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drm/amdgpu: Use preemptible placement for KFD

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KFD userptr BOs and SG BOs used for DMA mappings can be preempted with
CWSR. Therefore we can use preemptible placement and avoid unwanted
evictions due to GTT accounting.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling 2021-05-18 21:46:02 -04:00 committed by Alex Deucher
parent b453e42a6e
commit 5bb198930a
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
View file

@ -621,8 +621,8 @@ kfd_mem_attach_userptr(struct amdgpu_device *adev, struct kgd_mem *mem,
ret = amdgpu_gem_object_create(adev, bo_size, 1,
AMDGPU_GEM_DOMAIN_CPU,
0, ttm_bo_type_sg,
mem->bo->tbo.base.resv,
AMDGPU_GEM_CREATE_PREEMPTIBLE,
ttm_bo_type_sg, mem->bo->tbo.base.resv,
&gobj);
if (ret)
return ret;
@ -662,6 +662,7 @@ kfd_mem_attach_dmabuf(struct amdgpu_device *adev, struct kgd_mem *mem,
dma_buf_put(mem->dmabuf);
*bo = gem_to_amdgpu_bo(gobj);
(*bo)->flags |= AMDGPU_GEM_CREATE_PREEMPTIBLE;
(*bo)->parent = amdgpu_bo_ref(mem->bo);
return 0;
@ -1410,7 +1411,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
} else if (flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) {
domain = AMDGPU_GEM_DOMAIN_GTT;
alloc_domain = AMDGPU_GEM_DOMAIN_CPU;
alloc_flags = 0;
alloc_flags = AMDGPU_GEM_CREATE_PREEMPTIBLE;
if (!offset || !*offset)
return -EINVAL;
user_addr = untagged_addr(*offset);