[Techteam] XO-1.5 Kernel Update (i.e My Weekly Status)
Benjamin M. Schwartz
bmschwar at fas.harvard.edu
Mon Jul 20 16:48:03 EDT 2009
Paul Fox wrote:
> benjamin m. schwartz wrote:
> > cpuidle is already used by the kernel to select the ACPI state, but it is
> > possible to add more states as well. Therefore, it seems to me that the
> > logical thing to do is to add the "frozen" state to cpuidle's menu.
> perhaps this should be obvious, but can it handle S-states as
> well? because i believe that's the goal -- freeze the display
> and then go into S3.
My impression is that this has never been done, presumably due to the
absence of a DCON on other ACPI machines. I know nothing about kernel
internals or suspend-resume, so I cannot comment intelligently on the
difficulty of supporting S3+DCON in cpuidle.
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