From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, linuxppc-embedded@ozlabs.org
Subject: Re: Decermenter overflow interrupt atfer the init.d launch.
Date: Fri, 27 Jul 2007 17:26:20 +1000 [thread overview]
Message-ID: <1185521180.5495.194.camel@localhost.localdomain> (raw)
In-Reply-To: <D4037DB6-8832-4057-A9FF-BAD32592E6C9@kernel.crashing.org>
On Fri, 2007-07-27 at 01:46 -0500, Kumar Gala wrote:
> On Jul 27, 2007, at 1:36 AM, Nicolas Mederle wrote:
>
> > Hi,
> >
> > I want to know how the kernel switch the task. Because my
> > kernel
> > start very well, and it launch the init.d. With the log, i can see
> > that
> > the kernel launch the getty task. But after, there is a decrementer
> > overflow interrupt ( vector at adress 900 ). Is it the task
> > switch? Or
> > is it an error in the decrementer init.
>
> This should be a task switch. The decrementer is used to handle the
> periodic interrupt to switch processes.
I would have expected quite of few of these actually before you get
there :-)
Ben.
prev parent reply other threads:[~2007-07-27 7:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-27 6:36 Decermenter overflow interrupt atfer the init.d launch Nicolas Mederle
2007-07-27 6:46 ` Kumar Gala
2007-07-27 7:26 ` Benjamin Herrenschmidt [this message]
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