datapath: Backport DIV_ROUND_UP.

Older kernels didn't define DIV_ROUND_UP, so this provides a
backported version.

Signed-off-by: Jesse Gross <jesse@nicira.com>

diff --git a/datapath/linux-2.6/compat-2.6/include/linux/kernel.h b/datapath/linux-2.6/compat-2.6/include/linux/kernel.h
index 2c2220b9f0b3fb73d69c837bc542944c1a2823cb..4af88516edd7ba65f1099078e1b32ea4a3ae76da 100644 (file)
--- a/datapath/linux-2.6/compat-2.6/include/linux/kernel.h
+++ b/datapath/linux-2.6/compat-2.6/include/linux/kernel.h
@@ -54,4 +54,8 @@
 #define SHRT_MIN       ((s16)(-SHRT_MAX - 1))
 #endif
 
+#ifndef DIV_ROUND_UP
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#endif
+
 #endif /* linux/kernel.h */