selftests/sched_ext: Add SCX_ASSERT_ALIVE and adopt it

A scheduler that dies mid-test freezes the state that the test is
about to assert on, so the assertions can pass vacuously. Add
SCX_ASSERT_ALIVE(), which fails the test with the recorded exit kind,
exit code and message, and use it in maximal, create_dsq and
init_enable_count. Existing open-coded checks keep their goto-based
cleanup and are not converted. init_enable_count also clears the uei
between its two attach cycles, since the clean unregister of the first
cycle would otherwise trip the check of the second.

Signed-off-by: Tao Cui <cuitao@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

0 files changed, 0 insertions, 0 deletions