MFC r203727:
MFC r203727:

  Add an SDT provider for "vnet"s along with probes for vnet_alloc
  and vnet_destroy.
  Use the line number rather than NULL as dummy argument.

  Note: the fbt provider does not reliably provide :return probes
  (depending on optimization levels used at compile time) making
  it unusable for scripts to generate complete call-traces with
  well defined boundaries over allocations or destructions of
  virtual network stacks.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase