diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:07:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:07:35 +0200 |
| commit | d763d5edf945eec47bd443b699f174976f0afc13 (patch) | |
| tree | 3e5cd46b9a783999716bf92176854f4f1215d930 /include/linux/math64.h | |
| parent | 790e2a290b499b0400254e6870ec27969065d122 (diff) | |
| parent | 1b40a895df6c7d5a80e71f65674060b03d84bbef (diff) | |
Merge branch 'linus' into tracing/mmiotrace
Diffstat (limited to 'include/linux/math64.h')
| -rw-r--r-- | include/linux/math64.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/math64.h b/include/linux/math64.h index c1a5f81501f..c87f1528703 100644 --- a/include/linux/math64.h +++ b/include/linux/math64.h @@ -81,4 +81,25 @@ static inline s64 div_s64(s64 dividend, s32 divisor) } #endif +u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder); + +static __always_inline u32 +__iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder) +{ + u32 ret = 0; + + while (dividend >= divisor) { + /* The following asm() prevents the compiler from + optimising this loop into a modulo operation. */ + asm("" : "+rm"(dividend)); + + dividend -= divisor; + ret++; + } + + *remainder = dividend; + + return ret; +} + #endif /* _LINUX_MATH64_H */ |