* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > On Sun, 27 Apr 2008, Arjan van de Ven wrote: > > > > (actually, other than some obscure commandline options, the only > > sane way to avoid gcc doing this too agressive is using -Os) > > Well, CC_OPTIMIZE_FOR_SIZE has been defaulting to 'y' for a *loong* > time, but it's hidden behind a EXPERIMENTAL (unless you were on some > embedded architectures), so many people won't see it. > > Perhaps it is time to remove the EXPERIMENTAL? I think the gcc > warnings were mostly bogus - it's not as if there haven't been > compiler bugs without -Os too.. i was wondering about that when doing the OPTIMIZE_INLINING change - lets do something like the patch below? Ingo --------------> Subject: make CC_OPTIMIZE_FOR_SIZE non-experimental From: Ingo Molnar <mingo@xxxxxxx> Date: Mon Apr 28 01:39:43 CEST 2008 this option has been the default on a wide range of distributions for a long time - time to make it non-experimental. Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- init/Kconfig | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) Index: linux-x86.q/init/Kconfig =================================================================== --- linux-x86.q.orig/init/Kconfig +++ linux-x86.q/init/Kconfig @@ -496,16 +496,12 @@ source "usr/Kconfig" endif config CC_OPTIMIZE_FOR_SIZE - bool "Optimize for size (Look out for broken compilers!)" + bool "Optimize for size" default y - depends on ARM || H8300 || SUPERH || EXPERIMENTAL help Enabling this option will pass "-Os" instead of "-O2" to gcc resulting in a smaller kernel. - WARNING: some versions of gcc may generate incorrect code with this - option. If problems are observed, a gcc upgrade may be needed. - If unsure, say N. config SYSCTL -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
