diff options
Diffstat (limited to 'kernel/locking/lockdep_internals.h')
| -rw-r--r-- | kernel/locking/lockdep_internals.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/locking/lockdep_internals.h b/kernel/locking/lockdep_internals.h index d459d624ba2a..88c847a41c8a 100644 --- a/kernel/locking/lockdep_internals.h +++ b/kernel/locking/lockdep_internals.h @@ -152,9 +152,15 @@ struct lockdep_stats { int nr_find_usage_forwards_recursions; int nr_find_usage_backwards_checks; int nr_find_usage_backwards_recursions; + + /* + * Per lock class locking operation stat counts + */ + unsigned long lock_class_ops[MAX_LOCKDEP_KEYS]; }; DECLARE_PER_CPU(struct lockdep_stats, lockdep_stats); +extern struct lock_class lock_classes[MAX_LOCKDEP_KEYS]; #define __debug_atomic_inc(ptr) \ this_cpu_inc(lockdep_stats.ptr); @@ -179,9 +185,30 @@ DECLARE_PER_CPU(struct lockdep_stats, lockdep_stats); } \ __total; \ }) + +static inline void debug_class_ops_inc(struct lock_class *class) +{ + int idx; + + idx = class - lock_classes; + __debug_atomic_inc(lock_class_ops[idx]); +} + +static inline unsigned long debug_class_ops_read(struct lock_class *class) +{ + int idx, cpu; + unsigned long ops = 0; + + idx = class - lock_classes; + for_each_possible_cpu(cpu) + ops += per_cpu(lockdep_stats.lock_class_ops[idx], cpu); + return ops; +} + #else # define __debug_atomic_inc(ptr) do { } while (0) # define debug_atomic_inc(ptr) do { } while (0) # define debug_atomic_dec(ptr) do { } while (0) # define debug_atomic_read(ptr) 0 +# define debug_class_ops_inc(ptr) do { } while (0) #endif |