From e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Tue, 11 Aug 2009 17:42:52 +0200
Subject: tracing: Add ftrace event call parameter to its field descriptor
 handler

Add the struct ftrace_event_call as a parameter of its show_format()
callback. This way we can use it from the syscall trace events to
retrieve the syscall name from the ftrace event call parameter and
describe its fields using the syscalls metadata.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jiaying Zhang <jiayingz@google.com>
Cc: Martin Bligh <mbligh@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
---
 include/linux/ftrace_event.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'include/linux/ftrace_event.h')

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 8544f12..189806b 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -116,7 +116,8 @@ struct ftrace_event_call {
 	void			(*unregfunc)(void *);
 	int			id;
 	int			(*raw_init)(void);
-	int			(*show_format)(struct trace_seq *s);
+	int			(*show_format)(struct ftrace_event_call *call,
+					       struct trace_seq *s);
 	int			(*define_fields)(void);
 	struct list_head	fields;
 	int			filter_active;
-- 
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