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[net-next,2/6] tcp: mark trace event arguments sk and skb as const

Message ID 20171020212046.577888-3-songliubraving@fb.com
State Changes Requested, archived
Delegated to: David Miller
Headers show
Series add a set of tracepoints to tcp stack | expand

Commit Message

Song Liu Oct. 20, 2017, 9:20 p.m. UTC 
Some functions that we plan to add trace points require const sk
and/or skb. So we mark these fields as const in the tracepoint.

Signed-off-by: Song Liu <songliubraving@fb.com>
---
 include/trace/events/tcp.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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Patch

diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h
index 14b0a708..2b6fe72 100644
--- a/include/trace/events/tcp.h
+++ b/include/trace/events/tcp.h
@@ -17,13 +17,13 @@ 
  */
 DECLARE_EVENT_CLASS(tcp_event_sk_skb,
 
-	TP_PROTO(struct sock *sk, struct sk_buff *skb),
+	TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
 
 	TP_ARGS(sk, skb),
 
 	TP_STRUCT__entry(
-		__field(void *, skbaddr)
-		__field(void *, skaddr)
+		__field(const void *, skbaddr)
+		__field(const void *, skaddr)
 		__field(__u16, sport)
 		__field(__u16, dport)
 		__array(__u8, saddr, 4)
@@ -72,7 +72,7 @@  DECLARE_EVENT_CLASS(tcp_event_sk_skb,
 
 DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb,
 
-	TP_PROTO(struct sock *sk, struct sk_buff *skb),
+	TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
 
 	TP_ARGS(sk, skb)
 );