perf: Convert perf tracing data into a tracing_data event

Bypasses the tracing_data perf header code and replaces it with
a synthesized event and processing function that accomplishes
the same thing, used when reading/writing perf data to/from a
pipe.

The tracing data is pretty large, and this patch doesn't attempt
to break it down into component events.  The tracing_data event
itself doesn't actually contain the tracing data, rather it
arranges for the event processing code to skip over it after
it's read, using the skip return value added to the event
processing loop in a previous patch.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: k-keiichi@bx.jp.nec.com
Cc: acme@ghostprotocols.net
LKML-Reference: <1270184365-8281-8-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index c720fe06f8d7..b896a177ea41 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -86,6 +86,7 @@ struct build_id_event {
 enum perf_header_event_type { /* above any possible kernel type */
         PERF_RECORD_HEADER_ATTR                 = 64,
         PERF_RECORD_HEADER_EVENT_TYPE           = 65,
+        PERF_RECORD_HEADER_TRACING_DATA         = 66,
         PERF_RECORD_HEADER_MAX
 };
 
@@ -107,6 +108,11 @@ struct event_type_event {
         struct perf_trace_event_type event_type;
 };
 
+struct tracing_data_event {
+        struct perf_event_header header;
+        u32 size;
+};
+
 typedef union event_union {
         struct perf_event_header        header;
         struct ip_event                 ip;
@@ -118,6 +124,7 @@ typedef union event_union {
         struct sample_event             sample;
         struct attr_event               attr;
         struct event_type_event         event_type;
+        struct tracing_data_event       tracing_data;
 } event_t;
 
 struct events_stats {