Notes On "Linux Kernel Development"

This is the third installment in a series of posts where I share notes taken while reading an interesting book or article. This post includes the notes made while reading the book titled “Linux Kernel Development” by Robert Love. Getting Started The following are key differences between userspace application development and Linux kernel development: No access to the C library or C headers. There are versions of certain libc functions included in the kernel under lib/....

April 4, 2024 · 31 min · Ivan Eduardo Guerra

Notes On "Linux Driver Development for Embedded Processors"

This is the second installment in a series of posts where I share notes taken while reading an interesting book or article. This post includes the notes made while reading “Linux Driver Development for Embedded Processors” by Alberto Liberal de los Rios. Notes weren’t taken for every chapter so keep in mind that the book actually covers more topics than what’s shown here. If you are considering buying the book, you might want to checkout this review1 before buying....

February 15, 2024 · 8 min · Ivan Eduardo Guerra

Notes On "What Every Programmer Should Know About Memory"

This is the first installment in a series of posts where I share notes taken while reading an interesting book or article. This post includes the notes made while reading a series of articles by Ulrich Drepper titled “What Every Programmer Should Know About Memory”. Part 1: Introduction There are a number of different computer architectures each with their own tradeoffs. The commodity HW setup has the CPUs attached via a Frontside Bus (FSB) to a Northbridge and indirectly via the Northbridge to a Southbridge....

February 14, 2024 · 9 min · Ivan Eduardo Guerra

Real-time Linux App Development

If you’re an embedded systems programmer, you have likely touched on the topic of real-time operating systems (RTOS). There are plenty of commercial RTOSes available on the market: VxWorks, Integrity, DeOS, Helix, the list goes on. As a hobbyist, you may not have thousands of dollars to spend paying for commercial licenses. Real-time Linux can fill the void by providing a path to a soft real-time system. This post takes a tour through the advice given in John Ogness’s 2020 presentation: “A Checklist for Writing Linux Real-Time Applications”1....

April 27, 2023 · 17 min · Ivan Eduardo Guerra