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Subject: Re: [PATCH RFC] perf: fix find_swevent_head() RCU lockdep splat
From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
       linux-kernel@vger.kernel.org, mingo@elte.hu, paulus@samba.org,
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Date: Fri, 14 May 2010 09:47:05 +0200
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On Thu, 2010-05-13 at 22:48 +0200, Frederic Weisbecker wrote:
> +       head = find_swevent_head(cpuctx, event->attr.type,
> +                                event->attr.config, event); 

might as well only pass event and have the function do those derefs.