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Date: Fri, 7 Jul 2017 11:43:41 +0100
From: Juri Lelli <juri.lelli@arm.com>
To: Joel Fernandes <joelaf@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Viresh Kumar <viresh.kumar@linaro.org>,
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        Ingo Molnar <mingo@kernel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [RFC PATCH v1 3/8] sched/cpufreq_schedutil: make worker kthread
 be SCHED_DEADLINE
Message-ID: <20170707104341.vrx4gm2bgoaaixwf@e106622-lin>
References: <20170705085905.6558-1-juri.lelli@arm.com>
 <20170705085905.6558-4-juri.lelli@arm.com>
 <CAJWu+op-y5Q6Ginhxk7ntjTrZmNbJX8arMsqOrkxs34m7CukaA@mail.gmail.com>
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Hi,

On 06/07/17 20:56, Joel Fernandes wrote:
> Hi Juri,
> 
> On Wed, Jul 5, 2017 at 1:59 AM, Juri Lelli <juri.lelli@arm.com> wrote:

[...]

> >         if (attr->sched_flags &
> > -               ~(SCHED_FLAG_RESET_ON_FORK | SCHED_FLAG_RECLAIM))
> > +               ~(SCHED_FLAG_RESET_ON_FORK |
> > +                 SCHED_FLAG_RECLAIM |
> > +                 SCHED_FLAG_SPECIAL))
> >                 return -EINVAL;
> 
> I was thinking if its better to name SCHED_FLAG_SPECIAL something more
> descriptive than "special", since it will not be clear looking at
> other parts of the code that this is used for the frequency scaling
> thread or that its a DL task. I was thinking since this flag is
> specifically setup for the sugov thread frequency scaling purpose, a
> better flag name than SPECIAL might be SCHED_FLAG_DL_FREQ_SCALE or
> SCHED_FLAG_FREQ_SCALE. But I am Ok with whatever makes sense to do
> here. Thanks,
> 

Sure.

How about SCHED_FLAG_SUGOV then?

Thanks,

- Juri