[PATCH] lockdep: increase max allowed recursion depth

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / lockdep.c

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 805a322a56557f01b031e7905c43686cdb49a83e..d1a3b2cfe4a96c613c05217d8d09e946cba0ae99 100644 (file)
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -575,6 +575,8 @@ static noinline int print_circular_bug_tail(void)
        return 0;
 }
 
+#define RECURSION_LIMIT 40
+
 static int noinline print_infinite_recursion_bug(void)
 {
        __raw_spin_unlock(&hash_lock);
@@ -595,7 +597,7 @@ check_noncircular(struct lock_class *source, unsigned int depth)
        debug_atomic_inc(&nr_cyclic_check_recursions);
        if (depth > max_recursion_depth)
                max_recursion_depth = depth;
-       if (depth >= 20)
+       if (depth >= RECURSION_LIMIT)
                return print_infinite_recursion_bug();
        /*
         * Check this lock's dependency list:
@@ -645,7 +647,7 @@ find_usage_forwards(struct lock_class *source, unsigned int depth)
 
        if (depth > max_recursion_depth)
                max_recursion_depth = depth;
-       if (depth >= 20)
+       if (depth >= RECURSION_LIMIT)
                return print_infinite_recursion_bug();
 
        debug_atomic_inc(&nr_find_usage_forwards_checks);
@@ -684,7 +686,7 @@ find_usage_backwards(struct lock_class *source, unsigned int depth)
 
        if (depth > max_recursion_depth)
                max_recursion_depth = depth;
-       if (depth >= 20)
+       if (depth >= RECURSION_LIMIT)
                return print_infinite_recursion_bug();
 
        debug_atomic_inc(&nr_find_usage_backwards_checks);