Thoughts?
Thanx, Paul
----- Forwarded message from Jesper Juhl jj@chaosbits.net -----
Date: Sun, 6 Mar 2011 00:49:58 +0100 (CET) From: Jesper Juhl jj@chaosbits.net To: linux-kernel@vger.kernel.org cc: Andrew Morton akpm@linux-foundation.org, "Paul E. McKenney" paulmck@linux.vnet.ibm.com, Ingo Molnar mingo@elte.hu, Daniel Lezcano daniel.lezcano@free.fr, Eric Paris eparis@redhat.com, Roman Zippel zippel@linux-m68k.org Subject: [PATCH][RFC] CC_OPTIMIZE_FOR_SIZE should default to N
I believe that the majority of systems we are built on want a -O2 compiled kernel. Optimizing for size (-Os) is mainly benneficial for embedded systems and systems with very small CPU caches (correct me if I'm wrong). So it seems wrong to me that CC_OPTIMIZE_FOR_SIZE defaults to 'y' and recommends saying 'Y' if unsure. I believe it should default to 'n' and recommend that if unsure. People who bennefit from -Os know who they are and can enable the option if needed/wanted - the majority shouldn't select this. Right?
Signed-off-by: Jesper Juhl jj@chaosbits.net --- Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig index be788c0..7e16268 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -886,12 +886,12 @@ endif
config CC_OPTIMIZE_FOR_SIZE bool "Optimize for size" - default y + default n help Enabling this option will pass "-Os" instead of "-O2" to gcc resulting in a smaller kernel.
- If unsure, say Y. + If unsure, say N.
config SYSCTL bool