commit f9eb8aea2a1e12fc2f584d1627deeb957435a801
author Eric Dumazet <edumazet@google.com> Mon Jun 06 09:37:15 2016 -0700
committer David S. Miller <davem@davemloft.net> Tue Jun 07 16:37:13 2016 -0700
tree bc3cf06664da45bc0e6ce9b5165dba534ed11751
parent 64151ae36ed93c45654069c8aff2a7f0125075e8

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>