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Date: Tue, 05 Jun 2012 10:17:18 +0200
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai] ftrace
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To: dietmar.schindler@manroland.com
Cc: Xenomai@xenomai.org

On 06/05/2012 10:06 AM, dietmar.schindler@manroland.com wrote:
> A Xenomai-patched 2.6.34 kernel (ppc GNU/Linux) crashes when issuing the command
>
> echo function>/sys/kernel/debug/tracing/current_tracer
>
> (sometimes displaying NIP in a function from "source/kernel/trace/ring_buffer.c", sometimes with no message).
>
> Are Xenomai and ftrace incompatible?
>

No, but some ftrace bits have to be made pipeline-aware. The generic 
ones should be, but some powerpc-specific fix ups might be missing. I'm 
not using/testing ftrace routinely when upgrading patches. Also, 2.6.34 
is fairly old.

> --
> Best Regards,
> Dietmar
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-- 
Philippe.