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 /*
  13  * Trampoline 80x86 program as an array.
  14  */
  15 extern const unsigned char trampoline_data [];
  16 extern const unsigned char trampoline_end  [];
  17 extern unsigned char *trampoline_base;
  18
  19 struct smp_ops {
  20         void (*smp_prepare_boot_cpu)(void);
  21         void (*smp_prepare_cpus)(unsigned max_cpus);
  22         int (*cpu_up)(unsigned cpu);
  23         void (*smp_cpus_done)(unsigned max_cpus);
  24
  25         void (*smp_send_stop)(void);
  26         void (*smp_send_reschedule)(int cpu);
  27         int (*smp_call_function_mask)(cpumask_t mask,
  28                                       void (*func)(void *info), void *info,
  29                                       int wait);
  30 };
  31
  32 /* Globals due to paravirt */
  33 extern void set_cpu_sibling_map(int cpu);
  34
  35 #ifdef CONFIG_SMP
  36 #ifndef CONFIG_PARAVIRT
  37 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
  38 #endif
  39 extern struct smp_ops smp_ops;
  40
  41 static inline void smp_send_stop(void)
  42 {
  43         smp_ops.smp_send_stop();
  44 }
  45
  46 static inline void smp_prepare_boot_cpu(void)
  47 {
  48         smp_ops.smp_prepare_boot_cpu();
  49 }
  50
  51 static inline void smp_prepare_cpus(unsigned int max_cpus)
  52 {
  53         smp_ops.smp_prepare_cpus(max_cpus);
  54 }
  55
  56 static inline void smp_cpus_done(unsigned int max_cpus)
  57 {
  58         smp_ops.smp_cpus_done(max_cpus);
  59 }
  60
  61 static inline int __cpu_up(unsigned int cpu)
  62 {
  63         return smp_ops.cpu_up(cpu);
  64 }
  65
  66 static inline void smp_send_reschedule(int cpu)
  67 {
  68         smp_ops.smp_send_reschedule(cpu);
  69 }
  70
  71 static inline int smp_call_function_mask(cpumask_t mask,
  72                                          void (*func) (void *info), void *info,
  73                                          int wait)
  74 {
  75         return smp_ops.smp_call_function_mask(mask, func, info, wait);
  76 }
  77
  78 void native_smp_prepare_boot_cpu(void);
  79 void native_smp_prepare_cpus(unsigned int max_cpus);
  80 void native_smp_cpus_done(unsigned int max_cpus);
  81 int native_cpu_up(unsigned int cpunum);
  82
  83 extern int __cpu_disable(void);
  84 extern void __cpu_die(unsigned int cpu);
  85
  86 extern unsigned disabled_cpus;
  87 extern void prefill_possible_map(void);
  88
  89 #define SMP_TRAMPOLINE_BASE 0x6000
  90 extern unsigned long setup_trampoline(void);
  91 #endif
  92
  93 #ifdef CONFIG_X86_32
  94 # include "smp_32.h"
  95 #else
  96 # include "smp_64.h"
  97 #endif
  98
  99 #ifdef CONFIG_HOTPLUG_CPU
 100 extern void cpu_exit_clear(void);
 101 extern void cpu_uninit(void);
 102 extern void remove_siblinginfo(int cpu);
 103 #endif
 104
 105 extern void smp_alloc_memory(void);
 106 extern void lock_ipi_call_lock(void);
 107 extern void unlock_ipi_call_lock(void);
 108 #endif /* __ASSEMBLY__ */
 109 #endif