Re: latest -git: WARNING: at arch/x86/kernel/ipi.c:123 send_IPI_mask_bitmask+0xc3/0xe0()

Dave Jones
2008-08-25T20:50:30Z

On Mon, Aug 25, 2008 at 10:36:49PM +0200, Andi Kleen wrote:

> > If we get a thermal event that was caused by temporary
> > increased workload, temperature will drop off again when that workload
> > is complete.
>
> But none of the cpufreq governours do this. They only care about
> load, not about temperature.

Which is good enough to stop p4 laptops from shutting down as
soon as they've finished booting up.

> > For sustained workloads we'd get additional thermal events, at which
> > time we make a decision "ok, we've throttled as far as we can, and
> > things are still going badly, power off".
>
> That is what the ACPI driver does when the trip point is reached.

yes, except for that "we've throttled" part.

Dave

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