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| author | Sasha Levin <levinsasha928@gmail.com> | 2012-03-15 12:36:13 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-02 09:27:09 -0700 |
| commit | 6368b0424486055c636cdc47af3de83d81478f7f (patch) | |
| tree | 2055e3508530a6a14876be308773caafe78ea815 /include | |
| parent | 75e375312eb27ce49f71ed760e12fe770a32f579 (diff) | |
| download | lwn-6368b0424486055c636cdc47af3de83d81478f7f.tar.gz lwn-6368b0424486055c636cdc47af3de83d81478f7f.zip | |
math: Introduce div64_long
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/math64.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/math64.h b/include/linux/math64.h index 23fcdfcba81b..b8ba85544721 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) { |