Re: [Xenomai-help] Setup LTTng with Xenomai

[Jan Kiszka <jan.kiszka@domain.hid>]

Steve wrote:
> Hi,
> 
> I've been looking into using LTTng with Xenomai and each time I try to
> find more information I find a different post with new links to
> various patches and websites.  The most recently dated information
> that I have found is 24th Feb 2009:
> 
> https://mail.gna.org/public/adeos-main/2009-02/msg00031.html
> 
> Is this the latest info, and is 'git.kiszka.org' the best source for
> LTTng - Adeos combinations?

For x86? Yes, for sure. :)

Just note that I haven't updated my lttng tree with latest ipipe fixes
for 2.6.29 yet. So I would recommend to merge/cherry-pick the changes
found in queues/2.6.29-noarch and queues/2.6.29-x86 into your lttng clone.

> 
> Also, I have tried to apply the Xenomai patch given by the link in the
> above post, the one at:
> 
> http://permalink.gmane.org/gmane.linux.real-time.xenomai.devel/6009
> 
> However, this does not work on my copy of Xenomai (2.4.8) - which
> version of Xenomai was the patch designed for, and is there a more
> recent patch for 2.4.8 (or am I doing something wrong)?

That patch was written against the 2.5 development tree. You likely have
to resolve the conflicts manually and furthermore fix remaining
trace_mark invocations that changed between 2.4 and 2.5.

> 
> Finally, once I have the linux kernel tree with lttng and adeos (from
> kiszka.org), and the patched Xenomai (using the patch from gmane.org),
> I assume that I then prepare the kernel using Xenomai in the normal
> fashion (omitting the adeos patch because it is already applied), and

Yep.

> then I can configure and compile the kernel as normal.  Is this
> correct?

Yep. Just additionally enabled the LTTng support in the kernel config.

> 
> Thanks in advance for any help that you can give,
> 
> Steve

Jan

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