parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check

MaxKellermann · hdeller · commit 250f5402e636 · 2024-02-16T20:18:03.000+01:00
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 &lt;max.kellermann@ionos.com&gt;
Signed-off-by: Helge Deller &lt;deller@gmx.de&gt;
diff --git a/arch/parisc/kernel/ftrace.c b/arch/parisc/kernel/ftrace.c
@@ -78,7 +78,7 @@ asmlinkage 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)
 {
 	static_key_enable(&ftrace_graph_enable.key);

Original file line number	Diff line number	Diff line change
`@@ -78,7 +78,7 @@ asmlinkage void notrace __hot ftrace_function_trampoline(unsigned long parent,`
`78`	`78`	`#endif`
`79`	`79`	`}`
`80`	`80`
`81`		`-#ifdef CONFIG_FUNCTION_GRAPH_TRACER`
	`81`	`+#if defined(CONFIG_DYNAMIC_FTRACE) && defined(CONFIG_FUNCTION_GRAPH_TRACER)`
`82`	`82`	`int ftrace_enable_ftrace_graph_caller(void)`
`83`	`83`	`{`
`84`	`84`	`static_key_enable(&ftrace_graph_enable.key);`