Re: [PATCH tip/core/rcu 0/2] RCU force_quiescent_state() fix and dyntick cleanup

Paul E. McKenney
2009-10-29T14:10:23Z

On Thu, Oct 29, 2009 at 10:05:37AM +0100, Ingo Molnar wrote:
>
> * Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:
>
> > This patch series contains a cleanup and a fix:
> >
> > o Code cleanup from Lai Jiangshan that makes the calls to
> > rcu_irq_enter() and rcu_irq_exit() more obviously correct.
> > The previous code worked because rcu_irq_exit() is always
> > an empty function if !NO_HZ.
>
> Can go via tip:core/rcu, agreed?

Agreed.

> > o Fix a low-probability race in the TREE_RCU infrastructure
> > that can be triggered by extremely long grace periods.
>
> Should go via tip:core/urgent as it's a fix for .32, agreed?

Also agreed.

Thanx, Paul