Re: [PATCH RFC tip/core/rcu 4/4] rcu: Ensure that RCU_FAST_NO_HZtimers expire on correct CPU

[Peter Zijlstra]

On Mon, 2012-04-23 at 09:16 -0700, Paul E. McKenney wrote:
> -               mod_timer(&per_cpu(rcu_idle_gp_timer, cpu),
> -                         per_cpu(rcu_idle_gp_timer_expires, cpu));
> +               tp = &per_cpu(rcu_idle_gp_timer, cpu);
> +               tp->expires = per_cpu(rcu_idle_gp_timer_expires, cpu);
> +               add_timer_on(tp, cpu); 

The simpler change looks to use mod_timer_pinned()
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