From 8010b6e3ca18a25ac580f8ce9d7f29440a6c242c Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 7 Mar 2018 13:43:07 +0100 Subject: c-user: Update CONFIGURE_SCHEDULER_NAME --- c-user/configuring_a_system.rst | 16 +++++++++------- c-user/scheduling_concepts.rst | 20 ++++++++++++++++++-- 2 files changed, 27 insertions(+), 9 deletions(-) (limited to 'c-user') diff --git a/c-user/configuring_a_system.rst b/c-user/configuring_a_system.rst index 6b7f487..ed32606 100644 --- a/c-user/configuring_a_system.rst +++ b/c-user/configuring_a_system.rst @@ -3558,13 +3558,15 @@ RANGE: DEFAULT VALUE: The default name is - - ``"UCBS"`` for the Uni-Processor CBS scheduler, - - ``"UEDF"`` for the Uni-Processor EDF scheduler, - - ``"UPD "`` for the Uni-Processor Deterministic Priority scheduler, - - ``"UPS "`` for the Uni-Processor Simple Priority scheduler, - - ``"MPA "`` for the Multi-Processor Priority Affinity scheduler, and - - ``"MPD "`` for the Multi-Processor Deterministic Priority scheduler, and - - ``"MPS "`` for the Multi-Processor Simple Priority scheduler. + + - ``"MEDF"`` for the :ref:`EDF SMP Scheduler `, + - ``"MPA "`` for the :ref:`Aribitary Processor Affinity Priority SMP Scheduler `, + - ``"MPD "`` for the :ref:`Deterministic Priority SMP Scheduler `, + - ``"MPS "`` for the :ref:`Simple Priority SMP Scheduler `, + - ``"UCBS"`` for the :ref:`Uniprocessor CBS Scheduler `, + - ``"UEDF"`` for the :ref:`Uniprocessor EDF Scheduler `, + - ``"UPD "`` for the :ref:`Uniprocessor Deterministic Priority Scheduler `, and + - ``"UPS "`` for the :ref:`Uniprocessor Simple Priority Scheduler `. DESCRIPTION: Schedulers can be identified via ``rtems_scheduler_ident``. The name of diff --git a/c-user/scheduling_concepts.rst b/c-user/scheduling_concepts.rst index ff47e0a..5664d94 100644 --- a/c-user/scheduling_concepts.rst +++ b/c-user/scheduling_concepts.rst @@ -122,6 +122,8 @@ Uniprocessor Schedulers All uniprocessor schedulers included in RTEMS are priority based. The processor is allocated to the highest priority task allowed to run. +.. _SchedulerPriority: + Deterministic Priority Scheduler -------------------------------- @@ -138,6 +140,8 @@ system configured to support 256 priority levels. This scheduler is only aware of a single core. +.. _SchedulerPrioritySimple: + Simple Priority Scheduler ------------------------- @@ -156,6 +160,8 @@ This scheduler is only aware of a single core. .. index:: earliest deadline first scheduling +.. _SchedulerEDF: + Earliest Deadline First Scheduler --------------------------------- @@ -189,6 +195,8 @@ deadline. Moreover, the ``rtems_rate_monotonic_cancel`` and .. index:: constant bandwidth server scheduling +.. _SchedulerCBS: + Constant Bandwidth Server Scheduling (CBS) ------------------------------------------ @@ -224,12 +232,14 @@ All SMP schedulers included in RTEMS are priority based. The processors managed by a scheduler instance are allocated to the highest priority tasks allowed to run. +.. _SchedulerSMPEDF: + Earliest Deadline First SMP Scheduler ------------------------------------- A job-level fixed-priority scheduler using the Earliest Deadline First (EDF) method. By convention, the maximum priority level is -:math:`min(INT\_MAX, 2^{63} - 1)` for background tasks. The tasks with an +:math:`min(INT\_MAX, 2^{62} - 1)` for background tasks. The tasks with an active deadline have a higher priority than the background tasks. This scheduler supports task processor affinities of one-to-one and one-to-all, e.g. a task can execute on exactly one processor or all processors managed by the @@ -239,9 +249,11 @@ must contain all online processors to select the one-to-all affinity. This is to avoid pathological cases if processors are added/removed to/from the scheduler instance at run-time. In case the processor affinity set contains not all online processors, then a one-to-one affinity will be used selecting -the processor with the largest index within the set of processores currently +the processor with the largest index within the set of processors currently owned by the scheduler instance. +.. _SchedulerSMPPriority: + Deterministic Priority SMP Scheduler ------------------------------------ @@ -250,6 +262,8 @@ priority level for the ready tasks. The maximum priority level is configurable. By default, the maximum priority level is 255 (256 priority levels). +.. _SchedulerSMPPrioritySimple: + Simple Priority SMP Scheduler ----------------------------- @@ -257,6 +271,8 @@ A fixed-priority scheduler which uses a sorted chain for the ready tasks. By convention, the maximum priority level is 255. The implementation limit is actually :math:`2^{64} - 1`. +.. _SchedulerSMPPriorityAffinity: + Aribitary Processor Affinity Priority SMP Scheduler --------------------------------------------------- -- cgit v1.2.3