migrate_timers: add comment, use spinlock_irq()
[linux-2.6/mini2440.git] / include / asm-mips / smp.h
blob0ff5b523ea77d8f6a5b7b2337969e414ce5ddaa8
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.
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
11 #ifndef __ASM_SMP_H
12 #define __ASM_SMP_H
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 #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
39 #define SMP_CALL_FUNCTION 0x2
41 extern cpumask_t phys_cpu_present_map;
42 #define cpu_possible_map phys_cpu_present_map
44 extern void asmlinkage smp_bootstrap(void);
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 ...
51 static inline void smp_send_reschedule(int cpu)
53 extern struct plat_smp_ops *mp_ops; /* private */
55 mp_ops->send_ipi_single(cpu, SMP_RESCHEDULE_YOURSELF);
58 extern asmlinkage void smp_call_function_interrupt(void);
60 extern void arch_send_call_function_single_ipi(int cpu);
61 extern void arch_send_call_function_ipi(cpumask_t mask);
63 #endif /* __ASM_SMP_H */