[Bug 12826] cpufreq driver do not expose all data and configuration to /sys

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http://bugzilla.kernel.org/show_bug.cgi?id=12826





------- Comment #5 from anonymous@xxxxxxxxxxxxxxxxxxxx  2009-03-06 15:30 -------
Reply-To: akpm@xxxxxxxxxxxxxxxxxxxx


(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Fri,  6 Mar 2009 05:21:50 -0800 (PST)
bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=12826
> 
>            Summary: cpufreq driver do not expose all data and configuration
>                     to /sys
>            Product: Power Management
>            Version: 2.5
>      KernelVersion: 2.6.29-rc7
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: cpufreq
>         AssignedTo: cpufreq@xxxxxxxxxxxxxxx
>         ReportedBy: uzytkownik2@xxxxxxxxx
> 
> 
> Latest working kernel version: 2.6.28
> Earliest failing kernel version: 2.6.29-rc7 (also -rc5 and -rc6 but tested only
> with patchset)
> Distribution: Gentoo
> Hardware Environment: Thinkpad R51e
> Software Environment: Standard stack (although reproduced with only /bin/sh as
> init)
> Problem Description:
> Contrary to documentation there are little files controlling the cpufreq
> 
> # ls /sys/devices/system/cpu/cpu0/cpufreq/
> conservative  stats
> # ls /sys/devices/system/cpu/cpu0/cpufreq/conservative 
> down_threshold  ignore_nice_load      sampling_rate      sampling_rate_min
> freq_step       sampling_down_factor  sampling_rate_max  up_threshold
> 
> Steps to reproduce:
> Boot

I'd say that

commit 8529154ec3f3ac20344c65b7a040c604c7af7651
Author: Herton Ronaldo Krzesinski <herton@xxxxxxxxxxxxxxx>
Date:   Sat Nov 15 17:02:46 2008 -0200

    [CPUFREQ] Add Celeron Core support to p4-clockmod.

has a good chance of being the cause of this regression?


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