From: Eric Dumazet <dada1@cosmosbay.com>
Date: Wed, 7 Mar 2007 04:23:10 +0000 (-0800)
Subject: [IPV4]: Optimize inet_getpeer()
X-Git-Tag: v2.6.22-rc1~1128^2~397
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=243bbcaa09e8482aa28065cbc2eb99f0ca2fc8d6;p=pandora-kernel.git

[IPV4]: Optimize inet_getpeer()

1) Some sysctl vars are declared __read_mostly

2) We can avoid updating stack[] when doing an AVL lookup only.

    lookup() macro is extended to receive a second parameter, that may be NULL
in case of a pure lookup (no need to save the AVL path). This removes
unnecessary instructions, because compiler knows if this _stack parameter is
NULL or not.

    text size of net/ipv4/inetpeer.o is 2063 bytes instead of 2107 on x86_64

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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