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

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Date:   Wed, 13 Jul 2022 09:12:24 +0100
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Matthew Auld <matthew.auld@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 36/39] drm/i915 i915_gem_object_types.h: document struct i915_lut_handle

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>
---

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