diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 23:41:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 23:41:19 -0800 |
| commit | e2dc4957349a7a15f87ac2ea6367b129192769e1 (patch) | |
| tree | f5c510a37b8fb08363bd00697e5a777a088c2a48 /include/linux/compiler_types.h | |
| parent | f986e350833347cb605d9d1ed517325c9a97808d (diff) | |
| parent | 8d0dd23c6c78d140ed2132f523592ddb4cea839f (diff) | |
Merge tag 'asm-generic-cleanup-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"These are a couple of compiler warning fixes to make 'make W=2' less
noisy, as well as some fixes to code comments in asm-generic"
* tag 'asm-generic-cleanup-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
syscalls: Fix file comments for syscalls implemented in kernel/sys.c
ctype.h: remove duplicate isdigit() helper
qspinlock: use signed temporaries for cmpxchg
asm-generic: fix ffs -Wshadow warning
asm-generic: percpu: avoid Wshadow warning
asm-generic/sembuf: Update architecture related information in comment
Diffstat (limited to 'include/linux/compiler_types.h')
| -rw-r--r-- | include/linux/compiler_types.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index ac3fa37a84f9..bbaa39e98f9f 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -64,6 +64,17 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { } /* Attributes */ #include <linux/compiler_attributes.h> +/* Builtins */ + +/* + * __has_builtin is supported on gcc >= 10, clang >= 3 and icc >= 21. + * In the meantime, to support gcc < 10, we implement __has_builtin + * by hand. + */ +#ifndef __has_builtin +#define __has_builtin(x) (0) +#endif + /* Compiler specific macros. */ #ifdef __clang__ #include <linux/compiler-clang.h> |