| From f910381a55cdaa097030291f272f6e6e4380c39a Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <levinsasha928@gmail.com> |
| Date: Thu, 15 Mar 2012 12:36:13 -0400 |
| Subject: math: Introduce div64_long |
| |
| From: Sasha Levin <levinsasha928@gmail.com> |
| |
| commit f910381a55cdaa097030291f272f6e6e4380c39a upstream. |
| |
| 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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| include/linux/math64.h | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| --- 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 |
| |
| #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) |
| { |
