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Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes

From Andi Kleen <andi@firstfloor.org>
Newsgroups linux.kernel
Subject Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes
Date 2017-02-02 01:40 +0100
Message-ID <t6dBo-4UR-9@gated-at.bofh.it> (permalink)
References (2 earlier) <t1Ch4-4tl-23@gated-at.bofh.it> <t1IFQ-8tF-21@gated-at.bofh.it> <t1NPc-3oi-15@gated-at.bofh.it> <t2JTc-59S-17@gated-at.bofh.it> <t69o5-26I-15@gated-at.bofh.it>
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"Luck, Tony" <tony.luck@intel.com> writes:
> 9)	Measure per logical CPU (pick active RMID in same precedence for task/cpu as CAT picks CLOSID)
> 10)	Put multiple CPUs into a group

I'm not sure this is a real requirement. It's just an optimization,
right? If you can assign policies to threads, you can implicitly set it
per CPU through affinity (or the other way around).
The only benefit would be possibly less context switch overhead,
but if all the thread (including idle) assigned to a CPU have the
same policy it would have the same results.

I suspect dropping this would likely simplify the interface significantly.

-Andi

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Thread

RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-01 21:10 +0100
  Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-02 00:20 +0100
    RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-02 18:40 +0100
    RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-02 20:40 +0100
      RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Shivappa Vikas <vikas.shivappa@intel.com> - 2017-02-02 21:20 +0100
      Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-02 21:30 +0100
        Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-03 00:50 +0100
          Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-03 02:50 +0100
            Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-03 03:20 +0100
              Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-03 19:00 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-03 22:10 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-03 23:30 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Stephane Eranian <eranian@google.com> - 2017-02-07 09:10 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-07 20:10 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Stephane Eranian <eranian@google.com> - 2017-02-08 22:40 +0100
                Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Shivappa Vikas <vikas.shivappa@intel.com> - 2017-02-07 21:30 +0100
    RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-06 20:00 +0100
    RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-06 22:30 +0100
      RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Shivappa Vikas <vikas.shivappa@intel.com> - 2017-02-06 22:40 +0100
        Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-06 22:50 +0100
      Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-06 23:20 +0100
        RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Luck, Tony" <tony.luck@intel.com> - 2017-02-07 00:30 +0100
          Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-07 01:40 +0100
  Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Andi Kleen <andi@firstfloor.org> - 2017-02-02 01:40 +0100
    Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Andi Kleen <andi@firstfloor.org> - 2017-02-02 02:20 +0100
    Re: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes David Carrillo-Cisneros <davidcc@google.com> - 2017-02-02 02:20 +0100
    RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes "Yu, Fenghua" <fenghua.yu@intel.com> - 2017-02-02 02:30 +0100
      RE: [PATCH 00/12] Cqm2: Intel Cache quality monitoring fixes Shivappa Vikas <vikas.shivappa@intel.com> - 2017-02-02 19:00 +0100

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