[RFC PATCH 1/3] drm/virtio: .release ops for virtgpu fence release

[Dmitry Osipenko]

On 7/13/23 01:44, Dongwon Kim wrote:
> virtio_gpu_fence_release is added to free virtio-gpu-fence
> upon release of dma_fence.
> 
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> Cc: Vivek Kasireddy <vivek.kasireddy at intel.com>
> Signed-off-by: Dongwon Kim <dongwon.kim at intel.com>
> ---
>  drivers/gpu/drm/virtio/virtgpu_fence.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c
> index f28357dbde35..ba659ac2a51d 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_fence.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_fence.c
> @@ -63,12 +63,20 @@ static void virtio_gpu_timeline_value_str(struct dma_fence *f, char *str,
>  		 (u64)atomic64_read(&fence->drv->last_fence_id));
>  }
>  
> +static void virtio_gpu_fence_release(struct dma_fence *f)
> +{
> +	struct virtio_gpu_fence *fence = to_virtio_gpu_fence(f);
> +
> +	kfree(fence);
> +}
> +
>  static const struct dma_fence_ops virtio_gpu_fence_ops = {
>  	.get_driver_name     = virtio_gpu_get_driver_name,
>  	.get_timeline_name   = virtio_gpu_get_timeline_name,
>  	.signaled            = virtio_gpu_fence_signaled,
>  	.fence_value_str     = virtio_gpu_fence_value_str,
>  	.timeline_value_str  = virtio_gpu_timeline_value_str,
> +	.release	     = virtio_gpu_fence_release,
>  };
>  
>  struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev,

This change doesn't do anything practically useful, AFAICT.

-- 
Best regards,
Dmitry