throttle_attribute
struct throttle_attribute *ta = kobj_attribute_to_throttle(attr);
struct throttle_attribute *other_ta = kobj_attribute_to_throttle(kattr);
struct throttle_attribute attr_##name = { \
struct throttle_attribute attr_##name = { \
static struct throttle_attribute *kobj_attribute_to_throttle(struct kobj_attribute *attr)
return container_of(attr, struct throttle_attribute, attr);