From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Wed, 19 Dec 2018 11:03:16 +0000 (+0900)
Subject: linux/kernel.h: import DIV_ROUND_CLOSEST_ULL from Linux
X-Git-Tag: v2019.01-rc3~13^2~5
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b32aa9ebc57b8db5052e3b97dc5a3349cd91636b;p=oweals%2Fu-boot.git

linux/kernel.h: import DIV_ROUND_CLOSEST_ULL from Linux

Copied from Linux v4.20-rc7.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index bd88483b9f..a85c15d8dc 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -102,6 +102,18 @@
 		(((__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