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/openbmc/linux/drivers/acpi/acpica/
H A Dexmutex.c37 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 Ddsmethod.c263 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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/openbmc/qemu/util/
H A Dqemu-coroutine-lock.c142 static void coroutine_fn push_waiter(CoMutex *mutex, CoWaitRecord *w) in push_waiter() argument
145 QSLIST_INSERT_HEAD_ATOMIC(&mutex->from_push, w, next); in push_waiter()
148 static void move_waiters(CoMutex *mutex) in move_waiters() argument
151 QSLIST_MOVE_ATOMIC(&reversed, &mutex->from_push); in move_waiters()
155 QSLIST_INSERT_HEAD(&mutex->to_pop, w, next); in move_waiters()
159 static CoWaitRecord *pop_waiter(CoMutex *mutex) in pop_waiter() argument
163 if (QSLIST_EMPTY(&mutex->to_pop)) { in pop_waiter()
164 move_waiters(mutex); in pop_waiter()
165 if (QSLIST_EMPTY(&mutex->to_pop)) { in pop_waiter()
169 w = QSLIST_FIRST(&mutex->to_pop); in pop_waiter()
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H A Dqemu-thread-win32.c68 void qemu_mutex_init(QemuMutex *mutex) in qemu_mutex_init() argument
70 InitializeSRWLock(&mutex->lock); in qemu_mutex_init()
71 qemu_mutex_post_init(mutex); in qemu_mutex_init()
74 void qemu_mutex_destroy(QemuMutex *mutex) in qemu_mutex_destroy() argument
76 assert(mutex->initialized); in qemu_mutex_destroy()
77 mutex->initialized = false; in qemu_mutex_destroy()
78 InitializeSRWLock(&mutex->lock); in qemu_mutex_destroy()
81 void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line) in qemu_mutex_lock_impl() argument
83 assert(mutex->initialized); in qemu_mutex_lock_impl()
84 qemu_mutex_pre_lock(mutex, file, line); in qemu_mutex_lock_impl()
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H A Dqemu-thread-common.h19 static inline void qemu_mutex_post_init(QemuMutex *mutex) in qemu_mutex_post_init() argument
22 mutex->file = NULL; in qemu_mutex_post_init()
23 mutex->line = 0; in qemu_mutex_post_init()
25 mutex->initialized = true; in qemu_mutex_post_init()
28 static inline void qemu_mutex_pre_lock(QemuMutex *mutex, in qemu_mutex_pre_lock() argument
31 trace_qemu_mutex_lock(mutex, file, line); in qemu_mutex_pre_lock()
34 static inline void qemu_mutex_post_lock(QemuMutex *mutex, in qemu_mutex_post_lock() argument
38 mutex->file = file; in qemu_mutex_post_lock()
39 mutex->line = line; in qemu_mutex_post_lock()
41 trace_qemu_mutex_locked(mutex, file, line); in qemu_mutex_post_lock()
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H A Dqemu-thread-posix.c67 void qemu_mutex_init(QemuMutex *mutex) in qemu_mutex_init() argument
71 err = pthread_mutex_init(&mutex->lock, NULL); in qemu_mutex_init()
74 qemu_mutex_post_init(mutex); in qemu_mutex_init()
77 void qemu_mutex_destroy(QemuMutex *mutex) in qemu_mutex_destroy() argument
81 assert(mutex->initialized); in qemu_mutex_destroy()
82 mutex->initialized = false; in qemu_mutex_destroy()
83 err = pthread_mutex_destroy(&mutex->lock); in qemu_mutex_destroy()
88 void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line) in qemu_mutex_lock_impl() argument
92 assert(mutex->initialized); in qemu_mutex_lock_impl()
93 qemu_mutex_pre_lock(mutex, file, line); in qemu_mutex_lock_impl()
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/openbmc/linux/include/linux/
H A Dmutex.h66 struct mutex { struct
86 extern void mutex_destroy(struct mutex *lock); argument
92 static inline void mutex_destroy(struct mutex *lock) {} in mutex_destroy()
104 #define mutex_init(mutex) \ argument
108 __mutex_init((mutex), #mutex, &__key); \
119 struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
121 extern void __mutex_init(struct mutex *lock, const char *name,
130 extern bool mutex_is_locked(struct mutex *lock);
138 struct mutex { struct
152 struct mutex mutexname = __MUTEX_INITIALIZER(mutexname) argument
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/openbmc/linux/drivers/net/ethernet/netronome/nfp/nfpcore/
H A Dnfp_mutex.c128 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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/openbmc/linux/drivers/gpu/drm/amd/pm/
H A Damdgpu_dpm.c49 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()
85 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_set_powergating_by_smu()
107 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_set_powergating_by_smu()
117 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_set_gfx_power_up_by_imu()
119 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_set_gfx_power_up_by_imu()
135 mutex_lock(&adev->pm.mutex); in amdgpu_dpm_baco_enter()
140 mutex_unlock(&adev->pm.mutex); in amdgpu_dpm_baco_enter()
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/openbmc/linux/drivers/soc/mediatek/
H A Dmtk-mutex.c316 struct mtk_mutex mutex[MTK_MUTEX_MAX_HANDLES]; member
722 if (!mtx->mutex[i].claimed) { in mtk_mutex_get()
723 mtx->mutex[i].claimed = true; in mtk_mutex_get()
724 return &mtx->mutex[i]; in mtk_mutex_get()
731 void mtk_mutex_put(struct mtk_mutex *mutex) in mtk_mutex_put() argument
733 struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx, in mtk_mutex_put()
734 mutex[mutex->id]); in mtk_mutex_put()
736 WARN_ON(&mtx->mutex[mutex->id] != mutex); in mtk_mutex_put()
738 mutex->claimed = false; in mtk_mutex_put()
742 int mtk_mutex_prepare(struct mtk_mutex *mutex) in mtk_mutex_prepare() argument
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/openbmc/qemu/include/qemu/
H A Dthread.h26 void qemu_mutex_init(QemuMutex *mutex);
27 void qemu_mutex_destroy(QemuMutex *mutex);
28 int TSA_NO_TSA qemu_mutex_trylock_impl(QemuMutex *mutex, const char *file,
30 void TSA_NO_TSA qemu_mutex_lock_impl(QemuMutex *mutex, const char *file,
32 void TSA_NO_TSA qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file,
35 void qemu_rec_mutex_init(QemuRecMutex *mutex);
36 void qemu_rec_mutex_destroy(QemuRecMutex *mutex);
37 void qemu_rec_mutex_lock_impl(QemuRecMutex *mutex, const char *file, int line);
38 int qemu_rec_mutex_trylock_impl(QemuRecMutex *mutex, const char *file, int line);
39 void qemu_rec_mutex_unlock_impl(QemuRecMutex *mutex, const char *file, int line);
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/openbmc/linux/Documentation/translations/zh_CN/locking/
H A Dmutex-design.rst4 :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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/openbmc/linux/include/linux/soc/mediatek/
H A Dmtk-mutex.h71 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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/openbmc/linux/kernel/locking/
H A Dmutex.c46 __mutex_init(struct mutex *lock, const char *name, struct lock_class_key *key) in __mutex_init()
79 static inline struct task_struct *__mutex_owner(struct mutex *lock) in __mutex_owner()
89 bool mutex_is_locked(struct mutex *lock) in mutex_is_locked()
103 static inline struct task_struct *__mutex_trylock_common(struct mutex *lock, bool handoff) in __mutex_trylock_common()
142 static inline bool __mutex_trylock_or_handoff(struct mutex *lock, bool handoff) in __mutex_trylock_or_handoff()
150 static inline bool __mutex_trylock(struct mutex *lock) in __mutex_trylock()
166 static __always_inline bool __mutex_trylock_fast(struct mutex *lock) in __mutex_trylock_fast()
177 static __always_inline bool __mutex_unlock_fast(struct mutex *lock) in __mutex_unlock_fast()
185 static inline void __mutex_set_flag(struct mutex *lock, unsigned long flag) in __mutex_set_flag()
190 static inline void __mutex_clear_flag(struct mutex *lock, unsigned long flag) in __mutex_clear_flag()
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/openbmc/linux/drivers/vhost/
H A Dtest.c51 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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/openbmc/linux/drivers/net/wireless/realtek/rtw89/
H A Dmac80211.c62 mutex_lock(&rtwdev->mutex); in rtw89_ops_start()
64 mutex_unlock(&rtwdev->mutex); in rtw89_ops_start()
73 mutex_lock(&rtwdev->mutex); in rtw89_ops_stop()
75 mutex_unlock(&rtwdev->mutex); in rtw89_ops_stop()
85 mutex_lock(&rtwdev->mutex); in rtw89_ops_config()
103 mutex_unlock(&rtwdev->mutex); in rtw89_ops_config()
118 mutex_lock(&rtwdev->mutex); in rtw89_ops_add_interface()
168 mutex_unlock(&rtwdev->mutex); in rtw89_ops_add_interface()
185 mutex_lock(&rtwdev->mutex); in rtw89_ops_remove_interface()
194 mutex_unlock(&rtwdev->mutex); in rtw89_ops_remove_interface()
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/openbmc/linux/drivers/net/wireless/realtek/rtw88/
H A Dmac80211.c58 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()
201 mutex_unlock(&rtwdev->mutex); in rtw_ops_add_interface()
215 mutex_unlock(&rtwdev->mutex); in rtw_ops_add_interface()
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/openbmc/linux/Documentation/locking/
H A Dmutex-design.rst26 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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/openbmc/linux/drivers/media/dvb-core/
H A Ddmxdev.c125 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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/openbmc/linux/drivers/mtd/chips/
H A Dcfi_cmdset_0020.c268 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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/openbmc/linux/drivers/gpu/drm/i915/
H A Dintel_wakeref.h38 struct mutex mutex; member
49 struct lock_class_key mutex; member
130 might_lock(&wf->mutex); in intel_wakeref_might_get()
181 might_lock(&wf->mutex); in intel_wakeref_might_put()
194 __acquires(wf->mutex) in intel_wakeref_lock()
196 mutex_lock(&wf->mutex); in intel_wakeref_lock()
207 __releases(wf->mutex) in intel_wakeref_unlock()
209 mutex_unlock(&wf->mutex); in intel_wakeref_unlock()
222 mutex_lock(&wf->mutex); in intel_wakeref_unlock_wait()
223 mutex_unlock(&wf->mutex); in intel_wakeref_unlock_wait()
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/openbmc/linux/drivers/gpu/drm/mediatek/
H A Dmtk_disp_ovl_adaptor.c315 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex) in mtk_ovl_adaptor_add_comp() argument
317 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA0); in mtk_ovl_adaptor_add_comp()
318 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA1); in mtk_ovl_adaptor_add_comp()
319 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA2); in mtk_ovl_adaptor_add_comp()
320 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA3); in mtk_ovl_adaptor_add_comp()
321 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA4); in mtk_ovl_adaptor_add_comp()
322 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA5); in mtk_ovl_adaptor_add_comp()
323 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA6); in mtk_ovl_adaptor_add_comp()
324 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA7); in mtk_ovl_adaptor_add_comp()
325 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE1); in mtk_ovl_adaptor_add_comp()
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/openbmc/linux/drivers/media/usb/uvc/
H A Duvc_queue.c227 queue->queue.lock = &queue->mutex; in uvc_queue_init()
243 mutex_init(&queue->mutex); in uvc_queue_init()
253 mutex_lock(&queue->mutex); in uvc_queue_release()
255 mutex_unlock(&queue->mutex); in uvc_queue_release()
267 mutex_lock(&queue->mutex); in uvc_request_buffers()
269 mutex_unlock(&queue->mutex); in uvc_request_buffers()
278 mutex_lock(&queue->mutex); in uvc_query_buffer()
280 mutex_unlock(&queue->mutex); in uvc_query_buffer()
290 mutex_lock(&queue->mutex); in uvc_create_buffers()
292 mutex_unlock(&queue->mutex); in uvc_create_buffers()
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/openbmc/qemu/scripts/
H A Danalyse-locks-simpletrace.py22 def _get_mutex(self, mutex): argument
23 if not mutex in self.mutex_records:
24 self.mutex_records[mutex] = {"locks": 0,
32 return self.mutex_records[mutex]
34 def qemu_mutex_lock(self, timestamp, mutex, filename, line): argument
36 rec = self._get_mutex(mutex)
41 def qemu_mutex_locked(self, timestamp, mutex, filename, line): argument
43 rec = self._get_mutex(mutex)
50 def qemu_mutex_unlock(self, timestamp, mutex, filename, line): argument
52 rec = self._get_mutex(mutex)
/openbmc/linux/net/ceph/
H A Dauth.c66 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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