On 2021-06-21 12:04 p.m., Alex Sierra wrote:
This is for debug purposes only.
It conditionally generates partial migrations to test mixed
CPU/GPU memory domain pages in a prange easily.
Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index 8a3f21d76915..f71f8d7e2b72 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -404,6 +404,20 @@ svm_migrate_copy_to_vram(struct amdgpu_device *adev, struct svm_range *prange,
}
}
+#ifdef DEBUG_FORCE_MIXED_DOMAINS
+ for (i = 0, j = 0; i < npages; i += 4, j++) {
+ if (j & 1)
+ continue;
+ svm_migrate_put_vram_page(adev, dst[i]);
+ migrate->dst[i] = 0;
+ svm_migrate_put_vram_page(adev, dst[i + 1]);
+ migrate->dst[i + 1] = 0;
+ svm_migrate_put_vram_page(adev, dst[i + 2]);
+ migrate->dst[i + 2] = 0;
+ svm_migrate_put_vram_page(adev, dst[i + 3]);
+ migrate->dst[i + 3] = 0;
+ }
+#endif
out:
return r;
}
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