Linux Kernel Internals ISBN 0-201-87741-4 Addison Wesley Longman 1996 Beck,Boehme,Dziadzka(!),Kunitz,Magnus,Verworner $45 at Borders
A guide to the kernel code, indispensible to someone like me, who has to make hardware work with Linux, but is unfamiliar with OS details outside of windows/dos. Supprisingly easy to read given the subject matter. This book talks you through the timer and scheduler code and fast and slow H/W interrrupt handlers for instance, so I can see what things like get/setitimer will do for me. Based on 1.2.13 and 1.3.x.