/**
* __rt_mutex_init - initialize the rt lock
*
* @lock: the rt lock to be initialized
*
* Initialize the rt lock to unlocked state.
*
* Initializing of a locked rt lock is not allowed
*/
void __rt_mutex_init(struct rt_mutex *lock, const char *name)
{
lock->owner = NULL;
raw_spin_lock_init(&lock->wait_lock);
plist_head_init_raw(&lock->wait_list, &lock->wait_lock);
debug_rt_mutex_init(lock, name);
}
static void rt_mutex_init_task(struct task_struct *p)
{
raw_spin_lock_init(&p->pi_lock);
#ifdef CONFIG_RT_MUTEXES
plist_head_init_raw(&p->pi_waiters, &p->pi_lock);
p->pi_blocked_on = NULL;
#endif
}
/*
* we initialize the wait_list runtime. (Could be done build-time and/or
* boot-time.)
*/
static inline void init_lists(struct rt_mutex *lock)
{
if (unlikely(!lock->wait_list.prio_list.prev)) {
plist_head_init_raw(&lock->wait_list, &lock->wait_lock);
#ifdef CONFIG_DEBUG_RT_MUTEXES
pi_initialized++;
#endif
}
}