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[Xen-devel] [PATCH] Fix cpufreq HW-ALL coordination handle

To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH] Fix cpufreq HW-ALL coordination handle
From: "Liu, Jinsong" <jinsong.liu@xxxxxxxxx>
Date: Mon, 13 Apr 2009 18:55:02 +0800
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Cc: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
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Thread-topic: [PATCH] Fix cpufreq HW-ALL coordination handle
Fix cpufreq HW-ALL coordination handle

Currently cpufreq HW-ALL coordination is handled same way as SW-ALL.
However, SW-ALL will bring more IPIs which is bad for cpuidle.
This patch implement HW-ALL coordination handled in different way from SW-ALL,
for the sake of performance and reduce IPIs. We also suspend/resume HW-ALL dbs 
timer for idle.

Signed-off-by: Yu, Ke <ke.yu@xxxxxxxxx>
               Liu, Jinsong <jinsong.liu@xxxxxxxxx>
               Tian, Kevin <kevin.tian@xxxxxxxxx>

Attachment: px-xen-hwall.patch
Description: px-xen-hwall.patch

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