Re: Recursion bug in -rt

[Ingo Molnar]

* 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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