From 40e0b09081420853542571c38875b48b60404ebb Mon Sep 17 00:00:00 2001
From: Peilin Ye <peilin.ye@bytedance.com>
Date: Thu, 19 Jan 2023 16:45:16 -0800
Subject: net/sock: Introduce trace_sk_data_ready()

As suggested by Cong, introduce a tracepoint for all ->sk_data_ready()
callback implementations.  For example:

<...>
  iperf-609  [002] .....  70.660425: sk_data_ready: family=2 protocol=6 func=sock_def_readable
  iperf-609  [002] .....  70.660436: sk_data_ready: family=2 protocol=6 func=sock_def_readable
<...>

Suggested-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/tipc/socket.c | 3 +++
 net/tipc/topsrv.c | 5 +++++
 2 files changed, 8 insertions(+)

(limited to 'net/tipc')

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b35c8701876a..07c9bf5f7f5c 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -37,6 +37,7 @@
 
 #include <linux/rhashtable.h>
 #include <linux/sched/signal.h>
+#include <trace/events/sock.h>
 
 #include "core.h"
 #include "name_table.h"
@@ -2130,6 +2131,8 @@ static void tipc_data_ready(struct sock *sk)
 {
 	struct socket_wq *wq;
 
+	trace_sk_data_ready(sk);
+
 	rcu_read_lock();
 	wq = rcu_dereference(sk->sk_wq);
 	if (skwq_has_sleeper(wq))
diff --git a/net/tipc/topsrv.c b/net/tipc/topsrv.c
index 69c88cc03887..8ee0c07d00e9 100644
--- a/net/tipc/topsrv.c
+++ b/net/tipc/topsrv.c
@@ -43,6 +43,7 @@
 #include "bearer.h"
 #include <net/sock.h>
 #include <linux/module.h>
+#include <trace/events/sock.h>
 
 /* Number of messages to send before rescheduling */
 #define MAX_SEND_MSG_COUNT	25
@@ -439,6 +440,8 @@ static void tipc_conn_data_ready(struct sock *sk)
 {
 	struct tipc_conn *con;
 
+	trace_sk_data_ready(sk);
+
 	read_lock_bh(&sk->sk_callback_lock);
 	con = sk->sk_user_data;
 	if (connected(con)) {
@@ -496,6 +499,8 @@ static void tipc_topsrv_listener_data_ready(struct sock *sk)
 {
 	struct tipc_topsrv *srv;
 
+	trace_sk_data_ready(sk);
+
 	read_lock_bh(&sk->sk_callback_lock);
 	srv = sk->sk_user_data;
 	if (srv)
-- 
cgit