Kernel Exported Symbols

The kernel (and modules it loads) may export symbols, to be used by loadable modules.

Symbols exporting is done using the 'EXPORT_SYMBOL' macro. Such symbols may be functions, global variables, etc.

The kernel maintains a list of symbols exported by loaded modules. It maintains a similar list for symbols exported by the kernel itself. The 'get_module_symbol' function may be used to locate such symbols.