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2024-05-30 - 12:22

Dates and Events:

OSADL Articles:

2023-11-12 12:00

Open Source License Obligations Checklists even better now

Import the checklists to other tools, create context diffs and merged lists


2023-03-01 12:00

Embedded Linux distributions

Results of the online "wish list"


2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached


2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available



Real Time Linux Workshops

1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015

Eleventh Real-Time Linux Workshop on September 28 to 30, in Dresden, Germany

Announcement - Hotels - Agenda - Paper Abstracts - Presentations - Registration - Abstract Submission - Xenomai User Meeting - Sponsors

Papers

ARM Fast Context Switch Extension for Linux

Richard Cochran, OMICRON electronics GmbH
Gilles Chanteperdrix, xenomai.org

The ARM v5 CPUs are inexpensive, low power, 32-bit processors widely used in embedded systems. Because of these processors' cache implementation, using memory protection on these systems incurs a performance penalty too large for many real time applications.  By implementing the Fast Context Switch Extension (FCSE), we achieved both memory protection and good cache performance under the Linux 2.6 kernel.  We briefly discuss the problem, explain the necessary changes to the Linux memory management system, and present performance measurements taken from artificial and real world applications.