1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _LIBLOCKDEP_COMMON_H 3*4882a593Smuzhiyun #define _LIBLOCKDEP_COMMON_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <pthread.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define NR_LOCKDEP_CACHING_CLASSES 2 8*4882a593Smuzhiyun #define MAX_LOCKDEP_SUBCLASSES 8UL 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef CALLER_ADDR0 11*4882a593Smuzhiyun #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) 12*4882a593Smuzhiyun #endif 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #ifndef _RET_IP_ 15*4882a593Smuzhiyun #define _RET_IP_ CALLER_ADDR0 16*4882a593Smuzhiyun #endif 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #ifndef _THIS_IP_ 19*4882a593Smuzhiyun #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) 20*4882a593Smuzhiyun #endif 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct lockdep_subclass_key { 23*4882a593Smuzhiyun char __one_byte; 24*4882a593Smuzhiyun }; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun struct lock_class_key { 27*4882a593Smuzhiyun struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES]; 28*4882a593Smuzhiyun }; 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun struct lockdep_map { 31*4882a593Smuzhiyun struct lock_class_key *key; 32*4882a593Smuzhiyun struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; 33*4882a593Smuzhiyun const char *name; 34*4882a593Smuzhiyun #ifdef CONFIG_LOCK_STAT 35*4882a593Smuzhiyun int cpu; 36*4882a593Smuzhiyun unsigned long ip; 37*4882a593Smuzhiyun #endif 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun void lockdep_init_map(struct lockdep_map *lock, const char *name, 41*4882a593Smuzhiyun struct lock_class_key *key, int subclass); 42*4882a593Smuzhiyun void lock_acquire(struct lockdep_map *lock, unsigned int subclass, 43*4882a593Smuzhiyun int trylock, int read, int check, 44*4882a593Smuzhiyun struct lockdep_map *nest_lock, unsigned long ip); 45*4882a593Smuzhiyun void lock_release(struct lockdep_map *lock, unsigned long ip); 46*4882a593Smuzhiyun void lockdep_reset_lock(struct lockdep_map *lock); 47*4882a593Smuzhiyun void lockdep_register_key(struct lock_class_key *key); 48*4882a593Smuzhiyun void lockdep_unregister_key(struct lock_class_key *key); 49*4882a593Smuzhiyun extern void debug_check_no_locks_freed(const void *from, unsigned long len); 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \ 52*4882a593Smuzhiyun { .name = (_name), .key = (void *)(_key), } 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #endif 55