#ifndef __ARCH_S390_PERCPU__#define __ARCH_S390_PERCPU__ #include <linux/compiler.h>#include <asm/lowcore.h> #define __GENERIC_PER_CPU /* * s390 uses its own implementation for per cpu data, the offset of * the cpu local data area is cached in the cpu's lowcore memory. * For 64 bit module code s390 forces the use of a GOT slot for the * address of the per cpu variable. This is needed because the module * may be more than 4G above the per cpu area. */#if defined(__s390x__) && defined(MODULE) #define __reloc_hide(var,offset) \  (*({ unsigned long *__ptr; \       asm ( "larl %0,per_cpu__"#var"@GOTENT" \             : "=a" (__ptr) : "X" (per_cpu__##var) ); \       (typeof(&per_cpu__##var))((*__ptr) + (offset)); })) #else #define __reloc_hide(var, offset) \  (*({ unsigned long __ptr; \       asm ( "" : "=a" (__ptr) : "0" (&per_cpu__##var) ); \       (typeof(&per_cpu__##var)) (__ptr + (offset)); })) #endif #ifdef CONFIG_SMP extern unsigned long __per_cpu_offset[NR_CPUS]; /* Separate out the type, so (int[3], foo) works. */#define DEFINE_PER_CPU(type, name) \    __attribute__((__section__(".data.percpu"))) \    __typeof__(type) per_cpu__##name #define __get_cpu_var(var) __reloc_hide(var,S390_lowcore.percpu_offset)#define per_cpu(var,cpu) __reloc_hide(var,__per_cpu_offset[cpu]) /* A macro to avoid #include hell... */#define percpu_modcopy(pcpudst, src, size)			\do {								\	unsigned int __i;					\	for_each_possible_cpu(__i)				\		memcpy((pcpudst)+__per_cpu_offset[__i],		\		       (src), (size));				\} while (0) #else /* ! SMP */ #define DEFINE_PER_CPU(type, name) \    __typeof__(type) per_cpu__##name #define __get_cpu_var(var) __reloc_hide(var,0)#define per_cpu(var,cpu) __reloc_hide(var,0) #endif /* SMP */ #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) #endif /* __ARCH_S390_PERCPU__ */