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Date: Tue, 24 Nov 2009 23:34:43 +0100
From: Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 0/5] perf kmem: Add more functions and show more
 statistics
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To: Li Zefan <lizf@cn.fujitsu.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>, Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>, Peter Zijlstra <peterz@infradead.org>, Frederic Weisbecker <fweisbec@gmail.com>, LKML <linux-kernel@vger.kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>
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* Ingo Molnar <mingo@elte.hu> wrote:

> 
> * Li Zefan <lizf@cn.fujitsu.com> wrote:
> 
> > So I think some new updates on kernel perf_event break.
> 
> yeah, you were right. This commit in latest -tip should fix it:
> 
>  fe61267: perf_events: Fix bad software/trace event recursion counting

i tested perf kmem and it works fine now:

 aldebaran:~> perf kmem

 SUMMARY
 =======
 Total bytes requested: 153166032
 Total bytes allocated: 188544080
 Total bytes wasted on internal fragmentation: 35378048
 Internal fragmentation: 18.763807%
 Cross CPU allocations: 61680/451425

	Ingo

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