[PATCH v6 4/5] sched: Rename arch_update_thermal_pressure into arch_update_hw_pressure

Vincent Guittot vincent.guittot at linaro.org
Tue Apr 30 05:00:46 PDT 2024


H Konrad,

On Tue, 30 Apr 2024 at 13:23, Konrad Dybcio <konrad.dybcio at linaro.org> wrote:
>
> On 26.03.2024 10:16 AM, Vincent Guittot wrote:
> > Now that cpufreq provides a pressure value to the scheduler, rename
> > arch_update_thermal_pressure into HW pressure to reflect that it returns
> > a pressure applied by HW (i.e. with a high frequency change) and not
> > always related to thermal mitigation but also generated by max current
> > limitation as an example. Such high frequency signal needs filtering to be
> > smoothed and provide an value that reflects the average available capacity
> > into the scheduler time scale.
> >
> > Signed-off-by: Vincent Guittot <vincent.guittot at linaro.org>
> > Reviewed-by: Qais Yousef <qyousef at layalina.io>
> > Reviewed-by: Lukasz Luba <lukasz.luba at arm.com>
> > Tested-by: Lukasz Luba <lukasz.luba at arm.com>
> > ---
>
> Hi, I'm not quite sure how, but this commit specifically breaks booting
> on Qualcomm platforms with EAS..

This is the fix:
https://lore.kernel.org/lkml/20240425073709.379016-1-vincent.guittot@linaro.org/

>
> https://pastebin.com/raw/1Uh7u81x

Which platform is it ?
I tested it on dragonboard rb3 and it booted and run tests  even w/o the fix

>
> Konrad



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