[rtems commit] score: Add comment
Sebastian Huber
sebh at rtems.org
Fri Jul 24 07:14:07 UTC 2015
Module: rtems
Branch: master
Commit: 9c539101909b46a801e5a319204600fedc1954dc
Changeset: http://git.rtems.org/rtems/commit/?id=9c539101909b46a801e5a319204600fedc1954dc
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Fri Jul 24 09:12:54 2015 +0200
score: Add comment
---
cpukit/score/include/rtems/score/threadimpl.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/cpukit/score/include/rtems/score/threadimpl.h b/cpukit/score/include/rtems/score/threadimpl.h
index 7b8f89c..52a040c 100644
--- a/cpukit/score/include/rtems/score/threadimpl.h
+++ b/cpukit/score/include/rtems/score/threadimpl.h
@@ -1224,6 +1224,11 @@ RTEMS_INLINE_ROUTINE void _Thread_Lock_restore_default(
Thread_Control *the_thread
)
{
+ /*
+ * Ensures that the stores to the wait queue and operations completed before
+ * the default lock is restored. See _Thread_Wait_set_queue() and
+ * _Thread_Wait_restore_default_operations().
+ */
_Atomic_Fence( ATOMIC_ORDER_RELEASE );
_Thread_Lock_set_unprotected( the_thread, &the_thread->Lock.Default );
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