fdio.infra.ansible/roles/performance_tuning/filter_plugins/main.py

   1 """Extra Ansible filters"""
   2
   3 def irqbalance_banned_cpu_mask(
   4         processor_cores, processor_count, processor_threads_per_core):
   5     """
   6     Return irqbalance CPU mask.
   7     Args:
   8         processor_cores (int): Physical processor unit.
   9         processor_counts (int): Processors per physical unit.
  10         processor_threads_per_core (int): Threads per physical unit.
  11     Returns:
  12        str: irqbalance_banned_cpus.
  13     """
  14     mask = int("1" * 128, 2)
  15
  16     for i in range(processor_count * processor_threads_per_core):
  17         mask &= ~(1 << i * processor_cores)
  18
  19     import re
  20     return ",".join(re.findall('.{1,8}', str(hex(mask))[2:]))
  21
  22
  23 class FilterModule(object):
  24     """Return filter plugin"""
  25
  26     @staticmethod
  27     def filters():
  28         """Return filter"""
  29         return {'irqbalance_banned_cpu_mask': irqbalance_banned_cpu_mask}