APA Scheduler Documentation Missing?

[Sebastian Huber]

On 23/05/18 17:43, Joel Sherrill wrote:
> Hi
>
> Looking at the list of schedulers available in confdefs.h based on the
> following comment block:
>
> *  - CONFIGURE_SCHEDULER_PRIORITY - Deterministic Priority Scheduler
>  *  - CONFIGURE_SCHEDULER_PRIORITY_SMP - Deterministic Priority SMP 
> Scheduler
>  *  - CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP - Deterministic
>  *    Priority SMP Affinity Scheduler
>  *  - CONFIGURE_SCHEDULER_STRONG_APA - Strong APA Scheduler
>  *  - CONFIGURE_SCHEDULER_SIMPLE - Light-weight Priority Scheduler
>  *  - CONFIGURE_SCHEDULER_SIMPLE_SMP - Simple SMP Priority Scheduler
>  *  - CONFIGURE_SCHEDULER_EDF - EDF Scheduler
>  *  - CONFIGURE_SCHEDULER_EDF_SMP - EDF SMP Scheduler
>  *  - CONFIGURE_SCHEDULER_CBS - CBS Scheduler
>  *  - CONFIGURE_SCHEDULER_USER  - user provided scheduler
>  *
>
> I don't think Strong APA is documented in configuring a system or
> scheduler concepts. Arbitrary Priority is used as the name.
>
> I suspect most of the information is here but there is some naming
> inconsistency and APA as an acronym or the configure_xxx constant
> is not documented.

The scheduler configured with CONFIGURE_SCHEDULER_STRONG_APA has only a 
stub implementation. It should not be used.

-- 
Sebastian Huber, embedded brains GmbH

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