kobject_namespace
new_name, kobject_namespace(kobj));
old_device_name, kobject_namespace(kobj));
const void *kobject_namespace(const struct kobject *kobj);
error = sysfs_rename_dir_ns(kobj, new_name, kobject_namespace(kobj));
error = sysfs_move_dir_ns(kobj, new_parent, kobject_namespace(kobj));
error = sysfs_create_dir_ns(kobj, kobject_namespace(kobj));