Conventions

Throughout this book, you will see listings of the source code. The top-right corner will hold the location of the source file with respect to the root of the source code tree. The listings are shown in this font. Line numbers are provided for the code commentary that usually follows. As we explain the kernel subsystem and how it works, we will continually refer to the source code and explain it.

Command-line options, function names, function output, and variable names are distinguished by this font.

Bold type is used whenever a new concept is introduced.