Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 08/29] tools include: Adopt __compiletime_error | Date | Mon, 4 Jun 2018 08:58:04 +0200 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
commit 4900653829175f60356efc279695bb23c59483c3 upstream.
>From the kernel, get the gcc one and provide the fallback so that we can continue build with other compilers, such as with clang.
Will be used by tools/arch/x86/include/asm/cmpxchg.h.
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-pecgz6efai4a9euuk4rxuotr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- tools/include/linux/compiler-gcc.h | 4 ++++ tools/include/linux/compiler.h | 4 ++++ 2 files changed, 8 insertions(+)
--- a/tools/include/linux/compiler-gcc.h +++ b/tools/include/linux/compiler-gcc.h @@ -12,3 +12,7 @@ #if GCC_VERSION >= 70000 && !defined(__CHECKER__) # define __fallthrough __attribute__ ((fallthrough)) #endif + +#if GCC_VERSION >= 40300 +# define __compiletime_error(message) __attribute__((error(message))) +#endif /* GCC_VERSION >= 40300 */ --- a/tools/include/linux/compiler.h +++ b/tools/include/linux/compiler.h @@ -5,6 +5,10 @@ #include <linux/compiler-gcc.h> #endif +#ifndef __compiletime_error +# define __compiletime_error(message) +#endif + /* Optimization barrier */ /* The "volatile" is due to gcc bugs */ #define barrier() __asm__ __volatile__("": : :"memory")
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