linux-kernel - [PATCH v2 6/6] ftrace: Fix compilation warning about control_ops

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Date:	Mon, 24 Feb 2014 20:00:01 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	rostedt@...dmis.org
Cc:	jirislaby@...il.com, linux-kernel@...r.kernel.org,
	Jiri Slaby <jslaby@...e.cz>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>
Subject: [PATCH v2 6/6] ftrace: Fix compilation warning about control_ops_free

With CONFIG_DYNAMIC_FTRACE=n, I see a warning:
kernel/trace/ftrace.c:240:13: warning: 'control_ops_free' defined but not used
 static void control_ops_free(struct ftrace_ops *ops)
             ^
Add an ifdef block with CONFIG_DYNAMIC_FTRACE around that function as
it is used solely from the dynamic function tracing functions.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
---
 kernel/trace/ftrace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5bd70e8b09b0..34b1de9390af 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -237,10 +237,12 @@ static int control_ops_alloc(struct ftrace_ops *ops)
 	return 0;
 }
 
+#ifdef CONFIG_DYNAMIC_FTRACE
 static void control_ops_free(struct ftrace_ops *ops)
 {
 	free_percpu(ops->disabled);
 }
+#endif
 
 static void update_global_ops(void)
 {
-- 
1.8.5.2

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