linux-kernel - [PATCH 04/14] tracing: add private data field into struct ftrace_event

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Message-ID: <1364377737-10540-6-git-send-email-jovi.zhangwei@huawei.com>
Date:	Wed, 27 Mar 2013 17:48:46 +0800
From:	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>
To:	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
CC:	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>
Subject: [PATCH 04/14] tracing: add private data field into struct ftrace_event_file

From: "zhangwei(Jovi)" <jovi.zhangwei@...wei.com>

Since modules can register own event_trace_ops tracing callback
functions now, so it's reasonable to allow modules have own
private data in struct ftrace_event_file.

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@...wei.com>
---
 include/linux/ftrace_event.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 27d7a4f..38c272a 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -319,6 +319,8 @@ struct ftrace_event_file {
 	 * caching and such. Which is mostly OK ;-)
 	 */
 	unsigned long		flags;
+
+	void *data; /* private data */
 };
 
 #define __TRACE_EVENT_FLAGS(name, value)				\
-- 
1.7.9.7


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