Re: [PATCH 4/5] intel_pstate: Remove C0 tracking

Dirk Brandewie
2014-05-12T14:39:42Z

On 05/12/2014 05:16 AM, Rafael J. Wysocki wrote:
> On Monday, May 12, 2014 05:27:25 AM Stratos Karafotis wrote:
>> Hi,
>>
>
> [cut]
>
>>
>> With this patch, my CPU (Core i7-3770 @ 3.90GHz) seems to never use lowest
>> frequencies. Even on an idle system I get always ~2GHz. Normally,
>> on an idle system it used to be 1.6GHz.
>> On very small loads (mp3 decoding) the CPU goes up to 2.7G GHz (it used to
>> be 1.6GHz)
>>
>> Reverting, this patch on my local build, the problem is resolved.
>
> Dirk, seriously, I can't regard this as a fix that can go into -rc6.
>

Ok I will resubmit after more testing

> Which of the other patch in the series are must-go for 3.15? [1-2/5] I guess?
> And do we need [2/5] it in -stable too?

1/5 is for stable it fixes a random MCE on baytrail.
2/5 is for stable it should have went with the stop_cpu patch
5/5 can go too since it is just adding CPU IDs

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