From: Yonghong Song <yonghong.song@linux.dev>
To: bpf@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
kernel-team@fb.com, Martin KaFai Lau <martin.lau@kernel.org>
Subject: Re: [PATCH bpf-next 0/4] selftests/bpf: Fix a couple of test failures with LTO kernel
Date: Sat, 2 Mar 2024 08:49:13 -0800 [thread overview]
Message-ID: <8188fb77-c4b2-4418-9956-f1cd0408d26c@linux.dev> (raw)
In-Reply-To: <20240302162044.1498741-1-yonghong.song@linux.dev>
On 3/2/24 8:20 AM, Yonghong Song wrote:
> With a LTO kernel built with clang, I encountered two test failures,
> ksyms and kprobe_multi_bench_attach/kernel. Both test failures are
> due to static variable/function renaming due to cross-file inlining.
> The solution is to either skip the test or filter out those renamed
> functions. A helper function check_lto_kernel() is introduced to
> identify whether the underlying kernel is built with LTO or not.
> Please see each individual patches for details.
>
> Yonghong Song (4):
> selftests/bpf: Replace CHECK with ASSERT macros for ksyms test
> selftests/bpf: Add check_lto_kernel() helper
> selftests/bpf: Fix possible ksyms test failure with LTO kernel
> selftests/bpf: Fix possible kprobe_multi_bench_attach test failure
> with LTO kernel
>
> .../bpf/prog_tests/kprobe_multi_test.c | 7 +++
> .../testing/selftests/bpf/prog_tests/ksyms.c | 42 +++++++++--------
> tools/testing/selftests/bpf/testing_helpers.c | 47 +++++++++++++++++++
> tools/testing/selftests/bpf/testing_helpers.h | 1 +
> 4 files changed, 78 insertions(+), 19 deletions(-)
>
Please ignore this one. It is my git send script issue with Message-Id vs. Message-ID.
Will post actual series soon.
next prev parent reply other threads:[~2024-03-02 16:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-02 16:20 [PATCH bpf-next 0/4] selftests/bpf: Fix a couple of test failures with LTO kernel Yonghong Song
2024-03-02 16:49 ` Yonghong Song [this message]
-- strict thread matches above, loose matches on Subject: below --
2024-03-02 16:50 Yonghong Song
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