kernel-hacking-2024-linux-s.../include/asm-x86/alternative-asm.h

#ifdef __ASSEMBLY__

#ifdef CONFIG_X86_32
# define X86_ALIGN .long
#else
# define X86_ALIGN .quad
#endif

#ifdef CONFIG_SMP
	.macro LOCK_PREFIX
1:	lock
	.section .smp_locks,"a"
	.align 4
	X86_ALIGN 1b
	.previous
	.endm
#else
	.macro LOCK_PREFIX
	.endm
#endif

#endif  /*  __ASSEMBLY__  */
x86: rename .i assembler includes to .h .i is an ending used for preprocessed stuff. This patch therefore renames assembler include files to .h and guards the contents with an #ifdef __ASSEMBLY__. [ tglx: arch/x86 adaptation ] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2007-10-17 16:04:38 +00:00			`#ifdef __ASSEMBLY__`

			`#ifdef CONFIG_X86_32`
			`# define X86_ALIGN .long`
			`#else`
			`# define X86_ALIGN .quad`
			`#endif`

			`#ifdef CONFIG_SMP`
			`.macro LOCK_PREFIX`
			`1: lock`
			`.section .smp_locks,"a"`
			`.align 4`
			`X86_ALIGN 1b`
			`.previous`
			`.endm`
			`#else`
			`.macro LOCK_PREFIX`
			`.endm`
			`#endif`

			`#endif /* __ASSEMBLY__ */`