include/asm-x86/smp.h

   1 #ifndef _ASM_X86_SMP_H_
   2 #define _ASM_X86_SMP_H_
   3 #ifndef __ASSEMBLY__
   4 #include <linux/cpumask.h>
   5 #include <linux/init.h>
   6
   7 extern cpumask_t cpu_callout_map;
   8
   9 extern int smp_num_siblings;
  10 extern unsigned int num_processors;
  11
  12 struct smp_ops {
  13         void (*smp_prepare_boot_cpu)(void);
  14         void (*smp_prepare_cpus)(unsigned max_cpus);
  15         int (*cpu_up)(unsigned cpu);
  16         void (*smp_cpus_done)(unsigned max_cpus);
  17
  18         void (*smp_send_stop)(void);
  19         void (*smp_send_reschedule)(int cpu);
  20         int (*smp_call_function_mask)(cpumask_t mask,
  21                                       void (*func)(void *info), void *info,
  22                                       int wait);
  23 };
  24
  25 /* Globals due to paravirt */
  26 extern void set_cpu_sibling_map(int cpu);
  27
  28 #ifdef CONFIG_SMP
  29 extern struct smp_ops smp_ops;
  30
  31 static inline void smp_send_stop(void)
  32 {
  33         smp_ops.smp_send_stop();
  34 }
  35
  36 static inline void smp_prepare_boot_cpu(void)
  37 {
  38         smp_ops.smp_prepare_boot_cpu();
  39 }
  40
  41 static inline void smp_prepare_cpus(unsigned int max_cpus)
  42 {
  43         smp_ops.smp_prepare_cpus(max_cpus);
  44 }
  45
  46 static inline void smp_cpus_done(unsigned int max_cpus)
  47 {
  48         smp_ops.smp_cpus_done(max_cpus);
  49 }
  50
  51 static inline int __cpu_up(unsigned int cpu)
  52 {
  53         return smp_ops.cpu_up(cpu);
  54 }
  55
  56 static inline void smp_send_reschedule(int cpu)
  57 {
  58         smp_ops.smp_send_reschedule(cpu);
  59 }
  60
  61 static inline int smp_call_function_mask(cpumask_t mask,
  62                                          void (*func) (void *info), void *info,
  63                                          int wait)
  64 {
  65         return smp_ops.smp_call_function_mask(mask, func, info, wait);
  66 }
  67
  68 void native_smp_prepare_boot_cpu(void);
  69 void native_smp_prepare_cpus(unsigned int max_cpus);
  70 void native_smp_cpus_done(unsigned int max_cpus);
  71 int native_cpu_up(unsigned int cpunum);
  72
  73 extern unsigned disabled_cpus;
  74 extern void prefill_possible_map(void);
  75 #endif
  76
  77 #ifdef CONFIG_X86_32
  78 # include "smp_32.h"
  79 #else
  80 # include "smp_64.h"
  81 #endif
  82
  83 #ifdef CONFIG_HOTPLUG_CPU
  84 extern void cpu_exit_clear(void);
  85 extern void cpu_uninit(void);
  86 extern void remove_siblinginfo(int cpu);
  87 #endif
  88
  89 extern void smp_alloc_memory(void);
  90 extern void lock_ipi_call_lock(void);
  91 extern void unlock_ipi_call_lock(void);
  92 #endif /* __ASSEMBLY__ */
  93 #endif