From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 1 Apr 2010 12:35:56 +0000 (+0200)
Subject: netfilter: xt_hashlimit: RCU conversion
X-Git-Tag: v2.6.35-rc1~473^2~168^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=02e4eb75912a5c8babccc1acdc9cc913989be04e;p=pandora-kernel.git

netfilter: xt_hashlimit: RCU conversion

xt_hashlimit uses a central lock per hash table and suffers from
contention on some workloads. (Multiqueue NIC or if RPS is enabled)

After RCU conversion, central lock is only used when a writer wants to
add or delete an entry.

For 'readers', updating an existing entry, they use an individual lock
per entry.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---

Reading git-diff-tree failed