Date: Thu, 3 Mar 2016 09:34:54 +0000
From: Juri Lelli <Juri.Lelli@arm.com>
To: Steve Muckle <steve.muckle@linaro.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Morten Rasmussen <morten.rasmussen@arm.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Patrick Bellasi <patrick.bellasi@arm.com>,
        Ricky Liang <jcliang@chromium.org>
Subject: Re: [RFCv7 PATCH 03/10] sched: scheduler-driven cpu frequency
 selection
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On 02/03/16 19:50, Steve Muckle wrote:
> On 03/02/2016 06:49 PM, Rafael J. Wysocki wrote:
> > I'm not actually sure if RT is the right answer here.  DL may be a
> > better choice.  After all, we want the thing to happen shortly, but
> > not necessarily at full speed.
> > 
> > So something like a DL workqueue would be quite useful here it seems.
> 
> The DL idea seems like a good one to me.
> 
> It would also prevent cpufreq changes from being delayed by other RT or
> DL tasks.
> 

Dimensioning period and runtime could require some experimenting, but
it's worth a try, I agree.

Best,

- Juri