From 836d481ed7c91152c6144ea3a3363cad3940b3e0 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Wed, 31 Jul 2013 19:31:37 +0200
Subject: [PATCH] tracing: Kill the !CONFIG_MODULES code in trace_events.c
Move trace_module_nb under CONFIG_MODULES and kill the dummy
trace_module_notify(). Imho it doesn't make sense to define
"struct notifier_block" and its .notifier_call just to avoid
"ifdef" in event_trace_init(), and all other !CONFIG_MODULES
code has already gone away.
Link: http://lkml.kernel.org/r/20130731173137.GA31043@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/trace_events.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 4e706a01f1f9..368a4d50cc30 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1820,12 +1820,10 @@ static int trace_module_notify(struct notifier_block *self,
return 0;
}
-#else
-static inline int trace_module_notify(struct notifier_block *self,
- unsigned long val, void *data)
-{
- return 0;
-}
+static struct notifier_block trace_module_nb = {
+ .notifier_call = trace_module_notify,
+ .priority = 0,
+};
#endif /* CONFIG_MODULES */
/* Create a new event directory structure for a trace directory. */
@@ -2193,11 +2191,6 @@ static void __add_event_to_tracers(struct ftrace_event_call *call)
__trace_add_new_event(call, tr);
}
-static struct notifier_block trace_module_nb = {
- .notifier_call = trace_module_notify,
- .priority = 0,
-};
-
extern struct ftrace_event_call *__start_ftrace_events[];
extern struct ftrace_event_call *__stop_ftrace_events[];
@@ -2402,10 +2395,11 @@ static __init int event_trace_init(void)
if (ret)
return ret;
+#ifdef CONFIG_MODULES
ret = register_module_notifier(&trace_module_nb);
if (ret)
pr_warning("Failed to register trace events module notifier\n");
-
+#endif
return 0;
}
early_initcall(event_trace_memsetup);
--
2.20.1