On 04/14/2015 11:25 AM, Martin Liška wrote:
> Because GCC trunk version has switched to GCC 6.x, new header file
> is needed.
>
> Signed-off-by: Martin Liska  <mliska@suse.cz>
> ---
>   include/linux/compiler-gcc6.h | 55 +++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 55 insertions(+)
>   create mode 100644 include/linux/compiler-gcc6.h
>
> diff --git a/include/linux/compiler-gcc6.h b/include/linux/compiler-gcc6.h
> new file mode 100644
> index 0000000..208767a
> --- /dev/null
> +++ b/include/linux/compiler-gcc6.h
> @@ -0,0 +1,55 @@
> +#ifndef __LINUX_COMPILER_H
> +#error "Please don't include <linux/compiler-gcc6.h> directly, include <linux/compiler.h> instead."
> +#endif
> +
> +#define __used                __attribute__((__used__))
> +#define __must_check            __attribute__((warn_unused_result))
> +#define __compiler_offsetof(a, b)    __builtin_offsetof(a, b)
> +
> +/* Mark functions as cold. gcc will assume any path leading to a call
> +   to them will be unlikely.  This means a lot of manual unlikely()s
> +   are unnecessary now for any paths leading to the usual suspects
> +   like BUG(), printk(), panic() etc. [but let's keep them for now for
> +   older compilers]
> +
> +   gcc also has a __attribute__((__hot__)) to move hot functions into
> +   a special section, but I don't see any sense in this right now in
> +   the kernel context */
> +#define __cold            __attribute__((__cold__))
> +
> +#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
> +
> +#ifndef __CHECKER__
> +# define __compiletime_warning(message) __attribute__((warning(message)))
> +# define __compiletime_error(message) __attribute__((error(message)))
> +#endif /* __CHECKER__ */
> +
> +/*
> + * Mark a position in code as unreachable.  This can be used to
> + * suppress control flow warnings after asm blocks that transfer
> + * control elsewhere.
> + */
> +#define unreachable() __builtin_unreachable()
> +
> +/* Mark a function definition as prohibited from being cloned. */
> +#define __noclone    __attribute__((__noclone__))
> +
> +/*
> + * Tell the optimizer that something else uses this function or variable.
> + */
> +#define __visible __attribute__((externally_visible))
> +
> +/*
> + * 'asm goto' miscompilation is fixed in GCC 5.x version:
> + *
> + *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
> + */
> +#define asm_volatile_goto(x...)    do { asm goto(x); } while (0)
> +
> +#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
> +#define __HAVE_BUILTIN_BSWAP32__
> +#define __HAVE_BUILTIN_BSWAP64__
> +#define __HAVE_BUILTIN_BSWAP16__
> +#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
> +
> +#define KASAN_ABI_VERSION 4

Hello.

v2 of the patch where I made a copy of compiler-gcc6.h from compiler-gcc5.h.

Thanks,
Martin