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| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-02-01 11:21:58 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-22 15:43:53 +0100 |
| commit | 3740b9f09a94660636e33bb1aa577ad8702ca7b6 (patch) | |
| tree | 112352ce9e01b32f31b5003b507fbe579240926d | |
| parent | 7b559f7f08a835ff0e720afb67c18db3e1bf1b86 (diff) | |
| download | linux-rt-3740b9f09a94660636e33bb1aa577ad8702ca7b6.tar.gz | |
compiler-gcc.h: Introduce __optimize function attribute
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>
| -rw-r--r-- | include/linux/compiler-gcc.h | 4 | ||||
| -rw-r--r-- | include/linux/compiler.h | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 928e5ca0caee..eb0ed31193a3 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -187,6 +187,10 @@ #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__ diff --git a/include/linux/compiler.h b/include/linux/compiler.h index cf0fa5d86059..5ce911db7d88 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -469,6 +469,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s # define __native_word(t) (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) #endif +#ifndef __optimize +# define __optimize(level) +#endif + /* Compile time object size, -1 for unknown */ #ifndef __compiletime_object_size # define __compiletime_object_size(obj) -1 |