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, 17 insertions, 2 deletions

diff --git a/cpukit/score/include/rtems/score/schedulerpriority.h b/cpukit/score/include/rtems/score/schedulerpriority.h
index 4393b7ddb5..134dcd715b 100644
--- a/cpukit/score/include/rtems/score/schedulerpriority.h
+++ b/cpukit/score/include/rtems/score/schedulerpriority.h
@@ -83,7 +83,7 @@ typedef struct {
 } Scheduler_priority_Context;
 
 /**
- * Per-thread data related to the _Scheduler_PRIORITY scheduling policy.
+ * @brief Data for ready queue operations.
  */
 typedef struct {
   /** This field points to the Ready FIFO for this thread's priority. */
@@ -91,7 +91,22 @@ typedef struct {
 
   /** This field contains precalculated priority map indices. */
   Priority_bit_map_Information          Priority_map;
-} Scheduler_priority_Per_thread;
+} Scheduler_priority_Ready_queue;
+
+/**
+ * @brief Scheduler node specialization for Deterministic Priority schedulers.
+ */
+typedef struct {
+  /**
+   * @brief Basic scheduler node.
+   */
+  Scheduler_Node Base;
+
+  /**
+   * @brief The associated ready queue of this node.
+   */
+  Scheduler_priority_Ready_queue Ready_queue;
+} Scheduler_priority_Node;
 
 /**
  * @brief Initializes the priority scheduler.