From: Qiliang Yuan <odys.yuan@gmail.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Eduard Zingerman <eddyz87@gmail.com>,
Kumar Kartikeya Dwivedi <memxor@gmail.com>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
Jiri Olsa <jolsa@kernel.org>,
Emil Tsalapatis <emil@etsalapatis.com>,
Ihor Solodrai <ihor.solodrai@linux.dev>,
Shuah Khan <shuah@kernel.org>
Cc: bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-kernel@vger.kernel.org, Qiliang Yuan <odys.yuan@gmail.com>
Subject: [PATCH bpf-next 0/2] selftests/bpf: Skip libarena when arena spin locks are unsupported
Date: Fri, 09 Oct 2026 09:49:50 +0800 [thread overview]
Message-ID: <20261009-selftests-bpf-libarena-nr-cpus-v1-0-e726ccc66fc6@gmail.com> (raw)
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 <odys.yuan@gmail.com>
---
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 <odys.yuan@gmail.com>
next reply other threads:[~2026-10-09 1:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-09 1:49 Qiliang Yuan [this message]
2026-10-09 1:49 ` [PATCH bpf-next 1/2] selftests/bpf: Return the lock error from buddy_init() of libarena Qiliang Yuan
2026-10-09 2:37 ` bot+bpf-ci
2026-10-09 1:49 ` [PATCH bpf-next 2/2] selftests/bpf: Skip libarena on kernels with too many possible CPUs Qiliang Yuan
2026-10-09 2:37 ` bot+bpf-ci
2026-10-14 19:51 ` [PATCH bpf-next 0/2] selftests/bpf: Skip libarena when arena spin locks are unsupported Emil Tsalapatis
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