drm/amdgpu: Update BO eviction priorities

[ Upstream commit b0b13d532105e0e682d95214933bb8483a063184 ]

Make SVM BOs more likely to get evicted than other BOs. These BOs
opportunistically use available VRAM, but can fall back relatively
seamlessly to system memory. It also avoids SVM migrations evicting
other, more important BOs as they will evict other SVM allocations
first.

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Acked-by: Mukul Joshi <mukul.joshi@amd.com>
Tested-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 9e5526046aa1532d7383e3b1f8eef06ac5f846d6..3af505e8cbbc3e4494b6fbb220227bffb3f76e3f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -608,6 +608,8 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
        else
                amdgpu_bo_placement_from_domain(bo, bp->domain);
        if (bp->type == ttm_bo_type_kernel)
+               bo->tbo.priority = 2;
+       else if (!(bp->flags & AMDGPU_GEM_CREATE_DISCARDABLE))
                bo->tbo.priority = 1;
 
        if (!bp->destroy)