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Message-ID: <18744.57057.243817.407691@cargo.ozlabs.ibm.com>
Date: Fri, 5 Dec 2008 18:57:21 +1100
From: Paul Mackerras <paulus@samba.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
       LKML <linux-kernel@vger.kernel.org>, linux-arch@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>,
       Stephane Eranian <eranian@googlemail.com>,
       Eric Dumazet <dada1@cosmosbay.com>,
       Robert Richter <robert.richter@amd.com>,
       Arjan van de Veen <arjan@infradead.org>, Peter Anvin <hpa@zytor.com>,
       Steven Rostedt <rostedt@goodmis.org>,
       David Miller <davem@davemloft.net>
Subject: Re: [patch 0/3] [Announcement] Performance Counters for Linux
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Peter Zijlstra writes:

> So, while most people would not consider two consecutive read() ops to
> be close or near the same time, due to preemption and such, that is
> taken away by the fact that the counters are task local time based - so
> preemption doesn't affect thing. Right?

I'm sorry, I don't follow the argument here.  What do you mean by
"task local time based"?

Paul.

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