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Subject[PATCH 1/4] math64: add div64_ul
Date
There are div64_long() to handle the s64/long division. But no
micro do u64/ul division in kernel.
It is necessary on some scenarios. So add this function.

Signed-off-by: Alex Shi <alex.shi@intel.com>
---
include/linux/math64.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/math64.h b/include/linux/math64.h
index b8ba855..f0afe9c 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -7,6 +7,7 @@
#if BITS_PER_LONG == 64

#define div64_long(x,y) div64_s64((x),(y))
+#define div64_ul(x,y) div64_u64((x),(y))

/**
* div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
@@ -48,6 +49,7 @@ static inline s64 div64_s64(s64 dividend, s64 divisor)
#elif BITS_PER_LONG == 32

#define div64_long(x,y) div_s64((x),(y))
+#define div64_ul(x,y) div_u64((x),(y))

#ifndef div_u64_rem
static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
--
1.7.5.4


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