Linux Kernel  3.7.1
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cpu.h
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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 safe_smp_processor_id() 0
20 #define stack_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 #endif
32 
33 DECLARE_PER_CPU(int, cpu_state);
34 
35 int mwait_usable(const struct cpuinfo_x86 *);
36 
37 #endif /* _ASM_X86_CPU_H */