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authorDale Farnsworth <dale@farnsworth.org>2008-02-25 23:03:02 +0100
committerPeter Zijlstra <a.p.zijlstra@chello.nl>2008-02-25 23:03:02 +0100
commit1481197b50114d7212d659d41cb97f31a8934883 (patch)
treec3ad3133cef46f64d3a6dbb9773591bcf29b87f9 /kernel/lockdep.c
parentbdb9441e9c325d50b5ae17f7d3205d65b8ed2e5f (diff)
downloadop-kernel-dev-1481197b50114d7212d659d41cb97f31a8934883.zip
op-kernel-dev-1481197b50114d7212d659d41cb97f31a8934883.tar.gz
Subject: lockdep: include all lock classes in all_lock_classes
Add each lock class to the all_lock_classes list when it is first registered. Previously, lock classes were added to all_lock_classes when the lock class was first used. Since one of the uses of the list is to find unused locks, this didn't work well. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep.c')
-rw-r--r--kernel/lockdep.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3574379..81a4e4a 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -779,6 +779,10 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
* parallel walking of the hash-list safe:
*/
list_add_tail_rcu(&class->hash_entry, hash_head);
+ /*
+ * Add it to the global list of classes:
+ */
+ list_add_tail_rcu(&class->lock_entry, &all_lock_classes);
if (verbose(class)) {
graph_unlock();
@@ -2282,10 +2286,6 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
return 0;
break;
case LOCK_USED:
- /*
- * Add it to the global list of classes:
- */
- list_add_tail_rcu(&this->class->lock_entry, &all_lock_classes);
debug_atomic_dec(&nr_unused_locks);
break;
default:
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