From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Fri, 26 Aug 2011 07:43:54 +0000 (+0000)
Subject: igb: Refactor clean_rx_irq to reduce overhead and improve performance
X-Git-Tag: v3.2-rc1~129^2~253^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16eb8815c2355b50bff218513367778e6303e9f9;p=pandora-kernel.git

igb: Refactor clean_rx_irq to reduce overhead and improve performance

This change is meant to be a general cleanup and performance improvement
for clean_rx_irq.  The previous patch should have updated the allocation so
that the rings can be treated as read-only within the clean_rx_irq
function.  In addition I am re-ordering the operations such that several
goals are accomplished including reducing the overhead for packet
accounting, reducing the number of items on the stack, and improving
overall performance.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by:  Aaron Brown  <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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