相关接口：
kthread_creat kthread_run=kthread_creat + wake_up_process kthread_stop kthread_should_stop fork do_fork vfork clone
示例：
1- kthread_create
#include<linux/init.h> #include<linux/module.h> #include <linux/sched.h> #include <linux/kthread.h> #include <linux/err.h> MODULE_LICENSE("Dual BSD/GPL"); static struct task_struct *test_task; static int test_thread(void *data) { int cnt = 0; while(!kthread_should_stop()) { set_current_state(TASK_UNINTERRUPTIBLE); printk("thread run cnt : %d\n", cnt); cnt++; schedule_timeout(HZ); } return 0; } static int hello_init(void) { printk(KERN_ALERT "HELLLO WORLD ENTER! \n"); test_task = kthread_create(test_thread, NULL, "test_task"); if(IS_ERR(test_task)){ pr_err("Failed to create thread.\n"); return PTR_ERR(test_task); } wake_up_process(test_task); return 0; } static void hello_exit(void) { printk(KERN_ALERT "HELLO WORLD EXIT! \n"); if(test_task){ printk("stop MyThread\n"); kthread_stop(test_task); test_task = NULL; } } module_init(hello_init); module_exit(hello_exit); MODULE_AUTHOR("LHK");
2- kthread_run
#include<linux/init.h> #include<linux/module.h> #include <linux/sched.h> #include <linux/kthread.h> #include <linux/err.h> MODULE_LICENSE("Dual BSD/GPL"); static struct task_struct *test_task; static int test_thread(void *data) { int cnt = 0; while(!kthread_should_stop()) { set_current_state(TASK_UNINTERRUPTIBLE); printk("thread run cnt : %d\n", cnt); cnt++; schedule_timeout(HZ); } return 0; } static int hello_init(void) { printk(KERN_ALERT "HELLLO WORLD ENTER! \n"); test_task = kthread_run(test_thread,NULL,"test_task"); if(IS_ERR(test_task)){ pr_err("Failed to create thread.\n"); return PTR_ERR(test_task); } return 0; } static void hello_exit(void) { printk(KERN_ALERT "HELLO WORLD EXIT! \n"); if(test_task){ printk("stop MyThread\n"); kthread_stop(test_task); test_task = NULL; } } module_init(hello_init); module_exit(hello_exit); MODULE_AUTHOR("LHK");
参考：
https://www.cnblogs.com/zhangxuechao/p/11709830.html
http://blog.sina.com.cn/s/blog_6237dcca0100gq67.html
linux内核设计与实现第3章
