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include/linux/math64.h: add div64_ul()
There is div64_long() to handle the s64/long division, but no mocro do u64/ul division. It is necessary in some scenarios, so add this function. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alex Shi <alex.shi@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -6,7 +6,8 @@
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#if BITS_PER_LONG == 64
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#define div64_long(x,y) div64_s64((x),(y))
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#define div64_long(x, y) div64_s64((x), (y))
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#define div64_ul(x, y) div64_u64((x), (y))
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/**
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* div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
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@ -47,7 +48,8 @@ static inline s64 div64_s64(s64 dividend, s64 divisor)
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#elif BITS_PER_LONG == 32
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#define div64_long(x,y) div_s64((x),(y))
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#define div64_long(x, y) div_s64((x), (y))
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#define div64_ul(x, y) div_u64((x), (y))
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#ifndef div_u64_rem
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static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
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