RE: [PATCH] Determine latency from ACPI

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> > At this time, the PowerNow! driver for K8 uses an experimentally 
> > derived formula to calculate transition latency.  The value it
> > provides is orders of magnitude too large on modern systems.
> > This patch replaces the formula with ACPI _PSS latency values
> > for more accuracy and better performance.
> > 
> > I've tested it on two 2nd generation Opteron systems, a 3rd
> > generation Operton system, and a Turion X2 without seeing any
> > stability problems.
> > 
> 
> There are a tremendous number of changes to this file in linux-next. 
> It's easy to make the patch apply, but my confidence that the result
> will actually work is insufficiently high.
> 
> 
> Also, I notice that linux-next's
> 
> commit 8ad2aedc2129f4e791dc7e2e89eabdcb2145d16c
> broke the layout of powernow_k8_acpi_pst_values() most unpleasantly
> (the closing brace).

I'll clean up the patch against linux-next and resubmit 
with a better name.

-Mark Langsdorf
Operating System Research Center
AMD

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