Re: [PATCH v5 3/4] drm/panthor: enable fdinfo for memory stats

[Boris Brezillon <boris.brezillon@collabora.com>]

On Tue,  3 Sep 2024 21:25:37 +0100
Adrián Larumbe <adrian.larumbe@collabora.com> wrote:

> Implement drm object's status callback.
> 
> Also, we consider a PRIME imported BO to be resident if its matching
> dma_buf has an open attachment, which means its backing storage had already
> been allocated.
> 
> Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>

> ---
>  drivers/gpu/drm/panthor/panthor_gem.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/panthor/panthor_gem.c
> index 38f560864879..c60b599665d8 100644
> --- a/drivers/gpu/drm/panthor/panthor_gem.c
> +++ b/drivers/gpu/drm/panthor/panthor_gem.c
> @@ -145,6 +145,17 @@ panthor_gem_prime_export(struct drm_gem_object *obj, int flags)
>  	return drm_gem_prime_export(obj, flags);
>  }
>  
> +static enum drm_gem_object_status panthor_gem_status(struct drm_gem_object *obj)
> +{
> +	struct panthor_gem_object *bo = to_panthor_bo(obj);
> +	enum drm_gem_object_status res = 0;
> +
> +	if (bo->base.base.import_attach || bo->base.pages)
> +		res |= DRM_GEM_OBJECT_RESIDENT;
> +
> +	return res;
> +}
> +
>  static const struct drm_gem_object_funcs panthor_gem_funcs = {
>  	.free = panthor_gem_free_object,
>  	.print_info = drm_gem_shmem_object_print_info,
> @@ -154,6 +165,7 @@ static const struct drm_gem_object_funcs panthor_gem_funcs = {
>  	.vmap = drm_gem_shmem_object_vmap,
>  	.vunmap = drm_gem_shmem_object_vunmap,
>  	.mmap = panthor_gem_mmap,
> +	.status = panthor_gem_status,
>  	.export = panthor_gem_prime_export,
>  	.vm_ops = &drm_gem_shmem_vm_ops,
>  };