From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Walker <dwalker@mvista.com>
Subject: Re: try_module_get and friends
Date: Wed, 05 Mar 2008 13:15:02 -0800
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Cc: "Frank Ch. Eigler" <fche@redhat.com>,
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To: Steven Rostedt <rostedt@goodmis.org>
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On Wed, 2008-03-05 at 15:54 -0500, Steven Rostedt wrote:

> Actually, we were simply thinking of calling an rcu_lock before checking
> the handlers, and releasing the lock when all are done. Then before doing
> the module unload, we do a rcu_sync. Note, no interrupt handler should
> ever do a rcu_sync.

There's already some smp synchronize inside free_irq, are you sure
that's not already handling this for smp? For -rt we could just enable
it for UP ..

Daniel