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[Po-Hsu Lin <2027770@xxxxxxxxxxxxxxxxxx>]

Test result (failed tests cases) with 30 min timeout on node janbi with
J-realtime.

** Attachment added: "janbi-30min.log"
   https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2027770/+attachment/5687098/+files/janbi-30min.log

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https://bugs.launchpad.net/bugs/2027770

Title:
  Improve test granularity of ubuntu_kselftests_ftrace

Status in ubuntu-kernel-tests:
  In Progress

Bug description:
  Currently we have just a "setup", "ftrace-build" and "ftracetest"
  inside this test suite.

  All ~100 sub test cases are being testing under the "ftracetest" test
  case. There is a summary in the end of the report, but test reviewer
  still need to look into the detail and search for failing sub-tests.

  Especially we have a flaky traceon/off test that's failing from time
  to time (bug 1837040), we have this issue hinted, but it’s unsafe to
  make it a permanent hint as ftracetest contains around 100 tests. If
  we hint it directly we might have some regression slipped through.

  It will be great to break them down. So that we can see which test
  case is failing right from the "Cases" section on the test report
  page. And  we can hint the failing one more precisely and without
  interfering other tests.

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