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authorZhaolei <zhaolei@cn.fujitsu.com>2009-04-09 14:08:18 +0800
committerIngo Molnar <mingo@elte.hu>2009-04-10 12:57:55 +0200
commit5cb3d1d9d34ac04bcaa2034139345b2a5fea54c1 (patch)
treeefbdf02871dff1fd12fdcd1594529ce30add3d57 /include/trace
parente71e99c294058a61b7a8b9bb6da2f745ac51aa4f (diff)
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@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>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/skb.h4
-rw-r--r--include/trace/skb_event_types.h38
-rw-r--r--include/trace/trace_event_types.h1
-rw-r--r--include/trace/trace_events.h1
4 files changed, 41 insertions, 3 deletions
diff --git a/include/trace/skb.h b/include/trace/skb.h
index b66206d9be72..d2de7174a6e8 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 000000000000..4a1c504c0e16
--- /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 df56f5694be6..33b6bfcba93b 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 fd13750ca4ba..0e2aa80076d9 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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