[PATCH 1/6] drm/ttm: add on_alloc_stage and reservation into ttm_operation_ctx

[Daniel Vetter]

On Tue, Dec 12, 2017 at 10:34 AM Roger He <Hongbo.He at amd.com> wrote:
>
> on_alloc_stage: is this operation on allocation stage
> resv: reservation bo used of this operation
>
> Change-Id: I01ea482e8c7470014196eb218e2ff8913306eef0
> Signed-off-by: Roger He <Hongbo.He at amd.com>

Real commit message (the later patches using this are even sparser)
and/or proper kerneldoc would be massively appreciated in common code.
You guys have done a ton of stuff and special cases just for amdgpu,
and if someone doesn't at least know what you aimed to do it's pretty
much impossible to understand. I don't care much if this is the
standard in drivers, but common code really should bother to explain
what problem it's trying to solve.

(yes I think I figured out what it's doing, but I'm pretty sure most
dri-devel folks hacking on gem/cs/render stuff won't be so lucky)
-Daniel

> ---
>  include/drm/ttm/ttm_bo_api.h | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
> index 368eb02..25de597 100644
> --- a/include/drm/ttm/ttm_bo_api.h
> +++ b/include/drm/ttm/ttm_bo_api.h
> @@ -263,6 +263,8 @@ struct ttm_bo_kmap_obj {
>   *
>   * @interruptible: Sleep interruptible if sleeping.
>   * @no_wait_gpu: Return immediately if the GPU is busy.
> + * @on_alloc_stage: is this operation on allocation stage
> + * @resv: resvation bo used
>   *
>   * Context for TTM operations like changing buffer placement or general memory
>   * allocation.
> @@ -270,6 +272,8 @@ struct ttm_bo_kmap_obj {
>  struct ttm_operation_ctx {
>         bool interruptible;
>         bool no_wait_gpu;
> +       bool on_alloc_stage;
> +       struct reservation_object *resv;
>         uint64_t bytes_moved;
>  };
>
> --
> 2.7.4
>
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch