| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |