int cpu_hp_enable:1; /* Enable CPU hotplug notif. */
int hp_iter_enable:1; /* Enable hp iter notif. */
wait_queue_head_t read_wait; /* reader wait queue */
+ wait_queue_head_t hp_wait; /* CPU hotplug wait queue */
+ int finalized; /* Has channel been finalized */
struct channel_iter iter; /* Channel read-side iterator */
struct kref ref; /* Reference count */
};