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Date: Fri, 23 Sep 2011 10:43:51 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] P2020 support for ftrace with ipipe 2.12-01 and
 xeno	2.5.5.1
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To: Jean-Michel Hautbois <jhautbois@domain.hid>
Cc: Xenomai-core@domain.hid

On 09/23/2011 09:58 AM, Jean-Michel Hautbois wrote:
> Hi List,
> 
> I am trying to use ftrace on a P2020 board, using the following :
> - Linux 2.6.35-11
> - Xenomai 2.5.5.1 (or 2.5.6, same problem)
> - ipipe 2.12-01
> 
> I launch it using :
> $> mkdir /tmp/debug
> $> mount -t debugfs nodev /tmp/debug
> $> cd /tmp/debug/tracing
> $> echo function_graph > current_tracer
> 
> The last one fails (it hangs the CPU, I cannot do anything than hard reset).
> Do you know what could cause that ?
> As I can't have any trace, I don't really know how to go further, and before
> using a BDI I would like to know if it is a known issue, as I could not find
> anything related to this in the recent changes...
> 
> Thanks in advance for your help,
> Regards,
> JM

Does the I-pipe tracer work?
See:
http://www.xenomai.org/index.php/I-pipe:Tracer


-- 
					    Gilles.