Re: [STABLE 5.15][PATCH] thermal: devfreq_cooling: Fix perf state when calculate dfc res_util

[Lukasz Luba]

On 4/5/24 10:33, Greg KH wrote:
> On Thu, Apr 04, 2024 at 11:13:29AM +0100, Lukasz Luba wrote:
> > From: Ye Zhang <ye.zhang@xxxxxxxxxxxxxx>
> >
> > The issue occurs when the devfreq cooling device uses the EM power model
> > and the get_real_power() callback is provided by the driver.
> >
> > The EM power table is sorted ascending，can't index the table by cooling
> > device state，so convert cooling state to performance state by
> > dfc->max_state - dfc->capped_state.
> >
> > Fixes: 615510fe13bd ("thermal: devfreq_cooling: remove old power model and use EM")
> > Cc: 5.11+ <stable@xxxxxxxxxxxxxxx> # 5.11+
> > Signed-off-by: Ye Zhang <ye.zhang@xxxxxxxxxxxxxx>
> > Reviewed-by: Dhruva Gole <d-gole@xxxxxx>
> > Reviewed-by: Lukasz Luba <lukasz.luba@xxxxxxx>
> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> > Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
> > ---
> >
> > Hi Greg,
> >
> > I have solved small backporting conflict to that v5.15.
> > The patch is based on tag v5.15.99 and it's for this
> > failing backport:
> > https://lore.kernel.org/stable/2024033050-imitation-unmixed-ef53@gregkh/
>
> Thanks, next time all that I need is the git id of this in Linus's tree,
> no need to point to a previous FAILED email.

OK, I will remember.

Regards,
Lukasz