#ifndef __ARCH_S390_PERCPU__ #define __ARCH_S390_PERCPU__ #include <linux/compiler.h> #include <asm/lowcore.h> /* * 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 SHIFT_PERCPU_PTR(ptr,offset) (({ \ extern int simple_identifier_##var(void); \ unsigned long *__ptr; \ asm ( "larl %0, %1@GOTENT" \ : "=a" (__ptr) : "X" (ptr) ); \ (typeof(ptr))((*__ptr) + (offset)); })) #else #define SHIFT_PERCPU_PTR(ptr, offset) (({ \ extern int simple_identifier_##var(void); \ unsigned long __ptr; \ asm ( "" : "=a" (__ptr) : "0" (ptr) ); \ (typeof(ptr)) (__ptr + (offset)); })) #endif #define __my_cpu_offset S390_lowcore.percpu_offset #include <asm-generic/percpu.h> #endif /* __ARCH_S390_PERCPU__ */