remove_waiter

Name:Remove a waiter from a lock and give up* Must be called with lock->wait_lock held and interrupts disabled. I must* have just failed to try_to_take_rt_mutex().

Proto:static void remove_waiter(struct rt_mutex *lock, struct rt_mutex_waiter *waiter)

Type:void

Parameter:

Type	Parameter	Name
struct rt_mutex *	lock
struct rt_mutex_waiter *	waiter

1070

is_top_waiter = waiter == rt_mutex_top_waiter(lock)

1071

owner = rt_mutex_owner(lock)

1074

lockdep_assert_held( & wait_lock)

1076

raw_spin_lock( & pi_lock)

1077

rt_mutex_dequeue(lock, waiter)

1078

pi_blocked_on = NULL

1079

raw_spin_unlock( & pi_lock)

1085

If Not owner || Not is_top_waiter Then Return

1088

raw_spin_lock( & Protection of the PI data structures: )

1090

rt_mutex_dequeue_pi(owner, waiter)

1092

If rt_mutex_has_waiters(lock) Then rt_mutex_enqueue_pi(owner, rt_mutex_top_waiter(lock))

1095

rt_mutex_adjust_prio(owner)

1098

next_lock = task_blocked_on_lock(owner)

1100

raw_spin_unlock( & Protection of the PI data structures: )

1106

If Not next_lock Then Return

1110

get_task_struct(owner)

1112

raw_spin_unlock_irq( & wait_lock)

1114

Adjust the priority chain

1117

raw_spin_lock_irq( & wait_lock)

**Caller**
Name	Describe
rt_mutex_slowlock	Slow path lock function:
rt_mutex_start_proxy_lock	_mutex_start_proxy_lock() - Start lock acquisition for another task@lock: the rt_mutex to take@waiter: the pre-initialized rt_mutex_waiter@task: the task to prepare Starts the rt_mutex acquire; it enqueues the @waiter and does deadlock* detection
rt_mutex_cleanup_proxy_lock	_mutex_cleanup_proxy_lock() - Cleanup failed lock acquisition@lock: the rt_mutex we were woken on@waiter: the pre-initialized rt_mutex_waiter* Attempt to clean up after a failed __rt_mutex_start_proxy_lock() or* rt_mutex_wait_proxy_lock()

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