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.
6 * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@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
14 #include <linux/bitops.h>
15 #include <linux/linkage.h>
16 #include <linux/threads.h>
17 #include <linux/cpumask.h>
19 #include <asm/atomic.h>
20 #include <asm/smp-ops.h>
22 extern int smp_num_siblings;
23 extern cpumask_t cpu_sibling_map[];
25 #define raw_smp_processor_id() (current_thread_info()->cpu)
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]
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]
36 #define NO_PROC_ID (-1)
38 struct call_data_struct {
46 extern struct call_data_struct *call_data;
48 #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
49 #define SMP_CALL_FUNCTION 0x2
51 extern cpumask_t phys_cpu_present_map;
52 #define cpu_possible_map phys_cpu_present_map
54 extern void asmlinkage smp_bootstrap(void);
57 * this function sends a 'reschedule' IPI to another CPU.
58 * it goes straight through and wastes no time serializing
59 * anything. Worst case is that we lose a reschedule ...
61 static inline void smp_send_reschedule(int cpu)
63 extern struct plat_smp_ops *mp_ops; /* private */
65 mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
68 extern asmlinkage void smp_call_function_interrupt(void);
70 #endif /* __ASM_SMP_H */