On Wednesday, August 3, 2016 2:44:29 PM CEST Segher Boessenkool wrote: > Hi Arnd, > > On Wed, Aug 03, 2016 at 08:52:48PM +0200, Arnd Bergmann wrote: > > From my first look, it seems that all of lib/*.o is now getting linked > > into vmlinux, while we traditionally leave out everything from lib/ > > that is not referenced. > > > > I also see a noticeable overhead in link time, the numbers are for > > a cache-hot rebuild after a successful allyesconfig build, using a > > 24-way Opteron@2.5Ghz, just relinking vmlinux: > > > > $ time make skj30 vmlinux # before > > real 2m8.092s > > user 3m41.008s > > sys 0m48.172s > > > > $ time make skj30 vmlinux # after > > real 4m10.189s > > user 5m43.804s > > sys 0m52.988s > > Is it better when using rcT instead of rcsT? It seems to be noticeably better for the clean rebuild case, though not as good as the original: real 3m34.015s user 5m7.104s sys 0m49.172s I've also tried now with my own patch applied as well (linking each drivers/*/built-in.o into vmlinux rather than having them linked into drivers/built-in.o first), but that makes no difference. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
