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The Embedded Linux Conference (ELC) is the premier vendor-neutral technical conference for companies and developers using Linux in embedded products. This conference, now in its 9th year, has the largest collection of sessions dedicated exclusively to embedded Linux and embedded Linux developers. ELC is embedded Linux experts talking about solutions to your embedded Linux problems. ELC consists of 3 days of presentations, tutorials and Bird-of-a-Feather sessions. There are over 50 sessions to choose from, on a wide variety of topics.

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Wednesday, February 20 • 2:00pm - 2:50pm
Understanding PREEMPT_RT (The Real-Time Patch) - Steven Rostedt, Red Hat

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The real-time patch (which provides CONFIG_PREEMPT_RT), has been around since 2005. Started by Ingo Molnar and maintained by Thomas Gleixner and several others, it has grown from a hobby RTOS into a very serious contender. Several distributions (Red Hat, SuSE, Debian, Ubuntu) supply a kernel version that includes this patch. The embedded world has started adding the -rt patch to their own devices that they ship. But do the embedded developers understand what the -rt patch supplies? Programming for real time, and especially when writing kernel code requires special knowledge to avoid real time traps. This talk will explain what the real time patch provides and special programming tips that will ensure embedded developers will get the best from their devices.

[I gave this in ELC-EU, it was extremely popular, I decided to give it for North America with updates as well]
Speakers
avatar for Steven Rostedt

Steven Rostedt

Real Time Kernel, Red Hat
Steven Rostedt has worked for Red Hat over the last 8 years. His primary duty is working on the Real Time Kernel. But since that requires the full analysis of the kernel internals, he developed ftrace (the official Linux tracer) to facilitate the examination of what is happening. Ftrace is now used by most kernel developers outside the Real Time work. Steven is now the maintainer of ftrace and that has consumed most of his time away from working on the RT kernel, although he still maintains...
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