Messages in this thread | | | Date | Tue, 9 Nov 2021 07:00:01 -0800 | From | Ricardo Neri <> | Subject | Re: [PATCH 5/7] thermal: intel: hfi: Enable notification interrupt |
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On Mon, Nov 08, 2021 at 10:01:04AM +0100, Peter Zijlstra wrote: > On Fri, Nov 05, 2021 at 06:33:10PM -0700, Ricardo Neri wrote: > > + /* > > + * On most systems, all CPUs in the package receive a package-level > > + * thermal interrupt when there is an HFI update. Since they all are > > + * dealing with the same update (as indicated by the update timestamp), > > + * it is sufficient to let a single CPU to acknowledge the update and > > + * schedule work to process it. > > + */ > > That's pretty crap hardware behaviour. Is there really no way to steer > these interrupts?
The HFI is a package-level thermal interrupt. Hence, all CPUs get it. AFAIK there is no way to steer the interrupts.
Thanks and BR, Ricardo
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