Messages in this thread | | | Date | Tue, 15 Apr 2003 14:31:34 +0200 | From | Jens Axboe <> | Subject | Re: BUGed to death |
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On Tue, Apr 15 2003, Duncan Sands wrote: > On Monday 14 April 2003 22:19, Martin J. Bligh wrote: > > 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)"?
If you do that, you must audit every single BUG_ON to make sure the expression doesn't have any side effects.
BUG_ON(do_the_good_stuff());
-- Jens Axboe, proud inventer of BUG_ON :-)
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