rcu_irq_enter

函数名称：_irq_enter - inform RCU that current CPU is entering irq away from idle* Enter an interrupt handler, which might possibly result in exiting* idle mode, in other words, entering the mode in which read-side critical* sections can occur

函数原型：void rcu_irq_enter(void)

返回类型：void

参数：无

876

lockdep_assert_irqs_disabled()

877

_nmi_enter_common - inform RCU of entry to NMI context*@irq: Is this call from rcu_irq_enter?* If the CPU was idle from RCU's viewpoint, update rdp->dynticks and* rdp->dynticks_nmi_nesting to let the RCU grace-period handling know* that the CPU is active

**调用者**
名称	描述
kvm_async_pf_task_wait	@interrupt_kernel: Is this called from a routine which interrupts the kernel* (other than user space)?
do_async_page_fault
irq_enter	Enter an interrupt context.
rcu_irq_enter_irqson	Wrapper for rcu_irq_enter() where interrupts are enabled.* If you add or remove a call to rcu_irq_enter_irqson(), be sure to test* with CONFIG_RCU_EQS_DEBUG=y.

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