linux-kernel - Re: [PATCH RFC] perf: fix find_swevent

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Message-ID: <1273823225.5605.3604.camel@twins>
Date:	Fri, 14 May 2010 09:47:05 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, paulus@...ba.org,
	acme@...hat.com
Subject: Re: [PATCH RFC] perf: fix find_swevent_head() RCU lockdep splat

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.
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