On 10/24/2012 06:29 PM, Christoph Lameter wrote: > On Wed, 24 Oct 2012, Glauber Costa wrote: > >> Because of that, we either have to move all the entry points to the >> mm/slab.h and rely heavily on the pre-processor, or include all .c files >> in here. > > Hmm... That is a bit of a radical solution. The global optimizations now > possible with the new gcc compiler include the ability to fold functions > across different linkable objects. Andi, is that usable for kernel builds? >
In general, it takes quite a lot of time to take all those optimizations for granted. We still live a lot of time with multiple compiler versions building distros, etc, for quite some time. I would expect the end result for anyone not using such a compiler to be a sudden performance drop when using a new kernel. Not really pleasant. -- 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/
