function::task_ns_tid - The thread identifier of the task as seen in a namespace

task
           task_struct pointer

       This function returns the thread id of the given task as seen in the pid namespace.

       function::task_ns_tid - The thread identifier of the task as seen in a namespace

tapset::task(3stap)

SystemTap Tapset Reference                         April 2024                        FUNCTION::TASK_NS_TI(3stap)

           task_ns_tid:long(task:long)