score: Rework thread priority management

Add priority nodes which contribute to the overall thread priority.

The actual priority of a thread is now an aggregation of priority nodes.
The thread priority aggregation for the home scheduler instance of a
thread consists of at least one priority node, which is normally the
real priority of the thread.  The locking protocols (e.g. priority
ceiling and priority inheritance), rate-monotonic period objects and the
POSIX sporadic server add, change and remove priority nodes.

A thread changes its priority now immediately, e.g. priority changes are
not deferred until the thread releases its last resource.

Replace the _Thread_Change_priority() function with

 * _Thread_Priority_perform_actions(),
 * _Thread_Priority_add(),
 * _Thread_Priority_remove(),
 * _Thread_Priority_change(), and
 * _Thread_Priority_update().

Update #2412.
Update #2556.

1 files changed, 6 insertions, 5 deletions

diff --git a/cpukit/score/include/rtems/score/schedulersmpimpl.h b/cpukit/score/include/rtems/score/schedulersmpimpl.h
index ae1941aa43..035df46d65 100644
--- a/cpukit/score/include/rtems/score/schedulersmpimpl.h
+++ b/cpukit/score/include/rtems/score/schedulersmpimpl.h
@@ -375,7 +375,7 @@ static inline Scheduler_SMP_Node *_Scheduler_SMP_Thread_get_own_node(
   Thread_Control *thread
 )
 {
-  return (Scheduler_SMP_Node *) _Scheduler_Thread_get_own_node( thread );
+  return (Scheduler_SMP_Node *) _Thread_Scheduler_get_own_node( thread );
 }
 
 static inline Scheduler_SMP_Node *_Scheduler_SMP_Node_downcast(
@@ -386,12 +386,13 @@ static inline Scheduler_SMP_Node *_Scheduler_SMP_Node_downcast(
 }
 
 static inline void _Scheduler_SMP_Node_initialize(
-  Scheduler_SMP_Node *node,
-  Thread_Control     *thread,
-  Priority_Control    priority
+  const Scheduler_Control *scheduler,
+  Scheduler_SMP_Node      *node,
+  Thread_Control          *thread,
+  Priority_Control         priority
 )
 {
-  _Scheduler_Node_do_initialize( &node->Base, thread, priority );
+  _Scheduler_Node_do_initialize( scheduler, &node->Base, thread, priority );
   node->state = SCHEDULER_SMP_NODE_BLOCKED;
   node->priority = priority;
 }