Linux Virtualization - Jun 2019 - [PATCH v3 07/12] drm/virtio: remove ttm calls from in virtio_gpu_object_{reserve, unreserve}

Call reservation_object_* directly instead
of using ttm_bo_{reserve,unreserve}.

v3: check for EINTR too.

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 06cc0e961df6..77ac69a8e6cc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -402,9 +402,9 @@ static inline int virtio_gpu_object_reserve(struct
virtio_gpu_object *bo)
 {
 	int r;
 
-	r = ttm_bo_reserve(&bo->tbo, true, false, NULL);
+	r = reservation_object_lock_interruptible(bo->gem_base.resv, NULL);
 	if (unlikely(r != 0)) {
-		if (r != -ERESTARTSYS) {
+		if (r != -ERESTARTSYS && r != -EINTR) {
 			struct virtio_gpu_device *qdev  				bo->gem_base.dev->dev_private;
 			dev_err(qdev->dev, "%p reserve failed\n", bo);
@@ -416,7 +416,7 @@ static inline int virtio_gpu_object_reserve(struct
virtio_gpu_object *bo)
 
 static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
 {
-	ttm_bo_unreserve(&bo->tbo);
+	reservation_object_unlock(bo->gem_base.resv);
 }
 
 /* virgl debufs */
-- 
2.18.1

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 <kraxel at redhat.com>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
>  drivers/gpu/drm/virtio/virtgpu_drv.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
> index 06cc0e961df6..77ac69a8e6cc 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_drv.h
> +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
> @@ -402,9 +402,9 @@ static inline int virtio_gpu_object_reserve(struct
virtio_gpu_object *bo)
>  {
>  	int r;
>  
> -	r = ttm_bo_reserve(&bo->tbo, true, false, NULL);
> +	r = reservation_object_lock_interruptible(bo->gem_base.resv, NULL);
>  	if (unlikely(r != 0)) {
> -		if (r != -ERESTARTSYS) {
> +		if (r != -ERESTARTSYS && r != -EINTR) {
You only need to check for EINTR I think. ttm_bo_reserv does the EINVAL ->
ERESTARTSYS remapping.
-Daniel
>  			struct virtio_gpu_device *qdev >  			
bo->gem_base.dev->dev_private;
>  			dev_err(qdev->dev, "%p reserve failed\n", bo);
> @@ -416,7 +416,7 @@ static inline int virtio_gpu_object_reserve(struct
virtio_gpu_object *bo)
>  
>  static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object
*bo)
>  {
> -	ttm_bo_unreserve(&bo->tbo);
> +	reservation_object_unlock(bo->gem_base.resv);
>  }
>  
>  /* virgl debufs */
> -- 
> 2.18.1
> 
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch