>> Seems all these bug checks are fairly expensive. I can get 1%
>> back on system time for kernel compiles by changing BUG to
>> "do {} while (0)" to make them all compile away. Profiles aren't
>> very revealing though ... seems to be within experimental error ;-(
>
> What happens if you just turn BUG_ON into "do {} while (0)"?
I believe I already did that by turning BUG() into a null expression.
#define BUG_ON(condition)
do { if (unlikely((condition)!=0)) BUG(); } while(0)
The compiler should be smart enough to optimise that away, methinks.
M.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Apr 15 2003 - 22:00:36 EST