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Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with cpufreq core

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Hi Viresh,

I have checkout your branch at newest commit:
908063832c268f8add94
I have built it and run it on my Juno r2.
I have some python tests for IPA and I run one of them.

I seen a few issues so I have created a patch just
to be able to run IPA.
My next email will have the patch so you can see the changes.

IPA does not work with this patch set.
I have tested two source codes from your repo:
1. your change 908063832c268f8add94
2. your base 8f506e0faf4e2a4a0bde9f9b1

In case 1. IPA does not work - temperature rises to 83degC
in case 2. works - temperature is limited to 65degC.

On Monday I can allocate more time for it.

Regards,
Lukasz


On 18/04/17 11:38, Viresh Kumar wrote:
> On 17-04-17, 10:34, Eduardo Valentin wrote:
>> Hey,
>>
>> On Mon, Apr 17, 2017 at 11:31:45AM +0530, Viresh Kumar wrote:
>>> Hi Guys,
>>>
>>> The cpu_cooling driver is designed to use CPU frequency scaling to avoid
>>> high thermal states for a platform. But it wasn't glued really well with
>>> cpufreq core.
>>>
>>> This series tries to improve interactions between cpufreq core and
>>> cpu_cooling driver and does some fixes/cleanups to the cpu_cooling
>>> driver.
>>
>>
>> Can you please be more specific of what exactly is not gluing
>> properly/really well? I like refactoring, as long as well justified.
>>
>> Do you see anything broken currently?
>
> It wasn't broken really but the same information is scattered around
> and it wasn't clear on which one is the best one refer. For example,
> clipped-cpus is copied from the policy structure, but the policy->cpus
> thing can get updated later on, while the clipped-cpus never got
> updated. It makes more sense to get rid of the copies we are keeping
> and reuse the real fields, i.e. use the cpufreq policy directly in
> cpu_cooling.
>
> And then it caused lots of cleanups as well..
>
>>> I have tested it on ARM 32 (exynos) and 64 bit (hikey) boards and have
>>> pushed them for 0-day build bot and kernel CI testing as well. We should
>>> know if something is broken with these.
>>
>> Nice. What governors did you try? Have you checked "power_allocator" by
>> any chance?
>
> I tried setting all the governors including power_allocator on my
> exynos board, and didn't see anything broken. My branch also got
> tested by kernel CI bot for build and boot tests on a wide range of
> ARM boards and I didn't see any bad reports due to this set. So it
> should be okay.
>
>>>
>>> @Javi: It would be good if you can give them a test, specially because
>>> of your work on the "power" specific bits in the driver.
>>>
>>
>>
>> @Javi, are you still around? This needs to be validated in terms of how
>> the cdev states and power models are computed. Just to make sure we are
>> in one piece. Copying the ARM folks too, Punit?.
>
> And yes, I specifically wanted Javi (or some other ARM guy) to test
> this stuff out. Looks like Lukasz will help out now.
>
> Thanks to all of you :)
>

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[PATCH V2 00/17] thermal: cpu_cooling: improve interaction with cpufreq core Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 06/17] thermal: cpu_cooling: get rid of a variable in cpufreq_set_cur_state() Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 09/17] thermal: cpu_cooling: store cpufreq policy Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 07/17] thermal: cpu_cooling: use cpufreq_policy to register cooling device Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 04/17] thermal: cpu_cooling: replace cool_dev with cdev Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 10/17] thermal: cpu_cooling: OPPs are registered for all CPUs Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 02/17] thermal: cpu_cooling: rearrange globals Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  [PATCH V2 12/17] thermal: cpu_cooling: merge frequency and power tables Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-17 08:10 +0200
  Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Eduardo Valentin <edubezval@gmail.com> - 2017-04-17 19:40 +0200
    Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Eduardo Valentin <edubezval@gmail.com> - 2017-04-17 20:00 +0200
      Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Lukasz Luba <lukasz.luba@arm.com> - 2017-04-18 09:30 +0200
    Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-18 12:40 +0200
      Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Lukasz Luba <lukasz.luba@arm.com> - 2017-04-18 16:50 +0200
        [PATCH] thermal: fix cpu cooling initialization Lukasz Luba <lukasz.luba@arm.com> - 2017-04-18 17:00 +0200
        Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-19 07:30 +0200
          Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Viresh Kumar <viresh.kumar@linaro.org> - 2017-04-24 12:50 +0200
          Re: [PATCH V2 00/17] thermal: cpu_cooling: improve interaction with  cpufreq core Lukasz Luba <lukasz.luba@arm.com> - 2017-04-24 12:50 +0200

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