| /* 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, int nested, |
| unsigned long ip); |
| void lockdep_reset_lock(struct lockdep_map *lock); |
| 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 |