Merge "PM / Wakeup: Use rcu callbacks for better performance"

}

EXPORT_SYMBOL_GPL(wakeup_source_destroy);

/**

 * wakeup_source_destroy_cb

 * defer processing until all rcu references have expired

 */

static void wakeup_source_destroy_cb(struct rcu_head *head)

{

	wakeup_source_destroy(container_of(head, struct wakeup_source, rcu));

}

/**

 * wakeup_source_add - Add given object to the list of wakeup sources.

 * @ws: Wakeup source object to add to the list.

}

EXPORT_SYMBOL_GPL(wakeup_source_remove);

/**

 * wakeup_source_remove_async - Remove given object from the wakeup sources

 * list.

 * @ws: Wakeup source object to remove from the list.

 *

 * Use only for wakeup source objects created with wakeup_source_create().

 * Memory for ws must be freed via rcu.

 */

static void wakeup_source_remove_async(struct wakeup_source *ws)

{

	unsigned long flags;

	if (WARN_ON(!ws))

		return;

	spin_lock_irqsave(&events_lock, flags);

	list_del_rcu(&ws->entry);

	spin_unlock_irqrestore(&events_lock, flags);

}

/**

 * wakeup_source_register - Create wakeup source and add it to the list.

 * @name: Name of the wakeup source to register.

void wakeup_source_unregister(struct wakeup_source *ws)

{

	if (ws) {

		wakeup_source_remove(ws);

		wakeup_source_destroy(ws);

		wakeup_source_remove_async(ws);

		call_rcu(&ws->rcu, wakeup_source_destroy_cb);

	}

}

EXPORT_SYMBOL_GPL(wakeup_source_unregister);

struct wakeup_source {

	const char 		*name;

	struct list_head	entry;

	struct rcu_head		rcu;

	spinlock_t		lock;

	struct timer_list	timer;

	unsigned long		timer_expires;