Re: [Xenomai] patch the kernel?

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On 11/14/2013 01:31 PM, Grant wrote:
>>> Is patching the kernel necessary in order to use xenomai?
>>
>> It depends on which version of Xenomai you are talking about. If you are
>> talking about Xenomai stable version, then yes, you have to follow the
>> installation instructions here:
>> http://www.xenomai.org/documentation/xenomai-2.6/html/README.INSTALL/
>>
>> Which include running the "prepare-kernel.sh" patch, which modifies the
>> kernel.
>>
>> If you are talking about Xenomai current development version, a.k.a. Xenomai
>> forge, then it gives you the choice of running:
>> - on an unmodified kernel  (but you will not have real-time guarantees);
>> - a kernel patched with the PREEMPT_RT patch;
>> - a kernel modified as with the stable version.
>>
>> The current state of Xenomai forge is that it is stable enough on the x86
>> and ARM architectures to run a latency test under load.
> 
> Thanks I really need to try Xenomai forge.  I wish Gentoo had an
> ebuild but there is a bug for it:
> 
> https://bugs.gentoo.org/show_bug.cgi?id=438236

Well, building xenomai user-space support is easy enough to compile
without a packaging system. It is just a matter of untarring the sources
and running

./configure
make
sudo make install

The documentation gives details about the available options, but the
defaults should be just fine.

-- 
                                                                Gilles.