From: Stephen Hemminger <shemminger@vyatta.com>
Date: Mon, 4 Aug 2008 04:29:57 +0000 (-0700)
Subject: net: eliminate refcounting in backlog queue
X-Git-Tag: v2.6.27-rc2~2^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e583ce5242f32e925dcb198f7123256d0798370;p=pandora-kernel.git

net: eliminate refcounting in backlog queue

Avoid the overhead of atomic increment/decrement on each received packet.
This helps performance of non-NAPI devices (like loopback).
Use cleanup function to walk queue on each cpu and clean out any
left over packets.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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