[tesla-dev] interfaces for Powertop

[Eric Saxe]

Li, Aubrey wrote:
> On Saturday, October 27, 2007 8:01 AM, tesla-dev-bounces at opensolaris.org
> wrote:
>
>   
>> The existing powertop implementation makes heavy use of /proc
>> under Linux.
>> For the necessary interfaces, here's what I'm thinking:
>>
>>    - C-state information
>>       - Number of C-states, and amount of time system is spending in
>> each one 
>>       - Number of C-states can eventually be exported through a kstat.
>>     
>
> Where do you plan to add a kstat if there is no C-state driver?
>   
My guess is that the code that eventually ends up enumerating c-states 
can make available a kstat, similar to what's currently
done for P-states. It's probably not a show stopper for now though, 
since we don't support any other C-states besides
C1 :)

-Eric