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
  12 extern void prefill_possible_map(void);
  13
  14 #else /* CONFIG_SMP */
  15
  16 static 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
  24 struct x86_cpu {
  25         struct cpu cpu;
  26 };
  27
  28 #ifdef CONFIG_HOTPLUG_CPU
  29 extern int arch_register_cpu(int num);
  30 extern void arch_unregister_cpu(int);
  31 extern void start_cpu0(void);
  32 #ifdef CONFIG_DEBUG_HOTPLUG_CPU0
  33 extern int _debug_hotplug_cpu(int cpu, int action);
  34 #endif
  35 #endif
  36
  37 int mwait_usable(const struct cpuinfo_x86 *);
  38
  39 unsigned int x86_family(unsigned int sig);
  40 unsigned int x86_model(unsigned int sig);
  41 unsigned int x86_stepping(unsigned int sig);
  42 #endif /* _ASM_X86_CPU_H */