Rating: 

When you are ready to build your own linux kernel this is a great book to read! Greg achieves his goal of providing lots of kernel building information in one easily useable source. He explains without being wordy and lets you learn from his ample experience. Chapters 1-6 deal with getting and building a vanilla kernel and should take you about an hour to read. Chapter 7 is neat because it shows how to isolate exactly what hardware you need to build for to optimize a running system. Chapters 9-11 cover half the book in reference format; boot parameters, build parameters, and configuration options.

If you are a kernel hacker the material is a bit light. However, if you have never built a kernel before you will save hours by this one read. I particularly like the reference style because I can study as much as my brain can absorb, make notes, and come back when I have a question.