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

NAME
probe::vm.kfree - Fires when kfree is requested
SYNOPSIS
vm.kfree
VALUES
ptr
pointer to the kmemory allocated which is returned by kmalloc
name
name of the probe point
call_site
address of the function calling this kmemory function
caller_function
name of the caller function.
SEE ALSO
tapset::memory(3stap)
SystemTap Tapset Reference March 2016 PROBE::VM.KFREE(3stap)