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Subject: Re: [RFC] RT-patch update to remove the global pi_lock
From: Daniel Walker <dwalker@mvista.com>
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To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
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Date: Thu, 25 Aug 2005 14:32:17 -0700
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On Thu, 2005-08-25 at 16:09 -0400, Steven Rostedt wrote:

> A word of caution (aka. disclaimer). This is still new.  I still expect
> there are some cases in the code that was missed and can cause a dead
> lock or other bad side effect.  Hopefully, we can iron these all out.
> Also, I noticed that since the task takes it's own pi_lock for most of
> the code, if something locks up and a NMI goes off, the down_trylock in
> printk will also lock when it tries to take it's own pi_lock.

maybe it's time for ALL_TASKS_PI ?


Daniel