LXR linux/include/linux/kthread.h

   1#ifndef _LINUX_KTHREAD_H
   2#define _LINUX_KTHREAD_H
   3/* Simple interface for creating and stopping kernel threads without mess. */
   4#include <linux/err.h>
   5#include <linux/sched.h>
   6
   7struct task_struct *kthread_create(int (*threadfn)(void *data),
   8                                   void *data,
   9                                   const char namefmt[], ...);
  10
  11/**
  12 * kthread_run - create and wake a thread.
  13 * @threadfn: the function to run until signal_pending(current).
  14 * @data: data ptr for @threadfn.
  15 * @namefmt: printf-style name for the thread.
  16 *
  17 * Description: Convenient wrapper for kthread_create() followed by
  18 * wake_up_process().  Returns the kthread or ERR_PTR(-ENOMEM).
  19 */
  20#define kthread_run(threadfn, data, namefmt, ...)                          \
  21({                                                                         \
  22        struct task_struct *__k                                            \
  23                = kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \
  24        if (!IS_ERR(__k))                                                  \
  25                wake_up_process(__k);                                      \
  26        __k;                                                               \
  27})
  28
  29void kthread_bind(struct task_struct *k, unsigned int cpu);
  30int kthread_stop(struct task_struct *k);
  31int kthread_should_stop(void);
  32
  33int kthreadd(void *unused);
  34extern struct task_struct *kthreadd_task;
  35
  36#endif /* _LINUX_KTHREAD_H */
  37