kobj_ns_ops
const struct kobj_ns_type_operations *kobj_ns_ops(const struct kobject *kobj);
const struct kobj_ns_type_operations *ns_ops = kobj_ns_ops(kobj);
ops = kobj_ns_ops(kobj);
ops = kobj_ns_ops(kobj);
ops = kobj_ns_ops(ksobj->parent);