Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
function::jiffies - Kernel jiffies count
SYNOPSIS
jiffies:long()
ARGUMENTS
None
DESCRIPTION
This function returns the value of the kernel jiffies variable. This value is incremented periodically by
timer interrupts, and may wrap around a 32-bit or 64-bit boundary. See HZ.
SEE ALSO
tapset::timestamp(3stap)
SystemTap Tapset Reference March 2016 FUNCTION::JIFFIES(3stap)