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

NAME
probe::vm.brk - Fires when a brk is requested (i.e. the heap will be resized)
SYNOPSIS
vm.brk
VALUES
length
the length of the memory segment
address
the requested address
name
name of the probe point
CONTEXT
The process calling brk.
SEE ALSO
tapset::memory(3stap)
SystemTap Tapset Reference March 2016 PROBE::VM.BRK(3stap)