linux内核函数kthread_run()

在include/linux/kthread.h里有如下的宏定义，用来创建和唤醒一个线程

 /**
  18 * kthread_run - create and wake a thread.
  19 * @threadfn: the function to run until signal_pending(current).
  20 * @data: data ptr for @threadfn.
  21 * @namefmt: printf-style name for the thread.
  22 *
  23 * Description: Convenient wrapper for kthread_create() followed by
  24 * wake_up_process().  Returns the kthread or ERR_PTR(-ENOMEM).
  25 */
  26#define kthread_run(threadfn, data, namefmt, ...)                          \
  27({                                                                         \
  28        struct task_struct *__k                                            \
  29                = kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \
  30        if (!IS_ERR(__k))                                                  \
  31                wake_up_process(__k);                                      \
  32        __k;                                                               \
  33})