linux-kernel - Re: [PATCH RFC 1/2] sched: cfs: introduce capacity

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Message-ID: <20141009090024.GR10832@worktop.programming.kicks-ass.net>
Date:	Thu, 9 Oct 2014 11:00:24 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Turquette <mturquette@...aro.org>
Cc:	Morten Rasmussen <morten.rasmussen@....com>, mingo@...hat.com,
	dietmar.eggemann@....com, pjt@...gle.com, bsegall@...gle.com,
	vincent.guittot@...aro.org, nicolas.pitre@...aro.org,
	rjw@...ysocki.net, linux-kernel@...r.kernel.org,
	tuukka.tikkanen@...aro.org
Subject: Re: [PATCH RFC 1/2] sched: cfs: introduce capacity_ops

On Wed, Oct 08, 2014 at 04:28:36PM -0700, Mike Turquette wrote:
> > Yeah, like hell no. We do not want modules to affect scheduler
> > behaviour.
> 
> If a CPUfreq driver is the best place to know how frequency affects the
> capacity of a CPU for a given system, are you suggesting that we must
> compile that code into the kernel image instead of it being a loadable
> module?

Ideally we'll end up doing away with the cpufreq policy modules and
integrate the entire thing into the scheduler.
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