Yinghai Lu wrote: > Linus Torvalds wrote: >> On Tue, 30 Jun 2009, Linus Torvalds wrote: >>> I don't see any single-use trick then, and so it needs the whole statement >>> expression mess. >> Hmm. Does (((x)-1) | mask)+1) work? >> >> I haven't thought it fully through, but that _should_ take care of the >> "already aligned" case, no? > > yes. that is right. > > then how about > roundup(x,y) > round_up(x,y) > > roundup doesn't need y is 2^n > but round_up does need y is 2^n, and only for x86 > We should definitely move whatever to global. However, I do think it is valuable to have something that can avoid divides even if the argument is not necessarily a constant. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
