diff options
| author |   Thomas Weißschuh <linux@weissschuh.net> | 2022-12-27 16:01:02 +0000 |
|---|---|---|
| committer |   Josh Poimboeuf <jpoimboe@kernel.org> | 2023-02-01 09:15:24 -0800 |
| commit | 21a899f9fc78be6b289ee4627bccadf560930eb5 (patch) | |
| tree | 6c0356e98fcbbc46872fdf9563948c94e149c999 /tools/objtool/include | |
| parent | objtool: Allocate multiple structures with calloc() (diff) | |
| download | wireguard-linux-21a899f9fc78be6b289ee4627bccadf560930eb5.tar.xz wireguard-linux-21a899f9fc78be6b289ee4627bccadf560930eb5.zip | |
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@weissschuh.net>
Link: https://lore.kernel.org/r/20221216-objtool-memory-v2-6-17968f85a464@weissschuh.net
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'tools/objtool/include')
| -rw-r--r-- | tools/objtool/include/objtool/elf.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h index 1c90f0ac0d53..ad0024da262b 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; |