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Wednesday, August 19 • 11:25am - 12:15pm
The RT patch - What Needs to Be Done to Get it Into Mainline - Steven Rostedt, Red Hat

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The Real Time patch (RT patch or PREEMPT_RT), has been maintained out of the Linux kernel tree since late 2004. It is the longest and largest patch set to be kept out of the tree and still widely used. A lot of the patch has made it into mainline (mutex code, priority inheritance futexes, ftrace, lockdep, hrtimers, generic interrupts, threaded irqs, Real Time scheduler, etc). The RT patch had so much influence on mainline, that new code for Real Time can now be directly added to mainline (for example: NO_HZ_FULL and the DEADLINE scheduler), but there is still a lot more that needs to go into mainline to make it a true RTOS. This talk will explain what those features are and what is holding it up from getting in. Some of it is technical and some of it is political. Both of these types of issues will be discussed.

Speakers
avatar for Steven Rostedt

Steven Rostedt

Principal Software Engineer, Red Hat Inc
Steven Rostedt works for Red Hat and is the main developer for their Real Time kernel. Steven is the maintainer of the Real-Time stable releases. He works upstream mainly developing and maintaining ftrace (the official tracer of the Linux kernel). He also maintains trace-cmd and kernelshark which are user space interfaces into ftrace. | | http://rostedt.homelinux.com/ 


Wednesday August 19, 2015 11:25am - 12:15pm
Willow B