On Sunday 06 December 2009, Arun R Bharadwaj wrote:

Peter objected to the idea of integrating this with the old pm_idle
because it has already caused a lot of problems on x86 and we wouldn't
want to be doing the same mistake on POWER. The discussion related to
that could be found here http://lkml.org/lkml/2009/8/26/233

And BenH has sketched how it should be done on ppc, in that thread:
http://lkml.org/lkml/2009/8/26/624 AFAIS this comment is still valid for v10.

Not only I would like to understand what is the conceptual idea behind the 
other changes. Nothing wrong with cleanups, but there's got to be a purpose 
and benefits.

	Torsten