net: reorder struct Qdisc for better SMP performance

[karo-tx-linux.git] / include / net / sch_generic.h

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 3d78a4d224601f5003aef260f4363bc88707d3be..964ffa0d8815139ae22d351590b5673a4dd38850 100644 (file)
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -49,18 +49,10 @@ struct Qdisc
        int                     padded;
        struct Qdisc_ops        *ops;
        struct qdisc_size_table *stab;
+       struct list_head        list;
        u32                     handle;
        u32                     parent;
        atomic_t                refcnt;
-       unsigned long           state;
-       struct sk_buff          *gso_skb;
-       struct sk_buff_head     q;
-       struct netdev_queue     *dev_queue;
-       struct Qdisc            *next_sched;
-       struct list_head        list;
-
-       struct gnet_stats_basic bstats;
-       struct gnet_stats_queue qstats;
        struct gnet_stats_rate_est      rate_est;
        int                     (*reshape_fail)(struct sk_buff *skb,
                                        struct Qdisc *q);
@@ -71,6 +63,17 @@ struct Qdisc
         * and it will live until better solution will be invented.
         */
        struct Qdisc            *__parent;
+       struct netdev_queue     *dev_queue;
+       struct Qdisc            *next_sched;
+
+       struct sk_buff          *gso_skb;
+       /*
+        * For performance sake on SMP, we put highly modified fields at the end
+        */
+       unsigned long           state;
+       struct sk_buff_head     q;
+       struct gnet_stats_basic bstats;
+       struct gnet_stats_queue qstats;
 };
 
 struct Qdisc_class_ops