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/*
* linux/include/asm-arm/smp.h
*
* Copyright (C) 2004-2005 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARM_SMP_H
#define __ASM_ARM_SMP_H
#include <linux/config.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/thread_info.h>
#include <asm/arch/smp.h>
#ifndef CONFIG_SMP
# error "<asm-arm/smp.h> included in non-SMP build"
#endif
#define smp_processor_id() (current_thread_info()->cpu)
extern cpumask_t cpu_present_mask;
#define cpu_possible_map cpu_present_mask
/*
* at the moment, there's not a big penalty for changing CPUs
* (the >big< penalty is running SMP in the first place)
*/
#define PROC_CHANGE_PENALTY 15
struct seq_file;
/*
* generate IPI list text
*/
extern void show_ipi_list(struct seq_file *p);
/*
* Move global data into per-processor storage.
*/
extern void smp_store_cpu_info(unsigned int cpuid);
/*
* Raise an IPI cross call on CPUs in callmap.
*/
extern void smp_cross_call(cpumask_t callmap);
/*
* Boot a secondary CPU, and assign it the specified idle task.
* This also gives us the initial stack to use for this CPU.
*/
extern int boot_secondary(unsigned int cpu, struct task_struct *);
/*
* Perform platform specific initialisation of the specified CPU.
*/
extern void platform_secondary_init(unsigned int cpu);
/*
* Initial data for bringing up a secondary CPU.
*/
struct secondary_data {
unsigned long pgdir;
void *stack;
};
extern struct secondary_data secondary_data;
#endif /* ifndef __ASM_ARM_SMP_H */
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