From: Menglong Dong <menglong8.dong@gmail.com>
To: ast@kernel.org, jolsa@kernel.org
Cc: 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, mattbobrowski@google.com,
rostedt@goodmis.org, mhiramat@kernel.org,
mathieu.desnoyers@efficios.com, leon.hwang@linux.dev,
jiang.biao@linux.dev, bpf@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Subject: [PATCH bpf-next v2 06/10] libbpf: add support for tracing session
Date: Wed, 22 Oct 2025 16:01:55 +0800 [thread overview]
Message-ID: <20251022080159.553805-7-dongml2@chinatelecom.cn> (raw)
In-Reply-To: <20251022080159.553805-1-dongml2@chinatelecom.cn>
Add BPF_TRACE_SESSION to libbpf and bpftool.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
---
tools/bpf/bpftool/common.c | 1 +
tools/lib/bpf/bpf.c | 2 ++
tools/lib/bpf/libbpf.c | 3 +++
3 files changed, 6 insertions(+)
diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index e8daf963ecef..534be6cfa2be 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -1191,6 +1191,7 @@ const char *bpf_attach_type_input_str(enum bpf_attach_type t)
case BPF_TRACE_FENTRY: return "fentry";
case BPF_TRACE_FEXIT: return "fexit";
case BPF_MODIFY_RETURN: return "mod_ret";
+ case BPF_TRACE_SESSION: return "fsession";
case BPF_SK_REUSEPORT_SELECT: return "sk_skb_reuseport_select";
case BPF_SK_REUSEPORT_SELECT_OR_MIGRATE: return "sk_skb_reuseport_select_or_migrate";
default: return libbpf_bpf_attach_type_str(t);
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 339b19797237..caed2b689068 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -794,6 +794,7 @@ int bpf_link_create(int prog_fd, int target_fd,
case BPF_TRACE_FENTRY:
case BPF_TRACE_FEXIT:
case BPF_MODIFY_RETURN:
+ case BPF_TRACE_SESSION:
case BPF_LSM_MAC:
attr.link_create.tracing.cookie = OPTS_GET(opts, tracing.cookie, 0);
if (!OPTS_ZEROED(opts, tracing))
@@ -917,6 +918,7 @@ int bpf_link_create(int prog_fd, int target_fd,
case BPF_TRACE_FENTRY:
case BPF_TRACE_FEXIT:
case BPF_MODIFY_RETURN:
+ case BPF_TRACE_SESSION:
return bpf_raw_tracepoint_open(NULL, prog_fd);
default:
return libbpf_err(err);
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index dd3b2f57082d..e582620cd097 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -115,6 +115,7 @@ static const char * const attach_type_name[] = {
[BPF_TRACE_FENTRY] = "trace_fentry",
[BPF_TRACE_FEXIT] = "trace_fexit",
[BPF_MODIFY_RETURN] = "modify_return",
+ [BPF_TRACE_SESSION] = "trace_session",
[BPF_LSM_MAC] = "lsm_mac",
[BPF_LSM_CGROUP] = "lsm_cgroup",
[BPF_SK_LOOKUP] = "sk_lookup",
@@ -9607,6 +9608,8 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("fentry.s+", TRACING, BPF_TRACE_FENTRY, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_trace),
SEC_DEF("fmod_ret.s+", TRACING, BPF_MODIFY_RETURN, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_trace),
SEC_DEF("fexit.s+", TRACING, BPF_TRACE_FEXIT, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_trace),
+ SEC_DEF("fsession+", TRACING, BPF_TRACE_SESSION, SEC_ATTACH_BTF, attach_trace),
+ SEC_DEF("fsession.s+", TRACING, BPF_TRACE_SESSION, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_trace),
SEC_DEF("freplace+", EXT, 0, SEC_ATTACH_BTF, attach_trace),
SEC_DEF("lsm+", LSM, BPF_LSM_MAC, SEC_ATTACH_BTF, attach_lsm),
SEC_DEF("lsm.s+", LSM, BPF_LSM_MAC, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_lsm),
--
2.51.1.dirty
next prev parent reply other threads:[~2025-10-22 8:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-22 8:01 [PATCH bpf-next v2 00/10] bpf: tracing session supporting Menglong Dong
2025-10-22 8:01 ` [PATCH bpf-next v2 01/10] bpf: add tracing session support Menglong Dong
2025-10-22 8:01 ` [PATCH bpf-next v2 02/10] bpf: add kfunc bpf_tracing_is_exit for TRACE_SESSION Menglong Dong
2025-10-22 8:01 ` [PATCH bpf-next v2 03/10] bpf: add kfunc bpf_fsession_cookie for TRACING SESSION Menglong Dong
2025-10-22 8:01 ` [PATCH bpf-next v2 04/10] bpf,x86: add ret_off to invoke_bpf() Menglong Dong
2025-10-22 8:01 ` [PATCH bpf-next v2 05/10] bpf,x86: add tracing session supporting for x86_64 Menglong Dong
2025-10-22 8:01 ` Menglong Dong [this message]
2025-10-22 8:01 ` [PATCH bpf-next v2 07/10] selftests/bpf: test get_func_ip for fsession Menglong Dong
2025-10-22 14:11 ` Menglong Dong
2025-10-22 8:19 ` [PATCH bpf-next v2 00/10] bpf: tracing session supporting Menglong Dong
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