linux-kernel - [PATCH 3/4] locking/rtmutex: Update stale plist comments

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Date:	Tue, 19 May 2015 10:24:57 -0700
From:	Davidlohr Bueso <dave@...olabs.net>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Davidlohr Bueso <dave@...olabs.net>,
	linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: [PATCH 3/4] locking/rtmutex: Update stale plist comments

... as of fb00aca4744 (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@...e.de>
---
 kernel/locking/rtmutex.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 1d5cc9d..81aad32 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -626,7 +626,7 @@ 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);
@@ -664,7 +664,7 @@ 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);
@@ -675,7 +675,7 @@ 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
@@ -749,7 +749,7 @@ 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,
@@ -784,7 +784,7 @@ 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) {
@@ -797,7 +797,7 @@ 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);
 
@@ -829,7 +829,7 @@ 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.@...k->pi_blocked_on is NULL
 			 * and we have no waiters to enqueue in @task
-			 * pi waiters list.
+			 * pi waiters tree.
 			 */
 			goto takeit;
 		}
@@ -846,7 +846,7 @@ 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));
@@ -957,7 +957,7 @@ 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.
-- 
2.1.4

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