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([60.176.129.123]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74eb9f25269sm2690418b3a.107.2025.07.10.09.27.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jul 2025 09:27:48 -0700 (PDT) From: KaFai Wan To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, mykolal@fb.com, shuah@kernel.org, mannkafai@gmail.com, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next 3/3] selftests/bpf: Add selftest for attaching tracing to __btf_id functions Date: Fri, 11 Jul 2025 00:27:17 +0800 Message-ID: <20250710162717.3808020-4-mannkafai@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250710162717.3808020-1-mannkafai@gmail.com> References: <20250710162717.3808020-1-mannkafai@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The reuslt: $ tools/testing/selftests/bpf/test_progs --name=3Dtracing_btf_ids #467/1 tracing_btf_ids/btf_ids:OK #467 tracing_btf_ids:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: KaFai Wan --- .../selftests/bpf/prog_tests/tracing_btf_ids.c | 16 ++++++++++++++++ .../selftests/bpf/progs/tracing_btf_ids.c | 15 +++++++++++++++ 2 files changed, 31 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/tracing_btf_ids.c create mode 100644 tools/testing/selftests/bpf/progs/tracing_btf_ids.c diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_btf_ids.c b/too= ls/testing/selftests/bpf/prog_tests/tracing_btf_ids.c new file mode 100644 index 000000000000..b45b9ac3630c --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/tracing_btf_ids.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include "tracing_btf_ids.skel.h" + +void test_tracing_btf_ids(void) +{ + int btf_id; + + // `migrate_disable` depends on `CONFIG_SMP`, may not exists + btf_id =3D libbpf_find_vmlinux_btf_id("migrate_disable", BPF_TRACE_FENTRY= ); + if (btf_id <=3D 0) + return; + + RUN_TESTS(tracing_btf_ids); +} diff --git a/tools/testing/selftests/bpf/progs/tracing_btf_ids.c b/tools/te= sting/selftests/bpf/progs/tracing_btf_ids.c new file mode 100644 index 000000000000..92a7f2e9fb89 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tracing_btf_ids.c @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include "bpf_misc.h" + +char _license[] SEC("license") =3D "GPL"; + +SEC("fentry/migrate_disable") +__failure __msg("Attaching tracing to __btf_id function 'migrate_disable' = is rejected.") +int BPF_PROG(btf_ids) +{ + return 0; +} --=20 2.43.0