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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]

avatar for Steven Rostedt

Steven Rostedt

Principal Software Engineer, Red Hat
Steven Rostedt currently works for Red Hat on their Real Time team. He's the maintainer of the stable releases for the Real Time patch (PREEMPT_RT). He is also one of the original developers for the Real Time patch. Steven is the main developer and maintainer for ftrace, the official tracer of the Linux kernel, as well as the user space tools trace-cmd and kernelshark. He also develops ktest.pl (in the kernel) and make localmodconfig.

Attendees (32)

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