linux-kernel - Re: [PATCH v2] schedutil: Allow cpufreq requests to be made even when kthread kicked

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Message-ID: <20180522105429.yn2omuz63oa2w3ez@vireshk-i7>
Date:   Tue, 22 May 2018 16:24:29 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     "Joel Fernandes (Google.)" <joelaf@...gle.com>,
        linux-kernel@...r.kernel.org,
        "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Patrick Bellasi <patrick.bellasi@....com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Todd Kjos <tkjos@...gle.com>, claudio@...dence.eu.com,
        kernel-team@...roid.com, linux-pm@...r.kernel.org
Subject: Re: [PATCH v2] schedutil: Allow cpufreq requests to be made even
 when kthread kicked

On 22-05-18, 12:50, Rafael J. Wysocki wrote:
> Ugly indeed.

Hehe. I was thinking, maybe we can write wrapper helpers around lock/unlock
which are stored as pointers in sg_policy. So that those are only set to
non-NULL values (or non-Noop routines) for slow-switching single policy or
any-switching shared policy systems. Then we can get rid of such conditional
locking attempts :)

-- 
viresh