函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\irq\irqdesc.c Create Date:2022-07-27 11:08:47
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：kstat_irqs_usr - Get the statistics for an interrupt*@irq: The interrupt number* Returns the sum of interrupt counts on all cpus since boot for @irq

函数原型：unsigned int kstat_irqs_usr(unsigned int irq)

返回类型：unsigned int

参数：

类型参数名称
unsigned intirq
1010  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
1011  sum等于kstat_irqs - Get the statistics for an interrupt*@irq: The interrupt number* Returns the sum of interrupt counts on all cpus since boot for*@irq. The caller must ensure that the interrupt is not removed* concurrently.
1012  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
1013  返回:sum