[PATCH] drm/amdgpu: force to use CPU_ACCESS hint optimization

[Christian König]

Am 06.03.19 um 12:52 schrieb Chunming Zhou:
> As we know, visible vram can be placed to invisible when no cpu access.
>
> Signed-off-by: Chunming Zhou <david1.zhou at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 8 +++-----
>   1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index bc62bf41b7e9..823deb66f5da 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -592,8 +592,7 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
>   
>   		vram_gtt.vram_size = adev->gmc.real_vram_size -
>   			atomic64_read(&adev->vram_pin_size);
> -		vram_gtt.vram_cpu_accessible_size = adev->gmc.visible_vram_size -
> -			atomic64_read(&adev->visible_pin_size);
> +		vram_gtt.vram_cpu_accessible_size = vram_gtt.vram_size;

Well, NAK that would of course report the full VRAM as visible which 
isn't correct.

Christian.

>   		vram_gtt.gtt_size = adev->mman.bdev.man[TTM_PL_TT].size;
>   		vram_gtt.gtt_size *= PAGE_SIZE;
>   		vram_gtt.gtt_size -= atomic64_read(&adev->gart_pin_size);
> @@ -612,9 +611,8 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
>   		mem.vram.max_allocation = mem.vram.usable_heap_size * 3 / 4;
>   
>   		mem.cpu_accessible_vram.total_heap_size =
> -			adev->gmc.visible_vram_size;
> -		mem.cpu_accessible_vram.usable_heap_size = adev->gmc.visible_vram_size -
> -			atomic64_read(&adev->visible_pin_size);
> +			mem.vram.total_heap_size;
> +		mem.cpu_accessible_vram.usable_heap_size = mem.vram.usable_heap_size;
>   		mem.cpu_accessible_vram.heap_usage =
>   			amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]);
>   		mem.cpu_accessible_vram.max_allocation =