5 #include <linux/cpumask.h>
6 #include <linux/init.h>
9 * We need the APIC definitions automatically as part of 'smp.h'
11 #ifdef CONFIG_X86_LOCAL_APIC
12 # include <asm/mpspec.h>
13 # include <asm/apic.h>
14 # ifdef CONFIG_X86_IO_APIC
15 # include <asm/io_apic.h>
19 extern cpumask_t cpu_callin_map;
21 extern void (*mtrr_hook) (void);
22 extern void zap_low_mappings (void);
24 extern u8 __initdata x86_cpu_to_apicid_init[];
25 extern void *x86_cpu_to_apicid_early_ptr;
27 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
28 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
29 DECLARE_PER_CPU(u8, cpu_llc_id);
30 DECLARE_PER_CPU(u8, x86_cpu_to_apicid);
32 #ifdef CONFIG_HOTPLUG_CPU
33 extern void cpu_exit_clear(void);
34 extern void cpu_uninit(void);
35 extern void remove_siblinginfo(int cpu);
38 /* Globals due to paravirt */
39 extern void set_cpu_sibling_map(int cpu);
42 extern struct smp_ops smp_ops;
44 static inline void smp_prepare_boot_cpu(void)
46 smp_ops.smp_prepare_boot_cpu();
48 static inline void smp_prepare_cpus(unsigned int max_cpus)
50 smp_ops.smp_prepare_cpus(max_cpus);
52 static inline int __cpu_up(unsigned int cpu)
54 return smp_ops.cpu_up(cpu);
56 static inline void smp_cpus_done(unsigned int max_cpus)
58 smp_ops.smp_cpus_done(max_cpus);
61 static inline void smp_send_stop(void)
63 smp_ops.smp_send_stop();
65 static inline void smp_send_reschedule(int cpu)
67 smp_ops.smp_send_reschedule(cpu);
69 static inline int smp_call_function_mask(cpumask_t mask,
70 void (*func) (void *info), void *info,
73 return smp_ops.smp_call_function_mask(mask, func, info, wait);
76 void native_smp_prepare_boot_cpu(void);
77 void native_smp_prepare_cpus(unsigned int max_cpus);
78 int native_cpu_up(unsigned int cpunum);
79 void native_smp_cpus_done(unsigned int max_cpus);
81 #ifndef CONFIG_PARAVIRT
82 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
85 extern int __cpu_disable(void);
86 extern void __cpu_die(unsigned int cpu);
89 * This function is needed by all SMP systems. It must _always_ be valid
90 * from the initial startup. We map APIC_BASE very early in page_setup(),
91 * so this is correct in the x86 case.
93 DECLARE_PER_CPU(int, cpu_number);
94 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
96 #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
98 extern int safe_smp_processor_id(void);
100 void __cpuinit smp_store_cpu_info(int id);
102 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
103 static inline int num_booting_cpus(void)
105 return cpus_weight(cpu_callout_map);
108 #else /* CONFIG_SMP */
110 #define safe_smp_processor_id() 0
111 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
113 #endif /* !CONFIG_SMP */
115 #ifdef CONFIG_X86_LOCAL_APIC
117 static __inline int logical_smp_processor_id(void)
119 /* we don't want to mark this access volatile - bad code generation */
120 return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR));
123 # ifdef APIC_DEFINITION
124 extern int hard_smp_processor_id(void);
126 # include <mach_apicdef.h>
127 static inline int hard_smp_processor_id(void)
129 /* we don't want to mark this access volatile - bad code generation */
130 return GET_APIC_ID(*(u32 *)(APIC_BASE + APIC_ID));
132 # endif /* APIC_DEFINITION */
134 #else /* CONFIG_X86_LOCAL_APIC */
137 # define hard_smp_processor_id() 0
140 #endif /* CONFIG_X86_LOCAL_APIC */
142 #endif /* !ASSEMBLY */