From: Eric Dumazet <dada1@cosmosbay.com>
Date: Fri, 20 Feb 2009 10:03:33 +0000 (+0100)
Subject: netfilter: ip_tables: unfold two critical loops in ip_packet_match()
X-Git-Tag: v2.6.30-rc1~662^2~48^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08361aa807ae5e5007cd226ca9e34287512de737;p=pandora-kernel.git

netfilter: ip_tables: unfold two critical loops in ip_packet_match()

While doing oprofile tests I noticed two loops are not properly unrolled by gcc

Using a hand coded unrolled loop provides nice speedup : ipt_do_table
credited of 2.52 % of cpu instead of 3.29 % in tbench.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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