bpf: Add cookie in fdinfo for raw_tp

Add cookie in fdinfo for raw_tp, the info as follows:

link_type:	raw_tracepoint
link_id:	31
prog_tag:	9dfdf8ef453843bf
prog_id:	32
tp_name:	sys_enter
cookie:	23925373020405760

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250606165818.3394397-5-chen.dylane@linux.dev

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 185cf662451d7dad92d645c30121067f4c4bf8e4..56500381c28aa74a5c3e53ddca650c8d0ccd4b17 100644 (file)
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3654,8 +3654,10 @@ static void bpf_raw_tp_link_show_fdinfo(const struct bpf_link *link,
                container_of(link, struct bpf_raw_tp_link, link);
 
        seq_printf(seq,
-                  "tp_name:\t%s\n",
-                  raw_tp_link->btp->tp->name);
+                  "tp_name:\t%s\n"
+                  "cookie:\t%llu\n",
+                  raw_tp_link->btp->tp->name,
+                  raw_tp_link->cookie);
 }
 
 static int bpf_copy_to_user(char __user *ubuf, const char *buf, u32 ulen,