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kernel/linux-rt-4.4.41/arch/sh/include/asm/smp.h 1.68 KB
5113f6f70   김현기   kernel add
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  #ifndef __ASM_SH_SMP_H
  #define __ASM_SH_SMP_H
  
  #include <linux/bitops.h>
  #include <linux/cpumask.h>
  #include <asm/smp-ops.h>
  
  #ifdef CONFIG_SMP
  
  #include <linux/spinlock.h>
  #include <linux/atomic.h>
  #include <asm/current.h>
  #include <asm/percpu.h>
  
  #define raw_smp_processor_id()	(current_thread_info()->cpu)
  
  /* Map from cpu id to sequential logical cpu number. */
  extern int __cpu_number_map[NR_CPUS];
  #define cpu_number_map(cpu)  __cpu_number_map[cpu]
  
  /* The reverse map from sequential logical cpu number to cpu id.  */
  extern int __cpu_logical_map[NR_CPUS];
  #define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
  
  enum {
  	SMP_MSG_FUNCTION,
  	SMP_MSG_RESCHEDULE,
  	SMP_MSG_FUNCTION_SINGLE,
  	SMP_MSG_TIMER,
  
  	SMP_MSG_NR,	/* must be last */
  };
  
  DECLARE_PER_CPU(int, cpu_state);
  
  void smp_message_recv(unsigned int msg);
  void smp_timer_broadcast(const struct cpumask *mask);
  
  void local_timer_interrupt(void);
  void local_timer_setup(unsigned int cpu);
  void local_timer_stop(unsigned int cpu);
  
  void arch_send_call_function_single_ipi(int cpu);
  void arch_send_call_function_ipi_mask(const struct cpumask *mask);
  
  void native_play_dead(void);
  void native_cpu_die(unsigned int cpu);
  int native_cpu_disable(unsigned int cpu);
  
  #ifdef CONFIG_HOTPLUG_CPU
  void play_dead_common(void);
  extern int __cpu_disable(void);
  
  static inline void __cpu_die(unsigned int cpu)
  {
  	extern struct plat_smp_ops *mp_ops;     /* private */
  
  	mp_ops->cpu_die(cpu);
  }
  #endif
  
  static inline int hard_smp_processor_id(void)
  {
  	extern struct plat_smp_ops *mp_ops;	/* private */
  
  	if (!mp_ops)
  		return 0;	/* boot CPU */
  
  	return mp_ops->smp_processor_id();
  }
  
  #else
  
  #define hard_smp_processor_id()	(0)
  
  #endif /* CONFIG_SMP */
  
  #endif /* __ASM_SH_SMP_H */