diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compiler.h | 16 | ||||
| -rw-r--r-- | include/linux/module.h | 4 |
2 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index ed772311ec1f..5508011cc0c7 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -52,6 +52,22 @@ extern void __chk_io_ptr(const volatile void __iomem *); #ifdef __KERNEL__ +/* + * Minimal backport of compiler_attributes.h to add support for __copy + * to v4.9.y so that we can use it in init/exit_module to avoid + * -Werror=missing-attributes errors on GCC 9. + */ +#ifndef __has_attribute +# define __has_attribute(x) __GCC4_has_attribute_##x +# define __GCC4_has_attribute___copy__ 0 +#endif + +#if __has_attribute(__copy__) +# define __copy(symbol) __attribute__((__copy__(symbol))) +#else +# define __copy(symbol) +#endif + #ifdef __GNUC__ #include <linux/compiler-gcc.h> #endif diff --git a/include/linux/module.h b/include/linux/module.h index dfe5c2e25ba1..d237d0574179 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -127,13 +127,13 @@ extern void cleanup_module(void); #define module_init(initfn) \ static inline initcall_t __maybe_unused __inittest(void) \ { return initfn; } \ - int init_module(void) __attribute__((alias(#initfn))); + int init_module(void) __copy(initfn) __attribute__((alias(#initfn))); /* This is only required if you want to be unloadable. */ #define module_exit(exitfn) \ static inline exitcall_t __maybe_unused __exittest(void) \ { return exitfn; } \ - void cleanup_module(void) __attribute__((alias(#exitfn))); + void cleanup_module(void) __copy(exitfn) __attribute__((alias(#exitfn))); #endif |