tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_hang.py

   1 #!/usr/bin/env python3
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 import subprocess
   5 import time
   6
   7 import _damon_sysfs
   8
   9 def main():
  10     proc = subprocess.Popen(['sleep', '2'])
  11     kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond(
  12             contexts=[_damon_sysfs.DamonCtx(
  13                 ops='vaddr',
  14                 targets=[_damon_sysfs.DamonTarget(pid=proc.pid)],
  15                 schemes=[_damon_sysfs.Damos(
  16                     access_pattern=_damon_sysfs.DamosAccessPattern(
  17                         nr_accesses=[200, 200]))] # schemes
  18                 )] # contexts
  19             )]) # kdamonds
  20
  21     err = kdamonds.start()
  22     if err != None:
  23         print('kdamond start failed: %s' % err)
  24         exit(1)
  25
  26     while proc.poll() == None:
  27         err = kdamonds.kdamonds[0].update_schemes_tried_bytes()
  28         if err != None:
  29             print('tried bytes update failed: %s' % err)
  30             exit(1)
  31
  32 if __name__ == '__main__':
  33     main()