On Wed, Jul 13, 2022 at 09:12:24AM +0100, Mauro Carvalho Chehab wrote:
> commit d1b48c1e7184 ("drm/i915: Replace execbuf vma ht with an idr")
> added a rbtree list to allow searching for obj/ctx.
>
> Document it.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
>
> To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
> See [PATCH v2 00/39] at: https://lore.kernel.org/all/cover.1657699522.git.mchehab@xxxxxxxxxx/
>
> drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 12 +++++++++---
> 1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> index 5cf36a130061..ceed0d220ce3 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> @@ -21,9 +21,15 @@ struct drm_i915_gem_object;
> struct intel_fronbuffer;
> struct intel_memory_region;
>
> -/*
> - * struct i915_lut_handle tracks the fast lookups from handle to vma used
> - * for execbuf. Although we use a radixtree for that mapping, in order to
> +/**
> + * struct i915_lut_handle - tracks the fast lookups from handle to vma used
> + * for execbuf.
> + *
> + * @obj_link: link to the object associated with the @handle.
> + * @ctx: context associated with the @handle.
> + * @handle: a rbtree handle to lookup context for specific obj/vma.
> + *
> + * Although we use a radixtree for that mapping, in order to
> * remove them as the object or context is closed, we need a secondary list
> * and a translation entry (i915_lut_handle).
> */
> --
> 2.36.1
>
