Raghu Bharadwaj - Mastering Linux Kernel Development

BIRMINGHAM - MUMBAI

Copyright 2017 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published : October 2017

Production reference: 1091017

ISBN 978-1-78588-305-7

www.packtpub.com

Raghu Bharadwaj is a leading consultant, contributor, and corporate trainer on the Linux kernel with experience spanning close to two decades. He is an ardent kernel enthusiast and expert, and has been closely following the Linux kernel since the late 90s. He is the founder of TECH VEDA, which specializes in engineering and skilling services on the Linux kernel, through technical support, kernel contributions, and advanced training. His precise understanding and articulation of the kernel has been a hallmark, and his penchant for software designs and OS architectures has garnered him special mention from his clients. Raghu is also an expert in delivering solution-oriented, customized training programs for engineering teams working on the Linux kernel, Linux drivers, and Embedded Linux. Some of his clients include major technology companies such as Xilinx, GE, Canon, Fujitsu, UTC, TCS, Broadcom, Sasken, Qualcomm, Cognizant, STMicroelectronics, Stryker, and Lattice Semiconductors.

Rami Rosen is the author of Linux Kernel Networking Implementation and Theory , a book published by Apress in 2013. Rami has worked for more than 20 years in high-tech companiesstarting his way in three startups. Most of his work (past and present) is around kernel and userspace networking and virtualization projects, ranging from device drivers and kernel network stack and DPDK to NFV and OpenStack. Occasionally, he gives talks in international conferences and writes articles for LWN.netthe Linux Journal, and more.

For support files and downloads related to your book, please visit www.PacktPub.com .

Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at www.PacktPub.com , and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at service@packtpub.com for more details.

At www.PacktPub.com , you can also read a collection of free technical articles, sign up for a range of free newsletters and receive exclusive discounts and offers on Packt books and eBooks.

https://www.packtpub.com/mapt

Get the most in-demand software skills with Mapt. Mapt gives you full access to all Packt books and video courses, as well as industry-leading tools to help you plan your personal development and advance your career.

• Fully searchable across every book published by Packt
• Copy and paste, print, and bookmark content
• On demand and accessible via a web browser

Thanks for purchasing this Packt book. At Packt, quality is at the heart of our editorial process. To help us improve, please leave us an honest review on this book's Amazon page at https://www.amazon.com/dp/1785883054.

If you'd like to join our team of regular reviewers, you can email us at customerreviews@packtpub.com. We award our regular reviewers with free eBooks and videos in exchange for their valuable feedback. Help us be relentless in improving our products!

Mastering Linux Kernel Development looks at the Linux kernel, its internal
arrangement and design, and various core subsystems, helping you to gain
significant understanding of this open source marvel. You will look at how the Linux kernel, which possesses a kind of collective intelligence thanks to its scores of contributors, remains so elegant owing to its great design.
This book also looks at all the key kernel code, core data structures, functions, and macros, giving you a comprehensive foundation of the implementation details of the kernels core services and mechanisms. You will also look at the Linux kernel as well-designed software, which gives us insights into software design in general that are easily scalable yet fundamentally strong and safe.

, looks closely at one of the principal abstractions of Linux called the process and the whole ecosystem, which facilitate this abstraction. We will also spend time in understanding address space, process creation, and threads.

, Deciphering the Process Scheduler, explains process scheduling, which is a vital aspect of any operating system. Here we will build our understanding of the different scheduling policies engaged by Linux to deliver effective process execution.