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Date: Thu, 13 Apr 2006 15:48:51 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] latency -t 1 crashes on SMP.
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org

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Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>  > o instrument the xenomai exception handler with an ipipe_trace_freez=
e()
>  >   (something which should be merged into SVN later)
>=20
> The I-pipe tracer as well as Linux NMI handling have the same issue
> which is the cause for the exceptions 14: they rely on a correct
> "current" to read the processor id. The first attached patch, to be
> applied after the ipipe patch, add an ipipe_processor_id_notrace
> function, which is called instead of raw_smp_processor_id() in the
> second, I-pipe tracer, attached patch.
>=20

Ah, good point! But why not make the original __ipipe_*_cpuid functions
non-traced? I don't think we would loose significant information.

Jan


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