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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
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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.
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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
Debug StoriesDebug Stories
Debug Story: Sleeping Function Called From Invalid Context in a Kernel Driver
A kernel debug story: how we root-caused a "sleeping function called from invalid context" BUG caused by kmalloc(GFP_KERNEL) under a spinlock, and…
RB Jun 24 · 8 min
TutorialsTutorials
Function Tracing with ftrace: A Hands-On Kernel Tutorial
A hands-on guide to function tracing with ftrace: mount tracefs, run the function and function_graph tracers, filter functions, and read timed call…
RB Jun 23 · 18 min
NewsNews
Kernel & Embedded News: Buildroot 2026.05; JetPack Yocto Support
Buildroot 2026.05 ships, Yocto Whinlatter reaches end of support and retires its Poky master branch, JetPack 7.2 adds official Yocto support for…
RB Jun 23 · 8 min
Deep DivesDeep Dives
Deferred Probe in the Linux Kernel: Why a Driver’s probe() Runs Late and How to Debug It
Deferred probe lets Linux drivers bind in any order by retrying devices whose dependencies are not ready. How the mechanism works in…
RB Jun 22 · 16 min
CareerCareer
AI Can Fetch the Answer. Only You Can Notice the Question.
A language model retrieves what is already known, but it cannot stand in your situation and notice what is actually being asked.…
RB Jun 21 · 5 min
CareerCareer
When Information Is Free, Attention Becomes the Scarce Skill
In 1971 Herbert Simon noted that a wealth of information creates a poverty of attention. In the AI age, when answers are…
RB Jun 20 · 5 min
NewsNews
Linux 7.1 and 7.2: Three Changes Embedded Teams Should Plan For
Linux 7.1 drops the i486 and breaks two networking config defaults, while 7.2 lands Cache-Aware Scheduling and a Clang 17 toolchain bump.…
RB Jun 20 · 8 min
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