renegade-project/linux-next
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linux-next/arch/x86/configs
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Ingo Molnar 60a3cdd063 x86: add optimized inlining 
add CONFIG_OPTIMIZE_INLINING=y.

allow gcc to optimize the kernel image's size by uninlining
functions that have been marked 'inline'. Previously gcc was
forced by Linux to always-inline these functions via a gcc
attribute:

 #define inline	inline __attribute__((always_inline))

Especially when the user has already selected
CONFIG_OPTIMIZE_FOR_SIZE=y this can make a huge difference in
kernel image size (using a standard Fedora .config):

   text    data     bss     dec           hex filename
   5613924  562708 3854336 10030968    990f78 vmlinux.before
   5486689  562708 3854336  9903733    971e75 vmlinux.after

that's a 2.3% text size reduction (!).

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26 17:44:55 +02:00
..
i386_defconfig x86: add optimized inlining 2008-04-26 17:44:55 +02:00
x86_64_defconfig x86: add optimized inlining 2008-04-26 17:44:55 +02:00