[tesla-dev] Things to do for c-state

[Li, Aubrey]

Bill.Holler wrote:

> Li, Aubrey wrote:
>> Bill Holler wrote:
>> 
>> 
>>> Here is a list of things left to do for c-state support on systems
>>> with c-state invariant TSCs.  The list is in no particular order:
>>> 
>>> 1. Develop code to use the HPET to wakeup a deep c-state idle cpu.
>>> 2. Develop code to detect deep c-state support in intel_cpupm_init()
>>>    similar to what speedstep_support() does for p-state support.
>>> 3. lAPIC timer fixup after deep c-state.
>>> 
>>> Did I miss anything???
>>> 
>> 
>> The c-state policy, now there is a simple one and ugly.
>> I'm not sure how it works with PAD, but I'd like to implement a new
>> one in the c-state driver. 
>> 
> 
> Go for it.  :-)
> I am not sure what the time schedule is for PAD.
> We should implement something now for testing before PAD is available.
> 
> The current c-state policy looks like it will work for now?
> 
> 
I think so, as long as the platform supports deep c-state up to C3.

-Aubrey