/* * kernel/lockdep_internals.h * * Runtime locking correctness validator * * lockdep subsystem internal functions and variables. */ /* * MAX_LOCKDEP_ENTRIES is the maximum number of lock dependencies * we track. * * We use the per-lock dependency maps in two ways: we grow it by adding * every to-be-taken lock to all currently held lock's own dependency * table (if it's not there yet), and we check it for lock order * conflicts and deadlocks. */#define MAX_LOCKDEP_ENTRIES	8192UL #define MAX_LOCKDEP_KEYS_BITS	11#define MAX_LOCKDEP_KEYS	(1UL << MAX_LOCKDEP_KEYS_BITS) #define MAX_LOCKDEP_CHAINS_BITS	14#define MAX_LOCKDEP_CHAINS	(1UL << MAX_LOCKDEP_CHAINS_BITS) /* * Stack-trace: tightly packed array of stack backtrace * addresses. Protected by the hash_lock. */#define MAX_STACK_TRACE_ENTRIES	262144UL extern struct list_head all_lock_classes; extern voidget_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, char *c4); extern const char * __get_key_name(struct lockdep_subclass_key *key, char *str); extern unsigned long nr_lock_classes;extern unsigned long nr_list_entries;extern unsigned long nr_lock_chains;extern unsigned long nr_stack_trace_entries; extern unsigned int nr_hardirq_chains;extern unsigned int nr_softirq_chains;extern unsigned int nr_process_chains;extern unsigned int max_lockdep_depth;extern unsigned int max_recursion_depth; #ifdef CONFIG_DEBUG_LOCKDEP/* * Various lockdep statistics: */extern atomic_t chain_lookup_hits;extern atomic_t chain_lookup_misses;extern atomic_t hardirqs_on_events;extern atomic_t hardirqs_off_events;extern atomic_t redundant_hardirqs_on;extern atomic_t redundant_hardirqs_off;extern atomic_t softirqs_on_events;extern atomic_t softirqs_off_events;extern atomic_t redundant_softirqs_on;extern atomic_t redundant_softirqs_off;extern atomic_t nr_unused_locks;extern atomic_t nr_cyclic_checks;extern atomic_t nr_cyclic_check_recursions;extern atomic_t nr_find_usage_forwards_checks;extern atomic_t nr_find_usage_forwards_recursions;extern atomic_t nr_find_usage_backwards_checks;extern atomic_t nr_find_usage_backwards_recursions;# define debug_atomic_inc(ptr)		atomic_inc(ptr)# define debug_atomic_dec(ptr)		atomic_dec(ptr)# define debug_atomic_read(ptr)		atomic_read(ptr)#else# define debug_atomic_inc(ptr)		do { } while (0)# define debug_atomic_dec(ptr)		do { } while (0)# define debug_atomic_read(ptr)		0#endif