linux-kernel - Re: [PATCH] tracing/profile: Fix profile_disable vs module

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Message-ID: <alpine.DEB.2.00.0908271052370.27674@gandalf.stny.rr.com>
Date:	Thu, 27 Aug 2009 10:56:19 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
cc:	Li Zefan <lizf@...fujitsu.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tracing/profile: Fix profile_disable vs module_unload


On Thu, 27 Aug 2009, Mathieu Desnoyers wrote:

> Looks good. Just don't forget to eventually add the "synchronize" calls
> between tracepoint unregistration and the removal of their module. There
> is a race condition in the way you do it currently.

I'm trying to figure out the race here. What will disappear in the 
tracepoint? Could you give a brief example of the issue.

Thanks,

-- Steve


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