Date: Wed, 17 Feb 2010 12:43:12 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: "Leonidas ." <leonidas137@gmail.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Notification when a task is created/exits
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On Wed, 17 Feb 2010 08:46:51 +0530
"Leonidas ." <leonidas137@gmail.com> wrote:
\
> >  2. implement cgroup subsystem
> >    AFAIK, in the latest kernel, cgroup subsystem can be implemented as module.
> >    cgroup has fork/exit handler.
> >    And you can implement some useful controls for tasks you watch via
> >    cgroup's control interface.
> >
> 
> This sounds close to what I have in mind, but unfortunately I dont
> have any idea what is cgroup
> subsystem. How to implement cgroup subsystem? Can you give pointers to
> some existing code
> or document? 
Documentation/cgroup/*.txt
Maybe cpuacct cgroup in kernel/sche.c or device cgroup in security/device_cgroup.c
is portable size, but they are not module.
block/blk-cgroup is module and maybe in readable size.

> Also, using this mechanism can we monitor each thread created in
> user space? I.e. it is only a fork handler or even a
> pthread_create/clone can be tracked this way.
> 
please read documents. I think you can.

Thanks,
-Kame

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