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author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
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committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/ia64/include/asm/percpu.h | |
parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'arch/ia64/include/asm/percpu.h')
-rw-r--r-- | arch/ia64/include/asm/percpu.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/percpu.h b/arch/ia64/include/asm/percpu.h new file mode 100644 index 00000000..14aa1c58 --- /dev/null +++ b/arch/ia64/include/asm/percpu.h @@ -0,0 +1,54 @@ +#ifndef _ASM_IA64_PERCPU_H +#define _ASM_IA64_PERCPU_H + +/* + * Copyright (C) 2002-2003 Hewlett-Packard Co + * David Mosberger-Tang <davidm@hpl.hp.com> + */ + +#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE + +#ifdef __ASSEMBLY__ +# define THIS_CPU(var) (var) /* use this to mark accesses to per-CPU variables... */ +#else /* !__ASSEMBLY__ */ + + +#include <linux/threads.h> + +#ifdef CONFIG_SMP + +#ifdef HAVE_MODEL_SMALL_ATTRIBUTE +# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__))) +#endif + +#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset) + +extern void *per_cpu_init(void); + +#else /* ! SMP */ + +#define per_cpu_init() (__phys_per_cpu_start) + +#endif /* SMP */ + +#define PER_CPU_BASE_SECTION ".data..percpu" + +/* + * Be extremely careful when taking the address of this variable! Due to virtual + * remapping, it is different from the canonical address returned by __get_cpu_var(var)! + * On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly + * more efficient. + */ +#define __ia64_per_cpu_var(var) (*({ \ + __verify_pcpu_ptr(&(var)); \ + ((typeof(var) __kernel __force *)&(var)); \ +})) + +#include <asm-generic/percpu.h> + +/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */ +DECLARE_PER_CPU(unsigned long, local_per_cpu_offset); + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_IA64_PERCPU_H */ |