| /kernel/linux/linux-6.6/Documentation/locking/ |
| D | percpu-rw-semaphore.rst | 2 Percpu rw semaphores
5 Percpu rw semaphores is a new read-write semaphore design that is
8 The problem with traditional read-write semaphores is that when multiple
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| D | locktypes.rst | 89 The aforementioned lock types except semaphores have strict owner
118 Semaphores are often used for both serialization and waiting, but new use
122 semaphores and PREEMPT_RT
126 semaphores have no concept of owners, thus preventing PREEMPT_RT from
127 providing priority inheritance for semaphores. After all, an unknown
128 owner cannot be boosted. As a consequence, blocking on semaphores can
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| /kernel/linux/linux-5.10/Documentation/locking/ |
| D | percpu-rw-semaphore.rst | 2 Percpu rw semaphores
5 Percpu rw semaphores is a new read-write semaphore design that is
8 The problem with traditional read-write semaphores is that when multiple
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| D | locktypes.rst | 89 The aforementioned lock types except semaphores have strict owner
118 Semaphores are often used for both serialization and waiting, but new use
122 semaphores and PREEMPT_RT
126 semaphores have no concept of owners, thus preventing PREEMPT_RT from
127 providing priority inheritance for semaphores. After all, an unknown
128 owner cannot be boosted. As a consequence, blocking on semaphores can
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| /kernel/liteos_m/kernel/include/ |
| D | los_sem.h | 173 …sed to create a semaphore control structure according to the initial number of available semaphores
180 …* @param count [IN] Initial number of available semaphores. The value range is [0, OS_SEM_C…
185 * semaphores.
200 * semaphores specified by count and return the ID of this semaphore control structure.
206 * @param count [IN] Initial number of available semaphores. The value range is [0, 1].
211 * semaphores.
305 UINT16 semCount; /**< Number of available semaphores */
306 UINT16 maxSemCount; /**< Max number of available semaphores */
313 * Max count of binary semaphores.
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| /kernel/linux/linux-6.6/drivers/gpu/drm/radeon/ |
| D | radeon_sync.c | 46 sync->semaphores[i] = NULL; in radeon_sync_create()
80 * radeon_sync_resv - use the semaphores to sync to a reservation object
153 sync->semaphores[count++] = semaphore; in radeon_sync_rings()
194 * Free the sync object by freeing all semaphores in it.
203 radeon_semaphore_free(rdev, &sync->semaphores[i], fence); in radeon_sync_free()
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| /kernel/liteos_a/kernel/include/ |
| D | los_sem.h | 164 * Maximum number of binary semaphores.
174 …sed to create a semaphore control structure according to the initial number of available semaphores
181 …* @param count [IN] Initial number of available semaphores. The value range is [0, OS_SEM_CO…
186 * semaphores.
201 * available semaphores specified by count and return the ID of this semaphore control structure.
207 * @param count [IN] Initial number of available semaphores. The value range is [0, 1].
212 * available semaphores.
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| /kernel/linux/linux-5.10/drivers/gpu/drm/radeon/ |
| D | radeon_sync.c | 46 sync->semaphores[i] = NULL; in radeon_sync_create()
80 * radeon_sync_resv - use the semaphores to sync to a reservation object
168 sync->semaphores[count++] = semaphore; in radeon_sync_rings()
209 * Free the sync object by freeing all semaphores in it.
218 radeon_semaphore_free(rdev, &sync->semaphores[i], fence); in radeon_sync_free()
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| /kernel/linux/linux-6.6/tools/testing/selftests/powerpc/dscr/ |
| D | dscr_explicit_test.c | 55 sem_t semaphores[2]; in dscr_explicit_lockstep_test() local
56 sem_t *prev = &semaphores[1]; /* reversed prev/next than for the other thread */ in dscr_explicit_lockstep_test()
57 sem_t *next = &semaphores[0]; in dscr_explicit_lockstep_test()
68 FAIL_IF(pthread_create(&thread, NULL, dscr_explicit_lockstep_thread, (void *)semaphores)); in dscr_explicit_lockstep_test()
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| /kernel/linux/linux-6.6/include/uapi/linux/ |
| D | sem.h | 33 unsigned short sem_nsems; /* no. of semaphores in array */
81 #define SEMMSL 32000 /* <= INT_MAX max num of semaphores per id */
82 #define SEMMNS (SEMMNI*SEMMSL) /* <= INT_MAX max # of semaphores in system */
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| /kernel/linux/linux-5.10/include/uapi/linux/ |
| D | sem.h | 33 unsigned short sem_nsems; /* no. of semaphores in array */
81 #define SEMMSL 32000 /* <= INT_MAX max num of semaphores per id */
82 #define SEMMNS (SEMMNI*SEMMSL) /* <= INT_MAX max # of semaphores in system */
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| /kernel/linux/linux-5.10/arch/mips/include/uapi/asm/ |
| D | sembuf.h | 21 unsigned long sem_nsems; /* no. of semaphores in array */
30 unsigned long sem_nsems; /* no. of semaphores in array */
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| /kernel/linux/linux-6.6/arch/mips/include/uapi/asm/ |
| D | sembuf.h | 21 unsigned long sem_nsems; /* no. of semaphores in array */
30 unsigned long sem_nsems; /* no. of semaphores in array */
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| /kernel/linux/linux-5.10/drivers/net/ethernet/intel/igc/ |
| D | igc_i225.c | 12 * Acquire the necessary semaphores for exclusive access to the EEPROM.
27 * then release the semaphores acquired.
92 /* Release semaphores */ in igc_get_hw_semaphore_i225()
184 * Uses necessary synchronization semaphores.
192 /* We cannot hold synchronization semaphores for too long, in igc_read_nvm_srrd_i225()
290 /* We cannot hold synchronization semaphores for too long, in igc_write_nvm_srwr_i225()
425 * semaphores twice here. in igc_update_nvm_checksum_i225()
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| /kernel/linux/linux-6.6/drivers/net/ethernet/intel/igc/ |
| D | igc_i225.c | 13 * Acquire the necessary semaphores for exclusive access to the EEPROM.
28 * then release the semaphores acquired.
93 /* Release semaphores */ in igc_get_hw_semaphore_i225()
185 * Uses necessary synchronization semaphores.
193 /* We cannot hold synchronization semaphores for too long, in igc_read_nvm_srrd_i225()
291 /* We cannot hold synchronization semaphores for too long, in igc_write_nvm_srwr_i225()
426 * semaphores twice here. in igc_update_nvm_checksum_i225()
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/mailbox/ |
| D | nvidia,tegra186-hsp.txt | 9 The features that HSP supported are shared mailboxes, shared semaphores,
10 arbitrated semaphores and doorbells.
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| /kernel/linux/linux-6.6/Documentation/translations/zh_CN/locking/ |
| D | mutex-design.rst | 27 排斥”。互斥锁是一种睡眠锁，它的行为类似于二进制信号量（semaphores），在
72 改善一些工作负载的性能。注意，这种技术也被用于读写信号量（rw-semaphores）。
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| /kernel/linux/linux-6.6/include/drm/ |
| D | task_barrier.h | 28 * Based on the Little book of semaphores - https://greenteapress.com/wp/semaphores/
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| /kernel/liteos_a/kernel/base/include/ |
| D | los_sem_pri.h | 49 UINT16 semCount; /**< Number of available semaphores */
50 UINT16 maxSemCount; /**< Max number of available semaphores */
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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/mailbox/ |
| D | nvidia,tegra186-hsp.yaml | 22 semaphores, arbitrated semaphores and doorbells.
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| /kernel/linux/linux-5.10/drivers/net/ethernet/intel/igb/ |
| D | e1000_i210.c | 74 /* Release semaphores */ in igb_get_hw_semaphore_i210()
87 * Acquire the necessary semaphores for exclusive access to the EEPROM.
102 * then release the semaphores acquired.
185 * Uses necessary synchronization semaphores.
193 /* We cannot hold synchronization semaphores for too long, in igb_read_nvm_srrd_i210()
293 /* We cannot hold synchronization semaphores for too long, in igb_write_nvm_srwr_i210()
592 * semaphores twice here. in igb_update_nvm_checksum_i210()
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| /kernel/linux/linux-6.6/drivers/net/ethernet/intel/igb/ |
| D | e1000_i210.c | 74 /* Release semaphores */ in igb_get_hw_semaphore_i210()
87 * Acquire the necessary semaphores for exclusive access to the EEPROM.
102 * then release the semaphores acquired.
185 * Uses necessary synchronization semaphores.
193 /* We cannot hold synchronization semaphores for too long, in igb_read_nvm_srrd_i210()
293 /* We cannot hold synchronization semaphores for too long, in igb_write_nvm_srwr_i210()
593 * semaphores twice here. in igb_update_nvm_checksum_i210()
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| /kernel/linux/linux-5.10/drivers/gpu/drm/i915/ |
| D | i915_request.h | 448 * If the timeline is using semaphores, it will also be emitting an
449 * "initial breadcrumb" after the semaphores are complete and just before
452 * dependencies (via HW semaphores).
455 * (either by fences or by semaphores) and it will have begun processing
512 * this is controlled with a mixture of interrupts and semaphores. Once
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| /kernel/linux/linux-6.6/kernel/sched/ |
| D | completion.c | 6 * It differs from semaphores in that their default case is the opposite,
9 * something which isn't entirely natural for semaphores.
11 * But more importantly, the primitive documents the usage. Semaphores would
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| /kernel/linux/linux-5.10/kernel/sched/ |
| D | completion.c | 5 * It differs from semaphores in that their default case is the opposite,
8 * something which isn't entirely natural for semaphores.
10 * But more importantly, the primitive documents the usage. Semaphores would
|