linux-kernel - Re: perf regression: failed to stat syscalls events

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Message-ID: <20100624014422.GA17476@localhost>
Date:	Thu, 24 Jun 2010 09:44:22 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: perf regression: failed to stat syscalls events

On Thu, Jun 24, 2010 at 09:39:15AM +0800, Wu Fengguang wrote:
> Greetings,
> 
> I noticed that
> 
>         # perf stat -e syscalls:sys_enter_mmap true
> 
> refuse to work on 2.6.35-rc1. The last working kernel is 2.6.34.

Other events like lock:* or block:* or whatever continue to work.
So this is a problem specific to syscalls:*.

Thanks,
Fengguang
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