diff options
author | Tejun Heo <tj@kernel.org> | 2009-09-15 04:57:19 +0400 |
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committer | Tejun Heo <tj@kernel.org> | 2009-09-15 04:57:19 +0400 |
commit | 5579fd7e6aed8860ea0c8e3f11897493153b10ad (patch) | |
tree | 8f797ccd0f1a2c88f1605ae9e90b3ac17485de27 /arch/s390/include/asm/percpu.h | |
parent | 04a13c7c632e1fe04a5f6e6c83565d2559e37598 (diff) | |
parent | c2a7e818019f20a5cf7fb26a6eb59e212e6c0cd8 (diff) | |
download | linux-5579fd7e6aed8860ea0c8e3f11897493153b10ad.tar.xz |
Merge branch 'for-next' into for-linus
* pcpu_chunk_page_occupied() doesn't exist in for-next.
* pcpu_chunk_addr_search() updated to use raw_smp_processor_id().
Conflicts:
mm/percpu.c
Diffstat (limited to 'arch/s390/include/asm/percpu.h')
-rw-r--r-- | arch/s390/include/asm/percpu.h | 32 |
1 files changed, 8 insertions, 24 deletions
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h index 408d60b4f75b..f7ad8719d02d 100644 --- a/arch/s390/include/asm/percpu.h +++ b/arch/s390/include/asm/percpu.h @@ -1,37 +1,21 @@ #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)); })) +#define __my_cpu_offset S390_lowcore.percpu_offset +/* + * For 64 bit module code, the module may be more than 4G above the + * per cpu area, use weak definitions to force the compiler to + * generate external references. + */ +#if defined(CONFIG_SMP) && defined(__s390x__) && defined(MODULE) +#define ARCH_NEEDS_WEAK_PER_CPU #endif -#define __my_cpu_offset S390_lowcore.percpu_offset - #include <asm-generic/percpu.h> #endif /* __ARCH_S390_PERCPU__ */ |