One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct virtio_scsi {
...
struct virtio_scsi_vq req_vqs[];
};
Make use
On Wed, Jun 19, 2019 at 11:04:16AM +0200, Gerd Hoffmann wrote:
> Use gem reservation helpers and direct reservation_object_* calls
> instead of ttm.
>
> v3: Also attach the array of gem objects to the virtio command buffer,
> so we can drop the object references in the completion callback.
On Wed, Jun 19, 2019 at 11:04:14AM +0200, Gerd Hoffmann wrote:
> All callers pass no_wait = false.
>
> Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
> ---
> drivers/gpu/drm/virtio/virtgpu_drv.h | 5 ++---
> drivers/gpu/drm/virtio/virtgpu_gem.c | 4 ++--
>
Hi Gerd,
On 2019/06/19, Gerd Hoffmann wrote:
> -static void virtio_gpu_init_ttm_placement(struct virtio_gpu_object *vgbo)
> +static const struct drm_gem_object_funcs v3d_gem_funcs = {
s/v3d/virtio/g
Doubt I'll have the time for a proper review - just this and the 1/12 nits :-\
HTH
Emil
On 19/06/19 09:52, Dongli Zhang wrote:
> The 'affinity_hint_set' is not used any longer since
> commit 0d9f0a52c8b9 ("virtio_scsi: use virtio IRQ affinity").
>
> Signed-off-by: Dongli Zhang
> ---
> drivers/scsi/virtio_scsi.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git
On Wed, Jun 19, 2019 at 11:04:15AM +0200, Gerd Hoffmann wrote:
> Call reservation_object_* directly instead
> of using ttm_bo_{reserve,unreserve}.
>
> v3: check for EINTR too.
>
> Signed-off-by: Gerd Hoffmann
> Reviewed-by: Daniel Vetter
> ---
> drivers/gpu/drm/virtio/virtgpu_drv.h | 6 +++---
With this gem and ttm will use the same reservation object,
so mixing and matching ttm / gem reservation helpers should
work fine.
Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
---
drivers/gpu/drm/virtio/virtgpu_object.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff
Thin wrapper around virtio_gpu_object_create(),
but calling that directly works equally well.
Signed-off-by: Gerd Hoffmann
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 4
drivers/gpu/drm/virtio/virtgpu_gem.c | 23 ---
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 6
No need to do the reservation dance,
we can just wait on the fence directly.
Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 13 +++--
1 file changed, 3 insertions(+), 10 deletions(-)
diff --git
All callers pass no_wait = false.
Signed-off-by: Gerd Hoffmann
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 5 ++---
drivers/gpu/drm/virtio/virtgpu_gem.c | 4 ++--
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 4 ++--
3 files changed, 6 insertions(+), 7 deletions(-)
diff --git
virtio-gpu basically needs a sg_table for the bo, to tell the host where
the backing pages for the object are. So the gem shmem helpers are a
perfect fit. Some drm_gem_object_funcs need thin wrappers to update the
host state, but otherwise the helpers handle everything just fine.
Once the
Call reservation_object_* directly instead
of using ttm_bo_{reserve,unreserve}.
v3: check for EINTR too.
Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git
Use gem reservation helpers and direct reservation_object_* calls
instead of ttm.
v3: Due to using the gem reservation object it is initialized and ready
for use before calling ttm_bo_init, so we can also drop the tricky fence
logic which checks whenever the command is in flight still. We can
Use gem reservation helpers and direct reservation_object_* calls
instead of ttm.
v3: Also attach the array of gem objects to the virtio command buffer,
so we can drop the object references in the completion callback. Needed
because ttm fence helpers grab a reference for us, but gem helpers
Use drm_gem_reservation_object_wait() in virtio_gpu_wait_ioctl().
This also makes the ioctl run lockless.
v2: use reservation_object_test_signaled_rcu for VIRTGPU_WAIT_NOWAIT.
Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
---
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 24
No users left.
Signed-off-by: Gerd Hoffmann
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 3 --
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 39 --
2 files changed, 42 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
No users left.
Signed-off-by: Gerd Hoffmann
Reviewed-by: Daniel Vetter
---
drivers/gpu/drm/virtio/virtgpu_drv.h| 1 -
drivers/gpu/drm/virtio/virtgpu_object.c | 13 -
2 files changed, 14 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
The 'affinity_hint_set' is not used any longer since
commit 0d9f0a52c8b9 ("virtio_scsi: use virtio IRQ affinity").
Signed-off-by: Dongli Zhang
---
drivers/scsi/virtio_scsi.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index
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