Re: stable: commit "cpuidle: menu: Avoid discarding useful information" causes regressions

[Rafael J. Wysocki]

On Thu, Oct 16, 2025 at 6:59 AM Sergey Senozhatsky
<senozhatsky@xxxxxxxxxxxx> wrote:
>
> On (25/10/15 07:11), Doug Smythies wrote:
> > >> What thermal limiting methods are being used? Is idle injection being used? Or CPU frequency limiting or both.
> > >
> > > How do I find out?
> >
> > From the turbostat data you do not appear to be using the TCC offset method. This line:
> >
> > cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x0f690080 (105 C)
> >
> > whereas on my test computer, using the TCC offset method, shows:
> >
> >  cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x14641422 (80 C) (100 default - 20 offset)
> >
> > To check if thermal is being used do:
> >
> > systemctl status thermal
>
> chromeos doesn't use systemd.
> A quick ps grep doesn't show any thermal-related processes.

All right, let's see what RAPL on that system has to say.

Please send the output of "grep .
/sys/class/powercap/intel-rapl/intel-rapl:0/constraint_*"