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Message-ID: <alpine.DEB.1.10.0808202101200.27236@gandalf.stny.rr.com>
Date: Wed, 20 Aug 2008 21:01:56 -0400 (EDT)
From: Steven Rostedt <rostedt@...dmis.org>
To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
cc: linux-kernel@...r.kernel.org, mingo@...e.hu,
akpm@...ux-foundation.org, ego@...ibm.com, dvhltc@...ibm.com,
niv@...ibm.com
Subject: Re: [PATCH -tip/core/rcu] fixes to include/linux/rcupreempt.h
On Wed, 20 Aug 2008, Paul E. McKenney wrote:
> > > -DECLARE_PER_CPU(struct rcu_dyntick_sched, rcu_dyntick_sched);
> >
> > In -rt we deleted the first declaration. Is rcu_dyntick_sched defined on
> > !CONFIG_NO_HZ?
>
> It builds for me in current tip/core/rcu without the above
> DECLARE_PER_CPU(). And the reason is the call_rcu_sched() function, which
> requires rcu_dyntick_sched.sched_qs and rcu_dyntick_sched.sched_qs_snap
> be defined even if !CONFIG_NO_HZ.
>
> I suppose I could remove the other elements from the rcu_dyntick_sched
> structure if !CONFIG_NO_HZ. Worthwhile?
>
Nah, forget about it. I've got a few different versions I'm dealing with.
Thanks,
-- Steve
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