smp.h 1.9 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
/*
 *  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

I
Ingo Molnar 已提交
24
#define raw_smp_processor_id() (current_thread_info()->cpu)
L
Linus Torvalds 已提交
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

/*
 * 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);

49 50 51 52 53
/*
 * Broadcast a timer interrupt to the other CPUs.
 */
extern void smp_send_timer(void);

L
Linus Torvalds 已提交
54 55 56 57 58 59
/*
 * 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 *);

60 61 62 63 64 65 66 67 68 69 70 71 72 73
/*
 * 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;

74 75 76 77 78 79 80 81 82 83
extern int __cpu_disable(void);
extern int mach_cpu_disable(unsigned int cpu);

extern void __cpu_die(unsigned int cpu);
extern void cpu_die(void);

extern void platform_cpu_die(unsigned int cpu);
extern int platform_cpu_kill(unsigned int cpu);
extern void platform_cpu_enable(unsigned int cpu);

L
Linus Torvalds 已提交
84
#endif /* ifndef __ASM_ARM_SMP_H */