From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Deucher <alexdeucher@gmail.com>
Subject: Re: [Bug 72921] DPM Power Cycle with AMD A8-6600K & MSI FM2-A55M-E33
Date: Fri, 20 Jun 2014 10:20:56 -0400
Message-ID: <CADnq5_PEk7=ej6xSuJS-p8oQOZ2=YOYPcYOdz6ywCjniqP4bvg@mail.gmail.com>
References: <bug-72921-502@http.bugs.freedesktop.org/>
 <bug-72921-502-Y5hx5be63o@http.bugs.freedesktop.org/>
 <53A4411B.4040607@gmail.com>
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To: Laszlo Kertesz <laszlo.kertesz@gmail.com>
Cc: Maling list - DRI developers <dri-devel@lists.freedesktop.org>
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On Fri, Jun 20, 2014 at 10:11 AM, Laszlo Kertesz
<laszlo.kertesz@gmail.com> wrote:
>
> On 6/20/2014 4:30 PM, bugzilla-daemon@freedesktop.org wrote:
>
> Comment # 25 on bug 72921 from Alex Deucher
>
> (In reply to comment #24)
>> Created attachment 101420 [details]
>> dmesg with working bapm patch
>>
>> I can confirm that the latter patch (attachment 101191 [details] [review]
>> [review])
>> solves the issue for me, I haven't tried the earlier patch because it
>> didn't
>> work for Collin. I can re-test that if that's still useful.
>>
>
> Probably not necessary.
>
>> Attaching dmesg; I compared the probed power states and they appear
>> similar.
>> What's bapm?
>
> It allows the CPU and GPU to share TDP headroom.  E.g., if the CPU isn't
> busy,
> the the GPU can user higher performance states longer and vice versa.
>
> And what happens if its disabled?
> Because as it stands now, the CPU and GPU are still throttled if heated up.
> The CPU's turbo core is disabled, is it the same for the GPU?
>

Right.  They don't share the headroom if it is disabled.

Alex

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