summaryrefslogtreecommitdiffstats
path: root/cpukit/score/src/schedulersimpleunblock.c (follow)
Commit message (Collapse)AuthorAgeFilesLines
* score: Remove PRIORITY_PSEUDO_ISR thread prioritySebastian Huber2022-07-261-19/+1
| | | | | | | | | | | | | | | The uniprocessor schedulers had some special case logic for the PRIORITY_PSEUDO_ISR priority. Tasks with a priority of PRIORITY_PSEUDO_ISR were allowed to preempt a not preemptible task. If other higher priority task are made ready while a PRIORITY_PSEUDO_ISR task preempts a not preemptible task, then the other tasks run before the not preemptible task. This made the RTEMS_NO_PREEMPT mode ineffective. Remove the PRIORITY_PSEUDO_ISR special case logic. This simplifies the uniprocessor schedulers. Move the uniprocessor-specific scheduler support to the new header file <rtems/score/scheduleruniimpl.h>. Close #2365.
* Remove duplicate SPDX lines accidentally addedJoel Sherrill2022-04-081-2/+0
|
* score/src/[n-s]*.c: Change license to BSD-2Joel Sherrill2022-02-281-3/+24
| | | | Updates #3053.
* score/src/schedulersimple*.c: Replace found in found in with found inJoel Sherrill2022-02-231-1/+1
| | | | Updates #3053.
* score: Canonicalize Doxygen @file commentsSebastian Huber2020-12-021-3/+4
| | | | | | Use common phrases for the file brief descriptions. Update #3706.
* doxygen: Switch @brief and @ingroupSebastian Huber2020-04-281-1/+2
| | | | This order change fixes the Latex documentation build via Doxygen.
* Canonicalize config.h includeSebastian Huber2020-04-161-1/+1
| | | | | | | | Use the following variant which was already used by most source files: #ifdef HAVE_CONFIG_H #include "config.h" #endif
* doxygen: Rename Score* groups in RTEMSScore*Sebastian Huber2019-04-041-1/+1
| | | | Update #3706
* Remove explicit file names from @fileSebastian Huber2019-02-281-1/+1
| | | | | | This makes the @file documentation independent of the actual file name. Update #3707.
* score: Optimize scheduler priority updatesSebastian Huber2017-11-201-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thread priority changes may append or prepend the thread to its priority group on the scheduler ready queue. Previously, a separate priority value and a prepend-it flag in the scheduler node were used to propagate a priority change to the scheduler. Now, use an append-it bit in the priority control and reduce the plain priority value to 63 bits. This change leads to a significant code size reduction (about 25%) of the SMP schedulers. The negligible increase of the standard priority scheduler is due to some additional shift operations (SCHEDULER_PRIORITY_MAP() and SCHEDULER_PRIORITY_UNMAP()). Before: text filename 136 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleblock.o 464 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimplechangepriority.o 24 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimple.o 108 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleschedule.o 292 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleunblock.o 264 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleyield.o text filename 280 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityblock.o 488 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerprioritychangepriority.o 200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriority.o 164 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityschedule.o 328 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityunblock.o 200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityyield.o text filename 24112 arm-rtems5/c/imx7/cpukit/score/src/libscore_a-scheduleredfsmp.o text filename 37204 sparc-rtems5/c/gr740/cpukit/score/src/libscore_a-scheduleredfsmp.o text filename 42236 powerpc-rtems5/c/qoriq_e6500_32/cpukit/score/src/libscore_a-scheduleredfsmp.o After: text filename 136 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleblock.o 272 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimplechangepriority.o 24 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimple.o 108 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleschedule.o 292 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleunblock.o 264 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleyield.o text filename 280 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityblock.o 488 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerprioritychangepriority.o 208 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriority.o 164 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityschedule.o 332 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityunblock.o 200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityyield.o text filename 18860 arm-rtems5/c/imx7/cpukit/score/src/libscore_a-scheduleredfsmp.o text filename 28520 sparc-rtems5/c/gr740/cpukit/score/src/libscore_a-scheduleredfsmp.o text filename 32664 powerpc-rtems5/c/qoriq_e6500_32/cpukit/score/src/libscore_a-scheduleredfsmp.o
* score: Improve scheduler helping protocolSebastian Huber2017-02-031-3/+1
| | | | | | | | | | | Only register ask for help requests in the scheduler unblock and yield operations. The actual ask for help operation is carried out during _Thread_Do_dispatch() on a processor related to the thread. This yields a better separation of scheduler instances. A thread of one scheduler instance should not be forced to carry out too much work for threads on other scheduler instances. Update #2556.
* score: Simplify yield and unblock scheduler opsSebastian Huber2016-11-021-2/+2
| | | | Update #2556.
* score: Pass scheduler node to unblock operationSebastian Huber2016-11-021-1/+4
| | | | | | Changed for consistency with other scheduler operations. Update #2556.
* score: Introduce _Thread_Get_priority()Sebastian Huber2016-09-081-4/+6
| | | | Avoid direct access to thread internal data fields.
* score: Update _Thread_Heir only if necessarySebastian Huber2015-03-051-4/+4
| | | | | | | | | | | | | | | | | | | | Previously, the _Thread_Heir was updated unconditionally in case a new heir was determined. The _Thread_Dispatch_necessary was only updated in case the executing thread was preemptible or an internal thread was unblocked. Change this to update the _Thread_Heir and _Thread_Dispatch_necessary only in case the currently selected heir thread is preemptible or a dispatch is forced. Move the schedule decision into the change priority operation and use the schedule operation only in rtems_task_mode() in case preemption is enabled or an ASR dispatch is necessary. This is a behaviour change. Previously, the RTEMS_NO_PREEMPT also prevented signal delivery in certain cases (not always). Now, signal delivery is no longer influenced by RTEMS_NO_PREEMPT. Since the currently selected heir thread is used to determine if a new heir is chosen, non-preemptible heir threads currently not executing now prevent a new heir. This may have an application impact, see change test tm04. Document this change in sp04. Update #2273.
* score: Need for help indicator for scheduler opsSebastian Huber2014-07-081-1/+3
| | | | | | | | | | | | | Return a thread in need for help for the following scheduler operations - unblock, - change priority, and - yield. A thread in need for help is a thread that encounters a scheduler state change from scheduled to ready or a thread that cannot be scheduled in an unblock operation. Such a thread can ask threads which depend on resources owned by this thread for help.
* score: Simplify _Thread_Change_priority()Sebastian Huber2014-05-151-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | The function to change a thread priority was too complex. Simplify it with a new scheduler operation. This increases the average case performance due to the simplified logic. The interrupt disabled critical section is a bit prolonged since now the extract, update and enqueue steps are executed atomically. This should however not impact the worst-case interrupt latency since at least for the Deterministic Priority Scheduler this sequence can be carried out with a wee bit of instructions and no loops. Add _Scheduler_Change_priority() to replace the sequence of - _Thread_Set_transient(), - _Scheduler_Extract(), - _Scheduler_Enqueue(), and - _Scheduler_Enqueue_first(). Delete STATES_TRANSIENT, _States_Is_transient() and _Thread_Set_transient() since this state is now superfluous. With this change it is possible to get rid of the SCHEDULER_SMP_NODE_IN_THE_AIR state. This considerably simplifies the implementation of the new SMP locking protocols.
* score: Static scheduler configurationSebastian Huber2014-04-151-5/+3
| | | | | | 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/+2
| | | | | 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
|
* score misc: Score misc: Clean up Doxygen #11 (GCI 2012)Daniel Georgiev2012-12-011-2/+7
| | | | | | | This patch is a task from GCI 2012 which improves the Doxygen comments in the RTEMS source. http://www.google-melange.com/gci/task/view/google/gci2012/8013204
* 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.
* 2011-05-12 Joel Sherrill <joel.sherrilL@OARcorp.com>Joel Sherrill2011-05-121-1/+1
| | | | | | | | | | | * score/include/rtems/score/schedulersimple.h, score/inline/rtems/score/schedulersimple.inl, score/src/schedulersimpleenqueue.c, score/src/schedulersimpleenqueuefirst.c, score/src/schedulersimplereadyqueueenqueue.c, score/src/schedulersimplereadyqueueenqueuefirst.c, score/src/schedulersimpleunblock.c: Correct names as pointed out by Gedare.
* 2011-03-16 Jennifer Averett <jennifer.averett@OARcorp.com>Joel Sherrill2011-03-161-0/+47
PR 1743/cpu * sapi/include/confdefs.h, score/Makefile.am, score/preinstall.am: Add Simple Priority Scheduler as complement to existing Deterministic Priority Scheduler. This scheduler serves both as an example and as a lighter weight implementation for smaller systems. * score/include/rtems/score/schedulersimple.h, score/inline/rtems/score/schedulersimple.inl, score/src/schedulersimple.c, score/src/schedulersimpleblock.c, score/src/schedulersimpleenqueue.c, score/src/schedulersimpleenqueuefirst.c, score/src/schedulersimpleextract.c, score/src/schedulersimplereadyqueueenqueue.c, score/src/schedulersimplereadyqueueenqueuefirst.c, score/src/schedulersimpleschedule.c, score/src/schedulersimpleunblock.c, score/src/schedulersimpleyield.c: New files.
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 07:05:34 +0000