1 #ifndef _ASM_IA64_PERCPU_H 2 #define _ASM_IA64_PERCPU_H 3 4 /* 5 * Copyright (C) 2002-2003 Hewlett-Packard Co 6 * David Mosberger-Tang <davidm@hpl.hp.com> 7 */ 8 9 #define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE 10 11 #ifdef __ASSEMBLY__ 12 # define THIS_CPU(var) (var) /* use this to mark accesses to per-CPU variables... */ 13 #else /* !__ASSEMBLY__ */ 14 15 16 #include <linux/threads.h> 17 18 #ifdef CONFIG_SMP 19 20 #ifdef HAVE_MODEL_SMALL_ATTRIBUTE 21 # define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__))) 22 #endif 23 24 #define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset) 25 26 extern void *per_cpu_init(void); 27 28 #else /* ! SMP */ 29 30 #define per_cpu_init() (__phys_per_cpu_start) 31 32 #endif /* SMP */ 33 34 #define PER_CPU_BASE_SECTION ".data..percpu" 35 36 /* 37 * Be extremely careful when taking the address of this variable! Due to virtual 38 * remapping, it is different from the canonical address returned by this_cpu_ptr(&var)! 39 * On the positive side, using __ia64_per_cpu_var() instead of this_cpu_ptr() is slightly 40 * more efficient. 41 */ 42 #define __ia64_per_cpu_var(var) (*({ \ 43 __verify_pcpu_ptr(&(var)); \ 44 ((typeof(var) __kernel __force *)&(var)); \ 45 })) 46 47 #include <asm-generic/percpu.h> 48 49 /* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */ 50 DECLARE_PER_CPU(unsigned long, local_per_cpu_offset); 51 52 #endif /* !__ASSEMBLY__ */ 53 54 #endif /* _ASM_IA64_PERCPU_H */ 55