From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Philippe Gerum <rpm@xenomai.org>
Cc: Jan Kiszka <jan.kiszka@domain.hid>, xenomai-core <xenomai@xenomai.org>
Subject: Re: [Xenomai-core] nkpod->watchdog_trigger per CPU?
Date: Fri, 7 Apr 2006 15:31:34 +0200 [thread overview]
Message-ID: <17462.27062.971201.82560@domain.hid> (raw)
In-Reply-To: <44361D46.9080003@domain.hid>
Philippe Gerum wrote:
> Jan Kiszka wrote:
> > Hi,
> >
> > analysing the watchdog characteristics in our scenarios, I just wondered
> > if it is SMP-aware (we have no SMP in use, it's a pure analytical concern).
> >
> > The watchdog timeout is stored system-wide in nkpod->watchdog_trigger,
> > but it is based on a per-CPU clock (TSC). Is the tick IRQ bound to a
> > specific CPU in SMP scenarios so that this doesn't matter? Or am I just
> > overseeing some detail?
> >
>
> Good catch. This code was written before per-CPU ticking became the
> "official" implementation, so it needs to be updated.
The watchdog is handled on a per-cpu basis with revision 901.
--
Gilles Chanteperdrix.
prev parent reply other threads:[~2006-04-07 13:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-07 7:43 [Xenomai-core] nkpod->watchdog_trigger per CPU? Jan Kiszka
2006-04-07 8:05 ` Philippe Gerum
2006-04-07 13:31 ` Gilles Chanteperdrix [this message]
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