linux-kernel - Re: [PATCH 3/3] ARM: exynos_defconfig: Enable Energy Model framework

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Date:   Thu, 6 Feb 2020 14:15:42 +0000
From:   Lukasz Luba <lukasz.luba@....com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     kgene@...nel.org, linux-arm-kernel@...ts.infradead.org,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        Chanwoo Choi <cw00.choi@...sung.com>, robh+dt@...nel.org,
        mark.rutland@....com,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>, dietmar.eggemann@....com
Subject: Re: [PATCH 3/3] ARM: exynos_defconfig: Enable Energy Model framework



On 2/6/20 12:59 PM, Krzysztof Kozlowski wrote:
> On Wed, 5 Feb 2020 at 13:49, Lukasz Luba <lukasz.luba@....com> wrote:
>>>> As mentioned in response to patch 1/3. The fist patch would create MC
>>>> domain, something different than Energy Model or EAS. The decisions in
>>>> the scheduler would be different.
>>>>
>>>> I can merge 1/3 and 3/3 if you like, though.
>>>
>>> I understand now that their independent. Still, they are part of one
>>> goal to tune the scheduler for Exynos platform. Splitting these looks
>>> too much, like enabling multiple drivers one after another.
>>>
>>> However if you provide numbers for each of cases (before patches, multi
>>> core scheduler, energy model with DTS), then I see benefit of splitting
>>> it.  Each commit would have its own rationale.  I am not sure if it is
>>> worth such investigation - that's just defconfig... distros might ignore
>>> it anyway.
>>
>> Good point, and I agree that it would require more investigation, for
>> which unfortunately I don't have currently spare cycles.
>>
>> Should I merge patch 1/3 and 3/3 and send the v2 with a cover letter
>> which would have the test results?
> 
> Yes, let's do this way.

Thank you, I will send the v2 then.

Regards,
Lukasz

> 
> Thanks for working on this!
> 
> Best regards,
> Krzysztof
>