Re: Recursion bug in -rt
From: Ingo Molnar
Date: Tue Dec 20 2005 - 08:24:24 EST
* David Singleton <dsingleton@xxxxxxxxxx> 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
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