Hydev

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# GNU/Linux with RT

## Overview

## Steps

Create a “workspace”, where you have some free disk space

  mkdir ~/rt_kern
  cd ~/rt_kern

Get the files !

  wget -c https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.14.25.tar.xz
  wget -c https://www.kernel.org/pub/linux/kernel/projects/rt/3.14/patch-3.14.25-rt22.patch.xz

Extract and patch

  tar xaf linux-3.14.25.tar.xz
  unxz patch-3.14.25-rt22.patch.xz
  cd ./linux-3.14.25
  patch -p1 < ../patch-3.14.25-rt22.patch

Now comes the _fun_ part: Configuring the Kernel That's usually the part where you screw up and build a non-working kernel.

  make menuconfig

Note: I missed some libraries so be able to run this command, you probably do too.

 sudo aptitude install libncurses5-dev

Once you get the configuration GUI, you have to select a few options:

* Enable the full RT features: `Processor type and features > Preemption Model > (Fully Preemptible Kernel (RT))`

Save and quit (TAB until you can select the option)

Build (where X is two times the number of cores of your CPU)

  make -jX

## The Debian way

## Links

* https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO