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