Re: cpuinfo shows wrong MHz value

Matthew Garrett
2009-02-16T18:19:48Z

On Mon, Feb 16, 2009 at 07:13:15PM +0100, Thomas Renninger wrote:
> On Monday 16 February 2009 17:50:08 Matthew Garrett wrote:
> > On Mon, Feb 16, 2009 at 02:19:50PM +0000, Thomas Renninger wrote:
> >
> > > There should be a message when this driver is loaded like:
> > > "This driver is broken. Don't use it, don't complain."
> >
> > Please don't. It's perfectly valid (if dumb) for machines to depend on
> > the CPU for passive cooling even if they don't expose any P or T states.
> No it's not valid. If the BIOS does not export these, it could be for
> a reason.

We have to deal with insane BIOSes on a regular basis.

> > In that case p4-clockmod is the only code that can manage it. The
> > removal of the user-visible cpufreq interface should be a strong enough
> > hint that it's not intended for speed control.
> AFAIK p4-clockmode is still not synchronized with ACPI throttling?

It ought to work fine with any systems using MSR-based throttling.

> Anyway, I better do not answer on p4_clockmode complaints anymore and
> simply delete them, it's just a waste of time.

Feel free.

--
Matthew Garrett | mjg59@srcf.ucam.org