[Intel-gfx] [PATCH 3/3] drm/ttm: remove ttm_bo_wait_unreserved

[Thomas Hellström (VMware)]

On 8/20/19 4:53 PM, Daniel Vetter wrote:
> With nouveau fixed all ttm-using drives have the correct nesting of
> mmap_sem vs dma_resv, and we can just lock the buffer.
>
> Assuming I didn't screw up anything with my audit of course.
>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Christian Koenig <christian.koenig at amd.com>
> Cc: Huang Rui <ray.huang at amd.com>
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> Cc: "VMware Graphics" <linux-graphics-maintainer at vmware.com>
> Cc: Thomas Hellstrom <thellstrom at vmware.com>
> ---
>   drivers/gpu/drm/ttm/ttm_bo.c    | 34 ---------------------------------
>   drivers/gpu/drm/ttm/ttm_bo_vm.c | 26 +------------------------
>   include/drm/ttm/ttm_bo_api.h    |  1 -
>   3 files changed, 1 insertion(+), 60 deletions(-)
>
>
> +	dma_resv_lock(bo->base.resv, NULL);

interruptible, or at least killable. (IIRC think killable is the right 
choice in fault code, even if TTM initially implemented interruptible to 
get reasonable Xorg "silken mouse" latency).

Thanks,
/Thomas