linux-kernel - Re: [PATCH] x86: tsc: Rework time_cpufreq

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Message-ID: <20190418184040.GM27160@zn.tnic>
Date:   Thu, 18 Apr 2019 20:40:40 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Linux PM <linux-pm@...r.kernel.org>,
        x86 Maintainers <x86@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: tsc: Rework time_cpufreq_notifier()

On Thu, Apr 18, 2019 at 04:11:37PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> There are problems with running time_cpufreq_notifier() on SMP
> systems.

Just a stupid question: that must be some old rust you're fixing because
we set X86_FEATURE_CONSTANT_TSC on almost anything that is x86 nowadays
and if that is set, we don't reg that notifier call...

-- 
Regards/Gruss,
    Boris.

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