On Mon, Apr 14, 2003 at 10:40:41PM +0200, Duncan Sands wrote:
> You would think that the compiler would consider a branch leading to
> ud2 (i.e. BUG()) to be "unlikely", but it doesn't seem to. Maybe some
> improvement can be made there.
BUG_ON is already marked unlikely.
See include/linux/kernel.h
The costs here are doing the actual checks, nothing to do with
the branch prediction.
Dave
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