| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 042/167] compiler-gcc.h: Introduce __optimize function attribute | Date | Wed, 21 Feb 2018 13:47:33 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Geert Uytterhoeven <geert@linux-m68k.org>
commit df5d45aa08f848b79caf395211b222790534ccc7 upstream.
Create a new function attribute __optimize, which allows to specify an optimization level on a per-function basis.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- include/linux/compiler-gcc.h | 4 ++++ include/linux/compiler.h | 4 ++++ 2 files changed, 8 insertions(+)
--- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -196,6 +196,10 @@ #endif /* __CHECKER__ */ #endif /* GCC_VERSION >= 40300 */ +#if GCC_VERSION >= 40400 +#define __optimize(level) __attribute__((__optimize__(level))) +#endif /* GCC_VERSION >= 40400 */ + #if GCC_VERSION >= 40500 #ifndef __CHECKER__ --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -266,6 +266,10 @@ static __always_inline void __write_once #endif /* __ASSEMBLY__ */ +#ifndef __optimize +# define __optimize(level) +#endif + /* Compile time object size, -1 for unknown */ #ifndef __compiletime_object_size # define __compiletime_object_size(obj) -1
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