From: Ingo Molnar <mingo@elte.hu>
To: David Singleton <dsingleton@mvista.com>
Cc: dino@in.ibm.com, linux-kernel@vger.kernel.org,
robustmutexes@lists.osdl.org
Subject: Re: Recursion bug in -rt
Date: Tue, 20 Dec 2005 14:19:56 +0100 [thread overview]
Message-ID: <20051220131956.GA24408@elte.hu> (raw)
In-Reply-To: <43A1BD61.5070409@mvista.com>
* David Singleton <dsingleton@mvista.com> wrote:
> Dinakar,
> after further testing and investigation I believe you original
> assessment was correct.
> The problem you are seeing is not a library problem.
> The changes to down_futex need to be reverted. There is a new patch at
>
> http://source.mvista.com/~dsingleton/patch-2.6.15-rc5-rt2-rf2.
>
> that reverts the changes to down_futex.
hm, i'm looking at -rf4 - these changes look fishy:
- _raw_spin_lock(&lock_owner(lock)->task->pi_lock);
+ if (current != lock_owner(lock)->task)
+ _raw_spin_lock(&lock_owner(lock)->task->pi_lock);
why is this done?
Ingo
next prev parent reply other threads:[~2005-12-20 13:20 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-14 22:39 Recursion bug in -rt Dinakar Guniguntala
2005-12-15 1:03 ` david singleton
2005-12-15 19:44 ` Dinakar Guniguntala
2005-12-15 20:40 ` David Singleton
2005-12-16 0:02 ` david singleton
2005-12-16 18:42 ` Dinakar Guniguntala
2005-12-16 21:26 ` David Singleton
2005-12-19 11:56 ` Dinakar Guniguntala
2005-12-19 20:11 ` David Singleton
2005-12-15 19:00 ` David Singleton
2005-12-15 19:52 ` Dinakar Guniguntala
2005-12-20 13:19 ` Ingo Molnar [this message]
2005-12-20 15:50 ` Dinakar Guniguntala
2005-12-20 17:43 ` Esben Nielsen
2005-12-20 19:33 ` Steven Rostedt
2005-12-20 20:42 ` Esben Nielsen
2005-12-20 21:20 ` Steven Rostedt
2005-12-20 21:55 ` david singleton
2005-12-20 22:56 ` Esben Nielsen
2005-12-20 23:12 ` Steven Rostedt
2005-12-20 23:55 ` Esben Nielsen
2005-12-22 4:37 ` david singleton
2005-12-20 22:43 ` Esben Nielsen
2005-12-20 22:59 ` Steven Rostedt
2006-01-03 1:54 ` david singleton
2006-01-05 2:14 ` david singleton
2006-01-05 9:43 ` Esben Nielsen
2006-01-05 17:11 ` david singleton
2006-01-05 17:47 ` Esben Nielsen
2006-01-05 18:26 ` david singleton
2006-01-07 2:40 ` robust futex deadlock detection patch david singleton
[not found] ` <a36005b50601071145y7e2ead9an4a4ca7896f35a85e@mail.gmail.com>
2006-01-07 19:49 ` Ulrich Drepper
2006-01-09 9:23 ` Esben Nielsen
2006-01-09 20:01 ` David Singleton
2006-01-09 20:16 ` Esben Nielsen
2006-01-09 21:08 ` Steven Rostedt
2006-01-09 21:19 ` Esben Nielsen
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