diff options
| author | Eric Dumazet <edumazet@google.com> | 2016-06-06 19:37:15 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-08 02:37:13 +0300 |
| commit | f9eb8aea2a1e12fc2f584d1627deeb957435a801 (patch) | |
| tree | bc3cf06664da45bc0e6ce9b5165dba534ed11751 /net/core/dev.c | |
| parent | 64151ae36ed93c45654069c8aff2a7f0125075e8 (diff) | |
| download | linux-f9eb8aea2a1e12fc2f584d1627deeb957435a801.tar.xz | |
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/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 896b686d1966..e0bcc39f4a7d 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3075,7 +3075,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q, /* * Heuristic to force contended enqueues to serialize on a * separate lock before trying to get qdisc main lock. - * This permits __QDISC___STATE_RUNNING owner to get the lock more + * This permits qdisc->running owner to get the lock more * often and dequeue packets faster. */ contended = qdisc_is_running(q); |