On Fri, May 09, 2014 at 10:43:09PM +0200, Peter Zijlstra wrote: > On Fri, May 09, 2014 at 08:32:41PM +0200, Hans-Christian Egtvedt wrote:
> > > - if (__builtin_constant_p(i) && (i >= -1048575) && (i <= 1048576)) > > > - result = atomic_sub_return(-i, v); > > > > I do not recall why we did it like this any more, I would assume both sub > > and > > add to be single cycle instructions. Similarly, can I rip out atomic_sub_unless() ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
