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-rw-r--r--cpukit/score/include/rtems/score/scheduler.h19
1 files changed, 18 insertions, 1 deletions
diff --git a/cpukit/score/include/rtems/score/scheduler.h b/cpukit/score/include/rtems/score/scheduler.h
index 5be2c98dc3..831accb7ae 100644
--- a/cpukit/score/include/rtems/score/scheduler.h
+++ b/cpukit/score/include/rtems/score/scheduler.h
@@ -165,7 +165,24 @@ struct Scheduler_Control {
* @brief Scheduler node for per-thread data.
*/
struct Scheduler_Node {
- /* No fields yet */
+#if defined(RTEMS_SMP)
+ /**
+ * @brief Chain node for usage in various scheduler data structures.
+ *
+ * Strictly this is the wrong place for this field since the data structures
+ * to manage scheduler nodes belong to the particular scheduler
+ * implementation. Currently all SMP scheduler implementations use chains.
+ * The node is here to simplify things, just like the object node in the
+ * thread control block. It may be replaced with a union to add a red-black
+ * tree node in the future.
+ */
+ Chain_Node Node;
+
+ /**
+ * @brief The thread owning this node.
+ */
+ Thread_Control *owner;
+#endif
};
/**