add oscourse shiyan3 task1 pid

#include <linux/kthread.h> 

#include <linux/delay.h> 

static struct task_struct *thr = NULL;

static int demo_thr(void *data)

{

    while(!kthread_should_stop())

    {

         printk(KERN_ALERT"Name:Stu No.\n");

		 printk(KERN_ALERT"New thread is  running!\n");

         printk(KERN_ALERT"pid is  %d\n",thr->pid);

         msleep(9000);      

     }

    return 0;

}

static struct task_struct *thr = NULL;

static int __init kthread_init(void)

{

    thr = kthread_run(demo_thr,NULL,"kthread-demo");

    if(!thr)

    {

         printk(KERN_ALERT"kthread_run fail\n");

         printk(KERN_ERR"kthread_run fail\n");

         return -1;

    }

	return 0;