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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-04 19:47:38 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-04 19:47:38 +0100 |
| commit | f4f6a2e329523e1a795e5e5c0799feee997aa053 (patch) | |
| tree | fefe562edc36631a79f5af415f9f6088791fcfef | |
| parent | Linux 5.11-rc2 (diff) | |
| parent | Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK (diff) | |
| download | linux-f4f6a2e329523e1a795e5e5c0799feee997aa053.tar.xz linux-f4f6a2e329523e1a795e5e5c0799feee997aa053.zip | |
Merge tag 'compiler-attributes-for-linus-v5.11' of git://github.com/ojeda/linux
Pull ENABLE_MUST_CHECK removal from Miguel Ojeda:
"Remove CONFIG_ENABLE_MUST_CHECK (Masahiro Yamada)"
Note that this removes the config option by making the must-check
unconditional, not by removing must check itself.
* tag 'compiler-attributes-for-linus-v5.11' of git://github.com/ojeda/linux:
Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK
| -rw-r--r-- | include/linux/compiler_attributes.h | 6 | ||||
| -rw-r--r-- | include/linux/compiler_types.h | 6 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 8 | ||||
| -rw-r--r-- | tools/testing/selftests/wireguard/qemu/debug.config | 1 |
4 files changed, 6 insertions, 15 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h index b2a3f4f641a7..ea5e04e75845 100644 --- a/include/linux/compiler_attributes.h +++ b/include/linux/compiler_attributes.h @@ -273,6 +273,12 @@ #define __used __attribute__((__used__)) /* + * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-warn_005funused_005fresult-function-attribute + * clang: https://clang.llvm.org/docs/AttributeReference.html#nodiscard-warn-unused-result + */ +#define __must_check __attribute__((__warn_unused_result__)) + +/* * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-weak-function-attribute * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-weak-variable-attribute */ diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index bbaa39e98f9f..e5dd5a4ae946 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -121,12 +121,6 @@ struct ftrace_likely_data { unsigned long constant; }; -#ifdef CONFIG_ENABLE_MUST_CHECK -#define __must_check __attribute__((__warn_unused_result__)) -#else -#define __must_check -#endif - #if defined(CC_USING_HOTPATCH) #define notrace __attribute__((hotpatch(0, 0))) #elif defined(CC_USING_PATCHABLE_FUNCTION_ENTRY) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index e6e58b26e888..7937265ef879 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -295,14 +295,6 @@ config GDB_SCRIPTS endif # DEBUG_INFO -config ENABLE_MUST_CHECK - bool "Enable __must_check logic" - default y - help - Enable the __must_check logic in the kernel build. Disable this to - suppress the "warning: ignoring return value of 'foo', declared with - attribute warn_unused_result" messages. - config FRAME_WARN int "Warn for stack frames larger than" range 0 8192 diff --git a/tools/testing/selftests/wireguard/qemu/debug.config b/tools/testing/selftests/wireguard/qemu/debug.config index b50c2085c1ac..fe07d97df9fa 100644 --- a/tools/testing/selftests/wireguard/qemu/debug.config +++ b/tools/testing/selftests/wireguard/qemu/debug.config @@ -1,5 +1,4 @@ CONFIG_LOCALVERSION="-debug" -CONFIG_ENABLE_MUST_CHECK=y CONFIG_FRAME_POINTER=y CONFIG_STACK_VALIDATION=y CONFIG_DEBUG_KERNEL=y |