Changeset 8fcafdd5 in rtems for cpukit/score/Makefile.am


Ignore:
Timestamp:
May 21, 2014, 8:33:43 AM (5 years ago)
Author:
Sebastian Huber <sebastian.huber@…>
Branches:
4.11, master
Children:
5fd4e35f
Parents:
9f058fb
git-author:
Sebastian Huber <sebastian.huber@…> (05/21/14 08:33:43)
git-committer:
Sebastian Huber <sebastian.huber@…> (05/28/14 08:50:41)
Message:

score: Multiprocessor Resource Sharing Protocol

Add basic support for the Multiprocessor Resource Sharing Protocol
(MrsP).

The Multiprocessor Resource Sharing Protocol (MrsP) is defined in A.
Burns and A.J. Wellings, A Schedulability Compatible Multiprocessor
Resource Sharing Protocol - MrsP, Proceedings of the 25th Euromicro
Conference on Real-Time Systems (ECRTS 2013), July 2013. It is a
generalization of the Priority Ceiling Protocol to SMP systems. Each
MrsP semaphore uses a ceiling priority per scheduler instance. These
ceiling priorities can be specified with rtems_semaphore_set_priority().
A task obtaining or owning a MrsP semaphore will execute with the
ceiling priority for its scheduler instance as specified by the MrsP
semaphore object. Tasks waiting to get ownership of a MrsP semaphore
will not relinquish the processor voluntarily. In case the owner of a
MrsP semaphore gets preempted it can ask all tasks waiting for this
semaphore to help out and temporarily borrow the right to execute on one
of their assigned processors.

The help out feature is not implemented with this patch.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • cpukit/score/Makefile.am

    r9f058fb r8fcafdd5  
    4040include_rtems_score_HEADERS += include/rtems/score/isrlock.h
    4141include_rtems_score_HEADERS += include/rtems/score/freechain.h
     42include_rtems_score_HEADERS += include/rtems/score/mrsp.h
     43include_rtems_score_HEADERS += include/rtems/score/mrspimpl.h
    4244include_rtems_score_HEADERS += include/rtems/score/object.h
    4345include_rtems_score_HEADERS += include/rtems/score/objectimpl.h
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