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From: Keith Owens <kaos@sgi.com>
To: vinay hegde <thisismevinay@yahoo.co.in>
cc: linux-kernel@vger.kernel.org
Subject: Re: Need help regarding kernel threads 
In-reply-to: Your message of "Tue, 02 Aug 2005 09:57:51 +0100."
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Date: Tue, 02 Aug 2005 19:22:50 +1000
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On Tue, 2 Aug 2005 09:57:51 +0100 (BST), 
vinay hegde <thisismevinay@yahoo.co.in> wrote:
>How to differentiate kernel threads from normal
>processes inside the Linux kernel code? 

The Linux Kernel Debugger (ftp://oss.sgi.com/projects/kdb/download/v4.4)
distinguishes between idle tasks, sleeping system daemons and the rest
(typically user tasks).  An idle task has pid 0, a sleeping system
daemon has a NULL mm field and is in S state, everything else is
treated as a normal task.

Download the latest kdb common patch and look at function
kdb_task_state_char.