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Re: [PATCH 3/4] sched: introduce synchronized idle injection

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 3/4] sched: introduce synchronized idle injection
Date 2015-11-20 11:30 +0100
Message-ID <qwR75-5WC-47@gated-at.bofh.it> (permalink)
References (2 earlier) <qwd9D-4Pa-3@gated-at.bofh.it> <qwdjm-4US-47@gated-at.bofh.it> <qwBbY-3Tf-25@gated-at.bofh.it> <qwDGN-5Ex-5@gated-at.bofh.it> <qwQum-5rq-7@gated-at.bofh.it>
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On Fri, Nov 20, 2015 at 10:45:14AM +0100, Thomas Gleixner wrote:

> The whole concept of faking idle is simply crap.

:-)

> If you want to avoid that stuff in the scheduler, then create a
> mechanism which just defers the next timer interrupt for X
> milliseconds and does not any fiddling with NOHZ state and such.

Not sure that will actually result in the machine going idle. Device
interrupts will still wake tasks and get them ran.

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Thread

Re: [PATCH 3/4] sched: introduce synchronized idle injection Morten Rasmussen <morten.rasmussen@arm.com> - 2015-11-18 16:50 +0100
  Re: [PATCH 3/4] sched: introduce synchronized idle injection Arjan van de Ven <arjan@linux.intel.com> - 2015-11-18 17:00 +0100
    Re: [PATCH 3/4] sched: introduce synchronized idle injection Morten Rasmussen <morten.rasmussen@arm.com> - 2015-11-19 18:30 +0100
      Re: [PATCH 3/4] sched: introduce synchronized idle injection Peter Zijlstra <peterz@infradead.org> - 2015-11-19 21:10 +0100
        Re: [PATCH 3/4] sched: introduce synchronized idle injection Thomas Gleixner <tglx@linutronix.de> - 2015-11-20 10:50 +0100
          Re: [PATCH 3/4] sched: introduce synchronized idle injection Peter Zijlstra <peterz@infradead.org> - 2015-11-20 11:30 +0100
            Re: [PATCH 3/4] sched: introduce synchronized idle injection Thomas Gleixner <tglx@linutronix.de> - 2015-11-20 12:00 +0100
              Re: [PATCH 3/4] sched: introduce synchronized idle injection Peter Zijlstra <peterz@infradead.org> - 2015-11-20 14:00 +0100
                Re: [PATCH 3/4] sched: introduce synchronized idle injection Thomas Gleixner <tglx@linutronix.de> - 2015-11-20 20:00 +0100
              Re: [PATCH 3/4] sched: introduce synchronized idle injection Jacob Pan <jacob.jun.pan@linux.intel.com> - 2015-11-24 12:40 +0100
      Re: [PATCH 3/4] sched: introduce synchronized idle injection Jacob Pan <jacob.jun.pan@linux.intel.com> - 2015-11-23 19:00 +0100

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