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authorGeert Uytterhoeven <geert@linux-m68k.org>2018-02-01 11:21:58 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-02-22 15:43:53 +0100
commit3740b9f09a94660636e33bb1aa577ad8702ca7b6 (patch)
tree112352ce9e01b32f31b5003b507fbe579240926d /include
parent7b559f7f08a835ff0e720afb67c18db3e1bf1b86 (diff)
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/compiler-gcc.h4
-rw-r--r--include/linux/compiler.h4
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