2005-04-16 22:20:36 +00:00
|
|
|
/*
|
2008-08-02 09:55:55 +00:00
|
|
|
* arch/arm/include/asm/smp.h
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
* 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/threads.h>
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
#include <linux/thread_info.h>
|
|
|
|
|
|
|
|
#ifndef CONFIG_SMP
|
2008-08-02 09:55:55 +00:00
|
|
|
# error "<asm/smp.h> included in non-SMP build"
|
2005-04-16 22:20:36 +00:00
|
|
|
#endif
|
|
|
|
|
2005-06-22 00:14:34 +00:00
|
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
struct seq_file;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* generate IPI list text
|
|
|
|
*/
|
2010-11-15 14:33:51 +00:00
|
|
|
extern void show_ipi_list(struct seq_file *, int);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-11-08 15:35:23 +00:00
|
|
|
/*
|
|
|
|
* Called from assembly code, this handles an IPI.
|
|
|
|
*/
|
2010-11-15 09:42:08 +00:00
|
|
|
asmlinkage void do_IPI(int ipinr, struct pt_regs *regs);
|
2005-11-08 15:35:23 +00:00
|
|
|
|
2011-10-06 14:18:14 +00:00
|
|
|
/*
|
|
|
|
* Called from C code, this handles an IPI.
|
|
|
|
*/
|
|
|
|
void handle_IPI(int ipinr, struct pt_regs *regs);
|
|
|
|
|
2006-02-16 11:08:09 +00:00
|
|
|
/*
|
2009-05-28 13:16:52 +00:00
|
|
|
* Setup the set of possible CPUs (via set_cpu_possible)
|
2006-02-16 11:08:09 +00:00
|
|
|
*/
|
|
|
|
extern void smp_init_cpus(void);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
2011-04-03 12:01:30 +00:00
|
|
|
* Provide a function to raise an IPI cross call on CPUs in callmap.
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
2011-04-03 12:01:30 +00:00
|
|
|
extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int));
|
2005-11-08 10:40:10 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* 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 *);
|
|
|
|
|
2005-11-08 15:35:23 +00:00
|
|
|
/*
|
|
|
|
* Called from platform specific assembly code, this is the
|
|
|
|
* secondary CPU entry point.
|
|
|
|
*/
|
|
|
|
asmlinkage void secondary_start_kernel(void);
|
|
|
|
|
2010-12-03 11:09:48 +00:00
|
|
|
|
2005-06-18 08:33:31 +00:00
|
|
|
/*
|
|
|
|
* Initial data for bringing up a secondary CPU.
|
|
|
|
*/
|
|
|
|
struct secondary_data {
|
|
|
|
unsigned long pgdir;
|
2011-05-26 10:22:44 +00:00
|
|
|
unsigned long swapper_pg_dir;
|
2005-06-18 08:33:31 +00:00
|
|
|
void *stack;
|
|
|
|
};
|
|
|
|
extern struct secondary_data secondary_data;
|
2012-06-12 10:16:27 +00:00
|
|
|
extern volatile int pen_release;
|
2005-06-18 08:33:31 +00:00
|
|
|
|
2005-11-02 22:24:33 +00:00
|
|
|
extern int __cpu_disable(void);
|
|
|
|
|
|
|
|
extern void __cpu_die(unsigned int cpu);
|
|
|
|
extern void cpu_die(void);
|
|
|
|
|
2008-06-10 18:48:30 +00:00
|
|
|
extern void arch_send_call_function_single_ipi(int cpu);
|
2009-05-17 15:20:18 +00:00
|
|
|
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
|
2012-11-06 02:48:40 +00:00
|
|
|
extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask);
|
2008-06-10 18:48:30 +00:00
|
|
|
|
2011-09-08 08:06:10 +00:00
|
|
|
struct smp_operations {
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
/*
|
|
|
|
* Setup the set of possible CPUs (via set_cpu_possible)
|
|
|
|
*/
|
|
|
|
void (*smp_init_cpus)(void);
|
|
|
|
/*
|
|
|
|
* Initialize cpu_possible map, and enable coherency
|
|
|
|
*/
|
|
|
|
void (*smp_prepare_cpus)(unsigned int max_cpus);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Perform platform specific initialisation of the specified CPU.
|
|
|
|
*/
|
|
|
|
void (*smp_secondary_init)(unsigned int cpu);
|
|
|
|
/*
|
|
|
|
* Boot a secondary CPU, and assign it the specified idle task.
|
|
|
|
* This also gives us the initial stack to use for this CPU.
|
|
|
|
*/
|
|
|
|
int (*smp_boot_secondary)(unsigned int cpu, struct task_struct *idle);
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
|
|
int (*cpu_kill)(unsigned int cpu);
|
|
|
|
void (*cpu_die)(unsigned int cpu);
|
|
|
|
int (*cpu_disable)(unsigned int cpu);
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* set platform specific SMP operations
|
|
|
|
*/
|
|
|
|
extern void smp_set_ops(struct smp_operations *);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#endif /* ifndef __ASM_ARM_SMP_H */
|