Optional Initial Extensions initialization

Update #2408.

5 files changed, 20 insertions, 18 deletions

diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index 8635ca02d4..8f5906d067 100644
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -26,8 +26,10 @@
  * Include the executive's configuration
  */
 #include <rtems.h>
+#include <rtems/sysinit.h>
 #include <rtems/score/apimutex.h>
 #include <rtems/score/percpu.h>
+#include <rtems/score/userextimpl.h>
 #include <rtems/score/wkspace.h>
 
 #ifdef CONFIGURE_DISABLE_BSP_SETTINGS
@@ -2394,6 +2396,12 @@ const rtems_libio_helper rtems_fs_init_helper =
   #define CONFIGURE_INITIAL_EXTENSION_TABLE Configuration_Initial_Extensions
   #define CONFIGURE_NUMBER_OF_INITIAL_EXTENSIONS \
     RTEMS_ARRAY_SIZE(Configuration_Initial_Extensions)
+
+  RTEMS_SYSINIT_ITEM(
+    _User_extensions_Handler_initialization,
+    RTEMS_SYSINIT_INITIAL_EXTENSIONS,
+    RTEMS_SYSINIT_ORDER_MIDDLE
+  );
 #else
   #define CONFIGURE_INITIAL_EXTENSION_TABLE NULL
   #define CONFIGURE_NUMBER_OF_INITIAL_EXTENSIONS 0
diff --git a/cpukit/sapi/src/exinit.c b/cpukit/sapi/src/exinit.c
index faaf283a30..685197df90 100644
--- a/cpukit/sapi/src/exinit.c
+++ b/cpukit/sapi/src/exinit.c
@@ -47,7 +47,6 @@
 #include <rtems/score/timecounter.h>
 #include <rtems/score/threadimpl.h>
 #include <rtems/score/todimpl.h>
-#include <rtems/score/userextimpl.h>
 #include <rtems/score/watchdogimpl.h>
 #include <rtems/score/wkspace.h>
 
@@ -113,7 +112,6 @@ static void rtems_initialize_data_structures(void)
 
   _Thread_Dispatch_initialization();
 
-  _User_extensions_Handler_initialization();
   _ISR_Handler_initialization();
 
   _API_Mutex_Initialization( 2 );
diff --git a/cpukit/score/include/rtems/sysinit.h b/cpukit/score/include/rtems/sysinit.h
index e6fe62f230..49c465bfbc 100644
--- a/cpukit/score/include/rtems/sysinit.h
+++ b/cpukit/score/include/rtems/sysinit.h
@@ -28,7 +28,8 @@ extern "C" {
  */
 #define RTEMS_SYSINIT_BSP_WORK_AREAS             000100
 #define RTEMS_SYSINIT_BSP_START                  000200
-#define RTEMS_SYSINIT_DATA_STRUCTURES            000300
+#define RTEMS_SYSINIT_INITIAL_EXTENSIONS         000300
+#define RTEMS_SYSINIT_DATA_STRUCTURES            000301
 #define RTEMS_SYSINIT_IDLE_THREADS               000380
 #define RTEMS_SYSINIT_BSP_LIBC                   000400
 #define RTEMS_SYSINIT_BEFORE_DRIVERS             000500
diff --git a/cpukit/score/src/threaddispatch.c b/cpukit/score/src/threaddispatch.c
index 3ae8335fef..00c2f095a2 100644
--- a/cpukit/score/src/threaddispatch.c
+++ b/cpukit/score/src/threaddispatch.c
@@ -30,6 +30,8 @@
 #include <rtems/score/wkspace.h>
 #include <rtems/config.h>
 
+CHAIN_DEFINE_EMPTY( _User_extensions_Switches_list );
+
 static Thread_Action *_Thread_Get_post_switch_action(
   Thread_Control *executing
 )
diff --git a/cpukit/score/src/userext.c b/cpukit/score/src/userext.c
index 1328f68b42..1ac622e093 100644
--- a/cpukit/score/src/userext.c
+++ b/cpukit/score/src/userext.c
@@ -23,8 +23,6 @@
 #include <rtems/score/userextimpl.h>
 #include <rtems/score/wkspace.h>
 
-CHAIN_DEFINE_EMPTY( _User_extensions_Switches_list );
-
 typedef struct {
   User_extensions_Switch_control *switch_control;
 } User_extensions_Switch_context;
@@ -50,17 +48,12 @@ static void _User_extensions_Switch_visitor(
 
 void _User_extensions_Handler_initialization(void)
 {
-  uint32_t number_of_initial_extensions =
-    rtems_configuration_get_number_of_initial_extensions();
-
-  if ( number_of_initial_extensions > 0 ) {
-    User_extensions_Switch_control *initial_extension_switch_controls =
-      _Workspace_Allocate_or_fatal_error(
-        number_of_initial_extensions
-          * sizeof( *initial_extension_switch_controls )
-      );
-    User_extensions_Switch_context ctx = { initial_extension_switch_controls };
-
-    _User_extensions_Iterate( &ctx, _User_extensions_Switch_visitor );
-  }
+  User_extensions_Switch_control *initial_extension_switch_controls =
+    _Workspace_Allocate_or_fatal_error(
+      rtems_configuration_get_number_of_initial_extensions()
+        * sizeof( *initial_extension_switch_controls )
+    );
+  User_extensions_Switch_context ctx = { initial_extension_switch_controls };
+
+  _User_extensions_Iterate( &ctx, _User_extensions_Switch_visitor );
 }