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authorSasha Levin <levinsasha928@gmail.com>2012-03-15 12:36:13 -0400
committerThomas Gleixner <tglx@linutronix.de>2012-03-15 21:41:34 +0100
commitf910381a55cdaa097030291f272f6e6e4380c39a (patch)
tree283c2b97036b20fa12723d005cc494b60d3a1fd6
parentc0a239233331f7d6d2256dde80cb19fd6f9b3542 (diff)
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op-kernel-dev-f910381a55cdaa097030291f272f6e6e4380c39a.tar.gz
math: Introduce div64_long
Add a div64_long macro which is used to devide a 64bit number by a long (which can be 4 bytes on 32bit systems and 8 bytes on 64bit systems). Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Cc: johnstul@us.ibm.com Link: http://lkml.kernel.org/r/1331829374-31543-1-git-send-email-levinsasha928@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--include/linux/math64.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/math64.h b/include/linux/math64.h
index 23fcdfc..b8ba855 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -6,6 +6,8 @@
#if BITS_PER_LONG == 64
+#define div64_long(x,y) div64_s64((x),(y))
+
/**
* div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
*
@@ -45,6 +47,8 @@ static inline s64 div64_s64(s64 dividend, s64 divisor)
#elif BITS_PER_LONG == 32
+#define div64_long(x,y) div_s64((x),(y))
+
#ifndef div_u64_rem
static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
{
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