netdev - [PATCH v2 net-next 5/6] tcp: add tracepoint trace_tcp_destroy

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Date:   Mon, 23 Oct 2017 09:20:26 -0700
From:   Song Liu <songliubraving@...com>
To:     <netdev@...r.kernel.org>, <davem@...emloft.net>
CC:     <alexei.starovoitov@...il.com>, <liu.song.a23@...il.com>,
        Song Liu <songliubraving@...com>
Subject: [PATCH v2 net-next 5/6] tcp: add tracepoint trace_tcp_destroy_sock

This patch adds trace event trace_tcp_destroy_sock.

Signed-off-by: Song Liu <songliubraving@...com>
---
 include/trace/events/tcp.h | 7 +++++++
 net/ipv4/tcp_ipv4.c        | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index c83c711..1724c12 100644
--- 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
index eb3f3b8..23a8100 100644
--- 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);
-- 
2.9.5