Commit c2853c8d authored Jun 12, 2013 by Alex Shi Committed by Linus Torvalds Jun 12, 2013

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>

parent 89dc991f

include/linux/math64.h

+4 −2

Original line number	Diff line number	Diff line
		@@ -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)