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Groups > linux.kernel > #1622068

Re: [RFC v3 0/5] Add capacity capping support to the CPU controller

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [RFC v3 0/5] Add capacity capping support to the CPU controller
Date 2017-04-12 14:20 +0200
Message-ID <tvppE-4l7-25@gated-at.bofh.it> (permalink)
References <tfRge-5JN-31@gated-at.bofh.it> <tn6WT-6aK-29@gated-at.bofh.it> <tn9rI-81U-11@gated-at.bofh.it> <tuC5z-68L-3@gated-at.bofh.it> <tv8f8-1JB-3@gated-at.bofh.it>
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On Tue, Apr 11, 2017 at 06:58:33PM +0100, Patrick Bellasi wrote:
> We should consider also that at the CPUFreq side we already expose
> knobs like scaling_{min,max}_freq which are much more platform
> dependant than capacity.

So I've always objected to these knobs.

That said; they are a pre-existing user interface so changing them isn't
really feasible much.

But at the very least we should integrate them properly. Which for
schedutil would mean they have to directly modify the relevant CPU
capacity values. Is this currently done? (I think not.)

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Thread

Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-11 20:00 +0200
  Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 14:20 +0200
    Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-12 16:00 +0200
      Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 17:40 +0200
        Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-13 13:40 +0200
  Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 14:20 +0200
    Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-12 15:40 +0200
      Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 16:50 +0200
  Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 14:30 +0200
    Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-12 15:30 +0200
  Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 14:50 +0200
    Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-12 15:30 +0200
      Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 16:40 +0200
        Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-12 16:50 +0200
          Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Peter Zijlstra <peterz@infradead.org> - 2017-04-12 18:20 +0200
            Re: [RFC v3 0/5] Add capacity capping support to the CPU controller Patrick Bellasi <patrick.bellasi@arm.com> - 2017-04-13 12:40 +0200

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