This will be used later by the linker-table userspace sandbox. Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx> --- tools/include/linux/export.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/include/linux/export.h b/tools/include/linux/export.h index d07e586b9ba0..cb7d6b490e08 100644 --- a/tools/include/linux/export.h +++ b/tools/include/linux/export.h @@ -1,6 +1,28 @@ #ifndef _TOOLS_LINUX_EXPORT_H_ #define _TOOLS_LINUX_EXPORT_H_ +/* + * Export symbols from the kernel to modules. Forked from module.h + * to reduce the amount of pointless cruft we feed to gcc when only + * exporting a simple symbol or two. + * + * Try not to add #includes here. It slows compilation and makes kernel + * hackers place grumpy comments in header files. + */ + +/* Some toolchains use a `_' prefix for all user symbols. */ +#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX +#define __VMLINUX_SYMBOL(x) _##x +#define __VMLINUX_SYMBOL_STR(x) "_" #x +#else +#define __VMLINUX_SYMBOL(x) x +#define __VMLINUX_SYMBOL_STR(x) #x +#endif + +/* Indirect, so macros are expanded before pasting. */ +#define VMLINUX_SYMBOL(x) __VMLINUX_SYMBOL(x) +#define VMLINUX_SYMBOL_STR(x) __VMLINUX_SYMBOL_STR(x) + #define EXPORT_SYMBOL(sym) #define EXPORT_SYMBOL_GPL(sym) #define EXPORT_SYMBOL_GPL_FUTURE(sym) -- 2.11.0
