1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b6de9a6f7018..a35b4f7332f0 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -56,6 +56,8 @@
 
 #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;                        \