1 files changed, 11 insertions, 13 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 604382143bcf..a123b13b70fd 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -1,15 +1,6 @@
 #ifndef _LINUX_KERNEL_H
 #define _LINUX_KERNEL_H
 
-#include <linux/sysinfo.h>
-
-/*
- * 'kernel.h' contains some often-used function prototypes etc
- */
-#define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_KERNEL_MASK(x, mask)    (((x) + (mask)) & ~(mask))
-
-#ifdef __KERNEL__
 
 #include <stdarg.h>
 #include <linux/linkage.h>
@@ -22,6 +13,7 @@
 #include <linux/printk.h>
 #include <linux/dynamic_debug.h>
 #include <asm/byteorder.h>
+#include <uapi/linux/kernel.h>
 
 #define USHRT_MAX       ((u16)(~0U))
 #define SHRT_MAX        ((s16)(USHRT_MAX>>1))
@@ -82,10 +74,18 @@
         __x - (__x % (y));                              \
 }                                                       \
 )
+
+/*
+ * Divide positive or negative dividend by positive divisor and round
+ * to closest integer. Result is undefined for negative divisors.
+ */
 #define DIV_ROUND_CLOSEST(x, divisor)(                  \
 {                                                       \
-        typeof(divisor) __divisor = divisor;            \
-        (((x) + ((__divisor) / 2)) / (__divisor));      \
+        typeof(x) __x = x;                              \
+        typeof(divisor) __d = divisor;                  \
+        (((typeof(x))-1) > 0 || (__x) > 0) ?            \
+                (((__x) + ((__d) / 2)) / (__d)) :       \
+                (((__x) - ((__d) / 2)) / (__d));        \
 }                                                       \
 )
 
@@ -708,6 +708,4 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
 
 extern int do_sysinfo(struct sysinfo *info);
 
-#endif /* __KERNEL__ */
-
 #endif