netdev - [net-next] qdisc: add new field for qdisc

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Message-Id: <20210727131413.5085-1-xiangxia.m.yue@gmail.com>
Date:   Tue, 27 Jul 2021 21:14:13 +0800
From:   xiangxia.m.yue@...il.com
To:     xiyou.wangcong@...il.com, netdev@...r.kernel.org
Cc:     Tonghao Zhang <xiangxia.m.yue@...il.com>
Subject: [net-next] qdisc: add new field for qdisc_enqueue tracepoint

From: Tonghao Zhang <xiangxia.m.yue@...il.com>

qdisc_enqueue tracepoint can work with qdisc:qdisc_dequeue
to measure packets latency in qdisc queues.

Add a new field txq for it, then we can retrieve more info.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>
---
 include/trace/events/qdisc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/trace/events/qdisc.h b/include/trace/events/qdisc.h
index c3006c6b4a87..59c945b66f9c 100644
--- a/include/trace/events/qdisc.h
+++ b/include/trace/events/qdisc.h
@@ -54,6 +54,7 @@ TRACE_EVENT(qdisc_enqueue,
 
 	TP_STRUCT__entry(
 		__field(struct Qdisc *, qdisc)
+		__field(const struct netdev_queue *, txq)
 		__field(void *,	skbaddr)
 		__field(int, ifindex)
 		__field(u32, handle)
@@ -62,6 +63,7 @@ TRACE_EVENT(qdisc_enqueue,
 
 	TP_fast_assign(
 		__entry->qdisc = qdisc;
+		__entry->txq	 = txq;
 		__entry->skbaddr = skb;
 		__entry->ifindex = txq->dev ? txq->dev->ifindex : 0;
 		__entry->handle	 = qdisc->handle;
-- 
2.27.0