linux-kernel - Re: [PATCH v2 36/39] drm/i915 i915_gem_object_types.h: document struct i915_lut

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Date:   Tue, 9 Aug 2022 06:09:56 -0400
From:   Rodrigo Vivi <rodrigo.vivi@...el.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
CC:     Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        Matthew Auld <matthew.auld@...el.com>,
        <intel-gfx@...ts.freedesktop.org>
Subject: Re: [PATCH v2 36/39] drm/i915 i915_gem_object_types.h: document
 struct i915_lut_handle

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@...nel.org>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
> ---
> 
> 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@kernel.org/
> 
>  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
>