EDN

Embedded Operating Systems – Part 5: Linux memory management and kernel memory

Linux processes are made up of text, data, and BSS static segments; in addition, each process has its own stack (which is created with the fork system call). Heap space for Linux tasks are allocated ...
EDN

Embedded Operating Systems – Part 4: Memory management

Editor's Note: Embedded Systems Architecture, 2nd Edition, is a practical and technical guide to understanding the components that make up an embedded system’s architecture. Offering detailed ...
Linux Journal

Kernel Korner - AEM: a Scalable and Native Event Mechanism for Linux

In a previous article [“An Event Mechanism for Linux”, LJ, July 2003], we introduced the necessity for Linux to adopt a native and generic event mechanism in the context of telecom. Many existing ...
Linux Journal

Anatomy of a Read and Write Call

A few years ago I was tasked with making the Spec96 benchmark suite produce the fastest numbers possible using the Solaris Intel operating system and Compaq Proliant servers. We were given all the ...
Embedded

Device drivers in user space

Here are the benefits and some caveats to running data-path applications in the user space. Discussed is Linux's UIO framework. Traditionally, packet-processing or data-path applications in Linux have ...