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Message-Id: <20250603022610.3005963-3-chen.dylane@linux.dev>
Date: Tue, 3 Jun 2025 10:26:10 +0800
From: Tao Chen <chen.dylane@...ux.dev>
To: ast@...nel.org,
daniel@...earbox.net,
andrii@...nel.org,
martin.lau@...ux.dev,
eddyz87@...il.com,
song@...nel.org,
yonghong.song@...ux.dev,
john.fastabend@...il.com,
kpsingh@...nel.org,
sdf@...ichev.me,
qmo@...nel.org,
jolsa@...nel.org
Cc: bpf@...r.kernel.org,
linux-kernel@...r.kernel.org,
Tao Chen <chen.dylane@...ux.dev>
Subject: [PATCH bpf-next v2 3/3] bpftool: Display cookie for raw_tp link probe
Display cookie for raw_tp link probe, in plain mode:
#bpftool link
22: raw_tracepoint prog 14
tp 'sys_enter' cookie 23925373020405760
pids test_progs(176)
And in json mode:
#bpftool link -j | jq
[
{
"id": 47,
"type": "raw_tracepoint",
"prog_id": 79,
"tp_name": "sys_enter",
"cookie": 23925373020405760,
"pids": [
{
"pid": 274,
"comm": "test_progs"
}
]
}
]
Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
---
tools/bpf/bpftool/link.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index 52fd2c9fac..bd37f364be 100644
--- a/tools/bpf/bpftool/link.c
+++ b/tools/bpf/bpftool/link.c
@@ -484,6 +484,7 @@ static int show_link_close_json(int fd, struct bpf_link_info *info)
case BPF_LINK_TYPE_RAW_TRACEPOINT:
jsonw_string_field(json_wtr, "tp_name",
u64_to_ptr(info->raw_tracepoint.tp_name));
+ jsonw_lluint_field(json_wtr, "cookie", info->raw_tracepoint.cookie);
break;
case BPF_LINK_TYPE_TRACING:
err = get_prog_info(info->prog_id, &prog_info);
@@ -876,6 +877,8 @@ static int show_link_close_plain(int fd, struct bpf_link_info *info)
case BPF_LINK_TYPE_RAW_TRACEPOINT:
printf("\n\ttp '%s' ",
(const char *)u64_to_ptr(info->raw_tracepoint.tp_name));
+ if (info->raw_tracepoint.cookie)
+ printf("cookie %llu ", info->raw_tracepoint.cookie);
break;
case BPF_LINK_TYPE_TRACING:
err = get_prog_info(info->prog_id, &prog_info);
--
2.43.0
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