selftests/sched_ext: Fix rt_stall runner abort

rt_stall uses ksft_exit_fail() and friends, which call exit(), so a
single rt_stall failure or a fork() error kills the runner and skips
the remaining tests.

Drop the ksft_* usage, report the handshake failure back from
wait_ready(), and let run() return SCX_TEST_FAIL so the runner records
the failure and moves on. Since the test now returns rather than
exiting, route every path after the forks through one cleanup label, so
a failure cannot leave the SCHED_FIFO task spinning on CORE_ID for the
tests that follow.

Also destroy the struct_ops link before checking the exit kind, so the
link is released when that check fails.

Fixes: be621a76341c ("selftests/sched_ext: Add test for sched_ext dl_server")
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

0 files changed, 0 insertions, 0 deletions