We already have DIV_ROUND_CLOSEST, but no DIV_ROUND_CLOSEST_ULL.
Import the latter for use by later commits.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
include/linux/kernel.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b320f7e902f0..23c23a73f588 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -6,6 +6,7 @@
#include <linux/bug.h>
#include <linux/barebox-wrapper.h>
#include <linux/limits.h>
+#include <asm-generic/div64.h>
#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1)
#define ALIGN_DOWN(x, a) ALIGN((x) - ((a) - 1), (a))
@@ -41,6 +42,18 @@
(((x) + ((__divisor) / 2)) / (__divisor)); \
} \
)
+/*
+ * 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; \
+} \
+)
/**
* upper_32_bits - return bits 32-63 of a number
--
2.26.0.rc2
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