[1/5] LoongArch: Fix build error if CONFIG_DYNAMIC_FTRACE_WITH_REGS is not set

Commit Message

Youling Tang April 26, 2023, 1:49 a.m. UTC

We can see the following build error on LoongArch if CONFIG_DYNAMIC_FTRACE_WITH_REGS
is not set:

arch/loongarch/kernel/ftrace_dyn.c: In function ‘ftrace_make_call’:
arch/loongarch/kernel/ftrace_dyn.c:167:23: error: implicit declaration of function ‘__get_mod’
  167 |                 ret = __get_mod(&mod, pc);
      |                       ^~~~~~~~~
arch/loongarch/kernel/ftrace_dyn.c:171:24: error: implicit declaration of function ‘get_plt_addr’
  171 |                 addr = get_plt_addr(mod, addr);
      |                        ^~~~~~~~~~~~

The reason is that the __get_mod and get_plt_addr functions will be called
in ftrace_make_{call,nop}.

Signed-off-by: Youling Tang <[e-mail]>
---
 arch/loongarch/kernel/ftrace_dyn.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Patch

diff --git a/arch/loongarch/kernel/ftrace_dyn.c b/arch/loongarch/kernel/ftrace_dyn.c
index 4a3ef8516ccc..c5f4b4681ddc 100644
--- a/arch/loongarch/kernel/ftrace_dyn.c
+++ b/arch/loongarch/kernel/ftrace_dyn.c
@@ -30,8 +30,6 @@  static int ftrace_modify_code(unsigned long pc, u32 old, u32 new, bool validate)
 	return 0;
 }
 
-#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
-
 #ifdef CONFIG_MODULES
 static inline int __get_mod(struct module **mod, unsigned long addr)
 {
@@ -72,6 +70,7 @@  static unsigned long get_plt_addr(struct module *mod, unsigned long addr)
 }
 #endif
 
+#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
 int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr, unsigned long addr)
 {
 	u32 old, new;
@@ -102,7 +101,6 @@  int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr, unsigned
 
 	return ftrace_modify_code(pc, old, new, true);
 }
-
 #endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
 
 int ftrace_update_ftrace_func(ftrace_func_t func)