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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>
This commit is contained in:
Dale Farnsworth 2008-02-25 23:03:02 +01:00 committed by Peter Zijlstra
parent bdb9441e9c
commit 1481197b50
1 changed files with 4 additions and 4 deletions
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8
kernel/lockdep.c
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@ -779,6 +779,10 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
* parallel walking of the hash-list safe: * parallel walking of the hash-list safe:
*/ */
list_add_tail_rcu(&class->hash_entry, hash_head); 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)) { if (verbose(class)) {
graph_unlock(); graph_unlock();
@ -2282,10 +2286,6 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
return 0; return 0;
break; break;
case LOCK_USED: 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); debug_atomic_dec(&nr_unused_locks);
break; break;
default: default: