Linux Device Drivers Development

Module information

Even without having to read its code, you should be able to gather some information (for example, the author(s), parameter(s) description, license) about a given module. A kernel module uses its .modinfo section to store information about the module. Any MODULE_* macro will update the content of that section with the values passed as parameters. Some of these macros are MODULE_DESCRIPTION(), MODULE_AUTHOR(), and MODULE_LICENSE(). The real underlying macro provided by the kernel to add an entry in the module info section is MODULE_INFO(tag, info), which adds generic info in the form tag = info. This means a driver author could add any free form info he/she wants, such as the following:

MODULE_INFO(my_field_name, "What easy ...