Am 2022-07-25 um 08:23 schrieb Philip Yang:
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@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
index 1d0dbff87d3f..e8bb32f4ca14 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_fence.c
@@ -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
I think we still need a brief description here. How about "Check whether
to prevent eviction of @f by @mm".
With that fixed, the patch is
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
*
* @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;
