Searched refs:sem (Results 1 – 5 of 5) sorted by relevance
| /kernel/locking/ |
| D | rwsem-spinlock.c | 23 int rwsem_is_locked(struct rw_semaphore *sem) in rwsem_is_locked() argument
28 if (raw_spin_trylock_irqsave(&sem->wait_lock, flags)) { in rwsem_is_locked()
29 ret = (sem->count != 0); in rwsem_is_locked()
30 raw_spin_unlock_irqrestore(&sem->wait_lock, flags); in rwsem_is_locked()
39 void __init_rwsem(struct rw_semaphore *sem, const char *name, in __init_rwsem() argument
46 debug_check_no_locks_freed((void *)sem, sizeof(*sem)); in __init_rwsem()
47 lockdep_init_map(&sem->dep_map, name, key, 0); in __init_rwsem()
49 sem->count = 0; in __init_rwsem()
50 raw_spin_lock_init(&sem->wait_lock); in __init_rwsem()
51 INIT_LIST_HEAD(&sem->wait_list); in __init_rwsem()
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| D | rwsem-xadd.c | 72 void __init_rwsem(struct rw_semaphore *sem, const char *name, in __init_rwsem() argument
79 debug_check_no_locks_freed((void *)sem, sizeof(*sem)); in __init_rwsem()
80 lockdep_init_map(&sem->dep_map, name, key, 0); in __init_rwsem()
82 sem->count = RWSEM_UNLOCKED_VALUE; in __init_rwsem()
83 raw_spin_lock_init(&sem->wait_lock); in __init_rwsem()
84 INIT_LIST_HEAD(&sem->wait_list); in __init_rwsem()
86 sem->owner = NULL; in __init_rwsem()
87 osq_lock_init(&sem->osq); in __init_rwsem()
121 __rwsem_do_wake(struct rw_semaphore *sem, enum rwsem_wake_type wake_type) in __rwsem_do_wake() argument
128 waiter = list_entry(sem->wait_list.next, struct rwsem_waiter, list); in __rwsem_do_wake()
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| D | semaphore.c | 36 static noinline void __down(struct semaphore *sem);
37 static noinline int __down_interruptible(struct semaphore *sem);
38 static noinline int __down_killable(struct semaphore *sem);
39 static noinline int __down_timeout(struct semaphore *sem, long timeout);
40 static noinline void __up(struct semaphore *sem);
53 void down(struct semaphore *sem) in down() argument
57 raw_spin_lock_irqsave(&sem->lock, flags); in down()
58 if (likely(sem->count > 0)) in down()
59 sem->count--; in down()
61 __down(sem); in down()
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| D | rwsem.c | 16 static inline void rwsem_set_owner(struct rw_semaphore *sem) in rwsem_set_owner() argument
18 sem->owner = current; in rwsem_set_owner()
21 static inline void rwsem_clear_owner(struct rw_semaphore *sem) in rwsem_clear_owner() argument
23 sem->owner = NULL; in rwsem_clear_owner()
27 static inline void rwsem_set_owner(struct rw_semaphore *sem) in rwsem_set_owner() argument
31 static inline void rwsem_clear_owner(struct rw_semaphore *sem) in rwsem_clear_owner() argument
39 void __sched down_read(struct rw_semaphore *sem) in down_read() argument
42 rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_); in down_read()
44 LOCK_CONTENDED(sem, __down_read_trylock, __down_read); in down_read()
52 int down_read_trylock(struct rw_semaphore *sem) in down_read_trylock() argument
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| /kernel/ |
| D | taskstats.c | 68 struct rw_semaphore sem; member
144 down_read(&listeners->sem); in send_cpu_listeners()
159 up_read(&listeners->sem); in send_cpu_listeners()
168 down_write(&listeners->sem); in send_cpu_listeners()
175 up_write(&listeners->sem); in send_cpu_listeners()
316 down_write(&listeners->sem); in add_del_listener()
324 up_write(&listeners->sem); in add_del_listener()
334 down_write(&listeners->sem); in add_del_listener()
342 up_write(&listeners->sem); in add_del_listener()
698 init_rwsem(&(per_cpu(listener_array, i).sem)); in taskstats_init_early()
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