serial_test_libarena runs the test programs of libarena, whose buddy allocator serializes its operations with an arena spin lock.
arena_spin_lock() fails with -EOPNOTSUPP on kernels built with more than 1024 possible CPUs, as distributions commonly configure them. buddy_init() reports that as -EINVAL, and every test then fails at arena_buddy_reset. Patch 1 makes buddy_init() return the error of the lock, patch 2 skips the tests when resetting the allocator fails with -EOPNOTSUPP. Signed-off-by: Qiliang Yuan <[email protected]> --- Qiliang Yuan (2): selftests/bpf: Return the lock error from buddy_init() of libarena selftests/bpf: Skip libarena on kernels with too many possible CPUs tools/testing/selftests/bpf/libarena/src/buddy.bpf.c | 5 +++-- tools/testing/selftests/bpf/prog_tests/libarena.c | 9 +++++++++ 2 files changed, 12 insertions(+), 2 deletions(-) --- base-commit: e1d84a37cba984388988d2f1ddc84561413f0db2 change-id: 20261009-selftests-bpf-libarena-nr-cpus-50fc5dd00fe2 Best regards, -- Qiliang Yuan <[email protected]>
