4.15-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 @@ -271,6 +271,10 @@ 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