title:Create threads
keywords:kernel,linux,threads

# Create threads

State of kernel thread  - include/linux/sched.h

```c
/* Used in tsk->state: */
#define TASK_RUNNING			0x00000000
#define TASK_INTERRUPTIBLE		0x00000001
#define TASK_UNINTERRUPTIBLE		0x00000002
#define __TASK_STOPPED			0x00000004
#define __TASK_TRACED			0x00000008
/* Used in tsk->exit_state: */
#define EXIT_DEAD			0x00000010
#define EXIT_ZOMBIE			0x00000020
#define EXIT_TRACE			(EXIT_ZOMBIE | EXIT_DEAD)
/* Used in tsk->state again: */
#define TASK_PARKED			0x00000040
#define TASK_DEAD			0x00000080
#define TASK_WAKEKILL			0x00000100
#define TASK_WAKING			0x00000200
#define TASK_NOLOAD			0x00000400
#define TASK_NEW			0x00000800
#define TASK_RTLOCK_WAIT		0x00001000
#define TASK_FREEZABLE			0x00002000
#define __TASK_FREEZABLE_UNSAFE	       (0x00004000 * IS_ENABLED(CONFIG_LOCKDEP))
#define TASK_FROZEN			0x00008000
#define TASK_STATE_MAX			0x00010000

#define TASK_ANY			(TASK_STATE_MAX-1)
```

## Links


https://www.linuxtoday.com/blog/kernel-threads/  
http://www.embeddedlinux.org.cn/EssentialLinuxDeviceDrivers/final/ch03lev1sec1.html  
https://elixir.bootlin.com/linux/v6.1.21/source/include/linux/sched.h  
https://elixir.bootlin.com/linux/v6.1.21/source/kernel/sysctl.c