drm/amdgpu: handle multi level PD in the LRU

}

/**

 * amdgpu_vm_move_pt_bos_in_lru - move the PT BOs to the LRU tail

 * amdgpu_vm_move_level_in_lru - move one level of PT BOs to the LRU tail

 *

 * @adev: amdgpu device instance

 * @vm: vm providing the BOs

 *

 * Move the PT BOs to the tail of the LRU.

 */

void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,

				  struct amdgpu_vm *vm)

static void amdgpu_vm_move_level_in_lru(struct amdgpu_vm_pt *parent)

{

	struct ttm_bo_global *glob = adev->mman.bdev.glob;

	unsigned i;

	spin_lock(&glob->lru_lock);

	for (i = 0; i <= vm->root.last_entry_used; ++i) {

		struct amdgpu_bo *bo = vm->root.entries[i].bo;

	if (!parent->entries)

		return;

		if (!bo)

	for (i = 0; i <= parent->last_entry_used; ++i) {

		struct amdgpu_vm_pt *entry = &parent->entries[i];

		if (!entry->bo)

			continue;

		ttm_bo_move_to_lru_tail(&bo->tbo);

		ttm_bo_move_to_lru_tail(&entry->bo->tbo);

		amdgpu_vm_move_level_in_lru(entry);

	}

}

/**

 * amdgpu_vm_move_pt_bos_in_lru - move the PT BOs to the LRU tail

 *

 * @adev: amdgpu device instance

 * @vm: vm providing the BOs

 *

 * Move the PT BOs to the tail of the LRU.

 */

void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,

				  struct amdgpu_vm *vm)

{

	struct ttm_bo_global *glob = adev->mman.bdev.glob;

	spin_lock(&glob->lru_lock);

	amdgpu_vm_move_level_in_lru(&vm->root);

	spin_unlock(&glob->lru_lock);

}