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| author | Eric Dumazet <edumazet@google.com> | 2016-06-06 18:37:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-08 01:37:13 +0200 |
| commit | f9eb8aea2a1e12fc2f584d1627deeb957435a801 (patch) | |
| tree | bc3cf06664da45bc0e6ce9b5165dba534ed11751 /net/bluetooth/6lowpan.c | |
| parent | Merge branch 'be2net-noncrit-fixes' (diff) | |
| download | linux-f9eb8aea2a1e12fc2f584d1627deeb957435a801.tar.xz linux-f9eb8aea2a1e12fc2f584d1627deeb957435a801.zip | |
net_sched: transform qdisc running bit into a seqcount
Instead of using a single bit (__QDISC___STATE_RUNNING)
in sch->__state, use a seqcount.
This adds lockdep support, but more importantly it will allow us
to sample qdisc/class statistics without having to grab qdisc root lock.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bluetooth/6lowpan.c')
| -rw-r--r-- | net/bluetooth/6lowpan.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 780089d75915..977a11e418d0 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -629,6 +629,7 @@ static netdev_tx_t bt_xmit(struct sk_buff *skb, struct net_device *netdev) static struct lock_class_key bt_tx_busylock; static struct lock_class_key bt_netdev_xmit_lock_key; +static struct lock_class_key bt_qdisc_running_key; static void bt_set_lockdep_class_one(struct net_device *dev, struct netdev_queue *txq, @@ -641,6 +642,7 @@ static int bt_dev_init(struct net_device *dev) { netdev_for_each_tx_queue(dev, bt_set_lockdep_class_one, NULL); dev->qdisc_tx_busylock = &bt_tx_busylock; + dev->qdisc_running_key = &bt_qdisc_running_key; return 0; } |