[net-next-2.6.git] / include / linux / kthread.h

#ifndef _LINUX_KTHREAD_H
#define _LINUX_KTHREAD_H
/* Simple interface for creating and stopping kernel threads without mess. */
#include <linux/err.h>
#include <linux/sched.h>

struct task_struct *kthread_create(int (*threadfn)(void *data),
				   void *data,
				   const char namefmt[], ...);

/**
 * kthread_run - create and wake a thread.
 * @threadfn: the function to run until signal_pending(current).
 * @data: data ptr for @threadfn.
 * @namefmt: printf-style name for the thread.
 *
 * Description: Convenient wrapper for kthread_create() followed by
 * wake_up_process().  Returns the kthread or ERR_PTR(-ENOMEM).
 */
#define kthread_run(threadfn, data, namefmt, ...)			   \
({									   \
	struct task_struct *__k						   \
		= kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \
	if (!IS_ERR(__k))						   \
		wake_up_process(__k);					   \
	__k;								   \
})

void kthread_bind(struct task_struct *k, unsigned int cpu);
int kthread_stop(struct task_struct *k);
int kthread_stop_sem(struct task_struct *k, struct semaphore *s);
int kthread_should_stop(void);

#endif /* _LINUX_KTHREAD_H */
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	7	struct task_struct kthread_create(int (threadfn)(void *data),
	8	void *data,
	9	const char namefmt[], ...);
	10
	11	/**
9e37bd30	12	* kthread_run - create and wake a thread.
1da177e4 LT	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
9e37bd30 RD	18	* wake_up_process(). Returns the kthread or ERR_PTR(-ENOMEM).
9e37bd30 RD	19	*/
1da177e4 LT	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
1da177e4	29	void kthread_bind(struct task_struct *k, unsigned int cpu);
1da177e4	30	int kthread_stop(struct task_struct *k);
61e1a9ea	31	int kthread_stop_sem(struct task_struct k, struct semaphore s);
1da177e4 LT	32	int kthread_should_stop(void);
	33
	34	#endif /* _LINUX_KTHREAD_H */