From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 15 Nov 2014 09:58:27 +0800 Subject: init android origin source code --- ANDROID_3.4.5/arch/ia64/include/asm/percpu.h | 54 ++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 ANDROID_3.4.5/arch/ia64/include/asm/percpu.h (limited to 'ANDROID_3.4.5/arch/ia64/include/asm/percpu.h') diff --git a/ANDROID_3.4.5/arch/ia64/include/asm/percpu.h b/ANDROID_3.4.5/arch/ia64/include/asm/percpu.h new file mode 100644 index 00000000..14aa1c58 --- /dev/null +++ b/ANDROID_3.4.5/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 + */ + +#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 + +#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 + +/* 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 */ -- cgit