LXR linux/arch/x86/include/asm/cpu.h

   1#ifndef _ASM_X86_CPU_H
   2#define _ASM_X86_CPU_H
   3
   4#include <linux/device.h>
   5#include <linux/cpu.h>
   6#include <linux/topology.h>
   7#include <linux/nodemask.h>
   8#include <linux/percpu.h>
   9
  10#ifdef CONFIG_SMP
  11
  12extern void prefill_possible_map(void);
  13
  14#else /* CONFIG_SMP */
  15
  16static inline void prefill_possible_map(void) {}
  17
  18#define cpu_physical_id(cpu)                    boot_cpu_physical_apicid
  19#define cpu_acpi_id(cpu)                        0
  20#define safe_smp_processor_id()                 0
  21
  22#endif /* CONFIG_SMP */
  23
  24struct x86_cpu {
  25        struct cpu cpu;
  26};
  27
  28#ifdef CONFIG_HOTPLUG_CPU
  29extern int arch_register_cpu(int num);
  30extern void arch_unregister_cpu(int);
  31extern void start_cpu0(void);
  32#ifdef CONFIG_DEBUG_HOTPLUG_CPU0
  33extern int _debug_hotplug_cpu(int cpu, int action);
  34#endif
  35#endif
  36
  37int mwait_usable(const struct cpuinfo_x86 *);
  38
  39unsigned int x86_family(unsigned int sig);
  40unsigned int x86_model(unsigned int sig);
  41unsigned int x86_stepping(unsigned int sig);
  42#endif /* _ASM_X86_CPU_H */
  43