diff options
Diffstat (limited to '')
| -rw-r--r-- | include/net/sch_generic.h | 1 | ||||
| -rw-r--r-- | net/sched/sch_generic.c | 3 | ||||
| -rw-r--r-- | net/sched/sch_htb.c | 22 |
3 files changed, 7 insertions, 19 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index f561dfb79743..79edd5b5e3c9 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -128,6 +128,7 @@ struct Qdisc { struct rcu_head rcu; netdevice_tracker dev_tracker; + struct lock_class_key root_lock_key; /* private data */ long privdata[] ____cacheline_aligned; }; diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 4a2c763e2d11..31dfd6c7405b 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -945,7 +945,9 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, __skb_queue_head_init(&sch->gso_skb); __skb_queue_head_init(&sch->skb_bad_txq); gnet_stats_basic_sync_init(&sch->bstats); + lockdep_register_key(&sch->root_lock_key); spin_lock_init(&sch->q.lock); + lockdep_set_class(&sch->q.lock, &sch->root_lock_key); if (ops->static_flags & TCQ_F_CPUSTATS) { sch->cpu_bstats = @@ -1068,6 +1070,7 @@ static void __qdisc_destroy(struct Qdisc *qdisc) if (ops->destroy) ops->destroy(qdisc); + lockdep_unregister_key(&qdisc->root_lock_key); module_put(ops->owner); netdev_put(dev, &qdisc->dev_tracker); diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 93e6fb56f3b5..ff3de37874e4 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -1039,13 +1039,6 @@ static void htb_work_func(struct work_struct *work) rcu_read_unlock(); } -static void htb_set_lockdep_class_child(struct Qdisc *q) -{ - static struct lock_class_key child_key; - - lockdep_set_class(qdisc_lock(q), &child_key); -} - static int htb_offload(struct net_device *dev, struct tc_htb_qopt_offload *opt) { return dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_HTB, opt); @@ -1132,7 +1125,6 @@ static int htb_init(struct Qdisc *sch, struct nlattr *opt, return -ENOMEM; } - htb_set_lockdep_class_child(qdisc); q->direct_qdiscs[ntx] = qdisc; qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT; } @@ -1468,7 +1460,6 @@ static int htb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, } if (q->offload) { - htb_set_lockdep_class_child(new); /* One ref for cl->leaf.q, the other for dev_queue->qdisc. */ qdisc_refcount_inc(new); old_q = htb_graft_helper(dev_queue, new); @@ -1733,11 +1724,8 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg, new_q = qdisc_create_dflt(dev_queue, &pfifo_qdisc_ops, cl->parent->common.classid, NULL); - if (q->offload) { - if (new_q) - htb_set_lockdep_class_child(new_q); + if (q->offload) htb_parent_to_leaf_offload(sch, dev_queue, new_q); - } } sch_tree_lock(sch); @@ -1947,13 +1935,9 @@ static int htb_change_class(struct Qdisc *sch, u32 classid, new_q = qdisc_create_dflt(dev_queue, &pfifo_qdisc_ops, classid, NULL); if (q->offload) { - if (new_q) { - htb_set_lockdep_class_child(new_q); - /* One ref for cl->leaf.q, the other for - * dev_queue->qdisc. - */ + /* One ref for cl->leaf.q, the other for dev_queue->qdisc. */ + if (new_q) qdisc_refcount_inc(new_q); - } old_q = htb_graft_helper(dev_queue, new_q); /* No qdisc_put needed. */ WARN_ON(!(old_q->flags & TCQ_F_BUILTIN)); |