The patch titled
Subject: compiler: enable CONFIG_OPTIMIZE_INLINING forcibly
has been added to the -mm tree. Its filename is
compiler-enable-config_optimize_inlining-forcibly.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/compiler-enable-config_optimize_inlining-forcibly.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/compiler-enable-config_optimize_inlining-forcibly.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
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>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
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
@@ -327,7 +327,7 @@ 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
@@ -338,8 +338,6 @@ 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
_
Patches currently in -mm which might be from yamada.masahiro@xxxxxxxxxxxxx are
linux-coffh-add-include-guard.patch
compiler-enable-config_optimize_inlining-forcibly.patch
