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

[Rafael J. Wysocki]

On Tue, Oct 14, 2025 at 3:59 PM Christian Loehle
<christian.loehle@xxxxxxx> wrote:
>
> On 10/14/25 14:56, Sergey Senozhatsky wrote:
> > On (25/10/14 15:47), Rafael J. Wysocki wrote:
> >> On Tue, Oct 14, 2025 at 12:23 PM Sergey Senozhatsky
> >> <senozhatsky@xxxxxxxxxxxx> wrote:
> >>>
> >>>> Any details would be much appreciated.
> >>>> How do the idle state usages differ with and without
> >>>> "cpuidle: menu: Avoid discarding useful information"?
> >>>> What do the idle states look like in your platform?
> >>>
> >>> Sure, I can run tests.
> >>
> >> Would it be possible to check if the mainline has this issue?  That
> >> is, compare the benchmark results on unmodified 6.17 (say) and on 6.17
> >> with commit 85975daeaa4 reverted?
> >
> > I don't think mainline kernel can run on those devices (due to
> > a bunch of downstream patches).  Best bet is 6.12, I guess.
>
> Depending on what Rafael is expecting here you might just get
> away with copying menu.c from mainline, the interactions to other
> subsystems are limited fortunately.

Yeah, that'd be sufficiently close.