---

yaml --- r: 179351 b: refs/heads/master c: cc8ef6e h: refs/heads/master i: 179349: 5583ad7 179347: a4f3e9b 179343: 88b1043 v: v3
git-mirror · Jan 16, 2010 · 31036dd · 31036dd
1 parent d6e641a
commit 31036dd
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d2dbe08ddceb4ba2b274abb84326d7e69d454e5c
+refs/heads/master: cc8ef6eb21e964b1c5eb97b2d0e8ac9893e1bf86
diff --git a/trunk/include/linux/kernel.h b/trunk/include/linux/kernel.h
@@ -734,6 +734,10 @@ struct sysinfo {
 /* Force a compilation error if condition is constant and true */
 #define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 
+/* Force a compilation error if a constant expression is not a power of 2 */
+#define BUILD_BUG_ON_NOT_POWER_OF_2(n)			\
+	BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
+
 /* Force a compilation error if condition is true, but also produce a
    result (of value 0 and type size_t), so the expression can be used
    e.g. in a structure initializer (or where-ever else comma expressions