Provided by: systemtap-doc_2.9-2ubuntu2_all 

NAME
function::task_start_time - Start time of the given task
SYNOPSIS
task_start_time:long(tid:long)
ARGUMENTS
tid
Thread id of the given task
DESCRIPTION
Returns the start time of the given task in nanoseconds since boot time or 0 if the task does not exist.
SEE ALSO
tapset::task_time(3stap)
SystemTap Tapset Reference April 2016 FUNCTION::TASK_START(3stap)