Linux Kernel Programming Essentials: Learn to Build, Debug, and Optimize Kernel Modules and Device Drivers for Professional Linux Development

Build robust, high-performance drivers for hardware devices and ensure seamless integration with production Linux systemsLinux kernel driver development requires understanding both hardware interfaces and kernel subsystem architecture. This comprehensive guide takes you through the complete driver development lifecycle, from initial hardware communication to production deployment and maintenance.You'll start by understanding kernel module basics and the driver model, then progress to building character devices with proper file operations and ioctl interfaces. The book covers block device drivers and I/O scheduling, network device drivers with NAPI integration, and USB and PCI device enumeration. You'll learn to manage DMA transfers, handle cache coherency, and implement efficient interrupt handling with deferred work.As you advance, you'll explore critical topics like kernel synchronization using spinlocks, mutexes, and RCU, along with power management for runtime PM and system suspend/resume. The book demonstrates debugging with printk, ftrace, kgdb, and performance profiling with perf. Security chapters cover input validation, capability systems, and preventing common vulnerabilities.Key FeaturesDevelop character, block, and network device drivers with detailed code examples and architectural explanationsMaster DMA operations, interrupt handling, power management, and kernel synchronization primitivesDeploy drivers to production with DKMS packaging, monitoring infrastructure, and kernel community patch submissionWhat you will learnBuild character, block, and network device drivers following kernel best practicesImplement DMA transfers with proper cache coherency and scatter-gather supportHandle interrupts efficiently using top-half/bottom-half processing and NAPIApply kernel synchronization primitives to prevent race conditions and deadlocksDebug kernel code using ftrace, kgdb, perf, and KASAN memory sanitizersImplement power management with runtime PM and system suspend/resume callbacksPackage drivers with DKMS and create distribution packages for Debian/Ubuntu/RHELSubmit patches to the Linux kernel following community coding standardsWho this book is forThis book is for systems programmers with C programming experience who want to develop Linux kernel drivers. Embedded systems engineers working with custom hardware, driver developers supporting new devices, and performance engineers optimizing I/O subsystems will find this guide valuable. Familiarity with basic Linux system administration and understanding of computer architecture concepts like memory management and interrupts is expected. No prior kernel development experience is required. Read more