Merge branch 'v2.6.24-rc7-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep

* 'v2.6.24-rc7-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep:
  lockdep: more hardirq annotations for notify_die()
  lockdep: fix workqueue creation API lockdep interaction
  lockdep: fix internal double unlock during self-test

2 files changed, 11 insertions, 6 deletions

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 723bd9f92556..4335f12a27c6 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2943,9 +2943,10 @@ void lockdep_free_key_range(void *start, unsigned long size)
 	struct list_head *head;
 	unsigned long flags;
 	int i;
+	int locked;
 
 	raw_local_irq_save(flags);
-	graph_lock();
+	locked = graph_lock();
 
 	/*
 	 * Unhash all classes that were created by this module:
@@ -2959,7 +2960,8 @@ void lockdep_free_key_range(void *start, unsigned long size)
 				zap_class(class);
 	}
 
-	graph_unlock();
+	if (locked)
+		graph_unlock();
 	raw_local_irq_restore(flags);
 }
 
@@ -2969,6 +2971,7 @@ void lockdep_reset_lock(struct lockdep_map *lock)
 	struct list_head *head;
 	unsigned long flags;
 	int i, j;
+	int locked;
 
 	raw_local_irq_save(flags);
 
@@ -2987,7 +2990,7 @@ void lockdep_reset_lock(struct lockdep_map *lock)
 	 * Debug check: in the end all mapped classes should
 	 * be gone.
 	 */
-	graph_lock();
+	locked = graph_lock();
 	for (i = 0; i < CLASSHASH_SIZE; i++) {
 		head = classhash_table + i;
 		if (list_empty(head))
@@ -3000,7 +3003,8 @@ void lockdep_reset_lock(struct lockdep_map *lock)
 			}
 		}
 	}
-	graph_unlock();
+	if (locked)
+		graph_unlock();
 
 out_restore:
 	raw_local_irq_restore(flags);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 52d5e7c9a8e6..8db0b597509e 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -722,7 +722,8 @@ static void start_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
 struct workqueue_struct *__create_workqueue_key(const char *name,
 						int singlethread,
 						int freezeable,
-						struct lock_class_key *key)
+						struct lock_class_key *key,
+						const char *lock_name)
 {
 	struct workqueue_struct *wq;
 	struct cpu_workqueue_struct *cwq;
@@ -739,7 +740,7 @@ struct workqueue_struct *__create_workqueue_key(const char *name,
 	}
 
 	wq->name = name;
-	lockdep_init_map(&wq->lockdep_map, name, key, 0);
+	lockdep_init_map(&wq->lockdep_map, lock_name, key, 0);
 	wq->singlethread = singlethread;
 	wq->freezeable = freezeable;
 	INIT_LIST_HEAD(&wq->list);