Commit-ID: 5cb3d1d9d34ac04bcaa2034139345b2a5fea54c1
Gitweb: http://git.kernel.org/tip/5cb3d1d9d34ac04bcaa2034139345b2a5fea54c1
Author: Zhaolei <zhaolei@xxxxxxxxxxxxxx>
AuthorDate: Thu, 9 Apr 2009 14:08:18 +0800
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Fri, 10 Apr 2009 12:57:55 +0200
tracing, net, skb tracepoint: make skb tracepoint use the TRACE_EVENT() macro
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@xxxxxxxxxxxxxx>
Acked-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: "Steven Rostedt ;" <rostedt@xxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
LKML-Reference: <49DD90D2.5020604@xxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
include/trace/skb.h | 4 +--
include/trace/skb_event_types.h | 38 +++++++++++++++++++++++++++++++++++++
include/trace/trace_event_types.h | 1 +
include/trace/trace_events.h | 1 +
4 files changed, 41 insertions(+), 3 deletions(-)
diff --git a/include/trace/skb.h b/include/trace/skb.h
index b66206d..d2de717 100644
--- a/include/trace/skb.h
+++ b/include/trace/skb.h
@@ -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
diff --git a/include/trace/skb_event_types.h b/include/trace/skb_event_types.h
new file mode 100644
index 0000000..4a1c504
--- /dev/null
+++ b/include/trace/skb_event_types.h
@@ -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
diff --git a/include/trace/trace_event_types.h b/include/trace/trace_event_types.h
index df56f56..33b6bfc 100644
--- a/include/trace/trace_event_types.h
+++ b/include/trace/trace_event_types.h
@@ -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>
diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h
index fd13750..0e2aa80 100644
--- a/include/trace/trace_events.h
+++ b/include/trace/trace_events.h
@@ -3,3 +3,4 @@
#include <trace/sched.h>
#include <trace/irq.h>
#include <trace/lockdep.h>
+#include <trace/skb.h>
--
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