Re: PowerOP 0/3: System power operating point management API
From: Todd Poynor
Date: Tue Aug 16 2005 - 20:53:03 EST
Dominik Brodowski wrote:
A small add-on:
We need to make sure that we're capable of handling smart CPUs like Transmeta
Crusoe processors in a sane way. This means
b) Setting of "values"
is optional if the hardware itself can be set to a min/max value (step a
above in previous mail).
Although I haven't looked into the Crusoe processor support, it may be
that there is a different set of power parameters, not cpu speed
directly, that are appropriate to manage on these platforms (after a
brief look, seems to be a range of frequencies and some sort of flags)?
If so, these sorts of machine-specific power parameters are what
PowerOP is trying to address, allowing management of the underlying
machine-specific stuff to upper layers that may be presenting an
abstracted view of power/performance, such as CPU speed or speed ranges,
to the user. Thanks,
--
Todd
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