From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B43F3264F5; Wed, 4 Mar 2026 22:25:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772663119; cv=none; b=BKgA0OwqVHwVUOmkjLSNqpEytsoL7i9nZIjWX5qg7EnPY5zGPw7W97+7XYRuzR8QKpcWd7Gi1hR/Sy39PPUZ/N4GruLyGNREGaAdTyR/kHD+mwI4mY3bnH7LWt4ajoA4C43VCdmWpvQ6lJUmSyISGjaeCi9MenbLuRI3QlZ70cg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772663119; c=relaxed/simple; bh=PT77UrZbckmM6fk4qBEs7K6o5nDExOVO2tNGoHHUZuI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XcsjcgYbZmpk6JxDH88vQZFDB2b+ro2NJQLTcuHkvAGbzWNlXWvG4K+m511aQx5zxlC0r6iYACsD0pHxXFW8NxpW9QAVqJsFUfaEbaKMMS6xqGjwoZhiKbEsiQ+UZOWP9TKKt6NH3eEslaIKLIar+n/+eCdoBL7smCOkB+DEsPQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EEpkOoon; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EEpkOoon" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBD1AC4CEF7; Wed, 4 Mar 2026 22:25:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772663118; bh=PT77UrZbckmM6fk4qBEs7K6o5nDExOVO2tNGoHHUZuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EEpkOoonWPK2tH+N818h4NfF+XQ3fypOwhFDfRu2PbYdJHIImfEhU7GCIBcWT5Y96 ZpM5tIVpKlXWYaEV4jciqHI0UHtZsIDupj4zwFYTKIaea70UMxCaFq16Td10d089bn Qhj5Wig7A0g3e035H6qvxdExhpaGzkKJwYBIQ5H4dtViX3l67hAi69vUtUWa5PsNSI RyOojj81IeFRwkwmLYiUevzaEV7dWWXNmX9batsFCKFgGWyJVNfuTaOA2JN6oG3xFY t50Q1Z1eD63X30BfhkyMx0YCeYjCSa8xMEcE5KzberXnpKoVnn1JyGeykH/Dtg2Htk 8XBeRjfU5qUDg== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , Menglong Dong , Steven Rostedt Subject: [PATCHv2 bpf-next 20/23] selftests/bpf: Add tracing multi session test Date: Wed, 4 Mar 2026 23:21:38 +0100 Message-ID: <20260304222141.497203-21-jolsa@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260304222141.497203-1-jolsa@kernel.org> References: <20260304222141.497203-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adding tests for tracing multi link session. Signed-off-by: Jiri Olsa --- tools/testing/selftests/bpf/Makefile | 4 ++- .../selftests/bpf/prog_tests/tracing_multi.c | 31 +++++++++++++++++++ .../bpf/progs/tracing_multi_session_attach.c | 27 ++++++++++++++++ 3 files changed, 61 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index ffcf7e120e5f..2d1680b83fe9 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -486,7 +486,8 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ test_subskeleton.skel.h test_subskeleton_lib.skel.h \ test_usdt.skel.h tracing_multi.skel.h \ tracing_multi_module.skel.h \ - tracing_multi_intersect.skel.h + tracing_multi_intersect.skel.h \ + tracing_multi_session.skel.h LSKELS := fexit_sleep.c trace_printk.c trace_vprintk.c map_ptr_kern.c \ core_kern.c core_kern_overflow.c test_ringbuf.c \ @@ -515,6 +516,7 @@ xdp_features.skel.h-deps := xdp_features.bpf.o tracing_multi.skel.h-deps := tracing_multi_attach.bpf.o tracing_multi_check.bpf.o tracing_multi_module.skel.h-deps := tracing_multi_attach_module.bpf.o tracing_multi_check.bpf.o tracing_multi_intersect.skel.h-deps := tracing_multi_intersect_attach.bpf.o tracing_multi_check.bpf.o +tracing_multi_session.skel.h-deps := tracing_multi_session_attach.bpf.o tracing_multi_check.bpf.o LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c index a0266dd5670f..3a55a2aed9a0 100644 --- a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c +++ b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c @@ -7,6 +7,7 @@ #include "tracing_multi.skel.h" #include "tracing_multi_module.skel.h" #include "tracing_multi_intersect.skel.h" +#include "tracing_multi_session.skel.h" #include "trace_helpers.h" static __u64 bpf_fentry_test_cookies[] = { @@ -442,6 +443,34 @@ static void test_intersect(void) tracing_multi_intersect__destroy(skel); } +static void test_session(void) +{ + LIBBPF_OPTS(bpf_test_run_opts, topts); + struct tracing_multi_session *skel; + int err, prog_fd; + + skel = tracing_multi_session__open_and_load(); + if (!ASSERT_OK_PTR(skel, "tracing_multi_session__open_and_load")) + return; + + skel->bss->pid = getpid(); + + err = tracing_multi_session__attach(skel); + if (!ASSERT_OK(err, "tracing_multi_session__attach")) + goto cleanup; + + prog_fd = bpf_program__fd(skel->progs.test_session); + err = bpf_prog_test_run_opts(prog_fd, &topts); + ASSERT_OK(err, "test_run"); + + ASSERT_EQ(skel->bss->test_result_fentry, 10, "test_result_fentry"); + /* extra count for test_result_fexit cookie */ + ASSERT_EQ(skel->bss->test_result_fexit, 20, "test_result_fexit"); + +cleanup: + tracing_multi_session__destroy(skel); +} + void test_tracing_multi_test(void) { #ifndef __x86_64__ @@ -465,4 +494,6 @@ void test_tracing_multi_test(void) test_intersect(); if (test__start_subtest("cookies")) test_link_api_ids(true); + if (test__start_subtest("session")) + test_session(); } diff --git a/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c b/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c new file mode 100644 index 000000000000..9d717018a00f --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tracing_multi_session_attach.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include + +char _license[] SEC("license") = "GPL"; + +__hidden extern int tracing_multi_arg_check(__u64 *ctx, __u64 *test_result, bool is_return); + +__u64 test_result_fentry = 0; +__u64 test_result_fexit = 0; + +SEC("fsession.multi/bpf_fentry_test*") +int BPF_PROG(test_session) +{ + volatile __u64 *cookie = bpf_session_cookie(ctx); + + if (bpf_session_is_return(ctx)) { + tracing_multi_arg_check(ctx, &test_result_fexit, true); + /* extra count for test_result_fexit cookie */ + test_result_fexit += *cookie == 0xbeafbeafbeafbeaf; + } else { + tracing_multi_arg_check(ctx, &test_result_fentry, false); + *cookie = 0xbeafbeafbeafbeaf; + } + return 0; +} -- 2.53.0