Re: [PATCH 4/4] sched: Rename arch_update_thermal_pressure into arch_update_hw_pressure

[Vincent Guittot]

On Thu, 14 Dec 2023 at 09:53, Lukasz Luba <lukasz.luba@xxxxxxx> wrote:
>
>
>
> On 12/14/23 08:36, Vincent Guittot wrote:
> > On Thu, 14 Dec 2023 at 09:30, Lukasz Luba <lukasz.luba@xxxxxxx> wrote:
> >>
> >>
> >> On 12/12/23 14:27, Vincent Guittot wrote:
>
> [snip]
>
> >>>        update_rq_clock(rq);
> >>> -     thermal_pressure = arch_scale_thermal_pressure(cpu_of(rq));
> >>> -     update_thermal_load_avg(rq_clock_thermal(rq), rq, thermal_pressure);
> >>> +     hw_pressure = arch_scale_hw_pressure(cpu_of(rq));
> >>> +     update_hw_load_avg(rq_clock_task(rq), rq, hw_pressure);
> >>
> >> We switch to task clock here, could you tell me why?
> >> Don't we have to maintain the boot command parameter for the shift?
> >
> > This should have been part of the patch5 that I finally removed. IMO,
> > the additional time shift with rq_clock_thermal is no more needed now
> > that we have 2 separates signals
> >
>
> I didn't like the left-shift which causes the signal to converge slowly.
> I rather wanted right-shift to converge (react faster), so you have my
> vote for this change. Also, I agree that with the two-signal approach
> this shift trick can go away now. I just worry about the dropped boot
> parameter.
>
> So, are going to send that patach5 which removes the
> 'sched_thermal_decay_shift' and documentation bit?

Yes, i will add it back for the next version