tcp: add tracepoint trace_tcp_destroy_sock

liu-song-6 · davem330 · commit e1a4aa50f473 · 2017-10-24T01:21:25.000+01:00
This patch adds trace event trace_tcp_destroy_sock.

Signed-off-by: Song Liu &lt;songliubraving@fb.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
@@ -154,6 +154,13 @@ DEFINE_EVENT(tcp_event_sk, tcp_receive_reset,
 	TP_ARGS(sk)
 );
 
+DEFINE_EVENT(tcp_event_sk, tcp_destroy_sock,
+
+	TP_PROTO(const struct sock *sk),
+
+	TP_ARGS(sk)
+);
+
 #endif /* _TRACE_TCP_H */
 
 /* This part must be outside protection */
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
@@ -1869,6 +1869,8 @@ void tcp_v4_destroy_sock(struct sock *sk)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 
+	trace_tcp_destroy_sock(sk);
+
 	tcp_clear_xmit_timers(sk);
 
 	tcp_cleanup_congestion_control(sk);

Original file line number	Diff line number	Diff line change
`@@ -1869,6 +1869,8 @@ void tcp_v4_destroy_sock(struct sock *sk)`
`1869`	`1869`	`{`
`1870`	`1870`	`struct tcp_sock *tp = tcp_sk(sk);`
`1871`	`1871`
	`1872`	`+ trace_tcp_destroy_sock(sk);`
	`1873`	`+`
`1872`	`1874`	`tcp_clear_xmit_timers(sk);`
`1873`	`1875`
`1874`	`1876`	`tcp_cleanup_congestion_control(sk);`