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bpf: Add cookie to raw_tp bpf_link_info

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After commit 68ca5d4eeb ("bpf: support BPF cookie in raw tracepoint
(raw_tp, tp_btf) programs"), we can show the cookie in bpf_link_info
like kprobe etc.

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20250603154309.3063644-1-chen.dylane@linux.dev
This commit is contained in:
Tao Chen
2025-06-03 23:43:07 +08:00
committed by Andrii Nakryiko
parent 7fdaba9129
commit 2fe1c59347
3 changed files with 5 additions and 0 deletions
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2
include/uapi/linux/bpf.h
View File

@@ -6651,6 +6651,8 @@ struct bpf_link_info {
struct {
__aligned_u64 tp_name; /* in/out: tp_name buffer ptr */
__u32 tp_name_len; /* in/out: tp_name buffer len */
__u32 :32;
__u64 cookie;
} raw_tracepoint;
struct {
__u32 attach_type;

1
kernel/bpf/syscall.c
View File

@@ -3688,6 +3688,7 @@ static int bpf_raw_tp_link_fill_link_info(const struct bpf_link *link,
return -EINVAL;
info->raw_tracepoint.tp_name_len = tp_len + 1;
info->raw_tracepoint.cookie = raw_tp_link->cookie;
if (!ubuf)
return 0;

2
tools/include/uapi/linux/bpf.h
View File

@@ -6651,6 +6651,8 @@ struct bpf_link_info {
struct {
__aligned_u64 tp_name; /* in/out: tp_name buffer ptr */
__u32 tp_name_len; /* in/out: tp_name buffer len */
__u32 :32;
__u64 cookie;
} raw_tracepoint;
struct {
__u32 attach_type;