summaryrefslogtreecommitdiffstats
path: root/kernel/lockdep.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/lockdep.c')
-rw-r--r--kernel/lockdep.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 6358cf7e84b2..744da6265d99 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -929,7 +929,7 @@ static int add_lock_to_list(struct lock_class *class, struct lock_class *this,
unsigned long bfs_accessed[BITS_TO_LONGS(MAX_LOCKDEP_ENTRIES)];
static struct circular_queue lock_cq;
-
+unsigned int max_bfs_queue_depth;
static int __bfs(struct lock_list *source_entry,
void *data,
int (*match)(struct lock_list *entry, void *data),
@@ -975,6 +975,7 @@ static int __bfs(struct lock_list *source_entry,
list_for_each_entry(entry, head, entry) {
if (!lock_accessed(entry)) {
+ unsigned int cq_depth;
mark_lock_accessed(entry, lock);
if (match(entry, data)) {
*target_entry = entry;
@@ -986,6 +987,9 @@ static int __bfs(struct lock_list *source_entry,
ret = -1;
goto exit;
}
+ cq_depth = __cq_get_elem_count(cq);
+ if (max_bfs_queue_depth < cq_depth)
+ max_bfs_queue_depth = cq_depth;
}
}
}