Re: [v6 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle powermanagement code in x86, cleanup drivers/cpuidle/cpuidle.c andintroduce cpuidle to POWER.

[Arun R Bharadwaj]

* Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> [2009-09-22 16:55:27]:

Hi Len, (or other acpi folks),

I had a question regarding ACPI-cpuidle interaction in the current
implementation.

Currently, every cpu (i.e. acpi_processor) registers to cpuidle as
a cpuidle_device. So every cpu has to go through the process of
setting up the idle states and then registering as a cpuidle device.

What exactly is the reason behind this?

Is this really necessary or can we have a system-wide one-time registering
to cpuidle by ACPI?

I'm currently in the process of enabling cpuidle for POWER systems and
find that having a system-wide registering mechanism to be a cleaner
design.

--arun
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