| /linux/drivers/acpi/acpica/ |
| H A D | exmutex.c | 37 struct acpi_thread_state *thread = obj_desc->mutex.owner_thread; in acpi_ex_unlink_mutex()
45 if (obj_desc->mutex.next) { in acpi_ex_unlink_mutex()
46 (obj_desc->mutex.next)->mutex.prev = obj_desc->mutex.prev; in acpi_ex_unlink_mutex()
49 if (obj_desc->mutex.prev) { in acpi_ex_unlink_mutex()
50 (obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next; in acpi_ex_unlink_mutex()
58 (obj_desc->mutex.prev)->mutex.original_sync_level = in acpi_ex_unlink_mutex()
59 obj_desc->mutex.original_sync_level; in acpi_ex_unlink_mutex()
61 thread->acquired_mutex_list = obj_desc->mutex.next; in acpi_ex_unlink_mutex()
88 obj_desc->mutex.prev = NULL; in acpi_ex_link_mutex()
89 obj_desc->mutex.next = list_head; in acpi_ex_link_mutex()
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| H A D | dsmethod.c | 263 status = acpi_os_create_mutex(&mutex_desc->mutex.os_mutex); in acpi_ds_create_method_mutex()
269 mutex_desc->mutex.sync_level = method_desc->method.sync_level; in acpi_ds_create_method_mutex()
270 method_desc->method.mutex = mutex_desc; in acpi_ds_create_method_mutex()
323 if (!obj_desc->method.mutex) { in acpi_ds_begin_method_execution()
345 obj_desc->method.mutex->mutex.sync_level)) { in acpi_ds_begin_method_execution()
360 !obj_desc->method.mutex->mutex.thread_id || in acpi_ds_begin_method_execution()
362 obj_desc->method.mutex->mutex.thread_id)) { in acpi_ds_begin_method_execution()
368 acpi_ex_system_wait_mutex(obj_desc->method.mutex-> in acpi_ds_begin_method_execution()
369 mutex.os_mutex, in acpi_ds_begin_method_execution()
378 obj_desc->method.mutex->mutex. in acpi_ds_begin_method_execution()
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| /linux/drivers/net/ethernet/netronome/nfp/nfpcore/ |
| H A D | nfp_mutex.c | 128 struct nfp_cpp_mutex *mutex; in nfp_cpp_mutex_alloc() local
143 mutex = kzalloc(sizeof(*mutex), GFP_KERNEL); in nfp_cpp_mutex_alloc()
144 if (!mutex) in nfp_cpp_mutex_alloc()
147 mutex->cpp = cpp; in nfp_cpp_mutex_alloc()
148 mutex->target = target; in nfp_cpp_mutex_alloc()
149 mutex->address = address; in nfp_cpp_mutex_alloc()
150 mutex->key = key; in nfp_cpp_mutex_alloc()
151 mutex->depth = 0; in nfp_cpp_mutex_alloc()
153 return mutex; in nfp_cpp_mutex_alloc()
160 void nfp_cpp_mutex_free(struct nfp_cpp_mutex *mutex) in nfp_cpp_mutex_free() argument
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| /linux/include/linux/ |
| H A D | mutex.h | 42 extern void mutex_destroy(struct mutex *lock);
48 static inline void mutex_destroy(struct mutex *lock) {} in mutex_destroy()
60 #define mutex_init(mutex) \ argument
64 __mutex_init((mutex), #mutex, &__key); \
76 #define mutex_init_with_key(mutex, key) __mutex_init((mutex), #mutex, (key)) argument
87 struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
89 extern void __mutex_init(struct mutex *lock, const char *name,
98 extern bool mutex_is_locked(struct mutex *lock);
112 struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
114 extern void __mutex_rt_init(struct mutex *lock, const char *name,
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| /linux/drivers/gpu/drm/amd/pm/ |
| H A D | amdgpu_dpm.c | 49 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_get_sclk()
52 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_get_sclk()
65 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_get_mclk()
68 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_get_mclk()
90 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_set_powergating_by_smu()
118 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_set_powergating_by_smu()
128 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_set_gfx_power_up_by_imu()
130 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_set_gfx_power_up_by_imu()
146 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_baco_enter()
151 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_baco_enter()
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| /linux/drivers/soc/mediatek/ |
| H A D | mtk-mutex.c | 41 #define DISP_REG_MUTEX_MOD(mutex, id, n) ({ \ argument
42 const typeof(mutex) _mutex = (mutex); \
365 struct mtk_mutex mutex[MTK_MUTEX_MAX_HANDLES]; member
854 if (!mtx->mutex[i].claimed) { in mtk_mutex_get()
855 mtx->mutex[i].claimed = true; in mtk_mutex_get()
856 return &mtx->mutex[i]; in mtk_mutex_get()
863 void mtk_mutex_put(struct mtk_mutex *mutex) in mtk_mutex_put() argument
865 struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx, in mtk_mutex_put()
866 mutex[mutex->id]); in mtk_mutex_put()
868 WARN_ON(&mtx->mutex[mutex->id] != mutex); in mtk_mutex_put()
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| /linux/drivers/misc/ |
| H A D | ntsync.c | 64 } mutex; member
132 struct mutex wait_all_lock;
238 if (obj->u.mutex.owner && obj->u.mutex.owner != owner) in is_signaled()
240 return obj->u.mutex.count < UINT_MAX; in is_signaled()
287 if (obj->u.mutex.ownerdead) in try_wake_all()
289 obj->u.mutex.ownerdead = false; in try_wake_all()
290 obj->u.mutex.count++; in try_wake_all()
291 obj->u.mutex.owner = q->owner; in try_wake_all()
340 static void try_wake_any_mutex(struct ntsync_obj *mutex) in try_wake_any_mutex() argument
344 ntsync_assert_held(mutex); in try_wake_any_mutex()
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| /linux/Documentation/translations/zh_CN/locking/ |
| H A D | mutex-design.rst | 4 :Original: Documentation/locking/mutex-design.rst
25 在Linux内核中，互斥锁（mutex）指的是一个特殊的加锁原语，它在共享内存系统上
36 互斥锁由“struct mutex”表示，在include/linux/mutex.h中定义，并在
37 kernel/locking/mutex.c中实现。这些锁使用一个原子变量（->owner）来跟踪
107 mutex_init(mutex);
111 void mutex_lock(struct mutex *lock);
112 void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
113 int mutex_trylock(struct mutex *lock);
117 int mutex_lock_interruptible_nested(struct mutex *lock,
119 int mutex_lock_interruptible(struct mutex *lock);
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| /linux/kernel/locking/ |
| H A D | mutex.c | 47 __mutex_init(struct mutex *lock, const char *name, struct lock_class_key *key) in __mutex_init()
65 bool mutex_is_locked(struct mutex *lock) in mutex_is_locked()
77 unsigned long mutex_get_owner(struct mutex *lock) in mutex_get_owner()
87 static inline struct task_struct *__mutex_trylock_common(struct mutex *lock, bool handoff) in __mutex_trylock_common()
126 static inline bool __mutex_trylock_or_handoff(struct mutex *lock, bool handoff) in __mutex_trylock_or_handoff()
134 static inline bool __mutex_trylock(struct mutex *lock) in __mutex_trylock()
150 static __always_inline bool __mutex_trylock_fast(struct mutex *lock) in __mutex_trylock_fast()
163 static __always_inline bool __mutex_unlock_fast(struct mutex *lock) in __mutex_unlock_fast()
171 static inline void __mutex_set_flag(struct mutex *lock, unsigned long flag) in __mutex_set_flag()
176 static inline void __mutex_clear_flag(struct mutex *lock, unsigned long flag) in __mutex_clear_flag()
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| /linux/drivers/media/i2c/ |
| H A D | tw9900.c | 83 struct mutex mutex; member
193 mutex_lock(&tw9900->mutex); in tw9900_get_fmt()
195 mutex_unlock(&tw9900->mutex); in tw9900_get_fmt()
207 mutex_lock(&tw9900->mutex); in tw9900_set_fmt()
210 mutex_unlock(&tw9900->mutex); in tw9900_set_fmt()
216 mutex_unlock(&tw9900->mutex); in tw9900_set_fmt()
265 mutex_lock(&tw9900->mutex); in tw9900_s_stream()
268 mutex_unlock(&tw9900->mutex); in tw9900_s_stream()
272 mutex_unlock(&tw9900->mutex); in tw9900_s_stream()
279 mutex_lock(&tw9900->mutex); in tw9900_s_stream()
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| /linux/include/linux/soc/mediatek/ |
| H A D | mtk-mutex.h | 71 int mtk_mutex_prepare(struct mtk_mutex *mutex);
72 void mtk_mutex_add_comp(struct mtk_mutex *mutex,
74 void mtk_mutex_enable(struct mtk_mutex *mutex);
75 int mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex,
77 void mtk_mutex_disable(struct mtk_mutex *mutex);
78 void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
80 void mtk_mutex_unprepare(struct mtk_mutex *mutex);
81 void mtk_mutex_put(struct mtk_mutex *mutex);
82 void mtk_mutex_acquire(struct mtk_mutex *mutex);
83 void mtk_mutex_release(struct mtk_mutex *mutex);
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| /linux/drivers/vhost/ |
| H A D | test.c | 51 mutex_lock(&vq->mutex); in handle_vq()
54 mutex_unlock(&vq->mutex); in handle_vq()
93 mutex_unlock(&vq->mutex); in handle_vq()
135 mutex_lock(&vq->mutex); in vhost_test_stop_vq()
138 mutex_unlock(&vq->mutex); in vhost_test_stop_vq()
175 mutex_lock(&n->dev.mutex); in vhost_test_run()
190 mutex_lock(&vq->mutex); in vhost_test_run()
199 mutex_unlock(&vq->mutex); in vhost_test_run()
209 mutex_unlock(&n->dev.mutex); in vhost_test_run()
213 mutex_unlock(&n->dev.mutex); in vhost_test_run()
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| /linux/drivers/media/dvb-core/ |
| H A D | dmxdev.c | 125 if (mutex_lock_interruptible(&dmxdev->mutex)) in dvb_dvr_open()
129 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
153 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
163 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
168 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
182 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
189 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
196 mutex_unlock(&dmxdev->mutex); in dvb_dvr_open()
205 mutex_lock(&dmxdev->mutex); in dvb_dvr_release()
234 mutex_unlock(&dmxdev->mutex); in dvb_dvr_release()
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| H A D | dvb_demux.c | 696 if (mutex_lock_interruptible(&demux->mutex)) in dmx_ts_feed_set()
701 mutex_unlock(&demux->mutex); in dmx_ts_feed_set()
707 mutex_unlock(&demux->mutex); in dmx_ts_feed_set()
723 mutex_unlock(&demux->mutex); in dmx_ts_feed_set()
734 if (mutex_lock_interruptible(&demux->mutex)) in dmx_ts_feed_start_filtering()
738 mutex_unlock(&demux->mutex); in dmx_ts_feed_start_filtering()
743 mutex_unlock(&demux->mutex); in dmx_ts_feed_start_filtering()
748 mutex_unlock(&demux->mutex); in dmx_ts_feed_start_filtering()
756 mutex_unlock(&demux->mutex); in dmx_ts_feed_start_filtering()
767 mutex_lock(&demux->mutex); in dmx_ts_feed_stop_filtering()
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| /linux/drivers/net/wireless/realtek/rtw88/ |
| H A D | mac80211.c | 58 mutex_lock(&rtwdev->mutex); in rtw_ops_start()
60 mutex_unlock(&rtwdev->mutex); in rtw_ops_start()
69 mutex_lock(&rtwdev->mutex); in rtw_ops_stop()
71 mutex_unlock(&rtwdev->mutex); in rtw_ops_stop()
82 mutex_lock(&rtwdev->mutex); in rtw_ops_config()
104 mutex_unlock(&rtwdev->mutex); in rtw_ops_config()
168 mutex_lock(&rtwdev->mutex); in rtw_ops_add_interface()
172 mutex_unlock(&rtwdev->mutex); in rtw_ops_add_interface()
178 mutex_unlock(&rtwdev->mutex); in rtw_ops_add_interface()
207 mutex_unlock(&rtwdev->mutex); in rtw_ops_add_interface()
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| /linux/Documentation/locking/ |
| H A D | mutex-design.rst | 26 Mutexes are represented by 'struct mutex', defined in include/linux/mutex.h
27 and implemented in kernel/locking/mutex.c. These locks use an atomic variable
37 When acquiring a mutex, there are three possible paths that can be
49 soon. The mutex spinners are queued up using MCS lock so that only
50 one spinner can compete for the mutex.
61 waiting to spin on mutex owner, only to go directly to slowpath upon
78 The mutex subsystem checks and enforces the following rules:
80 - Only one task can hold the mutex at a time.
81 - Only the owner can unlock the mutex.
84 - A mutex must only be initialized via the API (see below).
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| /linux/drivers/mtd/chips/ |
| H A D | cfi_cmdset_0020.c | 268 mutex_lock(&chip->mutex); in do_read_onechip()
300 mutex_unlock(&chip->mutex); in do_read_onechip()
306 mutex_unlock(&chip->mutex); in do_read_onechip()
308 mutex_lock(&chip->mutex); in do_read_onechip()
339 mutex_unlock(&chip->mutex); in do_read_onechip()
345 mutex_unlock(&chip->mutex); in do_read_onechip()
355 mutex_unlock(&chip->mutex); in do_read_onechip()
380 mutex_unlock(&chip->mutex); in do_read_onechip()
447 mutex_lock(&chip->mutex); in do_write_buffer()
472 mutex_unlock(&chip->mutex); in do_write_buffer()
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| /linux/drivers/cpufreq/ |
| H A D | cpufreq_userspace.c | 21 struct mutex mutex; member
38 mutex_lock(&userspace->mutex); in cpufreq_set()
46 mutex_unlock(&userspace->mutex); in cpufreq_set()
63 mutex_init(&userspace->mutex); in cpufreq_userspace_policy_init()
86 mutex_lock(&userspace->mutex); in cpufreq_userspace_policy_start()
89 mutex_unlock(&userspace->mutex); in cpufreq_userspace_policy_start()
99 mutex_lock(&userspace->mutex); in cpufreq_userspace_policy_stop()
102 mutex_unlock(&userspace->mutex); in cpufreq_userspace_policy_stop()
109 mutex_lock(&userspace->mutex); in cpufreq_userspace_policy_limits()
124 mutex_unlock(&userspace->mutex); in cpufreq_userspace_policy_limits()
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| /linux/net/ceph/ |
| H A D | auth.c | 66 mutex_init(&ac->mutex); in ceph_auth_init()
94 mutex_lock(&ac->mutex); in ceph_auth_reset()
99 mutex_unlock(&ac->mutex); in ceph_auth_reset()
128 mutex_lock(&ac->mutex); in ceph_auth_build_hello()
156 mutex_unlock(&ac->mutex); in ceph_auth_build_hello()
213 mutex_lock(&ac->mutex); in ceph_handle_auth_reply()
275 mutex_unlock(&ac->mutex); in ceph_handle_auth_reply()
289 mutex_lock(&ac->mutex); in ceph_build_auth()
292 mutex_unlock(&ac->mutex); in ceph_build_auth()
300 mutex_lock(&ac->mutex); in ceph_auth_is_authenticated()
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| /linux/drivers/media/cec/i2c/ |
| H A D | ch7322.c | 154 struct mutex mutex; /* device access mutex */ member
172 WARN_ON(!mutex_is_locked(&ch7322->mutex)); in ch7322_send_message()
214 WARN_ON(!mutex_is_locked(&ch7322->mutex)); in ch7322_receive_message()
243 mutex_lock(&ch7322->mutex); in ch7322_tx_done()
246 mutex_unlock(&ch7322->mutex); in ch7322_tx_done()
275 mutex_lock(&ch7322->mutex); in ch7322_rx_done()
277 mutex_unlock(&ch7322->mutex); in ch7322_rx_done()
295 mutex_lock(&ch7322->mutex); in ch7322_phys_addr()
298 mutex_unlock(&ch7322->mutex); in ch7322_phys_addr()
311 mutex_lock(&ch7322->mutex); in ch7322_irq()
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| /linux/drivers/mtd/lpddr/ |
| H A D | lpddr_cmds.c | 88 mutex_init(&chip->mutex); in lpddr_cmdset()
152 mutex_unlock(&chip->mutex); in wait_for_ready()
167 mutex_lock(&chip->mutex); in wait_for_ready()
174 mutex_unlock(&chip->mutex); in wait_for_ready()
177 mutex_lock(&chip->mutex); in wait_for_ready()
238 ret = mutex_trylock(&contender->mutex); in get_chip()
242 mutex_unlock(&chip->mutex); in get_chip()
244 mutex_lock(&chip->mutex); in get_chip()
247 mutex_unlock(&contender->mutex); in get_chip()
251 mutex_unlock(&contender->mutex); in get_chip()
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| /linux/drivers/net/wireless/zydas/zd1211rw/ |
| H A D | zd_chip.c | 27 mutex_init(&chip->mutex); in zd_chip_init()
34 ZD_ASSERT(!mutex_is_locked(&chip->mutex)); in zd_chip_clear()
37 mutex_destroy(&chip->mutex); in zd_chip_clear()
141 ZD_ASSERT(mutex_is_locked(&chip->mutex)); in _zd_iowrite32v_async_locked()
190 ZD_ASSERT(mutex_is_locked(&chip->mutex)); in zd_iowrite16a_locked()
259 mutex_lock(&chip->mutex); in zd_ioread16()
261 mutex_unlock(&chip->mutex); in zd_ioread16()
269 mutex_lock(&chip->mutex); in zd_ioread32()
271 mutex_unlock(&chip->mutex); in zd_ioread32()
279 mutex_lock(&chip->mutex); in zd_iowrite16()
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| /linux/fs/kernfs/ |
| H A D | file.c | 43 static inline struct mutex *kernfs_open_file_mutex_ptr(struct kernfs_node *kn) in kernfs_open_file_mutex_ptr()
50 static inline struct mutex *kernfs_open_file_mutex_lock(struct kernfs_node *kn) in kernfs_open_file_mutex_lock()
52 struct mutex *lock; in kernfs_open_file_mutex_lock()
172 mutex_lock(&of->mutex); in kernfs_seq_start()
214 mutex_unlock(&of->mutex); in kernfs_seq_stop()
258 mutex_lock(&of->mutex); in kernfs_file_read_iter()
261 mutex_unlock(&of->mutex); in kernfs_file_read_iter()
274 mutex_unlock(&of->mutex); in kernfs_file_read_iter()
343 mutex_lock(&of->mutex); in kernfs_fop_write_iter()
345 mutex_unlock(&of->mutex); in kernfs_fop_write_iter()
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| /linux/drivers/tee/optee/ |
| H A D | call.c | 44 mutex_init(&cq->mutex); in optee_cq_init()
73 mutex_lock(&cq->mutex); in optee_cq_wait_init()
97 mutex_unlock(&cq->mutex); in optee_cq_wait_init()
101 mutex_lock(&cq->mutex); in optee_cq_wait_init()
113 mutex_unlock(&cq->mutex); in optee_cq_wait_init()
122 mutex_lock(&cq->mutex); in optee_cq_wait_for_completion()
129 mutex_unlock(&cq->mutex); in optee_cq_wait_for_completion()
160 mutex_lock(&cq->mutex); in optee_cq_wait_final()
179 mutex_unlock(&cq->mutex); in optee_cq_wait_final()
188 mutex_lock(&cq->mutex); in optee_cq_incr_sys_thread_count()
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| /linux/drivers/iio/gyro/ |
| H A D | bmg160_core.c | 96 struct mutex mutex; member
495 mutex_lock(&data->mutex); in bmg160_get_temp()
498 mutex_unlock(&data->mutex); in bmg160_get_temp()
506 mutex_unlock(&data->mutex); in bmg160_get_temp()
512 mutex_unlock(&data->mutex); in bmg160_get_temp()
525 mutex_lock(&data->mutex); in bmg160_get_axis()
528 mutex_unlock(&data->mutex); in bmg160_get_axis()
537 mutex_unlock(&data->mutex); in bmg160_get_axis()
543 mutex_unlock(&data->mutex); in bmg160_get_axis()
603 mutex_lock(&data->mutex); in bmg160_read_raw()
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