ubuntu_ltp_controllers:cpuset_hotplug: write error: Operation not supported

[Stefan Bader]

Seen on mcdivitt35-kernel.arm64 with xenial:linux-hwe(4.15) for sru-20210927. This is the first time ltp controllers are broken out, and it does not look like a kernel problem...

  Running tests.......
  cpuset_hotplug 1 TINFO: CPUs are numbered continuously starting at 0 (0-7)
  cpuset_hotplug 1 TINFO: Nodes are numbered continuously starting at 0 (0)
  cpuset_hotplug 1 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 1 TFAIL: CPU#1 failed.
  cpuset_hotplug 3 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 3 TFAIL: setup test environment(offline CPU#1) failed
  cpuset_hotplug 5 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 5 TFAIL: CPU#1 failed.
  cpuset_hotplug 7 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 7 TFAIL: CPU#1 failed.
  cpuset_hotplug 9 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 9 TFAIL: CPU#1 failed.
  cpuset_hotplug 11 TINFO: /bin/echo: write error: Operation not supported
  cpuset_hotplug 11 TFAIL: setup test environment(offline CPU#1) failed

[Po-Hsu Lin (cypressyew)]

Hi Stefan,
thanks for the report.

This test was split out from ubuntu_ltp, which was blacklisted on Xenial. Therefore this ubuntu_ltp_controllers test should be disabled on Xenial as well.

Sorry for the confusion.

https://kernel.ubuntu.com/git/ubuntu/autotest-client-tests.git/commit/?id=173f3f54655d4b5990639f9761e974cb9964cc9a

[Po-Hsu Lin (cypressyew)]

We have this test re-enabled on older releases, this failure can be found on X-4.4 ARM64 mcdivitt34-kernel as well.