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Date:   Fri, 26 Jun 2020 07:44:28 +0530
From:   Viresh Kumar <viresh.kumar@linaro.org>
To:     Wei Wang <wvw@google.com>
Cc:     Wei Wang <wei.vince.wang@gmail.com>, dsmythies@telus.net,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Juri Lelli <juri.lelli@redhat.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
        "Joel Fernandes (Google)" <joel@joelfernandes.org>,
        Linux PM list <linux-pm@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] cpufreq: schedutil: force frequency update when limits
 change
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On 25-06-20, 13:47, Wei Wang wrote:
> On Thu, Jun 25, 2020 at 3:23 AM Viresh Kumar <viresh.kumar@linaro.org> wrote:
> > I am sorry but I am not fully sure of what the problem is. Can you
> > describe that by giving an example with some random frequency, and
> > tell the expected and actual behavior ?
> >
> The problem is sugov thought next_freq already updated (but actually
> skipped by the rate limit thing) and all following updates will be
> skipped.

I am sorry, can you please give a detailed example with existing
frequency and limits, then the limits changed to new values, then what
exactly happens ?

> Actually this is specifically for Android common kernel 4.19's issue
> which has sugov_up_down_rate_limit in sugov_update_next_freq, let's
> continue discussion there.

If it is a mainline problem, we will surely get it fixed here. Just
that I am not able to understand the problem yet. Sorry about that.

-- 
viresh