From: Jiri Olsa <jolsa@kernel.org>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
Martin KaFai Lau <kafai@fb.com>,
Eduard Zingerman <eddyz87@gmail.com>,
Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
Menglong Dong <menglong8.dong@gmail.com>,
Steven Rostedt <rostedt@kernel.org>
Subject: [PATCH bpf-next 15/17] selftests/bpf: Add tracing multi session test
Date: Fri, 20 Feb 2026 11:06:47 +0100 [thread overview]
Message-ID: <20260220100649.628307-16-jolsa@kernel.org> (raw)
In-Reply-To: <20260220100649.628307-1-jolsa@kernel.org>
Adding tests for tracing multi link session.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
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 0cbc9bcb9a2e..b415d64bf0d1 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -482,7 +482,8 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
linked_vars.skel.h linked_maps.skel.h \
test_subskeleton.skel.h test_subskeleton_lib.skel.h \
test_usdt.skel.h tracing_multi.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 \
@@ -510,6 +511,7 @@ xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
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_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 1bab4c3ea808..3d9327b80e88 100644
--- a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
@@ -6,6 +6,7 @@
#include "bpf/libbpf_internal.h"
#include "tracing_multi.skel.h"
#include "tracing_multi_intersect.skel.h"
+#include "tracing_multi_session.skel.h"
#include "trace_helpers.h"
static __u64 bpf_fentry_test_cookies[] = {
@@ -311,6 +312,34 @@ 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__
@@ -328,4 +357,6 @@ 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 <vmlinux.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+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;
+}
--
2.52.0
next prev parent reply other threads:[~2026-02-20 10:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-20 10:06 [PATCH bpf-next 00/17] bpf: tracing_multi link Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 01/17] ftrace: Add ftrace_hash_count function Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines Jiri Olsa
2026-02-20 10:57 ` bot+bpf-ci
2026-02-22 14:33 ` Jiri Olsa
2026-02-20 19:58 ` Alexei Starovoitov
2026-02-22 14:34 ` Jiri Olsa
2026-02-23 19:35 ` Alexei Starovoitov
2026-02-24 12:27 ` Jiri Olsa
2026-02-24 17:13 ` Alexei Starovoitov
2026-02-20 10:06 ` [PATCH bpf-next 03/17] bpf: Add struct bpf_trampoline_ops object Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object Jiri Olsa
2026-02-20 10:58 ` bot+bpf-ci
2026-02-22 14:34 ` Jiri Olsa
2026-02-20 19:52 ` kernel test robot
2026-02-20 21:05 ` kernel test robot
2026-02-21 3:00 ` kernel test robot
2026-02-20 10:06 ` [PATCH bpf-next 05/17] bpf: Factor fsession link to use struct bpf_tramp_node Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 06/17] bpf: Add multi tracing attach types Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 07/17] bpf: Add bpf_trampoline_multi_attach/detach functions Jiri Olsa
2026-02-20 10:57 ` bot+bpf-ci
2026-02-22 14:34 ` Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 08/17] bpf: Add support for tracing multi link Jiri Olsa
2026-02-20 10:57 ` bot+bpf-ci
2026-02-22 14:35 ` Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 09/17] bpf: Add support for tracing_multi link cookies Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session Jiri Olsa
2026-02-20 10:57 ` bot+bpf-ci
2026-02-22 14:35 ` Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 11/17] libbpf: Add support to create tracing multi link Jiri Olsa
2026-02-20 10:57 ` bot+bpf-ci
2026-02-22 14:36 ` Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 12/17] selftests/bpf: Add tracing multi skel/pattern/ids attach tests Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 13/17] selftests/bpf: Add tracing multi intersect tests Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 14/17] selftests/bpf: Add tracing multi cookies test Jiri Olsa
2026-02-20 10:06 ` Jiri Olsa [this message]
2026-02-20 10:06 ` [PATCH bpf-next 16/17] selftests/bpf: Add tracing multi attach fails test Jiri Olsa
2026-02-20 10:06 ` [PATCH bpf-next 17/17] selftests/bpf: Add tracing multi attach benchmark test Jiri Olsa
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260220100649.628307-16-jolsa@kernel.org \
--to=jolsa@kernel.org \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=eddyz87@gmail.com \
--cc=kafai@fb.com \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=menglong8.dong@gmail.com \
--cc=rostedt@kernel.org \
--cc=songliubraving@fb.com \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox