tasklet使用及原理_Android开发

tasklet基于软中断实现,先看下软中断的类型

enum
{
	HI_SOFTIRQ=0,
	TIMER_SOFTIRQ,
	NET_TX_SOFTIRQ,
	NET_RX_SOFTIRQ,
	BLOCK_SOFTIRQ,
	BLOCK_IOPOLL_SOFTIRQ,
	TASKLET_SOFTIRQ,
	SCHED_SOFTIRQ,
	HRTIMER_SOFTIRQ, /* Unused, but kept as tools rely on the　numbering. Sigh! */
	RCU_SOFTIRQ,    /* Preferable RCU should always be the last softirq */
	NR_SOFTIRQS
};enum
{
	HI_SOFTIRQ=0