diff options
Diffstat (limited to 'kernel/locking/lockdep.c')
| -rw-r--r-- | kernel/locking/lockdep.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 95932333a48b..824b4c2136fa 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4379,6 +4379,24 @@ void debug_check_no_locks_held(void) } EXPORT_SYMBOL_GPL(debug_check_no_locks_held); +void debug_check_lock_not_held(struct lock_class_key *key) +{ + struct task_struct *p = current; + struct lock_class *class; + unsigned i, j; + + for (i = 0; i < p->lockdep_depth; i++) { + class = hlock_class(p->held_locks + i); + + for (j = 0; j < MAX_LOCKDEP_SUBCLASSES; j++) + if (&key->subkeys[j] == class->key) { + lockdep_print_held_locks(p); + panic("holding lock we shouldn't be\n"); + } + } +} +EXPORT_SYMBOL_GPL(debug_check_lock_not_held); + #ifdef __KERNEL__ void debug_show_all_locks(void) { |