From: Christian König <christian.koenig@amd.com>
Date: Thu, 20 Jul 2017 21:58:19 +0000 (+0200)
Subject: drm/amdgpu: shadow and mn list are mutually exclusive
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ed5b89c69cb037c5803c36050377c4b233fbf0b6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/amdgpu: shadow and mn list are mutually exclusive

Save some memory because only one of those is used at all times.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index a401fe3bdd26..3b92d5236670 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -87,8 +87,11 @@ struct amdgpu_bo {
 
 	struct ttm_bo_kmap_obj		dma_buf_vmap;
 	struct amdgpu_mn		*mn;
-	struct list_head		mn_list;
-	struct list_head		shadow_list;
+
+	union {
+		struct list_head	mn_list;
+		struct list_head	shadow_list;
+	};
 };
 
 /**