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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
9a99417a JP |
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) \ | |
e390f9a9 | 15 | static void __used __section(.discard.func_stack_frame_non_standard) \ |
9a99417a JP |
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 */ |