diff options
| author | Masahiro Yamada <[email protected]> | 2019-05-14 15:42:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-05-14 19:52:48 -0700 |
| commit | 9012d011660ea5cf2a623e1de207a2bc0ca6936d (patch) | |
| tree | f8262000f8891b8587b5c7442a3bec172aa8dbc4 /include/linux | |
| parent | efc344c57e39754416731e24e1eadd7d9b9f335e (diff) | |
compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING
Commit 60a3cdd06394 ("x86: add optimized inlining") introduced
CONFIG_OPTIMIZE_INLINING, but it has been available only for x86.
The idea is obviously arch-agnostic. This commit moves the config entry
from arch/x86/Kconfig.debug to lib/Kconfig.debug so that all
architectures can benefit from it.
This can make a huge difference in kernel image size especially when
CONFIG_OPTIMIZE_FOR_SIZE is enabled.
For example, I got 3.5% smaller arm64 kernel for v5.1-rc1.
dec file
18983424 arch/arm64/boot/Image.before
18321920 arch/arm64/boot/Image.after
This also slightly improves the "Kernel hacking" Kconfig menu as
e61aca5158a8 ("Merge branch 'kconfig-diet' from Dave Hansen') suggested;
this config option would be a good fit in the "compiler option" menu.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Boris Brezillon <[email protected]>
Cc: Brian Norris <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Marek Vasut <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mathieu Malaterre <[email protected]>
Cc: Miquel Raynal <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Russell King <[email protected]>
Cc: Stefan Agner <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compiler_types.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index ba814f18cb4c..19e58b9138a0 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -140,8 +140,7 @@ struct ftrace_likely_data { * Do not use __always_inline here, since currently it expands to inline again * (which would break users of __always_inline). */ -#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \ - !defined(CONFIG_OPTIMIZE_INLINING) +#if !defined(CONFIG_OPTIMIZE_INLINING) #define inline inline __attribute__((__always_inline__)) __gnu_inline \ __maybe_unused notrace #else |