From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: paulmck@linux.vnet.ibm.com
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
akpm@linux-foundation.org, Ingo Molnar <mingo@elte.hu>,
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" <davem@davemloft.net>
Subject: Re: [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5)
Date: Mon, 19 Apr 2010 09:17:58 +0800 [thread overview]
Message-ID: <4BCBAF46.4010603@cn.fujitsu.com> (raw)
In-Reply-To: <20100417125052.236240763@efficios.com>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
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
>
next prev parent reply other threads:[~2010-04-19 1:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-17 12:48 [patch 0/5] rcu head debugobjects Mathieu Desnoyers
2010-04-17 12:48 ` [patch 1/5] Debugobjects transition check Mathieu Desnoyers
2010-04-17 12:48 ` [patch 2/5] rcu head introduce rcu head init on stack Mathieu Desnoyers
2010-04-17 12:48 ` [patch 3/5] remove all rcu head initializations, except on_stack initializations Mathieu Desnoyers
2010-04-17 12:48 ` [patch 4/5] rcu head remove init Mathieu Desnoyers
2010-04-17 12:48 ` [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5) Mathieu Desnoyers
2010-04-19 1:17 ` Lai Jiangshan [this message]
2010-04-19 13:34 ` Paul E. McKenney
2010-04-18 0:48 ` [patch 0/5] rcu head debugobjects Paul E. McKenney
2010-04-21 17:31 ` Paul E. McKenney
2010-04-22 1:20 ` Mathieu Desnoyers
2010-04-22 1:23 ` [PATCH] rcu fix rcu head init on stack in rcutree_plugin.h Mathieu Desnoyers
2010-04-22 22:52 ` Paul E. McKenney
-- strict thread matches above, loose matches on Subject: below --
2010-03-29 14:34 [patch 0/5] RCU head debug (v5) Mathieu Desnoyers
2010-03-29 14:34 ` [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5) Mathieu Desnoyers
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