2 * linux/include/asm-arm/smp.h
4 * Copyright (C) 2004-2005 ARM Ltd.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #ifndef __ASM_ARM_SMP_H
11 #define __ASM_ARM_SMP_H
13 #include <linux/config.h>
14 #include <linux/threads.h>
15 #include <linux/cpumask.h>
16 #include <linux/thread_info.h>
18 #include <asm/arch/smp.h>
21 # error "<asm-arm/smp.h> included in non-SMP build"
24 #define raw_smp_processor_id() (current_thread_info()->cpu)
27 * at the moment, there's not a big penalty for changing CPUs
28 * (the >big< penalty is running SMP in the first place)
30 #define PROC_CHANGE_PENALTY 15
35 * generate IPI list text
37 extern void show_ipi_list(struct seq_file *p);
40 * Move global data into per-processor storage.
42 extern void smp_store_cpu_info(unsigned int cpuid);
45 * Raise an IPI cross call on CPUs in callmap.
47 extern void smp_cross_call(cpumask_t callmap);
50 * Boot a secondary CPU, and assign it the specified idle task.
51 * This also gives us the initial stack to use for this CPU.
53 extern int boot_secondary(unsigned int cpu, struct task_struct *);
56 * Perform platform specific initialisation of the specified CPU.
58 extern void platform_secondary_init(unsigned int cpu);
61 * Initial data for bringing up a secondary CPU.
63 struct secondary_data {
67 extern struct secondary_data secondary_data;
69 #endif /* ifndef __ASM_ARM_SMP_H */