On Tue, Jul 3, 2018 at 9:03 PM, Souptick Joarder <jrdr.linux@xxxxxxxxx> wrote:
> The fault handler code is commented since v4.2.
> If there is no plan to enable the fault handler
> code in future, we can remove this dead code.
>
> Signed-off-by: Souptick Joarder <jrdr.linux@xxxxxxxxx>
> ---
> v2: corrected subject line
>
Any further comment on this patch ?
> drivers/gpu/drm/virtio/virtgpu_ttm.c | 36 +-----------------------------------
> 1 file changed, 1 insertion(+), 35 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_ttm.c b/drivers/gpu/drm/virtio/virtgpu_ttm.c
> index 11f8ae5..b6f021c 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_ttm.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_ttm.c
> @@ -106,29 +106,6 @@ static void virtio_gpu_ttm_global_fini(struct virtio_gpu_device *vgdev)
> }
> }
>
> -#if 0
> -/*
> - * Hmm, seems to not do anything useful. Leftover debug hack?
> - * Something like printing pagefaults to kernel log?
> - */
> -static struct vm_operations_struct virtio_gpu_ttm_vm_ops;
> -static const struct vm_operations_struct *ttm_vm_ops;
> -
> -static int virtio_gpu_ttm_fault(struct vm_fault *vmf)
> -{
> - struct ttm_buffer_object *bo;
> - struct virtio_gpu_device *vgdev;
> - int r;
> -
> - bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
> - if (bo == NULL)
> - return VM_FAULT_NOPAGE;
> - vgdev = virtio_gpu_get_vgdev(bo->bdev);
> - r = ttm_vm_ops->fault(vmf);
> - return r;
> -}
> -#endif
> -
> int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma)
> {
> struct drm_file *file_priv;
> @@ -143,19 +120,8 @@ int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma)
> return -EINVAL;
> }
> r = ttm_bo_mmap(filp, vma, &vgdev->mman.bdev);
> -#if 0
> - if (unlikely(r != 0))
> - return r;
> - if (unlikely(ttm_vm_ops == NULL)) {
> - ttm_vm_ops = vma->vm_ops;
> - virtio_gpu_ttm_vm_ops = *ttm_vm_ops;
> - virtio_gpu_ttm_vm_ops.fault = &virtio_gpu_ttm_fault;
> - }
> - vma->vm_ops = &virtio_gpu_ttm_vm_ops;
> - return 0;
> -#else
> +
> return r;
> -#endif
> }
>
> static int virtio_gpu_invalidate_caches(struct ttm_bo_device *bdev,
> --
> 1.9.1
>
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