What you might be missing is that we might be deep inside some calls. The
return optimization works by counting calls and rets. And it will be off by
one after your patch applied and all following ret predictions will fail.
This might cause pipeline stalls. And it will be worse the higher the
nesting level of the calls is.
-- Kurt Garloff <K.Garloff@ping.de> (Dortmund, FRG) PGP key on http://student.physik.uni-dortmund.de/homepages/garloffMicrosoft is not the answer. Microsoft is the question. The answer is no.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/