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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-06-08 22:22:46 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-06-22 14:44:56 +0200 |
| commit | 9bfad8cd519f17cbb26a672868169fcd304d5bd5 (patch) | |
| tree | 3a07add3fb0cdf47fe4d5c9432ad931429c05d65 /cpukit/score/include/rtems/score/schedulercbs.h | |
| parent | score: Move _RBTree_Find() (diff) | |
| download | rtems-9bfad8cd519f17cbb26a672868169fcd304d5bd5.tar.bz2 | |
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counter ensures that the scheduler discards out-of-date priorities.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.
Diffstat (limited to 'cpukit/score/include/rtems/score/schedulercbs.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/schedulercbs.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/cpukit/score/include/rtems/score/schedulercbs.h b/cpukit/score/include/rtems/score/schedulercbs.h index fea10d54ce..91e69d09da 100644 --- a/cpukit/score/include/rtems/score/schedulercbs.h +++ b/cpukit/score/include/rtems/score/schedulercbs.h @@ -54,13 +54,12 @@ extern "C" { _Scheduler_EDF_Yield, /* yield entry point */ \ _Scheduler_EDF_Block, /* block entry point */ \ _Scheduler_CBS_Unblock, /* unblock entry point */ \ - _Scheduler_EDF_Change_priority, /* change priority entry point */ \ + _Scheduler_EDF_Update_priority, /* update priority entry point */ \ _Scheduler_EDF_Map_priority, /* map priority entry point */ \ _Scheduler_EDF_Unmap_priority, /* unmap priority entry point */ \ SCHEDULER_OPERATION_DEFAULT_ASK_FOR_HELP \ _Scheduler_CBS_Node_initialize, /* node initialize entry point */ \ _Scheduler_default_Node_destroy, /* node destroy entry point */ \ - _Scheduler_EDF_Update_priority, /* update priority entry point */ \ _Scheduler_CBS_Release_job, /* new period of task */ \ _Scheduler_default_Tick, /* tick entry point */ \ _Scheduler_default_Start_idle /* start idle entry point */ \ @@ -346,7 +345,8 @@ void _Scheduler_CBS_Budget_callout( */ void _Scheduler_CBS_Node_initialize( const Scheduler_Control *scheduler, - Thread_Control *the_thread + Thread_Control *the_thread, + Priority_Control priority ); #ifdef __cplusplus |