/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LIBLOCKDEP_COMMON_H #define _LIBLOCKDEP_COMMON_H #include <pthread.h> #define NR_LOCKDEP_CACHING_CLASSES 2 #define MAX_LOCKDEP_SUBCLASSES 8UL #ifndef CALLER_ADDR0 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) #endif #ifndef _RET_IP_ #define _RET_IP_ CALLER_ADDR0 #endif #ifndef _THIS_IP_ #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) #endif struct lockdep_subclass_key { char __one_byte; }; struct lock_class_key { struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES]; }; struct lockdep_map { struct lock_class_key *key; struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; const char *name; #ifdef CONFIG_LOCK_STAT int cpu; unsigned long ip; #endif }; void lockdep_init_map(struct lockdep_map *lock, const char *name, struct lock_class_key *key, int subclass); void lock_acquire(struct lockdep_map *lock, unsigned int subclass, int trylock, int read, int check, struct lockdep_map *nest_lock, unsigned long ip); void lock_release(struct lockdep_map *lock, unsigned long ip); void lockdep_reset_lock(struct lockdep_map *lock); void lockdep_register_key(struct lock_class_key *key); void lockdep_unregister_key(struct lock_class_key *key); extern void debug_check_no_locks_freed(const void *from, unsigned long len); #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \ { .name = (_name), .key = (void *)(_key), } #endif