TutorialsTutorials
Control GPIO with libgpiod: Tools and the API
Control GPIO with libgpiod using the version 2 tools and C API. Hands-on examples with gpioget, gpioset, gpiomon, and a virtual gpio-mockup…
RB Jun 30 · 12 min
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Field notes from the Linux trenches
Deep dives, debugging war-stories and career guidance for engineers who work where the kernel meets real hardware.
Tutorials
NewsNews
Kernel & Embedded News: EU CRA Reporting Nears; RVA23 Baseline Set
A practitioner digest for embedded Linux teams: the EU Cyber Resilience Act's reporting duties starting 11 September 2026, RISC-V consolidating its ratified…
RB Jun 30 · 7 min
CareerCareer
Your Tech Career After College: Inside the Domains
A practical look at six durable tech domains for graduates after college: the entry skills, first tools, and one starter project for…
RB Jun 29 · 8 min
Debug StoriesDebug Stories
Debug Story: A Hung Task That Froze an Embedded Board
A debug story from an embedded Linux board: a hung task froze the system. How khungtaskd reports it, reading the blocked-task stack,…
RB Jun 29 · 10 min
CareerCareer
More Information Has Never Automatically Meant More Wisdom
T. S. Eliot asked where the wisdom we lost in knowledge has gone. In the AI age, when information is free, the…
RB Jun 28 · 5 min
NewsNews
Kernel & Embedded News: Yocto 6.0 LTS; AI Patches Strain Review
A practitioner digest of the Linux 7.1/7.2 cycle and the new Yocto 6.0 Wrynose LTS for embedded teams: broader SoC support, exFAT…
RB Jun 28 · 9 min
TutorialsTutorials
Real-Time Linux with PREEMPT_RT — Part 2: Building a PREEMPT_RT Kernel and Comparing Latency
Build a PREEMPT_RT kernel from mainline 6.12 source, boot it, and re-run cyclictest to compare real-time latency against a standard kernel baseline.
RB Jun 28 · 9 min
CareerCareer
Your Tech Career After College: Useful From Day One
The fresher bar has moved from trainable to useful from day one. What that means now, how it differs across durable tech…
RB Jun 27 · 9 min
NewsNews
Kernel & Embedded News: strncpy Removed; Post-Quantum IMA/EVM
Linux 7.2 removes the strncpy API after six years of work, reorganises the sched_ext source tree, and adds post-quantum ML-DSA signatures to…
RB Jun 27 · 8 min
Deep DivesDeep Dives
Coherent vs Streaming DMA: A Deep Dive into the Linux DMA Mapping API
A practical Deep Dive into the Linux DMA mapping API: coherent vs streaming mappings, DMA directions, cache coherency, and the rules that…
RB Jun 27 · 21 min
CareerCareer
How to Get Your First Linux Kernel Patch Accepted
A step-by-step guide to getting your first Linux kernel patch accepted: choosing a change, writing the commit, checkpatch, get_maintainer, git send-email, and…
RB Jun 26 · 9 min
CareerCareer
Your Tech Career After College: Where to Begin
Entry-level engineering jobs in tech have shifted over the last few years, not vanished. What changed, and the durable domains worth investing…
RB Jun 25 · 9 min
InsightsInsights
Rust in the Linux Kernel: What It Means for Embedded Engineers
Rust in the Linux kernel is now official, not experimental. An evidence-based look at what changed and what embedded engineers should actually…
RB Jun 25 · 7 min
CareerCareer
We Have Every Fact at Our Fingertips, and Still Freeze in Front of a Real Problem
Research on the "Google effect" shows that when we expect information to stay available, we remember where to find it instead of…
RB Jun 24 · 5 min
NewsNews
Kernel & Embedded News: Cache-Aware Scheduling; Qualcomm Upstream
This edition covers four developments that reduce long-term maintenance work: cache-aware scheduling in Linux 7.2, Qualcomm's upstream-first Dragonwing BSP, the proposed removal…
RB Jun 24 · 8 min
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