Re: [Bugme-new] [Bug 12826] New: cpufreq driver do not expose all data and configuration to /sys

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On Fri, Mar 06, 2009 at 07:07:59PM -0800, Andrew Morton wrote:
> On Sat, 7 Mar 2009 02:57:43 +0000 Matthew Garrett <mjg@xxxxxxxxxx> wrote:
> 
> > On Fri, Mar 06, 2009 at 06:50:42PM -0800, Andrew Morton wrote:
> > 
> > > eh?  So we deliberately added a regression?
> > 
> > No, we removed functionality that doesn't save power from a subsystem 
> > that's designed to save power.
> 
> That's just stupid spin - stop wasting our time.

No, really.

> The userspace interface to this driver changed in an incompatible
> fashion.  This can lead to failure (and hence premature termination) of
> userspace configuration scripts and in this case (at least) it has led
> to CPU overheating.

Every single case of userspace using this interface is a bug. It's 
either wasting power or unnecessarily reducing performance.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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