docs: def _bsd_memdata(osdata):
      '''
      Return the memory information for BSD-like systems
      '''
      grains = {'mem_total': 0, 'swap_total': 0}
  
      sysctl = salt.utils.path.which('sysctl')
      if sysctl:
          mem = __salt__['cmd.run']('{0} -n hw.physmem'.format(sysctl))
          if osdata['kernel'] == 'NetBSD' and mem.startswith('-'):
              mem = __salt__['cmd.run']('{0} -n hw.physmem64'.format(sysctl))
          grains['mem_total'] = int(mem) // 1024 // 1024
  
          if osdata['kernel'] in ['OpenBSD', 'NetBSD']:
              swapctl = salt.utils.path.which('swapctl')
              swap_data = __salt__['cmd.run']('{0} -sk'.format(swapctl))
              if swap_data == 'no swap devices configured':
                  swap_total = 0
              else:
                  swap_total = swap_data.split(' ')[1]
          else:
              swap_total = __salt__['cmd.run']('{0} -n vm.swap_total'.format(sysctl))
          grains['swap_total'] = int(swap_total) // 1024 // 1024
      return grains