1 /* 2 * This file is subject to the terms and conditions of the GNU General 3 * Public License. See the file "COPYING" in the main directory of this 4 * archive for more details. 5 * 6 * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj (at) sgi.com) 7 * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc. 8 * Copyright (C) 2000, 2001, 2002 Ralf Baechle 9 * Copyright (C) 2000, 2001 Broadcom Corporation 10 */ 11 #ifndef __ASM_SMP_H 12 #define __ASM_SMP_H 13 14 #include <linux/bitops.h> 15 #include <linux/linkage.h> 16 #include <linux/threads.h> 17 #include <linux/cpumask.h> 18 19 #include <asm/atomic.h> 20 #include <asm/smp-ops.h> 21 22 extern int smp_num_siblings; 23 extern cpumask_t cpu_sibling_map[]; 24 25 #define raw_smp_processor_id() (current_thread_info()->cpu) 26 27 /* Map from cpu id to sequential logical cpu number. This will only 28 not be idempotent when cpus failed to come on-line. */ 29 extern int __cpu_number_map[NR_CPUS]; 30 #define cpu_number_map(cpu) __cpu_number_map[cpu] 31 32 /* The reverse map from sequential logical cpu number to cpu id. */ 33 extern int __cpu_logical_map[NR_CPUS]; 34 #define cpu_logical_map(cpu) __cpu_logical_map[cpu] 35 36 #define NO_PROC_ID (-1) 37 38 #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */ 39 #define SMP_CALL_FUNCTION 0x2 40 41 extern cpumask_t phys_cpu_present_map; 42 #define cpu_possible_map phys_cpu_present_map 43 44 extern void asmlinkage smp_bootstrap(void); 45 46 /* 47 * this function sends a 'reschedule' IPI to another CPU. 48 * it goes straight through and wastes no time serializing 49 * anything. Worst case is that we lose a reschedule ... 50 */ 51 static inline void smp_send_reschedule(int cpu) 52 { 53 extern struct plat_smp_ops *mp_ops; /* private */ 54 55 mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF); 56 } 57 58 extern asmlinkage void smp_call_function_interrupt(void); 59 60 extern void arch_send_call_function_single_ipi(int cpu); 61 extern void arch_send_call_function_ipi(cpumask_t mask); 62 63 #endif /* __ASM_SMP_H */ 64
