cf66ba58b5
This patch adds tracepoint to dev_queue_xmit, dev_hard_start_xmit,
netif_rx and netif_receive_skb. These tracepoints help you to monitor
network driver's input/output.
<idle>-0 [001] 112447.902030: netif_rx: dev=eth1 skbaddr=f3ef0900 len=84
<idle>-0 [001] 112447.902039: netif_receive_skb: dev=eth1 skbaddr=f3ef0900 len=84
sshd-6828 [000] 112447.903257: net_dev_queue: dev=eth4 skbaddr=f3fca538 len=226
sshd-6828 [000] 112447.903260: net_dev_xmit: dev=eth4 skbaddr=f3fca538 len=226 rc=0
Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Kaneshige Kenji <kaneshige.kenji@jp.fujitsu.com>
Cc: Izumo Taku <izumi.taku@jp.fujitsu.com>
Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Scott Mcmillan <scott.a.mcmillan@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
LKML-Reference: <4C72431E.3000901@jp.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
82 lines
1.5 KiB
C
82 lines
1.5 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM net
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#if !defined(_TRACE_NET_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NET_H
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/ip.h>
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#include <linux/tracepoint.h>
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TRACE_EVENT(net_dev_xmit,
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TP_PROTO(struct sk_buff *skb,
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int rc),
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TP_ARGS(skb, rc),
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TP_STRUCT__entry(
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__field( void *, skbaddr )
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__field( unsigned int, len )
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__field( int, rc )
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__string( name, skb->dev->name )
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),
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TP_fast_assign(
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__entry->skbaddr = skb;
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__entry->len = skb->len;
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__entry->rc = rc;
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__assign_str(name, skb->dev->name);
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),
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TP_printk("dev=%s skbaddr=%p len=%u rc=%d",
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__get_str(name), __entry->skbaddr, __entry->len, __entry->rc)
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);
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DECLARE_EVENT_CLASS(net_dev_template,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb),
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TP_STRUCT__entry(
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__field( void *, skbaddr )
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__field( unsigned int, len )
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__string( name, skb->dev->name )
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),
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TP_fast_assign(
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__entry->skbaddr = skb;
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__entry->len = skb->len;
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__assign_str(name, skb->dev->name);
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),
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TP_printk("dev=%s skbaddr=%p len=%u",
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__get_str(name), __entry->skbaddr, __entry->len)
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)
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DEFINE_EVENT(net_dev_template, net_dev_queue,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb)
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);
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DEFINE_EVENT(net_dev_template, netif_receive_skb,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb)
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);
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DEFINE_EVENT(net_dev_template, netif_rx,
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TP_PROTO(struct sk_buff *skb),
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TP_ARGS(skb)
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);
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#endif /* _TRACE_NET_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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