Re: [PATCH] Documentation: index.rst: add entry of other sub-directory

[Manuel Ebner]

On Wed, 2026-06-03 at 12:20 +0200, Sebastian Andrzej Siewior wrote:
> On 2026-06-03 10:04:31 [+0200], Manuel Ebner wrote:
> > add reference to scheduler/sched-rt-group.rst
> > 
> > Signed-off-by: Manuel Ebner <manuelebner@xxxxxxxxxxx>
> > ---
> >  Documentation/core-api/real-time/index.rst | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/core-api/real-time/index.rst b/Documentation/core-api/real-
> > time/index.rst
> > index f08d2395a22c..661b419e7f8f 100644
> > --- a/Documentation/core-api/real-time/index.rst
> > +++ b/Documentation/core-api/real-time/index.rst
> > @@ -15,3 +15,4 @@ the required changes compared to a non-PREEMPT_RT configuration.
> >     differences
> >     hardware
> >     architecture-porting
> > +   Real-Time group scheduling <../../scheduler/sched-rt-group>
> 
> Have you been using this and are referencing this because it is useful
> or did you just happen to find it?

I happened to find it.

> People have been complaining about this 

Maybe with the help of them we can figure out what's happening.
adding linux-rt-user@xxxxxxxxxxxxxxx 

> and I *think* it fails to work
> in multi-CPU scenarios (it might work if the task is restricted to
> single CPU usage). Not entirely certain. But complains, that I am
> certain of.
> There is replacement underway to utilize SCHED_DL for this as in
> "Hierarchical Constant Bandwidth Server (HCBS)"
> 	https://lore.kernel.org/all/20260430213835.62217-1-yurand2000@xxxxxxxxx/

will look into this.
> 
> Sebastian

Thanks for the feedback
 Manuel