The following commit has been merged into the objtool/core branch of tip: Commit-ID: 55156d43d62124a92ab80c8f31661609465e257b Gitweb: https://git.kernel.org/tip/55156d43d62124a92ab80c8f31661609465e257b Author: Thomas Weißschuh <linux@xxxxxxxxxxxxxx> AuthorDate: Tue, 27 Dec 2022 16:01:02 Committer: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> CommitterDate: Mon, 30 Jan 2023 16:28:20 -08:00 objtool: Optimize layout of struct symbol Reduce the size of struct symbol on x86_64 from 208 to 200 bytes. This structure is allocated a lot and never freed. This reduces maximum memory usage while processing vmlinux.o from 2919716 KB to 2917988 KB (-0.5%) on my notebooks "localmodconfig". Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20221216-objtool-memory-v2-6-17968f85a464@xxxxxxxxxxxxxx Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> --- tools/objtool/include/objtool/elf.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h index 1c90f0a..ad0024d 100644 --- a/tools/objtool/include/objtool/elf.h +++ b/tools/objtool/include/objtool/elf.h @@ -50,12 +50,11 @@ struct symbol { GElf_Sym sym; struct section *sec; char *name; - unsigned int idx; - unsigned char bind, type; + unsigned int idx, len; unsigned long offset; - unsigned int len; unsigned long __subtree_last; struct symbol *pfunc, *cfunc, *alias; + unsigned char bind, type; u8 uaccess_safe : 1; u8 static_call_tramp : 1; u8 retpoline_thunk : 1;
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