lør, 09 02 2008 kl. 10:29 +0100, skrev Michael Opdenacker: > On 02/09/2008 09:30 AM, Simon Holm Thøgersen wrote: > > The build of my currently running kernel for my laptop has > > $ size -t amd.o cyrix.o centaur.o transmeta.o intel.o nexgen.o umc.o > > text data bss dec hex filename > > 2809 316 0 3125 c35 amd.o > > 2387 856 0 3243 cab cyrix.o > > 1514 312 0 1826 722 centaur.o > > 1279 312 0 1591 637 transmeta.o > > 1783 316 0 2099 833 intel.o > > 126 312 0 438 1b6 nexgen.o > > 41 312 0 353 161 umc.o > > 9939 2736 0 12675 3183 (TOTALS) > > > > That is without optimize for size compilation, with that set I get > > $ size -t amd.o cyrix.o centaur.o transmeta.o intel.o nexgen.o umc.o > > text data bss dec hex filename > > 2300 316 0 2616 a38 amd.o > > 2132 820 0 2952 b88 cyrix.o > > 1325 312 0 1637 665 centaur.o > > 1151 312 0 1463 5b7 transmeta.o > > 1575 316 0 1891 763 intel.o > > 107 312 0 419 1a3 nexgen.o > > 41 312 0 353 161 umc.o > > 8631 2700 0 11331 2c43 (TOTALS) > > > > I don't think the code changes in the patch do much with respect to > > size. > > > Thanks for this report. Don't you think it's still useful to save up to > 12 K of code that you don't use if you just have an Intel processor (for > example)?
The last remark was only about the code changes in arch/x86/kernel/cpu/common.c, arch/x86/kernel/process_32.c, arch/x86/kernel/process_64.c and arch/x86/mm/init_32.c, which my report didn't reflect upon since I never applied the patch. The ~12kB reduction no doubt has a good gain/pain ratio. Out of curiosity, how small a kernel are you targeting this work for? I guess your other post on 'make allnoconfig + CONFIG_EMBEDDED' has disabled more stuff than you would use in practice? Simon -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
