linux-kernel - Re: [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5)

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Message-ID: <20100419133404.GC2564@linux.vnet.ibm.com>
Date:	Mon, 19 Apr 2010 06:34:04 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	akpm@...ux-foundation.org, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, dipankar@...ibm.com,
	josh@...htriplett.org, dvhltc@...ibm.com, niv@...ibm.com,
	tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
	Valdis.Kletnieks@...edu, dhowells@...hat.com,
	eric.dumazet@...il.com, adobriyan@...il.com,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [patch 5/5] tree/tiny rcu: Add debug RCU head objects (v5)

On Mon, Apr 19, 2010 at 09:17:58AM +0800, Lai Jiangshan wrote:
> 
> Reviewed-by: Lai Jiangshan <laijs@...fujitsu.com>

Thank you, Lai!!!  I have added your Reviewed-by.

							Thanx, Paul

> 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
> > 
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