#ifndef __LINUX_SMP_H
#define __LINUX_SMP_H


#include <linux/errno.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/cpumask.h>
#include <linux/init.h>

extern void cpu_idle(void);

typedef void (*smp_call_func_t)(void *info);
struct call_single_data {
	struct list_head list;
	smp_call_func_t func;
	void *info;
	u16 flags;
	u16 priv;
};

extern unsigned int total_cpus;

int smp_call_function_single(int cpuid, smp_call_func_t func, void *info,
			     int wait);

#ifdef CONFIG_SMP

#include <linux/preempt.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/thread_info.h>
#include <asm/smp.h>


extern void smp_send_stop(void);

extern void smp_send_reschedule(int cpu);


extern void smp_prepare_cpus(unsigned int max_cpus);

extern int __cpu_up(unsigned int cpunum);

extern void smp_cpus_done(unsigned int max_cpus);

int smp_call_function(smp_call_func_t func, void *info, int wait);
void smp_call_function_many(const struct cpumask *mask,
			    smp_call_func_t func, void *info, bool wait);

void __smp_call_function_single(int cpuid, struct call_single_data *data,
				int wait);

int smp_call_function_any(const struct cpumask *mask,
			  smp_call_func_t func, void *info, int wait);

#ifdef CONFIG_USE_GENERIC_SMP_HELPERS
void __init call_function_init(void);
void generic_smp_call_function_single_interrupt(void);
void generic_smp_call_function_interrupt(void);
void ipi_call_lock(void);
void ipi_call_unlock(void);
void ipi_call_lock_irq(void);
void ipi_call_unlock_irq(void);
#else
static inline void call_function_init(void) { }
#endif

int on_each_cpu(smp_call_func_t func, void *info, int wait);

void on_each_cpu_mask(const struct cpumask *mask, smp_call_func_t func,
		void *info, bool wait);

void on_each_cpu_cond(bool (*cond_func)(int cpu, void *info),
		smp_call_func_t func, void *info, bool wait,
		gfp_t gfp_flags);

void smp_prepare_boot_cpu(void);

extern unsigned int setup_max_cpus;
extern void __init setup_nr_cpu_ids(void);
extern void __init smp_init(void);

#else 

static inline void smp_send_stop(void) { }

#define raw_smp_processor_id()			0
static inline int up_smp_call_function(smp_call_func_t func, void *info)
{
	return 0;
}
#define smp_call_function(func, info, wait) \
			(up_smp_call_function(func, info))
#define on_each_cpu(func,info,wait)		\
	({					\
		local_irq_disable();		\
		func(info);			\
		local_irq_enable();		\
		0;				\
	})
#define on_each_cpu_mask(mask, func, info, wait) \
	do {						\
		if (cpumask_test_cpu(0, (mask))) {	\
			local_irq_disable();		\
			(func)(info);			\
			local_irq_enable();		\
		}					\
	} while (0)
#define on_each_cpu_cond(cond_func, func, info, wait, gfp_flags)\
	do {							\
		void *__info = (info);				\
		preempt_disable();				\
		if ((cond_func)(0, __info)) {			\
			local_irq_disable();			\
			(func)(__info);				\
			local_irq_enable();			\
		}						\
		preempt_enable();				\
	} while (0)

static inline void smp_send_reschedule(int cpu) { }
#define num_booting_cpus()			1
#define smp_prepare_boot_cpu()			do {} while (0)
#define smp_call_function_many(mask, func, info, wait) \
			(up_smp_call_function(func, info))
static inline void call_function_init(void) { }

static inline int
smp_call_function_any(const struct cpumask *mask, smp_call_func_t func,
		      void *info, int wait)
{
	return smp_call_function_single(0, func, info, wait);
}

#endif 

#ifdef CONFIG_DEBUG_PREEMPT
  extern unsigned int debug_smp_processor_id(void);
# define smp_processor_id() debug_smp_processor_id()
#else
# define smp_processor_id() raw_smp_processor_id()
#endif

#define get_cpu()		({ preempt_disable(); smp_processor_id(); })
#define put_cpu()		preempt_enable()

extern void arch_disable_smp_support(void);

void smp_setup_processor_id(void);

#endif