LXR dpdk/buildtools/get-numa-count.py

   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
   9
  10if os.name == 'posix':
  11    if os.path.isdir('/sys/devices/system/node'):
  12        numa_nodes = glob.glob('/sys/devices/system/node/node*')
  13        numa_nodes.sort()
  14        print(int(os.path.basename(numa_nodes[-1])[4:]) + 1)
  15    else:
  16        subprocess.run(['sysctl', '-n', 'vm.ndomains'], check=False)
  17
  18elif os.name == 'nt':
  19    libkernel32 = ctypes.windll.kernel32
  20
  21    numa_count = ctypes.c_ulong()
  22
  23    libkernel32.GetNumaHighestNodeNumber(ctypes.pointer(numa_count))
  24    print(numa_count.value + 1)
  25