From: george anzinger <george@mvista.com>
To: root@chaos.analogic.com
Cc: ic@aleph1.net, linux-kernel@vger.kernel.org
Subject: Re: process 0
Date: Fri, 23 Aug 2002 13:34:53 -0700 [thread overview]
Message-ID: <3D669C6D.5F0D5005@mvista.com> (raw)
In-Reply-To: Pine.LNX.3.95.1020823085056.169A-100000@chaos.analogic.com
"Richard B. Johnson" wrote:
>
> On Fri, 23 Aug 2002 ic@aleph1.net wrote:
>
> > Hi.
> > Maybe this is a little off topic, but does what is the real status of
> > Process 0 (swapper) ?
> > Some people keep telling me it doesn't exist, but on some kernel crashes
> > I can see "process swapper (pid 0, process nr 0, ...)"
> >
> > Can someone help me ?
>
> Well, it kind-of exists. It's what the CPU does when there is nothing
> else to do. Sort of like:
>
> for(;;)
> schedule();
>
> It's also where it 'goes' if init returns <grin>.
ALSO, FWIW on a N way SMP there will be N process 0s. So
much for unique pids :)
--
George Anzinger george@mvista.com
High-res-timers:
http://sourceforge.net/projects/high-res-timers/
Preemption patch:
http://www.kernel.org/pub/linux/kernel/people/rml
prev parent reply other threads:[~2002-08-23 20:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-23 12:11 process 0 ic
2002-08-23 12:26 ` Rik van Riel
2002-08-23 12:56 ` Richard B. Johnson
2002-08-23 20:34 ` george anzinger [this message]
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