Commit 3bf8282c authored by Alex Sierra's avatar Alex Sierra Committed by Alex Deucher
Browse files

drm/amdkfd: add invalid pages debug at vram migration 



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: default avatarAlex Sierra <alex.sierra@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6ffecc94

drivers/gpu/drm/amd/amdkfd/kfd_migrate.c

+14 −0
Original line number Diff line number Diff line
@@ -353,6 +353,20 @@ 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;

}