From: Koki Sanagi <sanagi.koki@jp•fujitsu.com>
To: netdev@vger•kernel.org
Cc: davem@davemloft•net, kaneshige.kenji@jp•fujitsu.com,
izumi.taku@jp•fujitsu.com
Subject: [RFC PATCH 4/5] skb: add tracepoints to freeing skb
Date: Tue, 08 Jun 2010 14:30:53 +0900 [thread overview]
Message-ID: <4C0DD58D.1010703@jp.fujitsu.com> (raw)
In-Reply-To: <4C0DD43F.9090902@jp.fujitsu.com>
This patch adds tracepoint to consume_skb and dev_kfree_skb_irq.
Signed-off-by: Koki Sanagi <sanagi.koki@jp•fujitsu.com>
---
include/trace/events/skb.h | 36 ++++++++++++++++++++++++++++++++++++
net/core/dev.c | 2 ++
net/core/skbuff.c | 1 +
3 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h
index 4b2be6d..6ab5b34 100644
--- a/include/trace/events/skb.h
+++ b/include/trace/events/skb.h
@@ -35,6 +35,42 @@ TRACE_EVENT(kfree_skb,
__entry->skbaddr, __entry->protocol, __entry->location)
);
+TRACE_EVENT(consume_skb,
+
+ TP_PROTO(struct sk_buff *skb),
+
+ TP_ARGS(skb),
+
+ TP_STRUCT__entry(
+ __field( void *, skbaddr )
+ ),
+
+ TP_fast_assign(
+ __entry->skbaddr = skb;
+ ),
+
+ TP_printk("skbaddr=%p",
+ __entry->skbaddr)
+);
+
+TRACE_EVENT(dev_kfree_skb_irq,
+
+ TP_PROTO(struct sk_buff *skb),
+
+ TP_ARGS(skb),
+
+ TP_STRUCT__entry(
+ __field( void *, skbaddr )
+ ),
+
+ TP_fast_assign(
+ __entry->skbaddr = skb;
+ ),
+
+ TP_printk("skbaddr=%p",
+ __entry->skbaddr)
+);
+
TRACE_EVENT(skb_copy_datagram_iovec,
TP_PROTO(const struct sk_buff *skb, int len),
diff --git a/net/core/dev.c b/net/core/dev.c
index f7c731b..e0093c4 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -131,6 +131,7 @@
#include <linux/random.h>
#include <trace/events/napi.h>
#include <trace/events/net.h>
+#include <trace/events/skb.h>
#include <linux/pci.h>
#include "net-sysfs.h"
@@ -1584,6 +1585,7 @@ void dev_kfree_skb_irq(struct sk_buff *skb)
struct softnet_data *sd;
unsigned long flags;
+ trace_dev_kfree_skb_irq(skb);
local_irq_save(flags);
sd = &__get_cpu_var(softnet_data);
skb->next = sd->completion_queue;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 4e7ac09..008c019 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -466,6 +466,7 @@ void consume_skb(struct sk_buff *skb)
smp_rmb();
else if (likely(!atomic_dec_and_test(&skb->users)))
return;
+ trace_consume_skb(skb);
__kfree_skb(skb);
}
EXPORT_SYMBOL(consume_skb);
next prev parent reply other threads:[~2010-06-08 5:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-08 5:25 [RFC PATCH 0/5] netdev: show a process of packets Koki Sanagi
2010-06-08 5:27 ` [RFC PATCH 1/5] irq: add tracepoint to softirq_raise Koki Sanagi
2010-06-08 5:28 ` [RFC PATCH 2/5] napi: convert trace_napi_poll to TRACE_EVENT Koki Sanagi
2010-06-08 5:30 ` [RFC PATCH 3/5] netdev: add tracepoints to netdev layer Koki Sanagi
2010-06-08 5:30 ` Koki Sanagi [this message]
2010-06-08 5:31 ` [RFC PATCH 5/5] perf:add a script shows a process of packet Koki Sanagi
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