old_contents: # project
  from checks import AgentCheck
  
  VM_COUNTS = {
      'pgpgin': 'pages.in',
      'pgpgout': 'pages.out',
      'pswpin': 'pages.swapped_in',
      'pswpout': 'pages.swapped_out',
      'pgfault': 'pages.faults',
      'pgmajfault': 'pages.major_faults'
  }
  
  class MoreLinuxVMCheck(AgentCheck):
      def check(self, instance):
          tags = instance.get('tags', [])
  
          enabled_metrics = instance.get('enabled_metrics', list(VM_COUNTS.keys()))
  
          with open('/proc/vmstat', 'r') as vm_info:
              content = [line.strip().split() for line in vm_info.readlines()]
  
              for line in content:
                  if line[0] in VM_COUNTS:
                      self.monotonic_count("system.linux.vm.{0}".format(VM_COUNTS[line[0]]), int(line[1]), tags=tags)
  
new_contents: # project
  from checks import AgentCheck
  
  VM_COUNTS = {
      'pgpgin': 'pages.in',
      'pgpgout': 'pages.out',
      'pswpin': 'pages.swapped_in',
      'pswpout': 'pages.swapped_out',
      'pgfault': 'pages.faults',
      'pgmajfault': 'pages.major_faults'
  }
  
  class MoreLinuxVMCheck(AgentCheck):
      def check(self, instance):
          tags = instance.get('tags', [])
  
          enabled_metrics = instance.get('enabled_metrics', list(VM_COUNTS.keys()))
  
          with open('/proc/vmstat', 'r') as vm_info:
              content = [line.strip().split() for line in vm_info.readlines()]
  
              for line in content:
                  if line[0] in enabled_metrics:
                      self.monotonic_count("system.linux.vm.{0}".format(VM_COUNTS[line[0]]), int(line[1]), tags=tags)
  
subject: Fix bug that was causing this to not even work at all