linux-kernel - Re: [PATCH 16/16] KVM-GST: adjust scheduler cpu power

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Date:	Wed, 26 Jan 2011 17:53:22 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Glauber Costa <glommer@...hat.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	aliguori@...ibm.com, Rik van Riel <riel@...hat.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Avi Kivity <avi@...hat.com>
Subject: Re: [PATCH 16/16] KVM-GST: adjust scheduler cpu power

On Wed, 2011-01-26 at 17:46 +0100, Peter Zijlstra wrote:
> it uses a per-cpu virt_steal_time() clock which is
> expected to return steal-time in ns. 

This clock should return u64 and wrap on u64 and be provided when
CONFIG_SCHED_PARAVIRT.
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