score: Need for help indicator for scheduler ops

Return a thread in need for help for the following scheduler operations

- unblock,
- change priority, and
- yield.

A thread in need for help is a thread that encounters a scheduler state
change from scheduled to ready or a thread that cannot be scheduled in
an unblock operation.  Such a thread can ask threads which depend on
resources owned by this thread for help.

1 files changed, 3 insertions, 3 deletions

diff --git a/cpukit/score/include/rtems/score/schedulersimple.h b/cpukit/score/include/rtems/score/schedulersimple.h
index ef60613d1b..c97ad2f3c6 100644
--- a/cpukit/score/include/rtems/score/schedulersimple.h
+++ b/cpukit/score/include/rtems/score/schedulersimple.h
@@ -101,7 +101,7 @@ void _Scheduler_simple_Schedule(
  *
  *  @param[in,out] thread The yielding thread.
  */
-void _Scheduler_simple_Yield(
+Scheduler_Void_or_thread _Scheduler_simple_Yield(
   const Scheduler_Control *scheduler,
   Thread_Control          *the_thread
 );
@@ -130,12 +130,12 @@ void _Scheduler_simple_Block(
  *
  *  @param[in] the_thread is the thread that is to be unblocked
  */
-void _Scheduler_simple_Unblock(
+Scheduler_Void_or_thread _Scheduler_simple_Unblock(
   const Scheduler_Control *scheduler,
   Thread_Control          *the_thread
 );
 
-void _Scheduler_simple_Change_priority(
+Scheduler_Void_or_thread _Scheduler_simple_Change_priority(
   const Scheduler_Control *scheduler,
   Thread_Control          *the_thread,
   Priority_Control         new_priority,