NEWS

   1 * What's new since version 0.5.12?
   2
   3 - When running in -p4 (compile-only) mode, the compiled .ko file name
   4   is printed on standard output.
   5
   6
   7 * What's new since version 0.5.10?
   8
   9 - Offline processing of debugging information, enabling general
  10   cross-compilation of probe scripts to remote hosts, without
  11   requiring identical module/memory layout.  This slows down
  12   compilation/translation somewhat.
  13
  14 - Kernel symbol table data is loaded by staprun at startup time
  15   rather than compiled into the module.
  16
  17 - Support the "limit" keyword for foreach iterations:
  18     foreach ([x,y] in ary limit 5) { ... }
  19   This implicitly exits after the fifth iteration.  It also enables
  20   more efficient key/value sorting.
  21
  22 - Support the "maxactive" keyword for return probes:
  23     probe kernel.function("sdfsdf").maxactive(848) { ... }
  24   This allows up to 848 concurrently outstanding entries to
  25   the sdfsdf function before one returns.  The default maxactive
  26   number is smaller, and can result in missed return probes.
  27
  28 - Support accessing of saved function arguments from within
  29   return probes.  These values are saved by a synthesized
  30   function-entry probe.
  31
  32 - Add substantial version/architecture checking in compiled probes to
  33   assert correct installation of debugging information and correct
  34   execution on a compatible kernel.
  35
  36 - Add probe-time checking for sufficient free stack space when probe
  37   handlers are invoked, as a safety improvement.
  38
  39 - Add an optional numeric parameter for begin/end probe specifications,
  40   to order their execution.
  41      probe begin(10) { } /* comes after */ probe begin(-10) {}
  42
  43 - Add an optional array size declaration, which is handy for very small
  44   or very large ones.
  45      global little[5], big[20000]
  46
  47 - Include some example scripts along with the documentation.
  48
  49 - Change the start-time allocation of probe memory to avoid causing OOM
  50   situations, and to abort cleanly if free kernel memory is short.
  51
  52 - Automatically use the kernel DWARF unwinder, if present, for stack
  53   tracebacks.
  54
  55 - Many minor bug fixes, performance, tapset, and error message
  56   improvements.