Subject: reduce module image and resident size Date: Thu, 13 Mar 2008 09:02:17 +0000 Resulting reduction (x86-64, gcc 4.1.2) with my (special purpose, i.e. much reduced) configurations: - 16k kernel resident size - 180k module resident size - 10k module image size Signed-off-by: Jan Beulich Signed-off-by: Rusty Russell --- include/linux/module.h | 2 +- kernel/module.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff -u --- linux-2.6.25-rc5/include/linux/module.h 2008-03-10 13:24:33.000000000 +0100 +++ 2.6.25-rc5-module-reduce-size/include/linux/module.h 2008-03-04 11:26:17.000000000 +0100 @@ -190,7 +190,7 @@ void *__symbol_get_gpl(const char *symbo extern typeof(sym) sym; \ __CRC_SYMBOL(sym, sec) \ static const char __kstrtab_##sym[] \ - __attribute__((section("__ksymtab_strings"))) \ + __attribute__((section("__ksymtab_strings"), aligned(1))) \ = MODULE_SYMBOL_PREFIX #sym; \ static const struct kernel_symbol __ksymtab_##sym \ __used \ --- linux-2.6.25-rc5/kernel/module.c 2008-03-10 13:24:35.000000000 +0100 +++ 2.6.25-rc5-module-reduce-size/kernel/module.c 2008-03-04 11:26:17.000000000 +0100 @@ -1815,8 +1815,9 @@ static struct module *load_module(void _ unwindex = find_sec(hdr, sechdrs, secstrings, ARCH_UNWIND_SECTION_NAME); #endif - /* Don't keep modinfo section */ + /* Don't keep modinfo and version sections. */ sechdrs[infoindex].sh_flags &= ~(unsigned long)SHF_ALLOC; + sechdrs[versindex].sh_flags &= ~(unsigned long)SHF_ALLOC; #ifdef CONFIG_KALLSYMS /* Keep symbol and string tables for decoding later. */ sechdrs[symindex].sh_flags |= SHF_ALLOC; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/