Andrea Righi dc05051dd1 selftests/sched_ext: Fix exit selftest hang on UP ...

[ Upstream commit 7980ad7e4c ]

On single-CPU systems, ops.select_cpu() is never called, causing the
EXIT_SELECT_CPU test case to wait indefinitely.

Avoid the stall by skipping this specific sub-test when only one CPU is
available.

Reported-by: Phil Auld <pauld@redhat.com>
Fixes: a5db7817af ("sched_ext: Add selftests")
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Reviewed-by: Phil Auld <pauld@redhat.com>
Tested-by: Phil Auld <pauld@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-07-24 08:56:30 +02:00

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.gitignore

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config

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create_dsq.bpf.c

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create_dsq.c

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ddsp_bogus_dsq_fail.bpf.c

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ddsp_bogus_dsq_fail.c

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ddsp_vtimelocal_fail.bpf.c

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ddsp_vtimelocal_fail.c

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dsp_local_on.bpf.c

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dsp_local_on.c

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enq_last_no_enq_fails.bpf.c

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enq_last_no_enq_fails.c

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enq_select_cpu_fails.bpf.c

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enq_select_cpu_fails.c

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exit_test.h

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exit.bpf.c

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exit.c

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hotplug_test.h

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hotplug.bpf.c

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hotplug.c

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init_enable_count.bpf.c

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init_enable_count.c

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Makefile

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maximal.bpf.c

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maximal.c

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maybe_null_fail_dsp.bpf.c

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maybe_null_fail_yld.bpf.c

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maybe_null.bpf.c

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maybe_null.c

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minimal.bpf.c

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minimal.c

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prog_run.bpf.c

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prog_run.c

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reload_loop.c

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runner.c

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scx_test.h

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select_cpu_dfl_nodispatch.bpf.c

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select_cpu_dfl_nodispatch.c

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select_cpu_dfl.bpf.c

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select_cpu_dfl.c

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select_cpu_dispatch_bad_dsq.bpf.c

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select_cpu_dispatch_bad_dsq.c

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select_cpu_dispatch_dbl_dsp.bpf.c

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select_cpu_dispatch_dbl_dsp.c

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select_cpu_dispatch.bpf.c

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select_cpu_dispatch.c

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select_cpu_vtime.bpf.c

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select_cpu_vtime.c

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test_example.c

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util.c

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util.h

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