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Re: [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization

From Mark Brown <broonie@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization
Date 2016-02-08 14:20 +0100
Message-ID <qZTTs-5KP-13@gated-at.bofh.it> (permalink)
References <qY4gi-1sv-5@gated-at.bofh.it> <qY4gj-1sv-27@gated-at.bofh.it> <qZT74-584-11@gated-at.bofh.it>
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On Mon, Feb 08, 2016 at 12:28:39PM +0000, Dietmar Eggemann wrote:
> On 03/02/16 11:59, Juri Lelli wrote:

> > +bool arch_wants_init_cpu_capacity(void)
> > +{
> > +	return true;

> Isn't this a little bit too simple? Not every ARM/ARM64 platform is a
> heterogeneous one.

Does it matter?  Is there any problem with doing the callibration and
having it say that all the CPUs performs very similarly?  My
understanding was that this was simply saying it was worth checking to
see if there was some asymmetry.

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Thread

[PATCH v3 0/6] CPUs capacity information for heterogeneous systems Juri Lelli <juri.lelli@arm.com> - 2016-02-03 13:00 +0100
  [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization Juri Lelli <juri.lelli@arm.com> - 2016-02-03 13:00 +0100
    Re: [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization Dietmar Eggemann <dietmar.eggemann@arm.com> - 2016-02-08 13:30 +0100
      Re: [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization Mark Brown <broonie@kernel.org> - 2016-02-08 14:20 +0100
        Re: [PATCH v3 4/6] arm64: Enable dynamic CPU capacity initialization Dietmar Eggemann <dietmar.eggemann@arm.com> - 2016-02-08 14:50 +0100
  [PATCH v3 6/6] arm64: add sysfs cpu_capacity attribute Juri Lelli <juri.lelli@arm.com> - 2016-02-03 13:10 +0100
    Re: [PATCH v3 6/6] arm64: add sysfs cpu_capacity attribute Dietmar Eggemann <dietmar.eggemann@arm.com> - 2016-02-05 18:20 +0100
      Re: [PATCH v3 6/6] arm64: add sysfs cpu_capacity attribute Juri Lelli <juri.lelli@arm.com> - 2016-02-05 18:50 +0100
  [PATCH v3 5/6] arm: add sysfs cpu_capacity attribute Juri Lelli <juri.lelli@arm.com> - 2016-02-03 13:10 +0100
  [PATCH v3 3/6] arm: Enable dynamic CPU capacity initialization Juri Lelli <juri.lelli@arm.com> - 2016-02-03 13:10 +0100
  Re: [PATCH v3 0/6] CPUs capacity information for heterogeneous  systems Steve Muckle <steve.muckle@linaro.org> - 2016-02-09 01:10 +0100

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