scheduler: Add and use _Scheduler_default_Tick()

Delete _Scheduler_priority_Tick().  Use _SMP_Get_processor_count() for
default tick operation.  Delete _Scheduler_simple_smp_Tick().

2 files changed, 17 insertions, 114 deletions

diff --git a/cpukit/score/src/schedulerprioritytick.c b/cpukit/score/src/schedulerdefaulttick.c
index 7ce3efdb3a..a9bc58a8c2 100644
--- a/cpukit/score/src/schedulerprioritytick.c
+++ b/cpukit/score/src/schedulerdefaulttick.c
@@ -1,7 +1,7 @@
 /**
  * @file
  *
- * @brief Priority Scheduler At Tick Handler
+ * @brief Default Scheduler At Tick Handler
  *
  * @ingroup ScoreScheduler
  */
@@ -20,14 +20,12 @@
 #endif
 
 #include <rtems/system.h>
-#include <rtems/score/schedulerpriority.h>
+#include <rtems/score/scheduler.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/smp.h>
 
-void _Scheduler_priority_Tick( void )
+static void _Scheduler_default_Tick_for_executing( Thread_Control *executing )
 {
-  Thread_Control *executing;
-
-  executing = _Thread_Executing;
-
   #ifdef __RTEMS_USE_TICKS_FOR_STATISTICS__
     /*
      *  Increment the number of ticks this thread has been executing
@@ -81,3 +79,15 @@ void _Scheduler_priority_Tick( void )
     #endif
   }
 }
+
+void _Scheduler_default_Tick( void )
+{
+  uint32_t processor_count = _SMP_Get_processor_count();
+  uint32_t processor;
+
+  for ( processor = 0 ; processor < processor_count ; ++processor ) {
+    _Scheduler_default_Tick_for_executing(
+      _Per_CPU_Information[ processor ].executing
+    );
+  }
+}
diff --git a/cpukit/score/src/schedulersimplesmptick.c b/cpukit/score/src/schedulersimplesmptick.c
deleted file mode 100644
index 72f8b1f761..0000000000
--- a/cpukit/score/src/schedulersimplesmptick.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/**
- *  @file
- *
- *  @brief Scheduler Simple SMP Tick Method
- *  @ingroup ScoreScheduler
- */
-
-/*
- *  COPYRIGHT (c) 1989-2009.
- *  On-Line Applications Research Corporation (OAR).
- *
- *  The license and distribution terms for this file may be
- *  found in the file LICENSE in this distribution or at
- *  http://www.rtems.com/license/LICENSE.
- */
-
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <rtems/system.h>
-#include <rtems/score/schedulersimplesmp.h>
-#include <rtems/score/smp.h>
-
-static void _Scheduler_simple_smp_Tick_helper(
-  int cpu
-)
-{
-  Thread_Control *executing;
-  ISR_Level       level;
-
-  executing = _Per_CPU_Information[cpu].executing;
-
-  #ifdef __RTEMS_USE_TICKS_FOR_STATISTICS__
-    /*
-     *  Increment the number of ticks this thread has been executing
-     */
-    executing->cpu_time_used++;
-  #endif
-
-  /*
-   *  If the thread is not preemptible or is not ready, then
-   *  just return.
-   */
-
-  if ( !executing->is_preemptible )
-    return;
-
-  if ( !_States_Is_ready( executing->current_state ) )
-    return;
-
-  /*
-   *  The cpu budget algorithm determines what happens next.
-   */
-
-  switch ( executing->budget_algorithm ) {
-    case THREAD_CPU_BUDGET_ALGORITHM_NONE:
-      break;
-
-    case THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE:
-    #if defined(RTEMS_SCORE_THREAD_ENABLE_EXHAUST_TIMESLICE)
-      case THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE:
-    #endif
-      if ( (int)(--executing->cpu_time_budget) <= 0 ) {
-
-        /*
-         *  A yield performs the ready chain mechanics needed when
-         *  resetting a timeslice.  If no other thread's are ready
-         *  at the priority of the currently executing thread, then the
-         *  executing thread's timeslice is reset.  Otherwise, the
-         *  currently executing thread is placed at the rear of the
-         *  FIFO for this priority and a new heir is selected.
-         *
-         *  In the SMP case, we do the chain manipulation for every
-         *  CPU, then schedule after all CPUs have been evaluated.
-         */
-        _ISR_Disable( level );
-          _Scheduler_simple_Ready_queue_requeue( &_Scheduler, executing );
-        _ISR_Enable( level );
-
-        executing->cpu_time_budget = _Thread_Ticks_per_timeslice;
-      }
-      break;
-
-    #if defined(RTEMS_SCORE_THREAD_ENABLE_SCHEDULER_CALLOUT)
-      case THREAD_CPU_BUDGET_ALGORITHM_CALLOUT:
-	if ( --executing->cpu_time_budget == 0 )
-	  (*executing->budget_callout)( executing );
-	break;
-    #endif
-  }
-}
-
-void _Scheduler_simple_smp_Tick( void )
-{
-  uint32_t        cpu;
-
-  /*
-   *  Iterate over all cores, updating time slicing information
-   *  and logically performing a yield.  Then perform a schedule
-   *  operation to account for all the changes.
-   */
-  for ( cpu=0 ; cpu < _SMP_Processor_count ; cpu++ ) {
-    _Scheduler_simple_smp_Tick_helper( cpu );
-  }
-  _Scheduler_simple_smp_Schedule();
-}