From: Tao Chen <chen.dylane@linux.dev>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org,
yonghong.song@linux.dev, john.fastabend@gmail.com,
kpsingh@kernel.org, sdf@fomichev.me, qmo@kernel.org,
jolsa@kernel.org
Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
Tao Chen <chen.dylane@linux.dev>
Subject: [PATCH bpf-next 4/5] bpf: Add cookie in fdinfo for tracing
Date: Sat, 7 Jun 2025 00:58:17 +0800 [thread overview]
Message-ID: <20250606165818.3394397-4-chen.dylane@linux.dev> (raw)
In-Reply-To: <20250606165818.3394397-1-chen.dylane@linux.dev>
Add cookie in fdinfo for tracing, the info as follows:
link_type: tracing
link_id: 6
prog_tag: 9dfdf8ef453843bf
prog_id: 35
attach_type: 25
target_obj_id: 1
target_btf_id: 60355
cookie: 9007199254740992
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
---
kernel/bpf/syscall.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 4c0ac083518..d6eba1339ad 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3403,10 +3403,12 @@ static void bpf_tracing_link_show_fdinfo(const struct bpf_link *link,
seq_printf(seq,
"attach_type:\t%d\n"
"target_obj_id:\t%u\n"
- "target_btf_id:\t%u\n",
+ "target_btf_id:\t%u\n"
+ "cookie:\t%llu\n",
tr_link->attach_type,
target_obj_id,
- target_btf_id);
+ target_btf_id,
+ tr_link->link.cookie);
}
static int bpf_tracing_link_fill_link_info(const struct bpf_link *link,
--
2.43.0
next prev parent reply other threads:[~2025-06-06 16:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-06 16:58 [PATCH bpf-next 1/5] bpf: Add cookie to tracing bpf_link_info Tao Chen
2025-06-06 16:58 ` [PATCH bpf-next 2/5] selftests/bpf: Add cookies check for tracing fill_link_info test Tao Chen
2025-06-06 16:58 ` [PATCH bpf-next 3/5] bpftool: Display cookie for tracing link probe Tao Chen
2025-06-06 16:58 ` Tao Chen [this message]
2025-06-06 16:58 ` [PATCH bpf-next 5/5] bpf: Add cookie in fdinfo for raw_tp Tao Chen
2025-06-09 23:50 ` [PATCH bpf-next 1/5] bpf: Add cookie to tracing bpf_link_info patchwork-bot+netdevbpf
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