linux-kernel - [PATCH AUTOSEL 5.4 4/6] parisc/ftrace: add missing CONFIG_DYNAMIC

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Message-ID: <20240229204150.2862196-4-sashal@kernel.org>
Date: Thu, 29 Feb 2024 15:41:44 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Max Kellermann <max.kellermann@...os.com>,
	Helge Deller <deller@....de>,
	Sasha Levin <sashal@...nel.org>,
	rostedt@...dmis.org,
	mhiramat@...nel.org,
	James.Bottomley@...senPartnership.com,
	linux-trace-kernel@...r.kernel.org,
	linux-parisc@...r.kernel.org
Subject: [PATCH AUTOSEL 5.4 4/6] parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check

From: Max Kellermann <max.kellermann@...os.com>

[ Upstream commit 250f5402e636a5cec9e0e95df252c3d54307210f ]

Fixes a bug revealed by -Wmissing-prototypes when
CONFIG_FUNCTION_GRAPH_TRACER is enabled but not CONFIG_DYNAMIC_FTRACE:

 arch/parisc/kernel/ftrace.c:82:5: error: no previous prototype for 'ftrace_enable_ftrace_graph_caller' [-Werror=missing-prototypes]
    82 | int ftrace_enable_ftrace_graph_caller(void)
       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 arch/parisc/kernel/ftrace.c:88:5: error: no previous prototype for 'ftrace_disable_ftrace_graph_caller' [-Werror=missing-prototypes]
    88 | int ftrace_disable_ftrace_graph_caller(void)
       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Max Kellermann <max.kellermann@...os.com>
Signed-off-by: Helge Deller <deller@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/parisc/kernel/ftrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/parisc/kernel/ftrace.c b/arch/parisc/kernel/ftrace.c
index b836fc61a24f4..f3a5c5e480cf0 100644
--- a/arch/parisc/kernel/ftrace.c
+++ b/arch/parisc/kernel/ftrace.c
@@ -80,7 +80,7 @@ void notrace __hot ftrace_function_trampoline(unsigned long parent,
 #endif
 }
 
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+#if defined(CONFIG_DYNAMIC_FTRACE) && defined(CONFIG_FUNCTION_GRAPH_TRACER)
 int ftrace_enable_ftrace_graph_caller(void)
 {
 	return 0;
-- 
2.43.0