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-rw-r--r--cpukit/include/rtems/score/userextimpl.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/cpukit/include/rtems/score/userextimpl.h b/cpukit/include/rtems/score/userextimpl.h
index 77486598c4..77357b9fed 100644
--- a/cpukit/include/rtems/score/userextimpl.h
+++ b/cpukit/include/rtems/score/userextimpl.h
@@ -256,9 +256,13 @@ static inline void _User_extensions_Thread_switch(
Thread_Control *heir
)
{
- const Chain_Control *chain = &_User_extensions_Switches_list;
- const Chain_Node *tail = _Chain_Immutable_tail( chain );
- const Chain_Node *node = _Chain_Immutable_first( chain );
+ const Chain_Control *chain;
+ const Chain_Node *tail;
+ const Chain_Node *node;
+
+ chain = &_User_extensions_Switches_list;
+ tail = _Chain_Immutable_tail( chain );
+ node = _Chain_Immutable_first( chain );
if ( node != tail ) {
Per_CPU_Control *cpu_self;
@@ -273,6 +277,10 @@ static inline void _User_extensions_Thread_switch(
#endif
_Per_CPU_Acquire( cpu_self );
+#if defined(RTEMS_SMP)
+ node = _Chain_Immutable_first( chain );
+#endif
+
while ( node != tail ) {
const User_extensions_Switch_control *extension =
(const User_extensions_Switch_control *) node;