dpdk/buildtools/get-numa-count.py
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   1#!/usr/bin/env python3
   2# SPDX-License-Identifier: BSD-3-Clause
   3# Copyright (c) 2021 PANTHEON.tech s.r.o.
   4
   5import ctypes
   6import glob
   7import os
   8import subprocess
   9import re
  10
  11if os.name == 'posix':
  12    if os.path.isdir('/sys/devices/system/node'):
  13        numa_nodes = glob.glob('/sys/devices/system/node/node*')
  14        numa_nodes.sort(key=lambda l: int(re.findall('\d+', l)[0]))
  15        print(int(os.path.basename(numa_nodes[-1])[4:]) + 1)
  16    else:
  17        subprocess.run(['sysctl', '-n', 'vm.ndomains'], check=False)
  18
  19elif os.name == 'nt':
  20    libkernel32 = ctypes.windll.kernel32
  21
  22    numa_count = ctypes.c_ulong()
  23
  24    libkernel32.GetNumaHighestNodeNumber(ctypes.pointer(numa_count))
  25    print(numa_count.value + 1)
  26