The patch titled
modules: reduce module image and resident size
has been added to the -mm tree. Its filename is
reduce-module-image-and-resident-size.patch
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------------------------------------------------------
Subject: modules: reduce module image and resident size
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/module.h | 2 +-
kernel/module.c | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff -puN include/linux/module.h~reduce-module-image-and-resident-size include/linux/module.h
--- a/include/linux/module.h~reduce-module-image-and-resident-size
+++ a/include/linux/module.h
@@ -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 \
diff -puN kernel/module.c~reduce-module-image-and-resident-size kernel/module.c
--- a/kernel/module.c~reduce-module-image-and-resident-size
+++ a/kernel/module.c
@@ -1814,8 +1814,9 @@ 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;
_
Patches currently in -mm which might be from jbeulich@xxxxxxxxxx are
lib-swiotlbc-avoid-endless-loops-fix.patch
git-x86.patch
lib-swiotlbc-cleanups.patch
reduce-module-image-and-resident-size.patch
make-module_sect_attrs-private-to-kernel-modulec.patch
fix-verify_export_symbols.patch
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