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Reply-To: <frey@cxau.zko.dec.com>
From: "Martin Frey" <frey@scs.ch>
To: "'Benjamin Herrenschmidt'" <benh@kernel.crashing.org>,
        <linux-kernel@vger.kernel.org>
Subject: RE: kernel_thread vs. zombie
Date: Thu, 22 Mar 2001 06:32:52 -0800
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Hi,

>How do I force a kernel thread to always be a child of init and never
>become a zombie ?
>
>I do call daemonize at the beginning of the thread (as it won't do
>anything with files, signals or whatever), but that doesn't 
>seem to be enough.
>
Have a look at:
http://www.scs.ch/~frey/linux/kernelthreads.html
I have an example there that starts and stops kernel threads
from init_module and never produced a zombie.
I use the same code also to start threads from ioctl and it
works for me. I tested it on UP and SMP, Intel and Alpha,
2.2.18 and 2.4.2.

Regards,

Martin

-- 
Supercomputing Systems AG       email: frey@scs.ch
Martin Frey                     web:   http://www.scs.ch/~frey/
at Compaq Computer Corporation  phone: +1 603 884 4266
ZKO2-3P09, 110 Spit Brook Road, Nashua, NH 03062

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