linux-kernel - Re: Problem with cpufreq and i5 since post 3.9.0

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Date:	Sat, 28 Dec 2013 00:09:01 +0000
From:	David Woodfall <dave@...oodfall.net>
To:	linux-kernel@...r.kernel.org
Subject: Re: Problem with cpufreq and i5 since post 3.9.0

On (27/12/13 19:53), Dave Woodfall <dave@...oodfall.net> put forth the proposition:
>On (27/12/13 20:44), Heinz Diehl <htd@...cy-poultry.org> put forth the proposition:
>>On 27.12.2013, David Woodfall wrote:
>>
>>>But any of the newer kernel versions I've tested only give me
>>>performance and powersave.
>>
>>I don't use any Fedora kernel, so I can't tell which governors are
>>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
>>in the respective .config file for your installed kernel.
>>
>>In short: It seems that only "performance" and "powersave" are
>>compiled in.
>
>No, I used the same .config in all versions that I tested. I've also
>tried setting them as modules rather than built-in. This is the stock
>slackware .config:
>
>CONFIG_CPU_FREQ=y
>CONFIG_CPU_FREQ_TABLE=m
>CONFIG_CPU_FREQ_GOV_COMMON=y
>CONFIG_CPU_FREQ_STAT=m
>CONFIG_CPU_FREQ_STAT_DETAILS=y
># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
>CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
>CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
>CONFIG_CPU_FREQ_GOV_POWERSAVE=m
>CONFIG_CPU_FREQ_GOV_USERSPACE=y
>CONFIG_CPU_FREQ_GOV_ONDEMAND=m
>CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
>
>And modprobing any governor module does not change the output of 
>scaling_available_governors.
>
>-Dave

I'm also experiencing this with a Intel G640 dual core machine.
Exactly the same effect.



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