1 files changed, 22 insertions, 3 deletions

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index a63029ef3edd..2aeb3a4386a1 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -96,7 +96,7 @@ static inline int handle_dev_cpu_collision(struct sk_buff *skb,
                  * Another cpu is holding lock, requeue & delay xmits for
                  * some time.
                  */
-                __get_cpu_var(softnet_data).cpu_collision++;
+                __this_cpu_inc(softnet_data.cpu_collision);
                 ret = dev_requeue_skb(skb, q);
         }
 
@@ -205,7 +205,7 @@ void __qdisc_run(struct Qdisc *q)
                 }
         }
 
-        clear_bit(__QDISC_STATE_RUNNING, &q->state);
+        qdisc_run_end(q);
 }
 
 unsigned long dev_trans_start(struct net_device *dev)
@@ -327,6 +327,24 @@ void netif_carrier_off(struct net_device *dev)
 }
 EXPORT_SYMBOL(netif_carrier_off);
 
+/**
+ *      netif_notify_peers - notify network peers about existence of @dev
+ *      @dev: network device
+ *
+ * Generate traffic such that interested network peers are aware of
+ * @dev, such as by generating a gratuitous ARP. This may be used when
+ * a device wants to inform the rest of the network about some sort of
+ * reconfiguration such as a failover event or virtual machine
+ * migration.
+ */
+void netif_notify_peers(struct net_device *dev)
+{
+        rtnl_lock();
+        call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev);
+        rtnl_unlock();
+}
+EXPORT_SYMBOL(netif_notify_peers);
+
 /* "NOOP" scheduler: the best scheduler, recommended for all interfaces
    under all circumstances. It is difficult to invent anything faster or
    cheaper.
@@ -543,6 +561,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 
         INIT_LIST_HEAD(&sch->list);
         skb_queue_head_init(&sch->q);
+        spin_lock_init(&sch->busylock);
         sch->ops = ops;
         sch->enqueue = ops->enqueue;
         sch->dequeue = ops->dequeue;
@@ -779,7 +798,7 @@ static bool some_qdisc_is_busy(struct net_device *dev)
 
                 spin_lock_bh(root_lock);
 
-                val = (test_bit(__QDISC_STATE_RUNNING, &q->state) ||
+                val = (qdisc_is_running(q) ||
                        test_bit(__QDISC_STATE_SCHED, &q->state));
 
                 spin_unlock_bh(root_lock);