linux-kernel - [PATCH net-next 03/26] rxrpc: Split call timer-expiration from call timer-set tracepoint

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Message-ID: <166794589129.2389296.4624747993035742861.stgit@warthog.procyon.org.uk>
Date:   Tue, 08 Nov 2022 22:18:11 +0000
From:   David Howells <dhowells@...hat.com>
To:     netdev@...r.kernel.org
Cc:     dhowells@...hat.com, linux-afs@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 03/26] rxrpc: Split call timer-expiration from call
 timer-set tracepoint

Split the tracepoint for call timer-set to separate out the call
timer-expiration event

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Marc Dionne <marc.dionne@...istor.com>
cc: linux-afs@...ts.infradead.org
---

 include/trace/events/rxrpc.h |   42 +++++++++++++++++++++++++++++++++++++++++-
 net/rxrpc/call_object.c      |    2 +-
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 4c501c660123..a72f04e3d264 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -133,7 +133,6 @@
 
 #define rxrpc_timer_traces \
 	EM(rxrpc_timer_begin,			"Begin ") \
-	EM(rxrpc_timer_expired,			"*EXPR*") \
 	EM(rxrpc_timer_exp_ack,			"ExpAck") \
 	EM(rxrpc_timer_exp_hard,		"ExpHrd") \
 	EM(rxrpc_timer_exp_idle,		"ExpIdl") \
@@ -1019,6 +1018,47 @@ TRACE_EVENT(rxrpc_timer,
 		      __entry->timer - __entry->now)
 	    );
 
+TRACE_EVENT(rxrpc_timer_expired,
+	    TP_PROTO(struct rxrpc_call *call, unsigned long now),
+
+	    TP_ARGS(call, now),
+
+	    TP_STRUCT__entry(
+		    __field(unsigned int,			call		)
+		    __field(long,				now		)
+		    __field(long,				ack_at		)
+		    __field(long,				ack_lost_at	)
+		    __field(long,				resend_at	)
+		    __field(long,				ping_at		)
+		    __field(long,				expect_rx_by	)
+		    __field(long,				expect_req_by	)
+		    __field(long,				expect_term_by	)
+		    __field(long,				timer		)
+			     ),
+
+	    TP_fast_assign(
+		    __entry->call		= call->debug_id;
+		    __entry->now		= now;
+		    __entry->ack_at		= call->ack_at;
+		    __entry->ack_lost_at	= call->ack_lost_at;
+		    __entry->resend_at		= call->resend_at;
+		    __entry->expect_rx_by	= call->expect_rx_by;
+		    __entry->expect_req_by	= call->expect_req_by;
+		    __entry->expect_term_by	= call->expect_term_by;
+		    __entry->timer		= call->timer.expires;
+			   ),
+
+	    TP_printk("c=%08x EXPIRED a=%ld la=%ld r=%ld xr=%ld xq=%ld xt=%ld t=%ld",
+		      __entry->call,
+		      __entry->ack_at - __entry->now,
+		      __entry->ack_lost_at - __entry->now,
+		      __entry->resend_at - __entry->now,
+		      __entry->expect_rx_by - __entry->now,
+		      __entry->expect_req_by - __entry->now,
+		      __entry->expect_term_by - __entry->now,
+		      __entry->timer - __entry->now)
+	    );
+
 TRACE_EVENT(rxrpc_rx_lose,
 	    TP_PROTO(struct rxrpc_skb_priv *sp),
 
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 6401cdf7a624..a75861a0c477 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -52,7 +52,7 @@ static void rxrpc_call_timer_expired(struct timer_list *t)
 	_enter("%d", call->debug_id);
 
 	if (call->state < RXRPC_CALL_COMPLETE) {
-		trace_rxrpc_timer(call, rxrpc_timer_expired, jiffies);
+		trace_rxrpc_timer_expired(call, jiffies);
 		__rxrpc_queue_call(call);
 	} else {
 		rxrpc_put_call(call, rxrpc_call_put);