score: Rework affine ready queue handling

Rework the handling of the affine ready queue for the EDF SMP scheduler.
Do the queue handling in the node insert, move, and extract operations.
Remove the queue handling from _Scheduler_EDF_SMP_Allocate_processor().

Update #4531.

1 files changed, 11 insertions, 2 deletions

diff --git a/cpukit/include/rtems/score/scheduleredfsmp.h b/cpukit/include/rtems/score/scheduleredfsmp.h
index 85e438e81d..ec975ed12f 100644
--- a/cpukit/include/rtems/score/scheduleredfsmp.h
+++ b/cpukit/include/rtems/score/scheduleredfsmp.h
@@ -79,9 +79,18 @@ typedef struct {
   RBTree_Control Queue;
 
   /**
-   * @brief The scheduled thread of the corresponding processor.
+   * @brief If this member is not NULL, then it references the scheduled thread
+   *   affine only to the corresponding processor, otherwise the processor is
+   *   allocated to a thread which may execute on any of the processors owned
+   *   by the scheduler.
    */
-  Scheduler_EDF_SMP_Node *scheduled;
+  Scheduler_EDF_SMP_Node *affine_scheduled;
+
+  /**
+   * @brief This member references the thread allocated to the corresponding
+   *   processor.
+   */
+  Scheduler_EDF_SMP_Node *allocated;
 } Scheduler_EDF_SMP_Ready_queue;
 
 typedef struct {