linux-kernel - Re: [PATCH v2] tracing/filters: add filter

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Message-ID: <49E814E2.4000600@cn.fujitsu.com>
Date:	Fri, 17 Apr 2009 13:34:26 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Tom Zanussi <tzanussi@...il.com>
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH v2] tracing/filters: add filter_mutex to protect filter
 predicates

Tom Zanussi wrote:
> This patch adds a filter_mutex to prevent the filter predicates from
> being accessed concurrently by various external functions.
> 
> It's based on a previous patch by Li Zefan:
>         "[PATCH 7/7] tracing/filters: make filter preds RCU safe"
> 
> v2 changes:
> 
> - fixed wrong value returned in a add_subsystem_pred() failure case
> noticed by Li Zefan.
> 
> Signed-off-by: Tom Zanussi <tzanussi@...il.com>
> 

Reviewed-by: Li Zefan <lizf@...fujitsu.com>
Tested-by: Li Zefan <lizf@...fujitsu.com>


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