linux-kernel - [PATCH 02/10] perf tools: Introduce trace_event__tp_format

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Message-Id: <1468148882-10362-3-git-send-email-jolsa@kernel.org>
Date:	Sun, 10 Jul 2016 13:07:54 +0200
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 02/10] perf tools: Introduce trace_event__tp_format_id function

To get struct event_format object from tracepoint ID.
It will be used in following patches.

Link: http://lkml.kernel.org/n/tip-0omstcxuxa8npi3otondl4m8@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/trace-event.c | 9 +++++++++
 tools/perf/util/trace-event.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/tools/perf/util/trace-event.c b/tools/perf/util/trace-event.c
index 8ae051e0ec79..883caa8941a9 100644
--- a/tools/perf/util/trace-event.c
+++ b/tools/perf/util/trace-event.c
@@ -105,3 +105,12 @@ trace_event__tp_format(const char *sys, const char *name)
 
 	return tp_format(sys, name);
 }
+
+struct event_format*
+trace_event__tp_format_id(int id)
+{
+	if (!tevent_initialized && trace_event__init2())
+		return ERR_PTR(-ENOMEM);
+
+	return pevent_find_event(tevent.pevent, id);
+}
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index bce5b1dac268..b0af9c81bb0d 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -23,6 +23,8 @@ int trace_event__register_resolver(struct machine *machine,
 struct event_format*
 trace_event__tp_format(const char *sys, const char *name);
 
+struct event_format *trace_event__tp_format_id(int id);
+
 int bigendian(void);
 
 void event_format__fprintf(struct event_format *event,
-- 
2.4.11