tracing: Pull up calls to trace_define_common_fields()

Call trace_define_common_fields() in event_create_dir() only.
This avoids trace events to handle it from their define_fields
callbacks and shrinks the kernel code size:

   text    data     bss     dec     hex filename
5346802 1961864 7103260 14411926         dbe896 vmlinux.o.old
5345151 1961864 7103260 14410275         dbe223 vmlinux.o

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
LKML-Reference: <4B1DC49C.8000107@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index dff8c84ddf17..458e5bfe26d0 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -184,10 +184,6 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call)	\
         struct struct_name field;                                       \
         int ret;                                                        \
                                                                         \
-        ret = trace_define_common_fields(event_call);                   \
-        if (ret)                                                        \
-                return ret;                                             \
-                                                                        \
         tstruct;                                                        \
                                                                         \
         return ret;                                                     \