linux-kernel - Re: [PATCH] PM / arch: x86: Rework the MSR_IA32_ENERGY_PERF

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Message-ID: <CAJZ5v0ifgnvgJ2jPD=5y9H9noSPLYJxXrESJtfzAaVztZ5gQxQ@mail.gmail.com>
Date:   Thu, 21 Mar 2019 10:36:21 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Borislav Petkov <bp@...e.de>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Len Brown <len.brown@...el.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Laura Abbott <labbott@...oraproject.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Simon Schricker <sschricker@...e.de>,
        Hannes Reinecke <hare@...e.de>
Subject: Re: [PATCH] PM / arch: x86: Rework the MSR_IA32_ENERGY_PERF_BIAS handling

On Thu, Mar 21, 2019 at 10:32 AM Borislav Petkov <bp@...e.de> wrote:
>
> On Thu, Mar 21, 2019 at 10:28:50AM +0100, Rafael J. Wysocki wrote:
> > So as I've just said, I'm going to add a sysfs knob for adjusting EPB,
> > but I'd rather not do that in this patch.
>
> Yes, but let's do it ontop pls. Otherwise we'll never get off this
> /dev/msr perpetual insanity.

Sure.