Re: New cpufreq framework and drivers

> Date: Tue, 01 Feb 2005 11:01:49 -0800
> From: Nate Lawson <nate_at_root.org>
> Sender: owner-freebsd-acpi_at_freebsd.org
> 
> Eric Anderson wrote:
> > Nate Lawson wrote:
> > 
> >> Nate Lawson wrote:
> >>
> >>> Below is the first patch of cpufreq for wider testing.  It has the 
> >>> framework, cpu pseudodriver updates, and two hardware drivers -- ACPI 
> >>> performance states and SpeedStep-ICH.  It has had a lot of testing on 
> >>> supported hardware but needs wider testing before importing.  Other 
> >>> hardware drivers can be quickly ported to this interface, and I'm 
> >>> happy to assist their maintainers.
> >>>
> >>> http://www.root.org/~nate/freebsd/cpufreq.diff
> >>
> >>
> >>
> >> Sorry, I'm so familiar with the interface that I forgot to mention how 
> >> to use it.  To test, build a new kernel and modules.  Load one or both 
> >> of acpi_perf.ko and cpufreq.ko at boot time.  Type "sysctl dev.cpu" to 
> >> see the new freq and freq_levels output.  If you're a driver 
> >> maintainer, see sys/cpu.h and speedstep_ich.c or acpi_perf.c for an 
> >> example how to provide the driver interface.
> >>
> > 
> > Will this only work on -current, or also 5.3-stable?
> 
> It should work on -stable, modulo any diff fuzz.
> 
> -- 
> Nate
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> 

A bit more that fuzz, I'm afraid, but nothing that should take more than
a little effort, but it's not very difficult.

I am attaching diffs against -stable. Since it's your code, I did not
feel like I should be sending them to others. I'll leave it up to you as
to whether to post them. (And, it's possible that I messed something up,
too, although I did test it.) It requires -stable as of 12/8/2005 or newer.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman_at_es.net			Phone: +1 510 486-8634