linux-kernel - Re: [RFT][PATCH 0/3] cpufreq / PM: QoS: Introduce frequency QoS and use it in cpufreq

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Message-ID: <CAJZ5v0hpfvy5iELVRWFA3HS8NoAH0=py0cE+fLaUq2hDReCrnQ@mail.gmail.com>
Date:   Fri, 18 Oct 2019 10:24:56 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Dmitry Osipenko <digetx@...il.com>
Subject: Re: [RFT][PATCH 0/3] cpufreq / PM: QoS: Introduce frequency QoS and
 use it in cpufreq

On Fri, Oct 18, 2019 at 7:44 AM Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> On 17-10-19, 18:34, Rafael J. Wysocki wrote:
> > [BTW, Viresh, it looks like cpufreq_set_policy() should still ensure
> > that the new min is less than the new max, because the QoS doesn't do
> > that.]
>
> The ->verify() callback does that for us I believe.

It does in practice AFAICS, but in theory it may assume the right
ordering between the min and the max and just test the boundaries, may
it not?