1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_CPU_H |
3 | #define _ASM_X86_CPU_H |
4 | |
5 | #include <linux/device.h> |
6 | #include <linux/cpu.h> |
7 | #include <linux/topology.h> |
8 | #include <linux/nodemask.h> |
9 | #include <linux/percpu.h> |
10 | |
11 | #ifdef CONFIG_SMP |
12 | |
13 | extern void prefill_possible_map(void); |
14 | |
15 | #else /* CONFIG_SMP */ |
16 | |
17 | static inline void prefill_possible_map(void) {} |
18 | |
19 | #define cpu_physical_id(cpu) boot_cpu_physical_apicid |
20 | #define cpu_acpi_id(cpu) 0 |
21 | #define safe_smp_processor_id() 0 |
22 | |
23 | #endif /* CONFIG_SMP */ |
24 | |
25 | struct x86_cpu { |
26 | struct cpu cpu; |
27 | }; |
28 | |
29 | #ifdef CONFIG_HOTPLUG_CPU |
30 | extern int arch_register_cpu(int num); |
31 | extern void arch_unregister_cpu(int); |
32 | extern void start_cpu0(void); |
33 | #ifdef CONFIG_DEBUG_HOTPLUG_CPU0 |
34 | extern int _debug_hotplug_cpu(int cpu, int action); |
35 | #endif |
36 | #endif |
37 | |
38 | int mwait_usable(const struct cpuinfo_x86 *); |
39 | |
40 | unsigned int x86_family(unsigned int sig); |
41 | unsigned int x86_model(unsigned int sig); |
42 | unsigned int x86_stepping(unsigned int sig); |
43 | #endif /* _ASM_X86_CPU_H */ |
44 | |