ipi_get_hwirq

函数名称：pi_get_hwirq - Get the hwirq associated with an IPI to a cpu*@irq: linux irq number*@cpu: the target cpu* When dealing with coprocessors IPI, we need to inform the coprocessor of* the hwirq it needs to use to receive and send IPIs.

函数原型：irq_hw_number_t ipi_get_hwirq(unsigned int irq, unsigned int cpu)

返回类型：irq_hw_number_t

参数：

类型	参数	名称
unsigned int	irq
unsigned int	cpu

164

data等于irq_get_irq_data(irq)

165

struct cpumask * ipimask = data ? irq_data_get_affinity_mask(data) : NULL

167

如果非data或非ipimask或cpu大于等于nr_cpu_ids则返回:Contrary to Linux irqs, for hardware irqs the irq number 0 is valid

170

如果非测试CPU信息则返回:Contrary to Linux irqs, for hardware irqs the irq number 0 is valid

179

如果irq_domain_is_ipi_per_cpu(硬件中断对象)则data等于irq_get_irq_data(irq + cpu - ipi_offset)

182

返回:如果data则irqd_to_hwirq(data)否则Contrary to Linux irqs, for hardware irqs the irq number 0 is valid

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