Linux Kernel Programming Part 2 – Char Device Drivers and Kernel Synchronization: Create user-kernel interfaces,work with peripheral I/O,and handle hardware interrupts
by: Kaiwan N Billimoria
Publisher finelybook 出版社: Packt Publishing (19 Mar. 2021)
Language 语言: English
Print Length 页数: 452 pages
ISBN-10: 180107951X
ISBN-13: 9781801079518
Book Description
Discover how to write high-quality character driver code,interface with userspace,work with chip memory,and gain an in-depth understanding of working with hardware interrupts and kernel synchronization
Linux Kernel Programming Part 2 – Char Device Drivers and Kernel Synchronization is an ideal companion guide to the Linux Kernel Programming book. This book provides a comprehensive introduction for those new to Linux device driver development and will have you up and running with writing misc class character device driver code (on the 5.4 LTS Linux kernel) in next to no time.
You’ll begin by: learning how to write a simple and complete misc class character driver before interfacing your driver with user-mode processes via procfs,sysfs,debugfs,netlink sockets,and ioctl. You’ll then find out how to work with hardware I/O memory. The book covers working with hardware interrupts in depth and helps you understand interrupt request (IRQ) allocation,threaded IRQ handlers,tasklets,and softirqs. You’ll also explore the practical usage of useful kernel mechanisms,setting up delays,timers,kernel threads,and workqueues. Finally,you’ll discover how to deal with the complexity of kernel synchronization with locking technologies (mutexes,spinlocks,and atomic/refcount operators),including more advanced topics such as cache effects,a primer on lock-free techniques,deadlock avoidance (with lockdep),and kernel lock debugging techniques.
By the end of this Linux kernel book,you’ll have learned the fundamentals of writing Linux character device driver code for real-world projects and products.
What You Will Learn:
Get to grips with the basics of the modern Linux Device Model (LDM)
Write a simple yet complete misc class character device driver
Perform user-kernel interfacing using popular methods
Understand and handle hardware interrupts confidently
Perform I/O on peripheral hardware chip memory
Explore kernel APIs to work with delays,timers,kthreads,and workqueues
Understand kernel concurrency issues
Work with key kernel synchronization primitives and discover how to detect and avoid deadlock
