linux-kernel - Re: cpufreq governors broken with !CONFIG

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Message-ID: <20160506002519.GB14673@sky.smuckle.net>
Date:	Thu, 5 May 2016 17:25:19 -0700
From:	Steve Muckle <steve.muckle@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Steve Muckle <steve.muckle@...aro.org>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: cpufreq governors broken with !CONFIG_SMP?

On Fri, May 06, 2016 at 02:09:07AM +0200, Rafael J. Wysocki wrote:
> In turn, schedutil should probably depend on CONFIG_SMP.

In the long term I wonder if it's worth putting PELT under its own
separate feature or just removing #ifdef CONFIG_SMP.

Aside from task migration CPU frequency updates there's also task
creation and deletion which would apply on UP. The tunable
infrastructure being created for scheduler-guided frequency may be of
interest on UP also.