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From: Kumar Gala <galak@kernel.crashing.org>
Subject: Re: Decermenter overflow interrupt atfer the init.d launch.
Date: Fri, 27 Jul 2007 01:46:42 -0500
To: Nicolas Mederle <mederle_nicolas@yahoo.fr>
Cc: linuxppc-dev@ozlabs.org, linuxppc-embedded@ozlabs.org
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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.

- k