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