hrtimer高精度定时器的简单使用【学习笔记】
1 #include <linux/module.h> 2 3 #include <linux/kernel.h> 4 #include <linux/hrtimer.h> 5 #include <linux/jiffies.h> 6 7 8 static struct hrtimer timer; 9 ktime_t kt; 10 11 static enum hrtimer_restart hrtimer_hander(struct hrtimer *timer) 12 { 13 printk("zbzhuang:I am in hrtimer hander\r\n"); 14 15 hrtimer_forward(timer,timer->base->get_time(),kt); 16 17 return HRTIMER_RESTART; 18 19 20 } 21 22 static int __init test_init(void) 23 { 24 printk("zbzhuang:---------%s-----------\r\n",__func__); 25 26 kt = ktime_set(1,10); 27 hrtimer_init(&timer,CLOCK_MONOTONIC,HRTIMER_MODE_REL); 28 hrtimer_start(&timer,kt,HRTIMER_MODE_REL); 29 timer.function = hrtimer_hander; 30 31 return 0; 32 } 33 34 static void __exit test_exit(void) 35 { 36 hrtimer_cancel(&timer); 37 printk("zbzhuang------------test over---------------\r\n"); 38 } 39 40 41 module_init(test_init); 42 module_exit(test_exit); 43 MODULE_LICENSE("GPL"); 44 MODULE_AUTHOR("zbzhuang@qq.com");
觉得不错，就给我点小支持吧，蟹蟹
