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author | Clark Williams <williams@redhat.com> | 2012-04-14 09:13:39 -0500 |
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committer | Clark Williams <williams@redhat.com> | 2012-04-14 09:13:39 -0500 |
commit | 4905660cd237e4c4ede46920851caa12739f006f (patch) | |
tree | ef37e7c9f52c9ae9c2b206658556f37d67fe43eb /include/linux/kernel.h | |
parent | 1b5e39fc18a1b8ff7ea425ce5f49307cb28a880f (diff) | |
parent | 0147c2ae9d602b5791dae30322ece475271acd10 (diff) |
Merge commit 'v3.2.15' into rt-3.2.15-rt24v3.2.15-rt24
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r-- | include/linux/kernel.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index c485aaa618d6..22bdd4bf0e1b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -85,6 +85,19 @@ } \ ) +/* + * Multiplies an integer by a fraction, while avoiding unnecessary + * overflow or loss of precision. + */ +#define mult_frac(x, numer, denom)( \ +{ \ + typeof(x) quot = (x) / (denom); \ + typeof(x) rem = (x) % (denom); \ + (quot * (numer)) + ((rem * (numer)) / (denom)); \ +} \ +) + + #define _RET_IP_ (unsigned long)__builtin_return_address(0) #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) |