[tesla-dev] _PSD -> Power Processor Groups

[Eric Saxe]

Hi Mark, Anup,

I'm still working on the capturing what we had talked about last week 
into the Power Aware Dispatcher design doc draft (still working on it).

With respect to the prototype, I'm interested in interfacing with the 
CPU PM driver to get the information necessary to construct the power 
processor groups....so that I can experiment with the dispatcher 
policies. In thinking about this, and thinking back to last week, the 
platform independent CPU "power manager", would interface with the CPU 
PM driver, to enumerate the power manageable CPU resources, and the 
associated abstracted states.

I'm wondering if you think it makes sense for the CPU power manager to 
export the interfaces to the Processor Grouping Framework. Please see 
the attached figure...

The idea is for the Processor Grouping Framework to query the CPU Power 
Manager for the CPU's power grouping information, and the CPU power 
manager in turn would get this from the platform dependent CPU PM 
driver, which would get it from ACPI, or the sun4v MD, etc.

Have a nice weekend...
-Eric


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