Linux Kernel Core

The heart of the catalog. Process management, memory, and concurrency, read at the source level rather than described from a distance. Every other track assumes some of this.

12 courses · available in all eight cities and live online

Getting oriented3 courses

KRN-1013 days Kernel Architecture & Source Navigation A guided tour of the kernel tree: how it is organised, how subsystems relate, and how to find the code you need. Foundation Practitioner-taught SAR 6,750Next 18 Oct KRN-1022 days Building & Configuring the Kernel Configure, build, install and boot a kernel you compiled yourself, and understand what the thousands of config options actually do. Foundation Practitioner-taught SAR 4,500Next 18 Oct KRN-1103 days Modules & the Kernel Build System Kbuild, module loading, symbol resolution and the module lifecycle from insmod to rmmod. Foundation Practitioner-taught SAR 6,750Next 15 Nov

Process & scheduling3 courses

KRN-2014 days Process Lifecycle & Scheduling How processes are created, scheduled and destroyed, and how scheduling decisions show up as latency in your application. Practitioner Practitioner-taught SAR 10,500Next 8 Nov KRN-2103 days CFS to EEVDF Internals The fair scheduler in depth, the move to EEVDF, and what changed for latency-sensitive workloads. Advanced Practitioner-taught SAR 9,000Next 18 Oct KRN-2112 days CPU Isolation & Affinity Taking CPUs away from the kernel for latency-critical work: isolcpus, nohz_full, RCU offload and the gotchas. Advanced Practitioner-taught SAR 6,000Next 25 Oct

Memory management3 courses

KRN-2204 days Virtual Memory & Page Tables Address spaces, page tables, faults and mappings — the machinery behind every memory access your program makes. Practitioner Practitioner-taught SAR 10,500Next 22 Nov KRN-2213 days Allocators: Buddy, Slab, vmalloc How the kernel allocates memory at every scale, and how allocator behaviour surfaces as fragmentation and latency. Advanced Practitioner-taught SAR 9,000Next 22 Nov KRN-2223 days Memory Pressure, OOM & cgroup v2 What happens when memory runs out: reclaim, swap, the OOM killer, and cgroup v2 limits that throttle silently. Advanced Practitioner-taught SAR 9,000Next 22 Nov

Concurrency3 courses

KRN-2303 days Kernel Locking Primitives Every locking primitive the kernel offers, when each is correct, and the deadlocks that follow from choosing wrong. Practitioner Practitioner-taught SAR 7,880Next 8 Nov KRN-2313 days RCU in Depth Read-copy-update from first principles: grace periods, publish-subscribe, and why RCU is everywhere in the kernel. Advanced Practitioner-taught SAR 9,000Next 8 Nov KRN-2323 days Memory Barriers & the Kernel Memory Model The hardest correctness topic in the kernel: reordering, barriers, and reasoning about concurrent code that actually holds. Expert Practitioner-taught SAR 10,120Next 8 Nov