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From: Viresh Kumar <viresh.kumar@linaro.org>
Date: Sat, 16 Dec 2017 22:17:07 +0530
Message-ID: <CAKohpomHfV=2CQj0_D=PsoMvbCu5v_ensJqaZmxUURzr27+yhA@mail.gmail.com>
Subject: Re: [PATCH 2/4] sched: cpufreq: Keep track of cpufreq utilization
 update flags
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>, Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Linux PM <linux-pm@vger.kernel.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Morten Rasmussen <morten.rasmussen@arm.com>,
        Juri Lelli <juri.lelli@redhat.com>, Todd Kjos <tkjos@android.com>,
        Joel Fernandes <joelaf@google.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On 16 December 2017 at 22:10, Rafael J. Wysocki <rafael@kernel.org> wrote:
> On Wed, Dec 13, 2017 at 10:53 AM, Viresh Kumar <viresh.kumar@linaro.org> wrote:

>> +#define SCHED_CPUFREQ_CLEAR    (1U << 31)
>
> I'm not thrilled by this, because schedutil is not the only user of
> the flags and it's totally unclear what the other user(s) should do
> when this is set.

intel-pstate is the only other user of the IOWAIT flag, right? In order
not to change the current behavior, we can update that to return early
for now ?

--
viresh