Looks good. On Wed, May 12, 2021 at 8:07 AM Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote:
> --- > c-user/glossary.rst | 41 ++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 38 insertions(+), 3 deletions(-) > > diff --git a/c-user/glossary.rst b/c-user/glossary.rst > index b3527a7..5a06c10 100644 > --- a/c-user/glossary.rst > +++ b/c-user/glossary.rst > @@ -194,6 +194,14 @@ Glossary > This term is an acronym for Cathode Ray Tube. Normally used in > reference to > the man-machine interface. > > + current priority > + The current priority of a :term:`task` is the :term:`task > priority` with > + respect to the :term:`home scheduler` of the task. It is an > aggregation of > + the :term:`real priority` and temporary priority adjustments due > to locking > + protocols, the rate-monotonic period objects on some schedulers > such as EDF, > + and the :term:`POSIX` sporadic server. The current priority is an > + :term:`eligible priority`. > + > deadline > A fixed time limit by which a task must have completed a set of > actions. > Beyond this point, the results are of reduced value and may even > be > @@ -246,6 +254,12 @@ Glossary > This term is an acronym for > `Executable and Linkable Format < > https://en.wikipedia.org/wiki/Executable_and_Linkable_Format>`_. > > + eligible priority > + An eligible priority of a :term:`task` is the :term:`task > priority` with > + respect to the corresponding :term:`eligible scheduler` of the > task. An > + eligible priority is either the :term:`current priority` and a > + :term:`helping priority` of a task. > + > eligible scheduler > An eligible scheduler of a :term:`task` is a :term:`scheduler` > which can be > used by the task to allocate a processor for the task. > @@ -366,6 +380,11 @@ Glossary > dispatch is marked as necessary, then the next thread dispatch > will make > the heir task the executing task. > > + helping priority > + A helping priority of a :term:`task` is the :term:`task priority` > with > + respect to the corresponding :term:`helping scheduler` of the > task. A > + helping priority is an :term:`eligible priority`. > + > helping scheduler > A helping scheduler of a :term:`task` is a :term:`scheduler` > which is a > :term:`eligible scheduler` and which is not the :term:`home > scheduler` of > @@ -632,9 +651,9 @@ Glossary > another task. > > priority > - A mechanism used to represent the relative importance of an > element in a > - set of items. RTEMS uses priority to determine which task should > - execute. > + The priority is a mechanism used to represent the relative > importance of an > + element in a set of items. RTEMS uses :term:`task priorities > <task priority>` to determine > + which :term:`task` should execute. > > priority boosting > A simple approach to extend the priority inheritance protocol for > @@ -686,6 +705,14 @@ Glossary > decided that other tasks are currently more important. A task > that is > ready to execute and has a processor assigned is called scheduled. > > + real priority > + Each :term:`task` has exactly one real priority. The real > priority is > + always with respect to the :term:`home scheduler` of a task. It > is defined > + during task initialization. It may be changed by directives such > as > + :c:func:`rtems_task_set_priority` and > + :c:func:`rtems_task_set_scheduler`. The real priority is the > foundation > + of the :term:`current priority`. > + > real-time > A term used to describe systems which are characterized by > requiring > deterministic response times to external stimuli. The external > stimuli > @@ -959,6 +986,14 @@ Glossary > Task migration happens in case a task stops execution on one > processor > and resumes execution on another processor. > > + task priority > + A task priority of a :term:`task` determines its importance with > respect to > + other tasks. The scheduler use task priorities to determine which > + :term:`ready task` gets a processor allocated. The > + :term:`eligible priorities <eligible priority>` of a task define > the position of the task in a > + :term:`wait queue` which uses the priority discipline. Each task > has at > + least the :term:`real priority`. > + > task processor affinity > The set of processors on which a task is allowed to execute. > > -- > 2.26.2 > > _______________________________________________ > devel mailing list > devel@rtems.org > http://lists.rtems.org/mailman/listinfo/devel >
_______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
