From: Philippe Gerum <rpm@xenomai.org>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Jan Kiszka <jan.kiszka@domain.hid>, xenomai@xenomai.org
Subject: Re: [Xenomai-core] [RFC] Getting rid of the NMI latency watchdog
Date: Wed, 22 Jun 2011 22:47:45 +0200 [thread overview]
Message-ID: <1308775665.2159.98.camel@domain.hid> (raw)
In-Reply-To: <4E022367.7020200@domain.hid>
On Wed, 2011-06-22 at 19:16 +0200, Gilles Chanteperdrix wrote:
> On 05/19/2011 10:29 PM, Philippe Gerum wrote:
> > On Thu, 2011-05-19 at 20:36 +0200, Jan Kiszka wrote:
> >> On 2011-05-19 20:15, Gilles Chanteperdrix wrote:
> >>> On 05/19/2011 03:58 PM, Philippe Gerum wrote:
> >>>> For this reason, I'm considering issuing a patch for a complete removal
> >>>> of the NMI latency watchdog code in Xenomai 2.6.x, disabling the feature
> >>>> for 2.6.38 kernels and above in 2.5.x.
> >>>>
> >>>> Comments welcome.
> >>>
> >>> I am in the same case as you: I no longer use Xeno's NMI watchdog, so I
> >>> agree to get rid of it.
> >>
> >> Yeah. The last time we wanted to use it get more information about a
> >> hard hang, the CPU we used was not supported.
> >>
> >> Philippe, did you test the Linux watchdog already, if it generate proper
> >> results on artificial Xenomai lockups on a single core?
> >
> > This works provided we tell the pipeline to enter printk-sync mode when
> > the watchdog kicks. So I'd say that we could probably do a better job in
> > making the pipeline core smarter wrt NMI watchdog context handling than
> > asking Xenomai to dup the mainline code for having its own NMI handling.
>
> If nobody disagrees, I am removing this code from -head. Now.
>
Ack.
--
Philippe.
prev parent reply other threads:[~2011-06-22 20:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-19 13:58 [Xenomai-core] [RFC] Getting rid of the NMI latency watchdog Philippe Gerum
2011-05-19 18:15 ` Gilles Chanteperdrix
2011-05-19 18:36 ` Jan Kiszka
2011-05-19 20:29 ` Philippe Gerum
2011-06-22 17:16 ` Gilles Chanteperdrix
2011-06-22 20:47 ` Philippe Gerum [this message]
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