1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_FRAME_H
3#define _LINUX_FRAME_H
4
5#ifdef CONFIG_STACK_VALIDATION
6/*
7 * This macro marks the given function's stack frame as "non-standard", which
8 * tells objtool to ignore the function when doing stack metadata validation.
9 * It should only be used in special cases where you're 100% sure it won't
10 * affect the reliability of frame pointers and kernel stack traces.
11 *
12 * For more information, see tools/objtool/Documentation/stack-validation.txt.
13 */
14#define STACK_FRAME_NON_STANDARD(func) \
15 static void __used __section(.discard.func_stack_frame_non_standard) \
16 *__func_stack_frame_non_standard_##func = func
17
18#else /* !CONFIG_STACK_VALIDATION */
19
20#define STACK_FRAME_NON_STANDARD(func)
21
22#endif /* CONFIG_STACK_VALIDATION */
23
24#endif /* _LINUX_FRAME_H */
25