From: Philippe Gerum <rpm@xenomai.org>
To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: Rép. : Re: [Xenomai-help] Switch mode with x86
Date: Tue, 05 Dec 2006 23:18:22 +0100 [thread overview]
Message-ID: <1165357102.7218.16.camel@domain.hid> (raw)
In-Reply-To: <45748DE3.9030300@domain.hid>
On Mon, 2006-12-04 at 22:06 +0100, Jan Kiszka wrote:
> Jan Kiszka wrote:
> > ...
> > This indicates that we face an I-pipe bug: the scheduled Linux call on
> > relaxation of TASK2 and then later TASK1 somehow gets lost (there is no
> > rthal_apc_handler in the remaining trace).
>
> I think I got it. No I-pipe bug, but one in the HAL.
>
> What happened? A weird race caused by the unprotected optimisation to
> only call rthal_schedule_irq() if there is no APC pending yet. This is
> the constellation I finally worked out via instrumenting and tracing:
>
Btw, really nice spot. This one was really bad to the bone. Thanks.
--
Philippe.
next prev parent reply other threads:[~2006-12-05 22:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-29 12:19 Rép. : Re: [Xenomai-help] Switch mode with x86 Nicolas BLANCHARD
2006-12-03 19:32 ` Jan Kiszka
2006-12-03 19:59 ` Philippe Gerum
2006-12-03 20:10 ` Jan Kiszka
2006-12-03 21:09 ` Jan Kiszka
2006-12-03 23:30 ` Philippe Gerum
2006-12-04 8:13 ` Jan Kiszka
2006-12-04 21:06 ` Jan Kiszka
2006-12-05 22:17 ` Philippe Gerum
2006-12-06 8:37 ` Jan Kiszka
2006-12-06 9:06 ` Philippe Gerum
2006-12-05 22:18 ` Philippe Gerum [this message]
2006-12-04 9:46 ` Gilles Chanteperdrix
2006-12-03 21:02 ` Philippe Gerum
[not found] <s575af89.064@domain.hid>
2006-12-05 17:15 ` Jan Kiszka
-- strict thread matches above, loose matches on Subject: below --
2006-12-05 12:33 Nicolas BLANCHARD
[not found] <s56d88c0.000@domain.hid>
2006-11-29 13:52 ` Jan Kiszka
2006-11-29 10:25 Nicolas BLANCHARD
[not found] <s56c97a4.096@domain.hid>
2006-11-28 20:27 ` Jan Kiszka
2006-11-28 19:09 Nicolas BLANCHARD
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