From: Alex Sierra alex.sierra@amd.com
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@amd.com --- 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; }