函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\irq_poll.c Create Date:2022-07-27 08:19:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：irq_poll_softirq

函数原型：static void __latent_entropy irq_poll_softirq(struct softirq_action *h)

返回类型：void

参数：

类型参数名称
struct softirq_action *h
80  list等于this_cpu_ptr( & blk_cpu_iopoll)
81  rearm等于0, budget等于irq_poll_budget
82  start_time等于jiffies
84  禁止中断()
86  当非链表为空循环
93  如果budget小于等于0或These inlines deal with timer wrapping correctly. You are * strongly encouraged to use them* 1. Because people otherwise forget* 2. Because if the timer wrap changes in future you won't have to* alter your driver code.(jiffies, start_time)则
94  rearm等于1
95  退出
98  开中断()
105  iop等于list_entry - get the struct for this entry*@ptr: the &struct list_head pointer.*@type: the type of the struct this is embedded in.*@member: the name of the list_head within the struct.(链表后项, structirq_poll, list)
107  weight等于weight
108  work等于0
109  如果st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则work等于poll(iop, weight)
112  budget减等于work
114  禁止中断()
124  如果work大于等于weight则
125  如果st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则__irq_poll_complete - Mark this @iop as un-polled again*@iop: The parent iopoll structure* Description:* See irq_poll_complete(). This function must be called with interrupts* disabled.
127  否则链表项移动到尾部
132  如果rearm则__raise_softirq_irqoff(IRQ_POLL_SOFTIRQ)
135  开中断()