1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d6d630d31ef3..3a5b48e52a9e 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -103,6 +103,18 @@
                 (((__x) - ((__d) / 2)) / (__d));        \
 }                                                       \
 )
+/*
+ * Same as above but for u64 dividends. divisor must be a 32-bit
+ * number.
+ */
+#define DIV_ROUND_CLOSEST_ULL(x, divisor)(              \
+{                                                       \
+        typeof(divisor) __d = divisor;                  \
+        unsigned long long _tmp = (x) + (__d) / 2;      \
+        do_div(_tmp, __d);                              \
+        _tmp;                                           \
+}                                                       \
+)
 
 /*
  * Multiplies an integer by a fraction, while avoiding unnecessary