Re: [PATCH 1/2] x86, mce, therm_throt: Optimize logging of thermal throttle messages

From: Borislav Petkov
Date: Fri Oct 18 2019 - 02:46:53 EST


On Thu, Oct 17, 2019 at 11:53:18PM +0000, Luck, Tony wrote:
> > * we throttle the machine from within the kernel - whatever that may mean
> > * if that doesn't help, we stop scheduling !root tasks
> > * if that doesn't help, we halt
>
> The silicon will do that "halt" step all by itself if the temperature
> continues to rise and hits the highest of the temperature thresholds.

Oh, I know that. But that is not of our concern - I believe we're
discussing right now what to do when the lower, softer limits are
reached and the thermal interrupt fires.

When the hw forces HLT, it means we didn't do a very good job earlier,
before it got so hot.

:-)

--
Regards/Gruss,
Boris.

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