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