linux-kernel - Re: [PATCH 1/2] cpufreq: schedutil: Fix per-CPU structure initialization in sugov

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Message-ID: <3822450.QzCeJBOUoJ@aspire.rjw.lan>
Date:   Mon, 20 Mar 2017 13:36:06 +0100
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Juri Lelli <juri.lelli@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Patrick Bellasi <patrick.bellasi@....com>,
        Joel Fernandes <joelaf@...gle.com>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 1/2] cpufreq: schedutil: Fix per-CPU structure initialization in sugov_start()

On Monday, March 20, 2017 08:58:40 AM Viresh Kumar wrote:
> On 19-03-17, 14:30, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > 
> > sugov_start() only initializes struct sugov_cpu per-CPU structures
> > for shared policies, but it should do that for single-CPU policies too.
> > 
> > That in particular makes the IO-wait boost mechanism work in the
> > cases when cpufreq policies correspond to individual CPUs.
> > 
> > Fixes: 21ca6d2c52f8 (cpufreq: schedutil: Add iowait boosting)
> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Cc: 4.9+ <stable@...r.kernel.org> # 4.9+

"stable" checks Fixes: tags too, but yes.

> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

Thanks,
Rafael