Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::pid2task - The task_struct of the given process identifier
SYNOPSIS
pid2task:long(pid:long)
ARGUMENTS
pid
process identifier
DESCRIPTION
Return the task struct of the given process id.
SystemTap Tapset Reference March 2016 FUNCTION::PID2TASK(3stap)