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 7 struct task_struct *kthread_create(int (*threadfn)(void *data), 8 void *data, 9 const char namefmt[], ...) 10 __attribute__((format(printf, 3, 4))); 11 12 /** 13 * kthread_run - create and wake a thread. 14 * @threadfn: the function to run until signal_pending(current). 15 * @data: data ptr for @threadfn. 16 * @namefmt: printf-style name for the thread. 17 * 18 * Description: Convenient wrapper for kthread_create() followed by 19 * wake_up_process(). Returns the kthread or ERR_PTR(-ENOMEM). 20 */ 21 #define kthread_run(threadfn, data, namefmt, ...) \ 22 ({ \ 23 struct task_struct *__k \ 24 = kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \ 25 if (!IS_ERR(__k)) \ 26 wake_up_process(__k); \ 27 __k; \ 28 }) 29 30 void kthread_bind(struct task_struct *k, unsigned int cpu); 31 int kthread_stop(struct task_struct *k); 32 int kthread_should_stop(void); 33 34 int kthreadd(void *unused); 35 extern struct task_struct *kthreadd_task; 36 37 #endif /* _LINUX_KTHREAD_H */ 38