-#ifndef __KERNEL__
-# define list_add_rcu list_add
-# define list_del_rcu list_del
-# define list_for_each_rcu list_for_each
-# define list_for_each_safe_rcu list_for_each_safe
-# define list_for_each_entry_rcu list_for_each_entry
-# define rcu_read_lock() spin_lock(&bucket->lock)
-# define rcu_read_unlock() spin_unlock(&bucket->lock)
-#endif /* !__KERNEL__ */