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locking/rtmutex: Update stale plist comments 

... as of fb00aca474 (rtmutex: Turn the plist into an rb-tree) we
no longer use plists for queuing any waiters. Update stale comments.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1432056298-18738-4-git-send-email-dave@stgolabs.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Davidlohr Bueso 2015-05-19 10:24:57 -07:00 committed by Thomas Gleixner
parent 802ab58da7
commit 9f40a51a35
1 changed files with 9 additions and 9 deletions
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18
kernel/locking/rtmutex.c
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@ -624,7 +624,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
*/
prerequeue_top_waiter = rt_mutex_top_waiter(lock);
/* [7] Requeue the waiter in the lock waiter list. */
/* [7] Requeue the waiter in the lock waiter tree. */
rt_mutex_dequeue(lock, waiter);
waiter->prio = task->prio;
rt_mutex_enqueue(lock, waiter);
@ -662,7 +662,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
/*
* The waiter became the new top (highest priority)
* waiter on the lock. Replace the previous top waiter
* in the owner tasks pi waiters list with this waiter
* in the owner tasks pi waiters tree with this waiter
* and adjust the priority of the owner.
*/
rt_mutex_dequeue_pi(task, prerequeue_top_waiter);
@ -673,7 +673,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
/*
* The waiter was the top waiter on the lock, but is
* no longer the top prority waiter. Replace waiter in
* the owner tasks pi waiters list with the new top
* the owner tasks pi waiters tree with the new top
* (highest priority) waiter and adjust the priority
* of the owner.
* The new top waiter is stored in @waiter so that
@ -747,7 +747,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
*
* @lock: The lock to be acquired.
* @task: The task which wants to acquire the lock
* @waiter: The waiter that is queued to the lock's wait list if the
* @waiter: The waiter that is queued to the lock's wait tree if the
* callsite called task_blocked_on_lock(), otherwise NULL
*/
static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
@ -782,7 +782,7 @@ static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
/*
* If @waiter != NULL, @task has already enqueued the waiter
* into @lock waiter list. If @waiter == NULL then this is a
* into @lock waiter tree. If @waiter == NULL then this is a
* trylock attempt.
*/
if (waiter) {
@ -795,7 +795,7 @@ static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
/*
* We can acquire the lock. Remove the waiter from the
* lock waiters list.
* lock waiters tree.
*/
rt_mutex_dequeue(lock, waiter);
@ -827,7 +827,7 @@ static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
* No waiters. Take the lock without the
* pi_lock dance.@task->pi_blocked_on is NULL
* and we have no waiters to enqueue in @task
* pi waiters list.
* pi waiters tree.
*/
goto takeit;
}
@ -844,7 +844,7 @@ static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
/*
* Finish the lock acquisition. @task is the new owner. If
* other waiters exist we have to insert the highest priority
* waiter into @task->pi_waiters list.
* waiter into @task->pi_waiters tree.
*/
if (rt_mutex_has_waiters(lock))
rt_mutex_enqueue_pi(task, rt_mutex_top_waiter(lock));
@ -955,7 +955,7 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
}
/*
* Remove the top waiter from the current tasks pi waiter list and
* Remove the top waiter from the current tasks pi waiter tree and
* queue it up.
*
* Called with lock->wait_lock held.