Tech Articles
Curated developer articles, tutorials, and guides – auto-updated hourly
Raghu Bharadwaj2d ago • 8 min read
Writing a Minimal sched_ext Scheduler
How to write a minimal sched_ext scheduler: the four callbacks, the dispatch queue model, and how to...
#linux#kernel#bpf#embedded
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Muhammad Adil 1d ago • 3 min read
How Linux 7.3 Handles VRAM Starvation Without Slowing Down
Running out of video memory used to mean stuttering, hangs, or even a full system freeze. Linux 7.3....
#linux#graphics#performance#kernel
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A. Ababa6d ago • 5 min read
Fix: Linux PC Wakes Up Instantly After You Suspend It
The Problem You hit suspend. Screen goes black. A second later, it's back on, showing the...
#linux#opensource#amd#kernel
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Raghu Bharadwaj1d ago • 9 min read
Kernel & Embedded News: Linux 7.3 Merge Window; QEMU 11.1 Released
The Linux 7.3 merge window is open: an SMP rework cuts scheduling latency, BPF reaches binfmt_misc, ...
#linux#kernel#embedded#news
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Raghu Bharadwaj3d ago • 8 min read
The regmap Subsystem: One Register API Across I2C, SPI and MMIO
Build a Linux I2C driver with the regmap subsystem: regmap_config, probe, the register cache, suspen...
#linux#kernel#embedded#c
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Raghu Bharadwaj2d ago • 7 min read
Linux 7.2 Is Out: What Embedded Teams Should Test First
Linux 7.2 is out. What actually changes for embedded: cache-aware scheduling, SPI NAND randomizer, d...
#linux#kernel#embedded#iot
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Raghu Bharadwaj6d ago • 16 min read
Embedded Linux Boot Time — Part 2: Measuring the Kernel and User Space
A long initcall is usually a blocked initcall, and the log cannot tell you which. Read initcall_debu...
#linux#embedded#kernel#debugging
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Raghu Bharadwaj5d ago • 11 min read
How to Write a Kernel Bug Report Maintainers Act On
A kernel bug report that maintainers act on has a specific shape. How to pick the right kernel, chec...
#linux#kernel#opensource#career
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Raghu Bharadwaj20h ago • 7 min read
The Mainline NPU Driver on RK3588, and What It Cannot Do Yet
The mainline NPU driver for RK3588 is real, in drivers/accel since Linux 6.18. What it does, what it...
#linux#embedded#kernel#ai
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Umesh Malik3d ago • 11 min read
Fix EEVDF latency regressions with sched_ext: Meta's 28% p99 win
Your p99 got worse after a kernel upgrade and nothing else changed? That is an EEVDF latency regress...
#linux#performance#kernel#taillatency
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