16 void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name,  in __raw_spin_lock_init()  argument
23 	debug_check_no_locks_freed((void *)lock, sizeof(*lock));  in __raw_spin_lock_init()
24 	lockdep_init_map(&lock->dep_map, name, key, 0);  in __raw_spin_lock_init()
26 	lock->raw_lock = (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED;  in __raw_spin_lock_init()
27 	lock->magic = SPINLOCK_MAGIC;  in __raw_spin_lock_init()
28 	lock->owner = SPINLOCK_OWNER_INIT;  in __raw_spin_lock_init()
29 	lock->owner_cpu = -1;  in __raw_spin_lock_init()
34 void __rwlock_init(rwlock_t *lock, const char *name,  in __rwlock_init()  argument
41 	debug_check_no_locks_freed((void *)lock, sizeof(*lock));  in __rwlock_init()
42 	lockdep_init_map(&lock->dep_map, name, key, 0);  in __rwlock_init()
44 	lock->raw_lock = (arch_rwlock_t) __ARCH_RW_LOCK_UNLOCKED;  in __rwlock_init()
45 	lock->magic = RWLOCK_MAGIC;  in __rwlock_init()
46 	lock->owner = SPINLOCK_OWNER_INIT;  in __rwlock_init()
47 	lock->owner_cpu = -1;  in __rwlock_init()
52 static void spin_dump(raw_spinlock_t *lock, const char *msg)  in spin_dump()  argument
56 	if (lock->owner && lock->owner != SPINLOCK_OWNER_INIT)  in spin_dump()
57 		owner = lock->owner;  in spin_dump()
63 		lock, lock->magic,  in spin_dump()
66 		lock->owner_cpu);  in spin_dump()
70 static void spin_bug(raw_spinlock_t *lock, const char *msg)  in spin_bug()  argument
75 	spin_dump(lock, msg);  in spin_bug()
78 #define SPIN_BUG_ON(cond, lock, msg) if (unlikely(cond)) spin_bug(lock, msg)  argument
81 debug_spin_lock_before(raw_spinlock_t *lock)  in debug_spin_lock_before()  argument
83 	SPIN_BUG_ON(lock->magic != SPINLOCK_MAGIC, lock, "bad magic");  in debug_spin_lock_before()
84 	SPIN_BUG_ON(lock->owner == current, lock, "recursion");  in debug_spin_lock_before()
85 	SPIN_BUG_ON(lock->owner_cpu == raw_smp_processor_id(),  in debug_spin_lock_before()
86 							lock, "cpu recursion");  in debug_spin_lock_before()
89 static inline void debug_spin_lock_after(raw_spinlock_t *lock)  in debug_spin_lock_after()  argument
91 	lock->owner_cpu = raw_smp_processor_id();  in debug_spin_lock_after()
92 	lock->owner = current;  in debug_spin_lock_after()
95 static inline void debug_spin_unlock(raw_spinlock_t *lock)  in debug_spin_unlock()  argument
97 	SPIN_BUG_ON(lock->magic != SPINLOCK_MAGIC, lock, "bad magic");  in debug_spin_unlock()
98 	SPIN_BUG_ON(!raw_spin_is_locked(lock), lock, "already unlocked");  in debug_spin_unlock()
99 	SPIN_BUG_ON(lock->owner != current, lock, "wrong owner");  in debug_spin_unlock()
100 	SPIN_BUG_ON(lock->owner_cpu != raw_smp_processor_id(),  in debug_spin_unlock()
101 							lock, "wrong CPU");  in debug_spin_unlock()
102 	lock->owner = SPINLOCK_OWNER_INIT;  in debug_spin_unlock()
103 	lock->owner_cpu = -1;  in debug_spin_unlock()
106 static void __spin_lock_debug(raw_spinlock_t *lock)  in __spin_lock_debug()  argument
112 		if (arch_spin_trylock(&lock->raw_lock))  in __spin_lock_debug()
117 	spin_dump(lock, "lockup suspected");  in __spin_lock_debug()
130 	arch_spin_lock(&lock->raw_lock);  in __spin_lock_debug()
133 void do_raw_spin_lock(raw_spinlock_t *lock)  in do_raw_spin_lock()  argument
135 	debug_spin_lock_before(lock);  in do_raw_spin_lock()
136 	if (unlikely(!arch_spin_trylock(&lock->raw_lock)))  in do_raw_spin_lock()
137 		__spin_lock_debug(lock);  in do_raw_spin_lock()
138 	debug_spin_lock_after(lock);  in do_raw_spin_lock()
141 int do_raw_spin_trylock(raw_spinlock_t *lock)  in do_raw_spin_trylock()  argument
143 	int ret = arch_spin_trylock(&lock->raw_lock);  in do_raw_spin_trylock()
146 		debug_spin_lock_after(lock);  in do_raw_spin_trylock()
151 	SPIN_BUG_ON(!ret, lock, "trylock failure on UP");  in do_raw_spin_trylock()
156 void do_raw_spin_unlock(raw_spinlock_t *lock)  in do_raw_spin_unlock()  argument
158 	debug_spin_unlock(lock);  in do_raw_spin_unlock()
159 	arch_spin_unlock(&lock->raw_lock);  in do_raw_spin_unlock()
162 static void rwlock_bug(rwlock_t *lock, const char *msg)  in rwlock_bug()  argument
169 		task_pid_nr(current), lock);  in rwlock_bug()
173 #define RWLOCK_BUG_ON(cond, lock, msg) if (unlikely(cond)) rwlock_bug(lock, msg)  argument
176 static void __read_lock_debug(rwlock_t *lock)
184 			if (arch_read_trylock(&lock->raw_lock))
194 				current->pid, lock);
201 void do_raw_read_lock(rwlock_t *lock)  in do_raw_read_lock()  argument
203 	RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");  in do_raw_read_lock()
204 	arch_read_lock(&lock->raw_lock);  in do_raw_read_lock()
207 int do_raw_read_trylock(rwlock_t *lock)  in do_raw_read_trylock()  argument
209 	int ret = arch_read_trylock(&lock->raw_lock);  in do_raw_read_trylock()
215 	RWLOCK_BUG_ON(!ret, lock, "trylock failure on UP");  in do_raw_read_trylock()
220 void do_raw_read_unlock(rwlock_t *lock)  in do_raw_read_unlock()  argument
222 	RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");  in do_raw_read_unlock()
223 	arch_read_unlock(&lock->raw_lock);  in do_raw_read_unlock()
226 static inline void debug_write_lock_before(rwlock_t *lock)  in debug_write_lock_before()  argument
228 	RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");  in debug_write_lock_before()
229 	RWLOCK_BUG_ON(lock->owner == current, lock, "recursion");  in debug_write_lock_before()
230 	RWLOCK_BUG_ON(lock->owner_cpu == raw_smp_processor_id(),  in debug_write_lock_before()
231 							lock, "cpu recursion");  in debug_write_lock_before()
234 static inline void debug_write_lock_after(rwlock_t *lock)  in debug_write_lock_after()  argument
236 	lock->owner_cpu = raw_smp_processor_id();  in debug_write_lock_after()
237 	lock->owner = current;  in debug_write_lock_after()
240 static inline void debug_write_unlock(rwlock_t *lock)  in debug_write_unlock()  argument
242 	RWLOCK_BUG_ON(lock->magic != RWLOCK_MAGIC, lock, "bad magic");  in debug_write_unlock()
243 	RWLOCK_BUG_ON(lock->owner != current, lock, "wrong owner");  in debug_write_unlock()
244 	RWLOCK_BUG_ON(lock->owner_cpu != raw_smp_processor_id(),  in debug_write_unlock()
245 							lock, "wrong CPU");  in debug_write_unlock()
246 	lock->owner = SPINLOCK_OWNER_INIT;  in debug_write_unlock()
247 	lock->owner_cpu = -1;  in debug_write_unlock()
251 static void __write_lock_debug(rwlock_t *lock)
259 			if (arch_write_trylock(&lock->raw_lock))
269 				current->pid, lock);
276 void do_raw_write_lock(rwlock_t *lock)  in do_raw_write_lock()  argument
278 	debug_write_lock_before(lock);  in do_raw_write_lock()
279 	arch_write_lock(&lock->raw_lock);  in do_raw_write_lock()
280 	debug_write_lock_after(lock);  in do_raw_write_lock()
283 int do_raw_write_trylock(rwlock_t *lock)  in do_raw_write_trylock()  argument
285 	int ret = arch_write_trylock(&lock->raw_lock);  in do_raw_write_trylock()
288 		debug_write_lock_after(lock);  in do_raw_write_trylock()
293 	RWLOCK_BUG_ON(!ret, lock, "trylock failure on UP");  in do_raw_write_trylock()
298 void do_raw_write_unlock(rwlock_t *lock)  in do_raw_write_unlock()  argument
300 	debug_write_unlock(lock);  in do_raw_write_unlock()
301 	arch_write_unlock(&lock->raw_lock);  in do_raw_write_unlock()