util/cpt_upgraders/smt-interrupts.py

   1 # Upgrade single-threaded checkpoints to be properly supported with SMT.
   2 # SMT adds per-thread interrupts.  Thus we must move the interrupt status
   3 # from the CPU and into the execution context.
   4 def upgrader(cpt):
   5     for sec in cpt.sections():
   6         import re
   7
   8         re_cpu_match = re.match('^(.*sys.*\.cpu[^._]*)$', sec)
   9         if re_cpu_match != None:
  10             interrupts = cpt.get(sec, 'interrupts')
  11             intStatus = cpt.get(sec, 'intStatus')
  12
  13             cpu_name = re_cpu_match.group(1)
  14
  15             cpt.set(cpu_name + ".xc.0", 'interrupts', interrupts)
  16             cpt.set(cpu_name + ".xc.0", 'intStatus', intStatus)
  17
  18             cpt.remove_option(sec, 'interrupts')
  19             cpt.remove_option(sec, 'intStatus')