score: Add _SMP_Synchronize()

2 files changed, 18 insertions, 0 deletions

diff --git a/cpukit/include/rtems/score/smpimpl.h b/cpukit/include/rtems/score/smpimpl.h
index c0fe7a03e2..e52a82cf25 100644
--- a/cpukit/include/rtems/score/smpimpl.h
+++ b/cpukit/include/rtems/score/smpimpl.h
@@ -261,6 +261,14 @@ void _SMP_Othercast_action(
   void               *arg
 );
 
+/**
+ * @brief Ensures that all store operations issued by the current processor
+ * before the call this function are visible to all other online processors.
+ *
+ * Simply calls _SMP_Othercast_action() with an empty multicast action.
+ */
+void _SMP_Synchronize( void );
+
 #endif /* defined( RTEMS_SMP ) */
 
 /**
diff --git a/cpukit/score/src/smpmulticastaction.c b/cpukit/score/src/smpmulticastaction.c
index b5d21a4b56..232b3142fd 100644
--- a/cpukit/score/src/smpmulticastaction.c
+++ b/cpukit/score/src/smpmulticastaction.c
@@ -211,3 +211,13 @@ void _SMP_Othercast_action(
   _Processor_mask_Clear( &targets, _SMP_Get_current_processor() );
   _SMP_Multicast_action( &targets, handler, arg );
 }
+
+static void _SMP_Do_nothing_action( void *arg )
+{
+  /* Do nothing */
+}
+
+void _SMP_Synchronize( void )
+{
+  _SMP_Othercast_action( _SMP_Do_nothing_action, NULL );
+}