tree de599fdf0df82a87994f7c4c91e11acf3885614d
parent e86800f9201d35b6b2aac1583a9bf9e3a0b0c70d
author Eric Dumazet <edumazet@google.com> 1394043274 -0800
committer David S. Miller <davem@davemloft.net> 1394144694 -0500

net_sched: htb: do not acquire qdisc lock in dump operations

htb_dump() and htb_dump_class() do not strictly need to acquire
qdisc lock to fetch qdisc and/or class parameters.

We hold RTNL and no changes can occur.

This reduces by 50% qdisc lock pressure while doing tc qdisc|class dump
operations.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>