This adds an RCU macro for continuing search, useful for some network devices like vlan. Signed-off-by: Stephen Hemminger --- a/include/linux/netdevice.h 2009-11-09 22:19:08.511480873 -0800 +++ b/include/linux/netdevice.h 2009-11-10 09:27:17.973376267 -0800 @@ -1079,6 +1079,8 @@ extern rwlock_t dev_base_lock; /* De list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) #define for_each_netdev_continue(net, d) \ list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) +#define for_each_netdev_continue_rcu(net, d) \ + list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) static inline struct net_device *next_net_device(struct net_device *dev) --- a/include/linux/rculist.h 2009-11-09 22:19:08.529480859 -0800 +++ b/include/linux/rculist.h 2009-11-10 09:27:17.974376609 -0800 @@ -262,6 +262,20 @@ static inline void list_splice_init_rcu( (pos) = rcu_dereference((pos)->next)) /** + * list_for_each_entry_continue_rcu - continue iteration over list of given type + * @pos: the type * to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + * + * Continue to iterate over list of given type, continuing after + * the current position. + */ +#define list_for_each_entry_continue_rcu(pos, head, member) \ + for (pos = list_entry_rcu(pos->member.next, typeof(*pos), member); \ + prefetch(pos->member.next), &pos->member != (head); \ + pos = list_entry_rcu(pos->member.next, typeof(*pos), member)) + +/** * hlist_del_rcu - deletes entry from hash list without re-initialization * @n: the element to delete from the hash list. * -- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html