[mainline]selftests/sched_ext: select_cpu_dfl_nodispatch test is failing.

[Samir M]

Hi,


I'm reporting a test failure in the sched_ext selftests on kernel 
version 7.0.0-rc7.


Test Details:
=============
Test Path: linux/tools/testing/selftests/sched_ext
Test Name: select_cpu_dfl_nodispatch
Command: ./runner -t select_cpu_dfl_nodispatch


Test Description:
================
The test is designed to verify the behavior of scx_bpf_select_cpu_dfl() 
in ops.select_cpu()

Failure Details:
================
The test fails with the following output:

./runner -t select_cpu_dfl_nodispatch
===== START =====
TEST: select_cpu_dfl_nodispatch
DESCRIPTION: Verify behavior of scx_bpf_select_cpu_dfl() in ops.select_cpu()
OUTPUT:
ERR: select_cpu_dfl_nodispatch.c:53
Expected skel->bss->saw_local to be true (0)
not ok 1 select_cpu_dfl_nodispatch #
=====  END  =====

RESULTS:
PASSED:  0
SKIPPED: 0
FAILED:  1

Reproduction:
=============
1. Clone the upstream Linux kernel repository
2. Enable CONFIG_SCHED_CLASS_EXT in kernel configuration
3. Build and boot the kernel with sched_ext enabled
4. Navigate to linux/tools/testing/selftests/sched_ext
5. Build the selftests: make
6. Run the test: ./runner -t select_cpu_dfl_nodispatch

Environment:
============
Kernel Version: 7.0.0-rc7
Architecture: ppc64le

Could you please investigate this test failure? I'm happy to provide 
additional
information or test on different configurations if needed.

If you happen to fix the above issue, then please add below tag.
Reported-by: Samir M <samir@xxxxxxxxxxxxx>

Regards,
Samir.