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Searched refs:shared_data (Results 1 – 15 of 15) sorted by relevance

/linux/tools/testing/selftests/kvm/loongarch/
H A Darch_timer.c32 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; in guest_irq_handler() local
41 WRITE_ONCE(shared_data->nr_iter, shared_data->nr_iter - 1); in guest_irq_handler()
42 if (shared_data->nr_iter == 0) in guest_irq_handler()
54 xcnt_diff_us = cycles_to_usec(xcnt - shared_data->xcnt); in guest_irq_handler()
62 WRITE_ONCE(shared_data->nr_iter, shared_data->nr_iter + 1); in guest_irq_handler()
69 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; in guest_test_period_timer() local
71 shared_data->nr_iter = test_args.nr_iter; in guest_test_period_timer()
72 shared_data->xcnt = timer_get_cycles(); in guest_test_period_timer()
81 irq_iter = READ_ONCE(shared_data->nr_iter); in guest_test_period_timer()
93 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; in guest_test_oneshot_timer() local
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/linux/tools/testing/selftests/kvm/riscv/
H A Darch_timer.c23 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; in guest_irq_handler() local
29 xcnt_diff_us = cycles_to_usec(xcnt - shared_data->xcnt); in guest_irq_handler()
38 WRITE_ONCE(shared_data->nr_iter, shared_data->nr_iter + 1); in guest_irq_handler()
41 static void guest_run(struct test_vcpu_shared_data *shared_data) in guest_run() argument
45 shared_data->nr_iter = 0; in guest_run()
46 shared_data->guest_stage = 0; in guest_run()
51 shared_data->xcnt = timer_get_cycles(); in guest_run()
58 irq_iter = READ_ONCE(shared_data->nr_iter); in guest_run()
70 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; in guest_code() local
75 guest_run(shared_data); in guest_code()
/linux/Documentation/translations/zh_CN/process/
H A Dvolatile-considered-harmful.rst40 do_something_on(&shared_data);
41 do_something_else_with(&shared_data);
44 如果所有的代码都遵循加锁规则，当持有the_lock的时候，不可能意外的改变shared_data的
47 它知道在shared_data里面将有什么，但是因为spin_lock()调用跟内存屏障一样，会强制编
50 如果shared_data被声名为volatile，锁操作将仍然是必须的。就算我们知道没有其他人正在
51 使用它，编译器也将被阻止优化对临界区内shared_data的访问。在锁有效的同时，
52 shared_data不是volatile的。在处理共享数据的时候，适当的锁操作可以不再需要
/linux/Documentation/translations/zh_TW/process/
H A Dvolatile-considered-harmful.rst43 do_something_on(&shared_data);
44 do_something_else_with(&shared_data);
47 如果所有的代碼都遵循加鎖規則，當持有the_lock的時候，不可能意外的改變shared_data的
50 它知道在shared_data裏面將有什麼，但是因爲spin_lock()調用跟內存屏障一樣，會強制編
53 如果shared_data被聲名爲volatile，鎖操作將仍然是必須的。就算我們知道沒有其他人正在
54 使用它，編譯器也將被阻止優化對臨界區內shared_data的訪問。在鎖有效的同時，
55 shared_data不是volatile的。在處理共享數據的時候，適當的鎖操作可以不再需要
/linux/tools/testing/selftests/futex/functional/
H A Dfutex_wait.c67 u_int32_t *shared_data; in TEST() local
80 shared_data = shmat(shm_id, NULL, 0); in TEST()
82 *shared_data = 0; in TEST()
83 futex = shared_data; in TEST()
100 shmdt(shared_data); in TEST()
H A Dfutex_waitv.c95 unsigned int *shared_data = shmat(shm_id, NULL, 0); in TEST() local
97 *shared_data = 0; in TEST()
98 waitv[i].uaddr = (uintptr_t)shared_data; in TEST()
/linux/tools/testing/selftests/kvm/arm64/
H A Darch_timer_edge_cases.c50 } shared_data; variable
120 int h = atomic_read(&shared_data.handled); in assert_irqs_handled()
154 atomic_inc(&shared_data.spurious); in guest_irq_handler()
175 atomic_inc(&shared_data.handled); in guest_irq_handler()
184 atomic_set(&shared_data.handled, 0); in set_cval_irq()
185 atomic_set(&shared_data.spurious, 0); in set_cval_irq()
193 atomic_set(&shared_data.handled, 0); in set_tval_irq()
194 atomic_set(&shared_data.spurious, 0); in set_tval_irq()
225 for (h = atomic_read(&shared_data.handled); h == atomic_read(&shared_data.handled);) { in wait_for_non_spurious_irq()
247 h = atomic_read(&shared_data.handled); in poll_for_non_spurious_irq()
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H A Dvgic_irq.c32 uint32_t shared_data; member
827 WRITE_ONCE(args->shared_data, MIN_SPI); in guest_code_asym_dir()
832 } while (READ_ONCE(args->shared_data) == MIN_SPI); in guest_code_asym_dir()
837 } while (READ_ONCE(args->shared_data) != MIN_SPI); in guest_code_asym_dir()
842 WRITE_ONCE(args->shared_data, 0); in guest_code_asym_dir()
/linux/tools/testing/selftests/kvm/
H A Darch_timer.c53 struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[vcpu_idx]; in test_vcpu_run() local
67 sync_global_from_guest(vm, *shared_data); in test_vcpu_run()
69 vcpu_idx, shared_data->guest_stage, shared_data->nr_iter); in test_vcpu_run()
/linux/Documentation/process/
H A Dvolatile-considered-harmful.rst31 do_something_on(&shared_data);
32 do_something_else_with(&shared_data);
35 If all the code follows the locking rules, the value of shared_data cannot
40 compiler might think it knows what will be in shared_data, but the
45 If shared_data were declared volatile, the locking would still be
47 to shared_data _within_ the critical section, when we know that nobody else
48 can be working with it. While the lock is held, shared_data is not
/linux/Documentation/translations/it_IT/process/
H A Dvolatile-considered-harmful.rst38 do_something_on(&shared_data);
39 do_something_else_with(&shared_data);
/linux/drivers/scsi/aic7xxx/
H A Daic79xx.h449 } shared_data; member
H A Daic7xxx_core.c588 q_hscb->shared_data.cdb_ptr = in ahc_swap_with_next_hscb()
1042 ahc_set_scsi_status(scb, hscb->shared_data.status.scsi_status); in ahc_handle_seqint()
1043 switch (hscb->shared_data.status.scsi_status) { in ahc_handle_seqint()
1074 sc = (struct scsi_sense *)(&hscb->shared_data.cdb); in ahc_handle_seqint()
2090 for (i = 0; i < sizeof(hscb->shared_data.cdb); i++)
2091 printk("%#02x", hscb->shared_data.cdb[i]);
6623 spkt = &hscb->shared_data.status; in ahc_calc_residual()
H A Daic79xx_core.c446 scb->hscb->shared_data.idata.cdb_plus_saddr.sense_addr = in ahd_setup_scb_common()
3578 for (i = 0; i < sizeof(hscb->shared_data.idata.cdb); i++)
3579 printk("%#02x", hscb->shared_data.idata.cdb[i]);
7341 shared_data.idata.cdb)); in ahd_chip_init()
8865 ahd_set_scsi_status(scb, hscb->shared_data.istatus.scsi_status); in ahd_handle_scsi_status()
8866 switch (hscb->shared_data.istatus.scsi_status) { in ahd_handle_scsi_status()
8960 sc = (struct scsi_sense *)hscb->shared_data.idata.cdb; in ahd_handle_scsi_status()
9032 if (scb->hscb->shared_data.istatus.scsi_status != 0) { in ahd_handle_scb_status()
9085 spkt = &hscb->shared_data.istatus; in ahd_calc_residual()
/linux/drivers/net/wireless/intel/iwlegacy/
H A D3945.c2201 struct il3945_shared *shared_data = il->_3945.shared_virt; in il3945_hw_tx_queue_init() local
2203 shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32) txq->q.dma_addr); in il3945_hw_tx_queue_init()