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drm/amdgpu: add new bo flag that indicates BOs don't need fallback (v2)

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user cases:
1. KFD wraps amdgpu_bo_create, they have no fallback case which is different
with amdgpu_gem_object_create.
since upstream branch has no amdgpu_amdkfd_gpuvm.c, which need KFD
guys add this flag to __alloc_memory_of_gpu:
+       flags |= AMDGPU_GEM_CREATE_NO_FALLBACK;
2. UMD can specify this flag for their allocation as well if they like.

v2: squash in merge conflict fix (Chunming)

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: felix.kuehling@amd.com
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou
2018-04-02 11:20:44 +08:00
committed by Alex Deucher
parent 5a8c102ac4
commit 552825b28d
3 changed files with 8 additions and 2 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@@ -386,7 +386,8 @@ retry:
bo->tbo.mem.start < adev->gmc.visible_vram_size >> PAGE_SHIFT)
p->bytes_moved_vis += ctx.bytes_moved;
if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains &&
!(bo->flags & AMDGPU_GEM_CREATE_NO_FALLBACK)) {
domain = bo->allowed_domains;
goto retry;
}