Re: [PATCH v2 2/5] preempt/dynamic: Introduce preempt mode accessors

From: Mike Galbraith
Date: Thu Nov 11 2021 - 06:10:48 EST


On Thu, 2021-11-11 at 10:56 +0000, Valentin Schneider wrote:
> On 11/11/21 11:32, Mike Galbraith wrote:
> > On Thu, 2021-11-11 at 10:36 +0100, Marco Elver wrote:
> > > I guess the question is if is_preempt_full() should be true also if
> > > is_preempt_rt() is true?
> >
> > That's what CONFIG_PREEMPTION is.  More could follow, but it was added
> > to allow multiple models to say "preemptible".
> >
>
> That's what I was gonna say, but you can have CONFIG_PREEMPTION while being
> is_preempt_none() due to PREEMPT_DYNAMIC...

Ah, right.. this is gonna take some getting used to.

-Mike