From: James Morris <jmorris@namei.org>
Date: Tue, 9 Nov 2010 22:01:31 +0000 (+1100)
Subject: kernel: add roundup() code comment from akpm
X-Git-Tag: v2.6.38-rc1~429^2~20
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=074e61ec3751da9ab88ee66d3818574556c03489;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

kernel: add roundup() code comment from akpm

Add roundup() code comment from akpm.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b526947..3f648d2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -58,6 +58,8 @@ extern const char linux_proc_banner[];
 
 #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
+/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
 #define roundup(x, y) (					\
 {							\
 	const typeof(y) __y = y;			\