On Tue, 2007-03-13 at 21:55 +0100, Andi Kleen wrote: > On Tue, Mar 13, 2007 at 10:31:27AM -0700, Jeremy Fitzhardinge wrote: > > Andi Kleen wrote: > > > On Tue, Mar 13, 2007 at 05:39:36PM +1100, Rusty Russell wrote: > > > > > >> GCC (4.1 at least) unrolls it anyway, but I can't believe this code > > >> > > > > > > Are you sure? Normally it doesn't unroll without -funroll-loops which > > > the kernel does normally not set. Especially not with -Os builds. > > > > > > > Does it matter either way in this case? > > It's in the middle of the context switch.
Well, the rest of __switch_to isn't "0PTIM1Z3D!!!" like this. But even so, that's no excuse for crap code. If it had used memcpy, we wouldn't be wasting cycles on this discussion. Rusty. - 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/
