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/*
* arch/arm/include/asm/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/threads.h>
#include <linux/cpumask.h>
#include <linux/thread_info.h>
#include <mach/smp.h>
#ifndef CONFIG_SMP
# error "<asm/smp.h> included in non-SMP build"
#endif
#define raw_smp_processor_id() (current_thread_info()->cpu)
/*
* 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);
/*
* Called from assembly code, this handles an IPI.
*/
asmlinkage void do_IPI(struct pt_regs *regs);
/*
* Setup the SMP cpu_possible_map
*/
extern void smp_init_cpus(void);
/*
* 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);
/*
* Broadcast a timer interrupt to the other CPUs.
*/
extern void smp_send_timer(void);
/*
* Broadcast a clock event to other CPUs.
*/
extern void smp_timer_broadcast(cpumask_t mask);
/*
* 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 *);
/*
* Called from platform specific assembly code, this is the
* secondary CPU entry point.
*/
asmlinkage void secondary_start_kernel(void);
/*
* 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;
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);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
/*
* Local timer interrupt handling function (can be IPI'ed).
*/
extern void local_timer_interrupt(void);
#ifdef CONFIG_LOCAL_TIMERS
/*
* Stop a local timer interrupt.
*/
extern void local_timer_stop(void);
/*
* Platform provides this to acknowledge a local timer IRQ
*/
extern int local_timer_ack(void);
#else
static inline void local_timer_stop(void)
{
}
#endif
/*
* Setup a local timer interrupt for a CPU.
*/
extern void local_timer_setup(void);
/*
* show local interrupt info
*/
extern void show_local_irqs(struct seq_file *);
/*
* Called from assembly, this is the local timer IRQ handler
*/
asmlinkage void do_local_timer(struct pt_regs *);
#endif /* ifndef __ASM_ARM_SMP_H */
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