19  * i915_ttm_backup_free - Free any backup attached to this object
20  * @obj: The object whose backup is to be freed.
24 	if (obj->ttm.backup) {  in i915_ttm_backup_free()
25 		i915_gem_object_put(obj->ttm.backup);  in i915_ttm_backup_free()
26 		obj->ttm.backup = NULL;  in i915_ttm_backup_free()
34  * @backup_pinned: On backup, backup also pinned objects.
51 	struct drm_i915_gem_object *backup;  in i915_ttm_backup()  local
56 	if (!i915_ttm_cpu_maps_iomem(bo->resource) || obj->ttm.backup)  in i915_ttm_backup()
83 	backup = i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_SMEM],  in i915_ttm_backup()
85 	if (IS_ERR(backup))  in i915_ttm_backup()
86 		return PTR_ERR(backup);  in i915_ttm_backup()
88 	err = i915_gem_object_lock(backup, apply->ww);  in i915_ttm_backup()
92 	backup_bo = i915_gem_to_ttm(backup);  in i915_ttm_backup()
97 	err = i915_gem_obj_copy_ttm(backup, obj, pm_apply->allow_gpu, false);  in i915_ttm_backup()
106 	obj->ttm.backup = backup;  in i915_ttm_backup()
110 	i915_gem_ww_unlock_single(backup);  in i915_ttm_backup()
112 	i915_gem_object_put(backup);  in i915_ttm_backup()
125  * i915_ttm_recover_region - Free the backup of all objects of a region
128  * Checks all objects of a region if there is backup attached and if so
129  * frees that backup. Typically this is called to recover after a partially
130  * performed backup.
147  * @flags: TTM backup flags
150  * evictable or backs them up using a backup object if they are pinned.
173 	struct drm_i915_gem_object *backup = obj->ttm.backup;  in i915_ttm_restore()  local
174 	struct ttm_buffer_object *backup_bo = i915_gem_to_ttm(backup);  in i915_ttm_restore()
178 	if (!backup)  in i915_ttm_restore()
184 	err = i915_gem_object_lock(backup, apply->ww);  in i915_ttm_restore()
194 		err = i915_gem_obj_copy_ttm(obj, backup, pm_apply->allow_gpu,  in i915_ttm_restore()
199 		obj->ttm.backup = NULL;  in i915_ttm_restore()
203 	i915_gem_ww_unlock_single(backup);  in i915_ttm_restore()
206 		i915_gem_object_put(backup);  in i915_ttm_restore()
214  * @flags: TTM backup flags