[PATCH] Added APA terms

[Richi Dubey]

Hi,

Please ignore the first commit. I sent it directly from rtems-qual which
was a mistake.

Thanks

On Mon, Jun 15, 2020 at 8:08 PM Richi Dubey <richidubey at gmail.com> wrote:

> ---
>  c-user/glossary.rst | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/c-user/glossary.rst b/c-user/glossary.rst
> index 86350a8..589d41b 100644
> --- a/c-user/glossary.rst
> +++ b/c-user/glossary.rst
> @@ -1,6 +1,6 @@
>  .. SPDX-License-Identifier: CC-BY-SA-4.0
>
> -.. Copyright (C) 2017, 2019 embedded brains GmbH (
> http://www.embedded-brains.de)
> +.. Copyright (C) 2017, 2020 embedded brains GmbH (
> http://www.embedded-brains.de)
>  .. Copyright (C) 1988, 1998 On-Line Applications Research Corporation
> (OAR)
>
>  Glossary
> @@ -16,6 +16,10 @@ Glossary
>          A term used to describe an object which has been created by an
>          application.
>
> +    APA
> +        Arbitrary Processor Affinity.
> +        In this model, a thread is allowed to have an arbitrary affinity
> to the processor set, rather than a global mapping from one thread to all
> processors or one thread to one processor. It has two variants, :term:`Weak
> APA` and :term:`Strong APA`
> +
>      aperiodic task
>          A task which must execute only at irregular intervals and has
> only a soft
>          deadline.
> @@ -777,6 +781,9 @@ Glossary
>          :term:`return value` to indicate a successful operation or error
>          conditions.
>
> +    Strong APA
> +        Strong APA is a specialization of :term:`APA`. In this model, on
> the arrival of a :term:`thread`, every thread reachable from the newly
> arrived thread is checked to see if an existing thread can be shifted (or
> deallocated its processor) and the newly arrived thread take its place if
> the newly arrived thread has a higher priority. Similar analysis is done
> when a thread finishes its execution (Here, the terms task and thread have
> interchangeable definitions). :cite:`Cerqueira:2014:LPA`
> +
>      suspend
>          A term used to describe a task that is not competing for the CPU
> because it
>          has had a ``rtems_task_suspend`` directive.
> @@ -905,6 +912,10 @@ Glossary
>          Message queues, regions, and semaphores have a wait queue
> associated with
>          them.
>
> +    Weak APA
> +        Weak APA is a specialization of :term:`APA`. This refers to
> Linux's pull push implementation of APA model. On the arrival of a thread,
> the thread is scheduled when a processor in its affinity set is idle or a
> processor is executing a thread which is at a lower priority.
> +        :cite:`Cerqueira:2014:LPA`
> +
>      YAML
>          This term is an acronym for `YAML Ain't Markup Language <
> https://yaml.org/>`_.
>
> --
> 2.17.1
>
>
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