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#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
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