Understanding PREEMPT_RT (The Real-Time Patch) - Steven Rostedt, Red Hat
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]
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... Read More →
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