diff options
Diffstat (limited to 'kernel/locking/lockdep.c')
-rw-r--r-- | kernel/locking/lockdep.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 2c6d0b67e7b6..753a9b758266 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -2096,7 +2096,7 @@ out_bug: return 0; } -unsigned long nr_lock_chains; +static unsigned long nr_lock_chains; struct lock_chain lock_chains[MAX_LOCKDEP_CHAINS]; int nr_chain_hlocks; static u16 chain_hlocks[MAX_LOCKDEP_CHAIN_HLOCKS]; @@ -2231,6 +2231,20 @@ static int check_no_collision(struct task_struct *curr, } /* + * Given an index that is >= -1, return the index of the next lock chain. + * Return -2 if there is no next lock chain. + */ +long lockdep_next_lockchain(long i) +{ + return i + 1 < nr_lock_chains ? i + 1 : -2; +} + +unsigned long lock_chain_count(void) +{ + return nr_lock_chains; +} + +/* * Adds a dependency chain into chain hashtable. And must be called with * graph_lock held. * |