iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amdgpu: Allow TTM to evict svm bo from same process

Browse Source 
To support SVM range VRAM overcommitment, TTM should be able to evict
svm bo of same process to system memory, to get space to alloc new svm
bo.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang 2022-07-22 15:07:00 -04:00 committed by Alex Deucher
parent 1f83db6be3
commit 79b2c54f19
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
View File

@ -159,11 +159,14 @@ static void amdkfd_fence_release(struct dma_fence *f)
}
/**
* amdkfd_fence_check_mm - Check if @mm is same as that of the fence @f
* if same return TRUE else return FALSE.
* amdkfd_fence_check_mm - Check whether to prevent eviction of @f by @mm
*
* @f: [IN] fence
* @mm: [IN] mm that needs to be verified
*
* Check if @mm is same as that of the fence @f, if same return TRUE else
* return FALSE.
* For svm bo, which support vram overcommitment, always return FALSE.
*/
bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm)
{
@ -171,7 +174,7 @@ bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm)
if (!fence)
return false;
else if (fence->mm == mm)
else if (fence->mm == mm && !fence->svm_bo)
return true;
return false;