svn commit: r270942 - head/sys/sys
Ed Schouten
ed at FreeBSD.org
Mon Sep 1 18:28:12 UTC 2014
Author: ed
Date: Mon Sep 1 18:28:11 2014
New Revision: 270942
URL: http://svnweb.freebsd.org/changeset/base/270942
Log:
Enable lock annotations on HEAD when using Clang.
MFC after: never
Modified:
head/sys/sys/cdefs.h
Modified: head/sys/sys/cdefs.h
==============================================================================
--- head/sys/sys/cdefs.h Mon Sep 1 18:27:04 2014 (r270941)
+++ head/sys/sys/cdefs.h Mon Sep 1 18:28:11 2014 (r270942)
@@ -749,12 +749,13 @@
* Furthermore, it is also possible to annotate variables and structure
* members to enforce that they are only accessed when certain locks are
* held.
- *
- * Note: These annotations have no effect on this version of FreeBSD.
- * They are merely provided for forward compatibilty.
*/
+#ifdef __clang__
+#define __lock_annotate(x) __attribute__((x))
+#else
#define __lock_annotate(x)
+#endif
/* Structure implements a lock. */
#define __lockable __lock_annotate(lockable)
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