Linux Process state transition diagram

Linux process status in Linux kernel process status

Operational status (task_running)

A state that is being run or ready by the CPU. Such a process is becoming a runnning process. The process of running state can be divided into 3 cases: Kernel running state, user running state, ready state.

Interruptible sleep status (task_interruptible)

A process that is in the waiting state, and once the resource that the process waits for is freed, the process goes into a running state.

Non-disruptive Sleep state (task_uninterruptible)

Processes in this state can only be awakened with the wake_up () function.

Paused State (task_stopped)

When a process receives a signal sigstop, SIGTSTP, Sigttin, or Sigttou, it enters a paused state. You can send a sigcont signal to it to make the process transition to a running state.

Zombie State (Task_zombie)

When the process has stopped running, but the parent process has not yet asked for its status.

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Linux Process state transition diagram