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Date: Tue, 30 Sep 2008 12:08:30 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
       "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Steven Rostedt <rostedt@goodmis.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] RCU read sched
Message-ID: <20080930100829.GC7557@elte.hu>
References: <48E08B05.7030802@cn.fujitsu.com> <20080929082722.GB18663@elte.hu> <20080929150646.GD11245@Krystal>
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* Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:

> (probably already in -tip)
> 
> Add rcu_read_lock_sched() and rcu_read_unlock_sched() to rcupdate.h to match the
> recently added write-side call_rcu_sched() and rcu_barrier_sched(). They also
> match the no-so-recently-added synchronize_sched().
> 
> It will help following matching use of the update/read lock primitives. Those
> new read lock will replace preempt_disable()/enable() used in pair with
> RCU-classic synchronization.
> 
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
> Acked-by: Peter Zijlstra <peterz@infradead.org>
> CC: Paul E McKenney <paulmck@linux.vnet.ibm.com>

Paul, does this API extension look good to you?

i'll apply it to tip/core/rcu if yes.

	Ingo