mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 23:40:54 +07:00
9a99417acb
Add a new macro, STACK_FRAME_NON_STANDARD(), which is used to denote a function which does something unusual related to its stack frame. Use of the macro prevents objtool from emitting a false positive warning. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at> Cc: Borislav Petkov <bp@alien8.de> Cc: Chris J Arges <chris.j.arges@canonical.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Pedro Alves <palves@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/34487a17b23dba43c50941599d47054a9584b219.1456719558.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
24 lines
767 B
C
24 lines
767 B
C
#ifndef _LINUX_FRAME_H
|
|
#define _LINUX_FRAME_H
|
|
|
|
#ifdef CONFIG_STACK_VALIDATION
|
|
/*
|
|
* This macro marks the given function's stack frame as "non-standard", which
|
|
* tells objtool to ignore the function when doing stack metadata validation.
|
|
* It should only be used in special cases where you're 100% sure it won't
|
|
* affect the reliability of frame pointers and kernel stack traces.
|
|
*
|
|
* For more information, see tools/objtool/Documentation/stack-validation.txt.
|
|
*/
|
|
#define STACK_FRAME_NON_STANDARD(func) \
|
|
static void __used __section(__func_stack_frame_non_standard) \
|
|
*__func_stack_frame_non_standard_##func = func
|
|
|
|
#else /* !CONFIG_STACK_VALIDATION */
|
|
|
|
#define STACK_FRAME_NON_STANDARD(func)
|
|
|
|
#endif /* CONFIG_STACK_VALIDATION */
|
|
|
|
#endif /* _LINUX_FRAME_H */
|