linux-kernel - Re: [PATCH RFC 1/2] thermal/cpu idle cooling: Introduce cpu idle cooling driver

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Message-ID: <CAJZ5v0j8Jg+KuPNtAY6SS2M2g03i8_m2Eja67XtM7H=ub_1A8A@mail.gmail.com>
Date:   Wed, 7 Jun 2017 23:59:12 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Tao Wang <kevin.wangtao@...ilicon.com>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>, amit.kachhap@...il.com,
        javi.merino@...nel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        sunzhaosheng@...ilicon.com,
        Vincent Guittot <vincent.guittot@...aro.org>,
        jean.wangtao@...aro.org
Subject: Re: [PATCH RFC 1/2] thermal/cpu idle cooling: Introduce cpu idle
 cooling driver

On Wed, Jun 7, 2017 at 11:50 PM, Daniel Lezcano
<daniel.lezcano@...aro.org> wrote:
> On Tue, Jun 06, 2017 at 09:11:35AM +0530, viresh kumar wrote:
>> + Daniel
>
> Hi Viresh,
>
> thanks for the head up.
>
> Before going deeply in the review, I have a dumb question:
>
> Why isn't this mechanism implemented at the scheduler level?

I suppose for the same reason why intel_powerclamp is not implemented
like that: the scheduler maintainers don't like the idea.

Thanks,
Rafael