From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757490Ab0DSBRp (ORCPT ); Sun, 18 Apr 2010 21:17:45 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:55716 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754208Ab0DSBRo (ORCPT ); Sun, 18 Apr 2010 21:17:44 -0400 Message-ID: <4BCBAF46.4010603@cn.fujitsu.com> Date: Mon, 19 Apr 2010 09:17:58 +0800 From: Lai Jiangshan User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Mathieu Desnoyers , akpm@linux-foundation.org, Ingo Molnar , linux-kernel@vger.kernel.org, dipankar@in.ibm.com, josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com, adobriyan@gmail.com, "David S. Miller" Subject: Re: [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5) References: <20100417124837.536020244@efficios.com> <20100417125052.236240763@efficios.com> In-Reply-To: <20100417125052.236240763@efficios.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Reviewed-by: Lai Jiangshan Mathieu Desnoyers wrote: > Helps finding racy users of call_rcu(), which results in hangs because list > entries are overwritten and/or skipped. > > Changelog since v4: > - Bissectability is now OK > - Now generate a WARN_ON_ONCE() for non-initialized rcu_head passed to > call_rcu(). Statically initialized objects are detected with > object_is_static(). > - Rename rcu_head_init_on_stack to init_rcu_head_on_stack. > - Remove init_rcu_head() completely. > > Changelog since v3: > - Include comments from Lai Jiangshan >