scheduler: Specify thread of yield operation

The yielding thread of the yield operation is now specified by a
parameter.  The tick operation may be performed for each executing
thread in a SMP configuration.

1 files changed, 5 insertions, 3 deletions

diff --git a/cpukit/score/include/rtems/score/schedulerpriority.h b/cpukit/score/include/rtems/score/schedulerpriority.h
index 81c3582e76..f0582c1315 100644
--- a/cpukit/score/include/rtems/score/schedulerpriority.h
+++ b/cpukit/score/include/rtems/score/schedulerpriority.h
@@ -145,12 +145,12 @@ void _Scheduler_priority_Unblock(
 );
 
 /**
- *  @brief Remove the running THREAD to the rear of this chain.
+ *  @brief The specified THREAD yields.
  *
  *  This routine is invoked when a thread wishes to voluntarily
  *  transfer control of the processor to another thread in the queue.
  *
- *  This routine will remove the running THREAD from the ready queue
+ *  This routine will remove the specified THREAD from the ready queue
  *  and place it immediately at the rear of this chain.  Reset timeslice
  *  and yield the processor functions both use this routine, therefore if
  *  reset is true and this is the only thread on the queue then the
@@ -160,8 +160,10 @@ void _Scheduler_priority_Unblock(
  *  - INTERRUPT LATENCY:
  *    + ready chain
  *    + select heir
+ *
+ *  @param[in/out] thread The yielding thread.
  */
-void _Scheduler_priority_Yield( void );
+void _Scheduler_priority_Yield( Thread_Control *thread );
 
 /**
  *  @brief Puts @a the_thread on to the priority-based ready queue.