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authorJames Morris <jmorris@namei.org>2010-11-09 17:01:31 -0500
committerJames Morris <jmorris@namei.org>2010-11-09 17:01:31 -0500
commit074e61ec3751da9ab88ee66d3818574556c03489 (patch)
tree3834a37449096666ee01cab236a8240644adc4f8 /include/linux/kernel.h
parentf6614b7bb405a9b35dd28baea989a749492c46b2 (diff)
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>
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b526947bdf48..3f648d204c37 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -58,6 +58,8 @@ extern const char linux_proc_banner[];
58 58
59#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f)) 59#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
60#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) 60#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
61
62/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
61#define roundup(x, y) ( \ 63#define roundup(x, y) ( \
62{ \ 64{ \
63 const typeof(y) __y = y; \ 65 const typeof(y) __y = y; \