| 28,6 → 28,17 |
|---|
| #define MAX_LOCKDEP_SUBCLASSES 8UL |
| |
| /* |
| * NR_LOCKDEP_CACHING_CLASSES ... Number of classes |
| * cached in the instance of lockdep_map |
| * |
| * Currently main class (subclass == 0) and signle depth subclass |
| * are cached in lockdep_map. This optimization is mainly targeting |
| * on rq->lock. double_rq_lock() acquires this highly competitive with |
| * single depth. |
| */ |
| #define NR_LOCKDEP_CACHING_CLASSES 2 |
| |
| /* |
| * Lock-classes are keyed via unique addresses, by embedding the |
| * lockclass-key into the kernel (or module) .data section. (For |
| * static locks we use the lock address itself as the key.) |
| 132,7 → 143,7 |
|---|
| */ |
| struct lockdep_map { |
| struct lock_class_key *key; |
| struct lock_class *class_cache; |
| struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; |
| const char *name; |
| #ifdef CONFIG_LOCK_STAT |
| int cpu; |
| 266,6 → 277,9 |
|---|
| #define lockdep_set_subclass(lock, sub) \ |
| lockdep_init_map(&(lock)->dep_map, #lock, \ |
| (lock)->dep_map.key, sub) |
| |
| #define lockdep_set_novalidate_class(lock) \ |
| lockdep_set_class(lock, &__lockdep_no_validate__) |
| /* |
| * Compare locking classes |
| */ |
| 350,6 → 364,9 |
|---|
| #define lockdep_set_class_and_subclass(lock, key, sub) \ |
| do { (void)(key); } while (0) |
| #define lockdep_set_subclass(lock, sub) do { } while (0) |
| |
| #define lockdep_set_novalidate_class(lock) do { } while (0) |
| |
| /* |
| * We don't define lockdep_match_class() and lockdep_match_key() for !LOCKDEP |
| * case since the result is not well defined and the caller should rather |
| 412,14 → 429,6 |
|---|
| |
| #endif /* CONFIG_LOCKDEP */ |
| |
| #ifdef CONFIG_GENERIC_HARDIRQS |
| extern void early_init_irq_lock_class(void); |
| #else |
| static inline void early_init_irq_lock_class(void) |
| { |
| } |
| #endif |
| |
| #ifdef CONFIG_TRACE_IRQFLAGS |
| extern void early_boot_irqs_off(void); |
| extern void early_boot_irqs_on(void); |
| 534,4 → 543,8 |
|---|
| # define might_lock_read(lock) do { } while (0) |
| #endif |
| |
| #ifdef CONFIG_PROVE_RCU |
| extern void lockdep_rcu_dereference(const char *file, const int line); |
| #endif |
| |
| #endif /* __LINUX_LOCKDEP_H */ |