From: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Subject: compiler: enable CONFIG_OPTIMIZE_INLINING forcibly
Commit 9012d011660e ("compiler: allow all arches to enable
CONFIG_OPTIMIZE_INLINING") allowed all architectures to enable this
option. A couple of build errors were reported by randconfig, but all of
them have been ironed out.
Towards the goal of removing CONFIG_OPTIMIZE_INLINING entirely (and it
will simplify the 'inline' macro in compiler_types.h), this commit changes
it to always-on option. Going forward, the compiler will always be
allowed to not inline functions marked 'inline'.
This is not a problem for x86 since it has been long used by
arch/x86/configs/{x86_64,i386}_defconfig.
I am keeping the config option just in case any problem crops up for other
architectures.
The code clean-up will be done after confirming this is solid.
Link: http://lkml.kernel.org/r/20190830034304.24259-1-yamada.masahiro@xxxxxxxxxxxxx
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Acked-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Kconfig.debug | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/lib/Kconfig.debug~compiler-enable-config_optimize_inlining-forcibly
+++ a/lib/Kconfig.debug
@@ -311,7 +311,7 @@ config HEADERS_CHECK
relevant for userspace, say 'Y'.
config OPTIMIZE_INLINING
- bool "Allow compiler to uninline functions marked 'inline'"
+ def_bool y
help
This option determines if the kernel forces gcc to inline the functions
developers have marked 'inline'. Doing so takes away freedom from gcc to
@@ -322,8 +322,6 @@ config OPTIMIZE_INLINING
decision will become the default in the future. Until then this option
is there to test gcc for this.
- If unsure, say N.
-
config DEBUG_SECTION_MISMATCH
bool "Enable full Section mismatch analysis"
help
_
