On Wed, Apr 12, 2017 at 3:11 PM, Eric Anholt <eric@xxxxxxxxxx> wrote:
> Without this, polling on the dma-buf (and presumably other devices
> synchronizing against our rendering) would return immediately, even
> while the BO was busy.
>
> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Cc: Rob Clark <robdclark@xxxxxxxxx>
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Cc: freedreno@xxxxxxxxxxxxxxxxxxxxx
Reviewed-by: Rob Clark <robdclark@xxxxxxxxx>
(go ahead and push via drm-misc with the rest of the series, if you
haven't already)
> ---
> drivers/gpu/drm/msm/msm_drv.c | 1 +
> drivers/gpu/drm/msm/msm_drv.h | 1 +
> drivers/gpu/drm/msm/msm_gem_prime.c | 7 +++++++
> 3 files changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index 9208e67be453..fe728a134e16 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -829,6 +829,7 @@ static struct drm_driver msm_driver = {
> .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> .gem_prime_export = drm_gem_prime_export,
> .gem_prime_import = drm_gem_prime_import,
> + .gem_prime_res_obj = msm_gem_prime_res_obj,
> .gem_prime_pin = msm_gem_prime_pin,
> .gem_prime_unpin = msm_gem_prime_unpin,
> .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
> diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
> index b885c3d5ae4d..5e67fa66d483 100644
> --- a/drivers/gpu/drm/msm/msm_drv.h
> +++ b/drivers/gpu/drm/msm/msm_drv.h
> @@ -223,6 +223,7 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj);
> void *msm_gem_prime_vmap(struct drm_gem_object *obj);
> void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
> int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
> +struct reservation_object *msm_gem_prime_res_obj(struct drm_gem_object *obj);
> struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev,
> struct dma_buf_attachment *attach, struct sg_table *sg);
> int msm_gem_prime_pin(struct drm_gem_object *obj);
> diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c
> index 60bb290700ce..13403c6da6c7 100644
> --- a/drivers/gpu/drm/msm/msm_gem_prime.c
> +++ b/drivers/gpu/drm/msm/msm_gem_prime.c
> @@ -70,3 +70,10 @@ void msm_gem_prime_unpin(struct drm_gem_object *obj)
> if (!obj->import_attach)
> msm_gem_put_pages(obj);
> }
> +
> +struct reservation_object *msm_gem_prime_res_obj(struct drm_gem_object *obj)
> +{
> + struct msm_gem_object *msm_obj = to_msm_bo(obj);
> +
> + return msm_obj->resv;
> +}
> --
> 2.11.0
>