linux-kernel - Re: [PATCH 2/4] perf_counter: optimize mmap/comm tracking

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Message-ID: <20090409091622.GA23636@elte.hu>
Date:	Thu, 9 Apr 2009 11:16:22 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] perf_counter: optimize mmap/comm tracking


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> +static atomic_t nr_comm_tracking __read_mostly;

hm, nr_comm_tracking is not actually used by any fastpath - just 
increased and then decreased.

	Ingo
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