X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Falign.h;h=81b92f86193d0501286212b3cd9211b13c14bc7b;hp=ed353206d1ad03e3d1286414f604041f80538037;hb=3a4595c2469472dee1656cde5f8882c2123efd3c;hpb=d575a7f8b451189ba011444a886aa1147f419f4d

diff --git a/src/common/align.h b/src/common/align.h
index ed353206d..81b92f861 100644
--- a/src/common/align.h
+++ b/src/common/align.h
@@ -1,22 +1,13 @@
-#ifndef _LTTNG_ALIGN_H
-#define _LTTNG_ALIGN_H
-
 /*
- * align.h
+ * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * (C) Copyright 2010-2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: MIT
  *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
  */
 
+#ifndef _LTTNG_ALIGN_H
+#define _LTTNG_ALIGN_H
+
 #include "bug.h"
 #include <unistd.h>
 #include <limits.h>
@@ -35,6 +26,12 @@
 #define ALIGN(v, align)		__ALIGN_MASK(v, (__typeof__(v)) (align) - 1)
 #endif
 
+#define __ALIGN_FLOOR_MASK(v, mask)	((v) & ~(mask))
+
+#ifndef ALIGN_FLOOR
+#define ALIGN_FLOOR(v, align)	__ALIGN_FLOOR_MASK(v, (__typeof__(v)) (align) - 1)
+#endif
+
 #define PAGE_ALIGN(addr)	ALIGN(addr, PAGE_SIZE)
 
 /**