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tools include: Introduce linux/compiler-gcc.h

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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-02-10 11:41:11 -03:00
parent f2029b1e47
commit 192614010a
3 changed files with 20 additions and 5 deletions
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10
tools/include/linux/compiler.h
View file

@ -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 */