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LoongArch: ftrace: Fix build error if DYNAMIC_FTRACE_WITH_REGS is not set 

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

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() may be called in
ftrace_make_{call,nop}.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Youling Tang 2023-05-01 17:19:52 +08:00 committed by Huacai Chen
parent 6fbff14a63
commit 819cf65575
1 changed files with 1 additions and 3 deletions
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4
arch/loongarch/kernel/ftrace_dyn.c
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@ -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)