From mboxrd@z Thu Jan  1 00:00:00 1970
From: gregkh@linuxfoundation.org (Greg KH)
Date: Tue, 7 Feb 2012 11:17:02 -0800
Subject: Iterating through all the processes in a module
In-Reply-To: <CAPNxggakgukeLsAQbaESN0LC5EUxzks1USy0hKH1JbkuFq5i1Q@mail.gmail.com>
References: <CAPNxggakgukeLsAQbaESN0LC5EUxzks1USy0hKH1JbkuFq5i1Q@mail.gmail.com>
Message-ID: <20120207191702.GA9172@kroah.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Tue, Feb 07, 2012 at 06:45:24PM +0100, Arokux B. wrote:
> Hi,
> 
> (for learning purposes) I would like to iterate through all the tasks
> in a module and output different information about them. For this task
> I need to lock the list of all tasks (need I?). I've seen some example
> in the kernel code which lock tasklist_lock. However this symbol
> cannot be used by modules. Its export was removed by
> c59923a15c12d2b3597af913bf234a0ef264a38b commit.
> 
> Is there any other way I can lock the list of tasks then?

Don't do such a foolish thing?  :)

Seriously, don't make your code a module, just build it into the kernel.

greg k-h