tracing: Add print_fmt field

This is part of a patch set that removes the show_format method
in the ftrace event macros.

The print_fmt field is added to hold the string that shows
the print_fmt in the event format files. This patch only adds
the field but it is currently not used. Later patches will use
this field to enable us to remove the show_format field
and function.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <4B273D3E.2000704@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 2233c98d80df..bd23d8e52f02 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -121,6 +121,7 @@ struct ftrace_event_call {
         int                     (*regfunc)(struct ftrace_event_call *);
         void                    (*unregfunc)(struct ftrace_event_call *);
         int                     id;
+        const char              *print_fmt;
         int                     (*raw_init)(struct ftrace_event_call *);
         int                     (*show_format)(struct ftrace_event_call *,
                                                struct trace_seq *);