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drm/amdgpu: Add KFD VRAM limit checking

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We don't want KFD processes evicting each other over VRAM usage.
Therefore prevent overcommitting VRAM among KFD applications with
a per-GPU limit. Also leave enough room for page tables on top
of the application memory usage.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2018-11-19 20:05:54 -05:00
committed by Alex Deucher
parent 5634e38cda
commit 611736d844
5 changed files with 75 additions and 54 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@@ -81,7 +81,7 @@ static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
amdgpu_bo_subtract_pin_size(bo);
if (bo->kfd_bo)
amdgpu_amdkfd_unreserve_system_memory_limit(bo);
amdgpu_amdkfd_unreserve_memory_limit(bo);
amdgpu_bo_kunmap(bo);