From 9bfad8cd519f17cbb26a672868169fcd304d5bd5 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 8 Jun 2016 22:22:46 +0200 Subject: score: Add thread priority to scheduler nodes 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 A generation counter ensures that the scheduler discards out-of-date priorities.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. --- cpukit/score/Makefile.am | 3 --- 1 file changed, 3 deletions(-) (limited to 'cpukit/score/Makefile.am') diff --git a/cpukit/score/Makefile.am b/cpukit/score/Makefile.am index a58aedcc09..f2ebac2d1d 100644 --- a/cpukit/score/Makefile.am +++ b/cpukit/score/Makefile.am @@ -234,7 +234,6 @@ libscore_a_SOURCES += src/schedulerdefaultreleasejob.c libscore_a_SOURCES += src/schedulerdefaultschedule.c libscore_a_SOURCES += src/schedulerdefaultstartidle.c libscore_a_SOURCES += src/schedulerdefaulttick.c -libscore_a_SOURCES += src/schedulerdefaultupdate.c ## SCHEDULERPRIORITY_C_FILES libscore_a_SOURCES += src/schedulerpriority.c \ @@ -242,7 +241,6 @@ libscore_a_SOURCES += src/schedulerpriority.c \ src/schedulerprioritychangepriority.c \ src/schedulerpriorityschedule.c \ src/schedulerpriorityunblock.c \ - src/schedulerpriorityupdate.c \ src/schedulerpriorityyield.c ## SCHEDULERSIMPLE_C_FILES @@ -261,7 +259,6 @@ libscore_a_SOURCES += src/scheduleredf.c \ src/scheduleredfreleasejob.c \ src/scheduleredfschedule.c \ src/scheduleredfunblock.c \ - src/scheduleredfupdate.c \ src/scheduleredfyield.c ## SCHEDULERCBS_C_FILES -- cgit v1.2.3