Since in graph search, multiple matches may be needed, a matched lock
needs to rejoin the search for another match, thereby introduce
mark_lock_unaccessed().
Signed-off-by: Yuyang Du <duyuy...@gmail.com>
---
kernel/locking/lockdep.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 54ddf85..617c0f4 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -1338,6 +1338,15 @@ static inline void mark_lock_accessed(struct lock_list
*lock,
lock->class->dep_gen_id = lockdep_dependency_gen_id;
}
+static inline void mark_lock_unaccessed(struct lock_list *lock)
+{
+ unsigned long nr;
+
+ nr = lock - list_entries;
+ WARN_ON(nr >= ARRAY_SIZE(list_entries)); /* Out-of-bounds, input fail */
+ lock->class->dep_gen_id--;
+}
+
static inline unsigned long lock_accessed(struct lock_list *lock)
{
unsigned long nr;
--
1.8.3.1
