From: Arjan van de Ven <arjan@infradead.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: john stultz <johnstul@us.ibm.com>,
Andi Kleen <andi@firstfloor.org>,
lkml <linux-kernel@vger.kernel.org>,
Mike Fulton <fultonm@ca.ibm.com>,
Sean Foley <Sean_Foley@ca.ibm.com>,
Darren Hart <dvhltc@us.ibm.com>
Subject: Re: [RFC][PATCH] Add prctl to set sibling thread names
Date: Wed, 21 Oct 2009 19:48:22 -0700 [thread overview]
Message-ID: <20091021194822.72895c46@infradead.org> (raw)
In-Reply-To: <20091022004919.GT32470@one.firstfloor.org>
On Thu, 22 Oct 2009 02:49:19 +0200
Andi Kleen <andi@firstfloor.org> wrote:
> > you're pretty much the first now who touches ->comm from
> > not-the-thread-itself.... are you sure that is safe?
>
> It's not, there is no locking. On the other hand nothing should crash,
> just users might see half rewritten data.
.. with strings this is tricky though.. if the new string is longer
than the old one the terminating zero might just be missed etc.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-10-22 2:47 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-21 23:21 john stultz
2009-10-22 0:28 ` Andi Kleen
2009-10-22 0:42 ` john stultz
2009-10-22 0:44 ` Andi Kleen
2009-10-22 0:48 ` Arjan van de Ven
2009-10-22 0:49 ` Andi Kleen
2009-10-22 2:48 ` Arjan van de Ven [this message]
2009-10-24 3:54 ` Andi Kleen
2009-10-26 23:56 ` john stultz
2009-10-22 0:52 ` john stultz
2009-10-22 2:00 ` Andrew Morton
2009-11-05 2:26 ` KOSAKI Motohiro
2009-11-05 5:17 ` Darren Hart
2009-11-05 5:22 ` KOSAKI Motohiro
2009-11-05 5:36 ` Darren Hart
2009-11-05 5:42 ` KOSAKI Motohiro
2009-11-05 19:11 ` john stultz
[not found] ` <OF5EE04242.D2B67AF2-ON85257665.0064683D-85257665.0068209E@ca.ibm.com>
2009-11-10 5:27 ` KOSAKI Motohiro
2009-11-10 20:16 ` john stultz
2009-11-11 0:04 ` KOSAKI Motohiro
2009-11-05 19:03 Sean Foley
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