函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\irq\manage.c Create Date:2022-07-27 11:10:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：quest_percpu_nmi - allocate a percpu interrupt line for NMI delivery*@irq: Interrupt line to allocate*@handler: Function to be called when the IRQ occurs

函数原型：int request_percpu_nmi(unsigned int irq, irq_handler_t handler, const char *name, void __percpu *dev_id)

返回类型：int

参数：

类型参数名称
unsigned intirq
irq_handler_thandler
const char *name
void __percpu *dev_id
2482  如果非handler则返回:负EINVAL
2485  desc等于中断转换为描述
2487  如果非desc或非设置请求参数或非irq_settings_is_per_cpu_devid(desc)或中断能够被设置或非irq_supports_nmi(desc)则返回:负EINVAL
2494  如果istate按位与IRQS_NMI则返回:负EINVAL
2497  action等于分配内存并置零
2498  如果非action则返回:负ENOMEM
2501  中断处理函数等于handler
2502  中断动作标志等于IRQF_PERCPU按位或IRQF_NO_SUSPEND按位或IRQF_NO_THREAD按位或IRQF_NOBALANCING
2504  设备名等于name
2505  percpu_dev_id等于dev_id
2507  retval等于q_chip_pm_get - Enable power for an IRQ chip*@data: Pointer to interrupt specific data* Enable the power to the IRQ chip referenced by the interrupt data* structure.
2508  如果retval小于0则转到:err_out
2511  retval等于注册中断
2512  如果retval则转到:err_irq_setup
2515  raw_spin_lock_irqsave( & 自旋锁, flags)
2516  istate或等于IRQS_NMI
2517  raw_spin_unlock_irqrestore( & 自旋锁, flags)
2519  返回:0
2521  err_irq_setup :
2522  q_chip_pm_put - Disable power for an IRQ chip*@data: Pointer to interrupt specific data* Disable the power to the IRQ chip referenced by the interrupt data* structure, belongs. Note that power will only be disabled, once this
2523  err_out :
2524  释放内存
2526  返回:retval