1 /*
2  * Create a new kernel thread
3  */
4 extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);

1 struct task_struct {
2 ...
3     struct mm_struct *mm, *active_mm;
4 ...
5 
6 }

 1 /**
 2  * kthread_create - create a kthread.
 3  * @threadfn: the function to run until signal_pending(current).
 4  * @data: data ptr for @threadfn.
 5  * @namefmt: printf-style name for the thread.
 6  *
 7  * Description: This helper function creates and names a kernel
 8  * thread.  The thread will be stopped: use wake_up_process() to start
 9  * it.  See also kthread_run(), kthread_create_on_cpu().
10  *
11  * When woken, the thread will run @threadfn() with @data as its
12  * argument. @threadfn() can either call do_exit() directly if it is a
13  * standalone thread for which noone will call kthread_stop(), or
14  * return when ‘kthread_should_stop()‘ is true (which means
15  * kthread_stop() has been called).  The return value should be zero
16  * or a negative error number; it will be passed to kthread_stop().
17  *
18  * Returns a task_struct or ERR_PTR(-ENOMEM).
19  */
20 struct task_struct *kthread_create(int (*threadfn)(void *data),
21                    void *data,
22                    const char namefmt[],
23                    ...)