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OSADL Project: "Latest stable" RT-Preempt realtime Linux kernel
OSADL recommends the RT-Preempt realtime Linux kernel 2.6.33.7.2-rt30 as latest stable version (Released on December 21, 2010)
Kernel
www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.33.7.tar.bz2
RT-Preempt Patch
www.kernel.org/pub/linux/kernel/projects/rt/older/patch-2.6.33.7.2-rt30.bz2
These references are also intended to form the basis of an OSADL maintained kernel to be used in the Safety Critical Linux project.
Instructions
Short installation instruction
A quick list of the commands needed to download, patch and build an RT-Preempt realtime Linux kernel is given here.
HOWTO
How to enable realtime capabilities of the mainline kernel including hints how to check the realtime capabilities of the newly compiled kernel is further explained here.
Earlier versions
For a limited time, the last but one "Latest Stable" release of the RT-PREEMPT patches is still maintained, and important fixes may be backported to it, if necessary.
Kernel
www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.12.tar.bz2
RT-Preempt Patch
www.kernel.org/pub/linux/kernel/projects/rt/older/patch-2.6.31.12-rt21.bz2