linux-kernel - Re: [RFC -v3 PATCH 2/3] sched: add yield

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Date:	Wed, 05 Jan 2011 18:15:18 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Avi Kivity <avi@...hat.com>
Cc:	Rik van Riel <riel@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [RFC -v3 PATCH 2/3] sched: add yield_to function

On Wed, 2011-01-05 at 19:10 +0200, Avi Kivity wrote:
> On 01/04/2011 08:04 PM, Peter Zijlstra wrote:
> > This definitely wants to be EXPORT_SYMBOL_GPL() and if it were possible
> > I'd make it so only kvm.o could use it. It really sucks that kvm is a
> > module.
> 
> Why does it suck?  I mean apart from the "virtualization is crap" song.

Because it needs hooks all over the core kernel, like this yield_to()
stuff. Exporting this might lead to others wanting to use it too.
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