diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-10 11:41:11 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-13 14:29:29 -0300 |
| commit | 192614010a5052fe92611c7076ef664fd9bb60e8 (patch) | |
| tree | f0f039eae81608c75be773f63a37051f60344ff0 /tools/include | |
| parent | f2029b1e47b607619d1dd2cb0bbb77f64ec6b7c2 (diff) | |
tools include: Introduce linux/compiler-gcc.h
To match the kernel headers structure, setting up things that are
specific to gcc or to some specific version of gcc.
It gets included by linux/compiler.h when gcc is the compiler being
used.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fabcqfq4asodq9t158hcs8t3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/linux/compiler-gcc.h | 14 | ||||
| -rw-r--r-- | tools/include/linux/compiler.h | 10 |
2 files changed, 19 insertions, 5 deletions
diff --git a/tools/include/linux/compiler-gcc.h b/tools/include/linux/compiler-gcc.h new file mode 100644 index 000000000000..48af2f10a42d --- /dev/null +++ b/tools/include/linux/compiler-gcc.h @@ -0,0 +1,14 @@ +#ifndef _TOOLS_LINUX_COMPILER_H_ +#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." +#endif + +/* + * Common definitions for all gcc versions go here. + */ +#define GCC_VERSION (__GNUC__ * 10000 \ + + __GNUC_MINOR__ * 100 \ + + __GNUC_PATCHLEVEL__) + +#if GCC_VERSION >= 70000 && !defined(__CHECKER__) +# define __fallthrough __attribute__ ((fallthrough)) +#endif diff --git a/tools/include/linux/compiler.h b/tools/include/linux/compiler.h index d94179f94caa..6326ede9aece 100644 --- a/tools/include/linux/compiler.h +++ b/tools/include/linux/compiler.h @@ -1,6 +1,10 @@ #ifndef _TOOLS_LINUX_COMPILER_H_ #define _TOOLS_LINUX_COMPILER_H_ +#ifdef __GNUC__ +#include <linux/compiler-gcc.h> +#endif + /* Optimization barrier */ /* The "volatile" is due to gcc bugs */ #define barrier() __asm__ __volatile__("": : :"memory") @@ -128,11 +132,7 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s #ifndef __fallthrough -# if defined(__GNUC__) && __GNUC__ >= 7 -# define __fallthrough __attribute__ ((fallthrough)) -# else -# define __fallthrough -# endif +# define __fallthrough #endif #endif /* _TOOLS_LINUX_COMPILER_H */ |