diff --git a/arch/alpha/include/asm/ftrace.h b/arch/alpha/include/asm/ftrace.h index 40a8c178f10d..7ec44134c804 100644 --- a/arch/alpha/include/asm/ftrace.h +++ b/arch/alpha/include/asm/ftrace.h @@ -1 +1,29 @@ -/* empty */ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ALPHA_FTRACE_H +#define _ASM_ALPHA_FTRACE_H + +#ifdef CONFIG_FRAME_POINTER + +static void *alpha_ftrace_return_address0(void) + noinline notrace; +static void *alpha_ftrace_return_address0(void) +{ + return __builtin_return_address(0); +} + +#define ftrace_return_address0 alpha_ftrace_return_address0() + +/* + * __builtin_return_address() requires a constant integer argument. + * Keep this as a macro so the value is seen at the callsite. + */ +#define ftrace_return_address(n) __builtin_return_address(n) + +#else /* !CONFIG_FRAME_POINTER */ + +#define ftrace_return_address0 0UL +#define ftrace_return_address(n) ((void)(n), 0UL) + +#endif /* CONFIG_FRAME_POINTER */ + +#endif /* _ASM_ALPHA_FTRACE_H */