include/linux/frame.h

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