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* score: Add thread priority to scheduler nodesSebastian Huber2016-06-221-38/+0
| | | | | | | | | | | | | | | | | | The thread priority is manifest in two independent areas. One area is the user visible thread priority along with a potential thread queue. The other is the scheduler. Currently, a thread priority update via _Thread_Change_priority() first updates the user visble thread priority and the thread queue, then the scheduler is notified if necessary. The priority is passed to the scheduler via a local variable. A generation counter ensures that the scheduler discards out-of-date priorities. This use of a local variable ties the update in these two areas close together. For later enhancements and the OMIP locking protocol implementation we need more flexibility. Add a thread priority information block to Scheduler_Node and synchronize priority value updates via a sequence lock on SMP configurations. Update #2556.
* score: Rework EDF schedulerSebastian Huber2016-06-221-9/+6
| | | | | | | | | Use inline red-black tree insert. Do not use shifting priorities since this is not supported by the thread queues. Due to the 32-bit Priority_Control this currently limits the uptime to 49days with a 1ms clock tick. Update #2173.
* score: Rename *_Node_get() to *_Thread_get_node()Sebastian Huber2014-07-081-1/+1
| | | | | | This emphasizes that the scheduler node of a thread is returned and this is not a function working with scheduler nodes like the other *_Node_*() functions.
* score: Rename _Scheduler_Update()Sebastian Huber2014-06-041-2/+4
| | | | | | Rename _Scheduler_Update() to _Scheduler_Update_priority(). Add parameter for the new thread priority to avoid direct usage of Thread_Control::current_priority in the scheduler operation.
* score: Introduce scheduler nodesSebastian Huber2014-05-141-10/+4
| | | | | | | | | | | | Rename scheduler per-thread information into scheduler nodes using Scheduler_Node as the base type. Use inheritance for specialized schedulers. Move the scheduler specific states from the thread control block into the scheduler node structure. Validate the SMP scheduler node state transitions in case RTEMS_DEBUG is defined.
* score: Static scheduler configurationSebastian Huber2014-04-151-2/+2
| | | | | | Do not allocate the scheduler control structures from the workspace. This is a preparation step for configuration of clustered/partitioned schedulers on SMP.
* score: Add scheduler control to scheduler opsSebastian Huber2014-04-041-1/+4
| | | | | Scheduler operations must be free of a global scheduler context to enable partitioned/clustered scheduling.
* Change all references of rtems.com to rtems.org.Chris Johns2014-03-211-1/+1
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* score misc: Score misc: Clean up Doxygen #9 (GCI 2012)Alex Ivanov2012-11-301-0/+7
| | | | | | | This patch is a task from GCI 2012 which improves the Doxygen comments in the RTEMS source. https://google-melange.appspot.com/gci/task/view/google/gci2012/7977211
* Remove All CVS Id Strings Possible Using a ScriptJoel Sherrill2012-05-111-2/+0
| | | | | | | | | | | | Script does what is expected and tries to do it as smartly as possible. + remove occurrences of two blank comment lines next to each other after Id string line removed. + remove entire comment blocks which only exited to contain CVS Ids + If the processing left a blank line at the top of a file, it was removed.
* 2011-10-03 Ralf Corsépius <ralf.corsepius@rtems.org>Ralf Corsepius2011-10-031-1/+0
| | | | * score/src/scheduleredfupdate.c: Remove unused var "the_node".
* 2011-09-20 Petr Benes <benesp16@fel.cvut.cz>Joel Sherrill2011-09-201-12/+0
| | | | | | | PR 1916/testing * rtems/src/ratemondelete.c, score/src/schedulercbsreleasejob.c, score/src/scheduleredfupdate.c, score/src/scheduleredfyield.c: Rework to improve coverage.
* 2011-09-11 Petr Benes <benesp16@fel.cvut.cz>Joel Sherrill2011-09-111-0/+50
PR 1896/cpukit * sapi/include/confdefs.h, score/Makefile.am, score/preinstall.am: Add Earliest Deadline First (EDF) Scheduling Algorithm implementation. * score/include/rtems/score/scheduleredf.h, score/src/scheduleredf.c, score/src/scheduleredfallocate.c, score/src/scheduleredfblock.c, score/src/scheduleredfenqueue.c, score/src/scheduleredfenqueuefirst.c, score/src/scheduleredfextract.c, score/src/scheduleredffree.c, score/src/scheduleredfprioritycompare.c, score/src/scheduleredfreleasejob.c, score/src/scheduleredfschedule.c, score/src/scheduleredfunblock.c, score/src/scheduleredfupdate.c, score/src/scheduleredfyield.c: New files.
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