Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ea01e798 authored Mar 13, 2008 by Rusty Russell

module: reduce module image and resident size



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 <jbeulich@novell.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent a58730c4

include/linux/module.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -190,7 +190,7 @@ void __symbol_get_gpl(const char symbol);
		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 \

kernel/module.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1828,8 +1828,9 @@ static struct module load_module(void __user umod,
		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;