Re: [PATCH] sched: Tweak default dynamic preempt mode selection

[Mike Galbraith]

On Mon, 2021-11-08 at 11:17 +0000, Valentin Schneider wrote:
> On 06/11/21 05:40, Mike Galbraith wrote:
> >
> > Starting with a 5.15 config, to select RT you currently must first
> > select a model you don't want, then reject PREEMPT_DYNAMIC and you'll
> > be offered the full menu of models immediately. With your patch added,
> > that became worse.  After rejecting PREEMPT_DYNAMIC, I had to go
> > through new 5.15+ options before finally being offered the full menu.
> >
>
> Do you mean at the syncconfig step?

Um, not sure what that is, but it sounds about right.

> I've only really played with upstream
> arm64 / x86 defconfigs and didn't have to fight with any prompts, though
> yes for x86 the default-y PREEMPT_DYNAMIC makes it a bit annoying to select
> PREEMPT_RT.

As long as RT depends on EXPERT it'll be a bit annoying regardless.  I
just thought it worth mention that what you want now and what RT will
presumably want upon merge completion appear to be mutually exclusive.

	-Mike