From: Roger.He <Hongbo.He@amd.com>
Date: Mon, 27 Mar 2017 11:38:11 +0000 (+0800)
Subject: drm/amd/amdgpu: fix performance drop when VRAM pressure
X-Git-Tag: Ubuntu-5.10.0-12.13~10409^2~23^2~14
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=c309cd03b4e63785974481d65ffaf13ffcd75afb;p=mirror_ubuntu-hirsute-kernel.git

drm/amd/amdgpu: fix performance drop when VRAM pressure

When VRAM pressue and trigger huge evictions there is performance drop,
this patch fix it.

Signed-off-by: Roger.He <Hongbo.He@amd.com>
Reviewed-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.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 9b2e1f18acfa..5aac350b007f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -405,10 +405,8 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
 	if (unlikely(r != 0))
 		return r;
 
-	bo->tbo.priority = ilog2(bo->tbo.num_pages);
 	if (kernel)
-		bo->tbo.priority *= 2;
-	bo->tbo.priority = min(bo->tbo.priority, (unsigned)(TTM_MAX_BO_PRIORITY - 1));
+		bo->tbo.priority = 1;
 
 	if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
 	    bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {