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tracing, net, skb tracepoint: make skb tracepoint use the TRACE_EVENT() macro

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TRACE_EVENT is a more generic way to define a tracepoint.
Doing so adds these new capabilities to this tracepoint:

  - zero-copy and per-cpu splice() tracing
  - binary tracing without printf overhead
  - structured logging records exposed under /debug/tracing/events
  - trace events embedded in function tracer output and other plugins
  - user-defined, per tracepoint filter expressions

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "Steven Rostedt ;" <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <49DD90D2.5020604@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Zhaolei 2009-04-09 14:08:18 +08:00 committed by Ingo Molnar
parent e71e99c294
commit 5cb3d1d9d3
4 changed files with 41 additions and 3 deletions
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4
include/trace/skb.h
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@ -4,8 +4,6 @@
#include <linux/skbuff.h>
#include <linux/tracepoint.h>
DECLARE_TRACE(kfree_skb,
TP_PROTO(struct sk_buff *skb, void *location),
TP_ARGS(skb, location));
#include <trace/skb_event_types.h>
#endif

38
include/trace/skb_event_types.h Normal file
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@ -0,0 +1,38 @@
/* use <trace/skb.h> instead */
#ifndef TRACE_EVENT
# error Do not include this file directly.
# error Unless you know what you are doing.
#endif
#undef TRACE_SYSTEM
#define TRACE_SYSTEM skb
/*
* Tracepoint for free an sk_buff:
*/
TRACE_EVENT(kfree_skb,
TP_PROTO(struct sk_buff *skb, void *location),
TP_ARGS(skb, location),
TP_STRUCT__entry(
__field( void *, skbaddr )
__field( unsigned short, protocol )
__field( void *, location )
),
TP_fast_assign(
__entry->skbaddr = skb;
if (skb) {
__entry->protocol = ntohs(skb->protocol);
}
__entry->location = location;
),
TP_printk("skbaddr=%p protocol=%u location=%p",
__entry->skbaddr, __entry->protocol, __entry->location)
);
#undef TRACE_SYSTEM

1
include/trace/trace_event_types.h
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@ -3,3 +3,4 @@
#include <trace/sched_event_types.h>
#include <trace/irq_event_types.h>
#include <trace/lockdep_event_types.h>
#include <trace/skb_event_types.h>

1
include/trace/trace_events.h
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@ -3,3 +3,4 @@
#include <trace/sched.h>
#include <trace/irq.h>
#include <trace/lockdep.h>
#include <trace/skb.h>