasowang at redhat.com> >> --- >> drivers/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_virt...

Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/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(v...

...n ? Nope, will add the log. Thanks >> --- >> drivers/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(...

On 04/11/2011 06:24 PM, Reid Kleckner wrote: > That should work perfectly fine. The LLVM JIT has support for > declaring and calling out to native functions in the application > through libffi. How about support for a custom memory model? I know this sounds odd, but basically the variables need to map to a specific block of memory: the global heap. The enclosing program uses memcpy to

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.

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.

...unlock(&vq->mutex); } @@ -1250,6 +1251,7 @@ static void handle_rx(struct vhost_net *net) vhost_net_enable_vq(net, vq); out: vhost_net_signal_used(nvq); + vq_meta_prefetch_done(vq); mutex_unlock(&vq->mutex); } diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 1015464..36ccf7c 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -434,6 +434,74 @@ static size_t vhost_get_desc_size(struct vhost_virtqueue *vq, int num) return sizeof(*vq->desc) * num; } +static void vhost_uninit_vmap(struct vhost_vmap *map) +{ + if (map->addr) { + vunmap(map...

...1,7 @@ static void handle_rx(struct vhost_net *net) > vhost_net_enable_vq(net, vq); > out: > vhost_net_signal_used(nvq); > + vq_meta_prefetch_done(vq); > mutex_unlock(&vq->mutex); > } > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index 1015464..36ccf7c 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -434,6 +434,74 @@ static size_t vhost_get_desc_size(struct vhost_virtqueue *vq, int num) > return sizeof(*vq->desc) * num; > } > > +static void vhost_uninit_vmap(struct vhost_vmap *map) &gt...

...1,7 @@ static void handle_rx(struct vhost_net *net) > vhost_net_enable_vq(net, vq); > out: > vhost_net_signal_used(nvq); > + vq_meta_prefetch_done(vq); > mutex_unlock(&vq->mutex); > } > > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index 1015464..36ccf7c 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -434,6 +434,74 @@ static size_t vhost_get_desc_size(struct vhost_virtqueue *vq, int num) > return sizeof(*vq->desc) * num; > } > > +static void vhost_uninit_vmap(struct vhost_vmap *map) &gt...