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Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task

From Viresh Kumar <viresh.kumar@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task
Date 2016-11-12 06:30 +0100
Message-ID <sCz33-6bf-1@gated-at.bofh.it> (permalink)
References <sChfQ-35W-17@gated-at.bofh.it> <sChfQ-35W-19@gated-at.bofh.it> <sCl9M-5wV-13@gated-at.bofh.it> <sCl9M-5wV-11@gated-at.bofh.it>
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On 11 November 2016 at 20:09, Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, Nov 11, 2016 at 03:32:04PM +0100, Tommaso Cucinotta wrote:
>> >+    struct sched_param param = { .sched_priority = 50 };
>>
>> won't you have a tunable here? (sysctl?)
>
> You can use the regular userspace tools, like schedtool and chrt to set
> priorities.

I wanted to get some help from you on this Peter. The out of tree Interactive
governor has always used MAX_RT_PRIORITY - 1 here instead of 50.

But Steve started with 50. What do you think should the value be ?

--
viresh

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[PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-11 11:30 +0100
  Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-11-11 15:40 +0100
    Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Peter Zijlstra <peterz@infradead.org> - 2016-11-11 15:40 +0100
      Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-12 06:30 +0100
        Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Peter Zijlstra <peterz@infradead.org> - 2016-11-14 10:30 +0100
          Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-14 11:30 +0100
    Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-12 06:30 +0100
  Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-11 23:20 +0100
    Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue  to SCHED_FIFO task Saravana Kannan <skannan@codeaurora.org> - 2016-11-12 02:40 +0100
      Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-12 06:30 +0100
        Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-14 06:40 +0100
      Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-13 15:40 +0100
        Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Steve Muckle <smuckle.linux@gmail.com> - 2016-11-13 20:50 +0100
          Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-13 23:50 +0100
            Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-14 07:40 +0100
    Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Viresh Kumar <viresh.kumar@linaro.org> - 2016-11-12 06:30 +0100
    Re: [PATCH 2/3] cpufreq: schedutil: move slow path from workqueue to  SCHED_FIFO task Steve Muckle <smuckle.linux@gmail.com> - 2016-11-13 21:00 +0100

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