release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/include/asm/smp.h

   1 #ifndef __ASM_SH_SMP_H
   2 #define __ASM_SH_SMP_H
   3
   4 #include <linux/bitops.h>
   5 #include <linux/cpumask.h>
   6 #include <asm/smp-ops.h>
   7
   8 #ifdef CONFIG_SMP
   9
  10 #include <linux/spinlock.h>
  11 #include <asm/atomic.h>
  12 #include <asm/current.h>
  13 #include <asm/percpu.h>
  14
  15 #define raw_smp_processor_id()  (current_thread_info()->cpu)
  16
  17 /* Map from cpu id to sequential logical cpu number. */
  18 extern int __cpu_number_map[NR_CPUS];
  19 #define cpu_number_map(cpu)  __cpu_number_map[cpu]
  20
  21 /* The reverse map from sequential logical cpu number to cpu id.  */
  22 extern int __cpu_logical_map[NR_CPUS];
  23 #define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
  24
  25 enum {
  26         SMP_MSG_FUNCTION,
  27         SMP_MSG_RESCHEDULE,
  28         SMP_MSG_FUNCTION_SINGLE,
  29         SMP_MSG_TIMER,
  30
  31         SMP_MSG_NR,     /* must be last */
  32 };
  33
  34 DECLARE_PER_CPU(int, cpu_state);
  35
  36 void smp_message_recv(unsigned int msg);
  37 void smp_timer_broadcast(const struct cpumask *mask);
  38
  39 void local_timer_interrupt(void);
  40 void local_timer_setup(unsigned int cpu);
  41 void local_timer_stop(unsigned int cpu);
  42
  43 void arch_send_call_function_single_ipi(int cpu);
  44 void arch_send_call_function_ipi_mask(const struct cpumask *mask);
  45
  46 void native_play_dead(void);
  47 void native_cpu_die(unsigned int cpu);
  48 int native_cpu_disable(unsigned int cpu);
  49
  50 #ifdef CONFIG_HOTPLUG_CPU
  51 void play_dead_common(void);
  52 extern int __cpu_disable(void);
  53
  54 static inline void __cpu_die(unsigned int cpu)
  55 {
  56         extern struct plat_smp_ops *mp_ops;     /* private */
  57
  58         mp_ops->cpu_die(cpu);
  59 }
  60 #endif
  61
  62 static inline int hard_smp_processor_id(void)
  63 {
  64         extern struct plat_smp_ops *mp_ops;     /* private */
  65
  66         if (!mp_ops)
  67                 return 0;       /* boot CPU */
  68
  69         return mp_ops->smp_processor_id();
  70 }
  71
  72 #else
  73
  74 #define hard_smp_processor_id() (0)
  75
  76 #endif /* CONFIG_SMP */
  77
  78 #endif /* __ASM_SH_SMP_H */