On Fri, 2012-10-26 at 12:44 +0200, Peter Zijlstra wrote: > > We can still have the user space interface handing in the information > > in nsec resolution, but it's reasonable to scale it down to something > > useful. Just shift the incoming information right by 10, so you're in > > the 1us resolution for all the internal math and all your limitation > > problems are gone. A shift by ten for converting back and forth to > > nsecs is not a real performance issue. > > I'm fine with that.. all I wanted was to not have the undefined overflow > we initially had.
Note that we still need the constraint checking with this, although with both values shifted right 10 bits the range is now much bigger and shouldn't be a practical limit anymore. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
