score: Introduce scheduler nodes

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.

1 files changed, 27 insertions, 2 deletions

diff --git a/cpukit/score/include/rtems/score/schedulerprioritysmp.h b/cpukit/score/include/rtems/score/schedulerprioritysmp.h
index 66de9645bd..3e7d22f81d 100644
--- a/cpukit/score/include/rtems/score/schedulerprioritysmp.h
+++ b/cpukit/score/include/rtems/score/schedulerprioritysmp.h
@@ -47,13 +47,33 @@ extern "C" {
  * @{
  */
 
+/**
+ * @brief Scheduler context specialization for Deterministic Priority SMP
+ * schedulers.
+ */
 typedef struct {
   Scheduler_SMP_Context    Base;
   Priority_bit_map_Control Bit_map;
-  Chain_Control            Ready[ 0 ];
+  Chain_Control            Ready[ RTEMS_ZERO_LENGTH_ARRAY ];
 } Scheduler_priority_SMP_Context;
 
 /**
+ * @brief Scheduler node specialization for Deterministic Priority SMP
+ * schedulers.
+ */
+typedef struct {
+  /**
+   * @brief SMP scheduler node.
+   */
+  Scheduler_SMP_Node Base;
+
+  /**
+   * @brief The associated ready queue of this node.
+   */
+  Scheduler_priority_Ready_queue Ready_queue;
+} Scheduler_priority_SMP_Node;
+
+/**
  * @brief Entry points for the Priority SMP Scheduler.
  */
 #define SCHEDULER_PRIORITY_SMP_ENTRY_POINTS \
@@ -63,7 +83,7 @@ typedef struct {
     _Scheduler_priority_SMP_Yield, \
     _Scheduler_priority_SMP_Block, \
     _Scheduler_priority_SMP_Enqueue_fifo, \
-    _Scheduler_default_Allocate, \
+    _Scheduler_priority_SMP_Allocate, \
     _Scheduler_default_Free, \
     _Scheduler_priority_SMP_Update, \
     _Scheduler_priority_SMP_Enqueue_fifo, \
@@ -79,6 +99,11 @@ typedef struct {
 
 void _Scheduler_priority_SMP_Initialize( const Scheduler_Control *scheduler );
 
+bool _Scheduler_priority_SMP_Allocate(
+  const Scheduler_Control *scheduler,
+  Thread_Control *thread
+);
+
 void _Scheduler_priority_SMP_Schedule(
   const Scheduler_Control *scheduler,
   Thread_Control *thread