Re: [RFC PATCH 1/5] Move task's RCU code to rcupdate.h

[Peter Zijlstra]

On Mon, 2011-03-28 at 10:58 +0800, Lai Jiangshan wrote:
> +struct task_rcu_struct {
> +#ifdef CONFIG_PREEMPT_RCU
> +       int rcu_read_lock_nesting;
> +       char rcu_read_unlock_special;

Is there a good reason that's a char? It'll leave a 3 byte hole in this
location.

> +       struct list_head rcu_node_entry;
> +#ifdef CONFIG_TREE_PREEMPT_RCU
> +       struct rcu_node *rcu_blocked_node;
> +#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */
> +#ifdef CONFIG_RCU_BOOST
> +       struct rt_mutex *rcu_boost_mutex;
> +#endif /* #ifdef CONFIG_RCU_BOOST */
> +#endif /* #ifdef CONFIG_PREEMPT_RCU */
> +}; 
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