linux-kernel - Re: [PATCH] tracing/core: Add current context on tracing recursion warning

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Message-ID: <49EBC3BF.50404@cn.fujitsu.com>
Date:	Mon, 20 Apr 2009 08:37:19 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Zhaolei <zhaolei@...fujitsu.com>,
	Tom Zanussi <tzanussi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] tracing/core: Add current context on tracing recursion
 warning

> Now I can reproduce it. It seems to happen when I set a filter,

Right, you said filter seems to be broken, so I tried to set a filter
and enabled the trace event, and got this warning.

> but also on other situations:
> 
> Bisected back to:
> 
> commit 261842b7c9099f56de2eb969c8ad65402d68e00e
> tracing: add same level recursion detection
> 
> It might be caused by a bug in this patch or
> by real tracing recursions on some places.
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