Often, data items of a particular size are required by the kernel code to match predefined binary structures, to hold peripheral's register data, to communicate with userspace or to simply to align data within structures by inserting padding fields.
Sometimes, kernel code requires data items of a specific size, perhaps to match predefined binary structures, to communicate with userspace, to hold peripheral's register data, or simply to align data within structures by inserting padding fields.
In this section, we're going to see some special data types that can be used by kernel developers to simplify their everyday job. In the following, we're going to see an example with fixed-size data types, which are very useful to define some kind of data that is intended to match exactly the structure of data expected by a device or by a communication...
