Overview

From the first line of code that touches page tables to the last atomic instruction guarding a lock-free queue, this definitive guide lifts the curtain on exactly how professional kernel developers write, debug, and harden C at the heart of every modern operating system. It condenses years of real-world expertise into a relentlessly practical reference packed with production-grade patterns, compiler wizardry, and concurrency strategies you can drop straight into your own low-level projects. What You'll Unlock Inside- High-Performance Memory Mastery - page allocator APIs, NUMA-aware placement, zero-copy buffers, and cache-line padding techniques that squeeze every cycle from today's multicore CPUs. - Rock-Solid Concurrency Toolkits - spinlocks, seqlocks, RCU, atomic operations, and preemption control woven into hands-on examples that stay fast and deadlock-free. - Cutting-Edge Optimization Secrets - branch prediction hints, static keys, jump labels, and compile-time assertions used by top-tier maintainers to ship code that never slows down. - Lock-Free & Wait-Free Algorithms - build ultra-scalable stacks, queues, and ring buffers with detailed, step-by-step reasoning about memory ordering and data-race safety. - Instrumentation & Observability - tracepoints, eBPF helpers, and live-patch-safe patterns that turn production kernels into live laboratories-without compromising performance. - Secure, Future-Proof Engineering - integer overflow guards, sanitizer annotations, and hot-patch-ready data access strategies that make your code resilient to both bugs and CVEs. Each of the 99 laser-focused chapters drills into a single cornerstone concept-just enough theory to ground you, then straight into listings, idioms, and battle-tested checklists that stick. Perfect For- Systems programmers advancing from user-space to kernel-space. - Embedded engineers chasing deterministic performance on constrained hardware. - Security researchers auditing close-to-metal C. - DevOps professionals exploring eBPF observability and live patching. - Computer science students seeking a career-ready jump start into operating-system internals. If you're comfortable in C and hungry for the power that lives beneath libc, this book hands you the keys.

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