Messages in this thread | | | Date | Thu, 24 Aug 2006 23:49:19 +0200 | From | Adrian Bunk <> | Subject | Re: [PATCH 0/4] Compile kernel with -fwhole-program --combine |
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On Thu, Aug 24, 2006 at 04:24:28PM +0100, David Woodhouse wrote: >... > Using a combination of these two compiler options for building kernel > code leads to some useful optimisation -- especially with modules which > are made up of a bunch of incestuous C files, where none of the global > symbols actually _need_ to be visible outside the directory they reside > in. File systems are a prime example of this -- on PPC64 I see a > reduction in size of ext3.ko by 2.6%, jffs2.ko by 5%, cifs.ko by 8% and > befs.ko by a scary 14%. Strangely, udf.ko seems to have _grown_ by 6.6% > -- that'll probably be another optimisation bug like GCC PR28755. >...
Looks good. :-)
What kernel are your patches against?
2.6.18-rc4 gives me:
<-- snip -->
... CHK include/linux/version.h CHK include/linux/utsrelease.h CC arch/i386/kernel/asm-offsets.s GEN include/asm-i386/asm-offsets.h HOSTCC scripts/kallsyms HOSTCC scripts/conmakehash HOSTCC scripts/bin2c make[1]: *** No rule to make target `/home/bunk/linux/linux-2.6.18-rc4/dummy.c', needed by `init/init.o'. Stop. make: *** [init] Error 2
<-- snip -->
> dwmw2
cu Adrian
--
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