linux-kernel - Re: [PATCH V2] Revert "cpufreq: CPPC: Add support for frequency invariance"

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Date:   Mon, 14 Jun 2021 15:56:49 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rafael Wysocki <rjw@...ysocki.net>,
        Qian Cai <quic_qiancai@...cinc.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Ionela Voinescu <ionela.voinescu@....com>,
        Linux PM <linux-pm@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] Revert "cpufreq: CPPC: Add support for frequency invariance"

On Fri, Jun 11, 2021 at 5:18 AM Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> This reverts commit 4c38f2df71c8e33c0b64865992d693f5022eeaad.
>
> There are few races in the frequency invariance support for CPPC driver,
> namely the driver doesn't stop the kthread_work and irq_work on policy
> exit during suspend/resume or CPU hotplug.
>
> A proper fix won't be possible for the 5.13-rc, as it requires a lot of
> changes. Lets revert the patch instead for now.
>
> Fixes: 4c38f2df71c8 ("cpufreq: CPPC: Add support for frequency invariance")
> Reported-by: Qian Cai <quic_qiancai@...cinc.com>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
> V2: Revert the original patch instead of marking it broken.

Applied as 5.13-rc material, thanks!