Commit bdb5ac80 authored by Andrey Ryabinin's avatar Andrey Ryabinin Committed by Linus Torvalds
Browse files

compiler.h, kasan: Avoid duplicating __read_once_size_nocheck() 



Instead of having two identical __read_once_size_nocheck() functions
with different attributes, consolidate all the difference in new macro
__no_kasan_or_inline and use it. No functional changes.

Signed-off-by: default avatarAndrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d8a5b805

include/linux/compiler.h

+6 −8
Original line number Diff line number Diff line
@@ -185,23 +185,21 @@ void __read_once_size(const volatile void *p, void *res, int size) 


#ifdef CONFIG_KASAN

/*

 * This function is not 'inline' because __no_sanitize_address confilcts

 * We can't declare function 'inline' because __no_sanitize_address confilcts

 * with inlining. Attempt to inline it may cause a build failure.

 * 	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368

 * '__maybe_unused' allows us to avoid defined-but-not-used warnings.

 */

static __no_sanitize_address __maybe_unused

void __read_once_size_nocheck(const volatile void *p, void *res, int size)

{

	__READ_ONCE_SIZE;

}

# define __no_kasan_or_inline __no_sanitize_address __maybe_unused

#else

static __always_inline

# define __no_kasan_or_inline __always_inline

#endif



static __no_kasan_or_inline

void __read_once_size_nocheck(const volatile void *p, void *res, int size)

{

	__READ_ONCE_SIZE;

}

#endif



static __always_inline void __write_once_size(volatile void *p, void *res, int size)

{