Re: [ANNOUNCE] 3.2.9-rt17

[Steven Rostedt]

On Thu, 2012-03-08 at 20:48 +0100, Peter Zijlstra wrote:
> On Thu, 2012-03-08 at 13:42 -0500, Steven Rostedt wrote:
> > cpu_chill_on_lock().
> 
> I think what you were hinting at is:
> 
>   spin_lock(&lock);
>   spin_unlock(&lock);

Exactly.

> 
> which is the rt_mutex implementation of spin_unlock_wait(). No new
> function needed for that.

Yes but...
> 
> Trouble is that you cannot use inode->i_lock as explained..

Right!


What I was hinting at was that the spin_lock() can boost, but it could
also fail if there was a deadlock detected, and it wouldn't cause the
system to hang.

-- Steve


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