1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IA64_PERCPU_H 3 #define _ASM_IA64_PERCPU_H 4 5 /* 6 * Copyright (C) 2002-2003 Hewlett-Packard Co 7 * David Mosberger-Tang <davidm@hpl.hp.com> 8 */ 9 10 #ifdef __ASSEMBLY__ 11 # define THIS_CPU(var) (var) /* use this to mark accesses to per-CPU variables... */ 12 #else /* !__ASSEMBLY__ */ 13 14 15 #include <linux/threads.h> 16 17 #ifdef CONFIG_SMP 18 19 #ifdef HAVE_MODEL_SMALL_ATTRIBUTE 20 # define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__))) 21 #endif 22 23 #define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset) 24 25 extern void *per_cpu_init(void); 26 27 #else /* ! SMP */ 28 29 #define per_cpu_init() (__phys_per_cpu_start) 30 31 #endif /* SMP */ 32 33 #define PER_CPU_BASE_SECTION ".data..percpu" 34 35 /* 36 * Be extremely careful when taking the address of this variable! Due to virtual 37 * remapping, it is different from the canonical address returned by this_cpu_ptr(&var)! 38 * On the positive side, using __ia64_per_cpu_var() instead of this_cpu_ptr() is slightly 39 * more efficient. 40 */ 41 #define __ia64_per_cpu_var(var) (*({ \ 42 __verify_pcpu_ptr(&(var)); \ 43 ((typeof(var) __kernel __force *)&(var)); \ 44 })) 45 46 #include <asm-generic/percpu.h> 47 48 /* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */ 49 DECLARE_PER_CPU(unsigned long, local_per_cpu_offset); 50 51 #endif /* !__ASSEMBLY__ */ 52 53 #endif /* _ASM_IA64_PERCPU_H */ 54