Re: remove cpu hotplug bustification in cpufreq.

From: Erik Mouw
Date: Tue Jul 25 2006 - 11:04:06 EST


On Mon, Jul 24, 2006 at 05:59:23PM -0700, Linus Torvalds wrote:
> On Mon, 24 Jul 2006, Chuck Ebbert wrote:
> >
> > I thought just the 'ondemand' governor was a problem?
>
> The ondemand governor seems to be singled out not because it has unique
> problems, but because it seems to be used by Fedora Core for some strange
> reason.
>
> I would judge that any bugs in cpufreq_ondemand.c are likely equally
> evident in cpufreq_conservative.c, for example. I think the two have the
> same background, and seem to have the same broken locking.

The "conservative" governor switches less often, so the locking
condition just happens less often.

After some strange lockups with 2.6.18-rc* I switched from "ondemand"
to "conservative" and now my laptop survives the night. Sheer luck, I
guess. I'd rather switch to "powersave" or "performance".


Erik

--
+-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
| Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
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