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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). |
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); |
1da177e4 LT |
31 | int kthread_should_stop(void); |
32 | ||
73c27992 EB |
33 | int kthreadd(void *unused); |
34 | extern struct task_struct *kthreadd_task; | |
35 | ||
1da177e4 | 36 | #endif /* _LINUX_KTHREAD_H */ |