From: Qiang Liu <qiang.liu@freescale.com>
Date: Wed, 15 Feb 2012 07:40:34 +0000 (+0800)
Subject: sata_fsl: add support for interrupt coalsecing feature
X-Git-Tag: v3.4-rc1~129^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b4b8fc87dc5cbfcfb5c749dc200906471fb854c;p=pandora-kernel.git

sata_fsl: add support for interrupt coalsecing feature

Adds support for interrupt coalescing feature to reduce interrupt events.
Provides a mechanism of adjusting coalescing count and timeout tick by sysfs
at runtime, so that tradeoff of latency and CPU load can be made depending
on different applications.

Signed-off-by: Qiang Liu <qiang.liu@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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