#ifndef __ASM_SMP_H #define __ASM_SMP_H #ifndef __ASSEMBLY__ #include <linux/cpumask.h> #include <linux/init.h> /* * We need the APIC definitions automatically as part of 'smp.h' */ #ifdef CONFIG_X86_LOCAL_APIC # include <asm/mpspec.h> # include <asm/apic.h> # ifdef CONFIG_X86_IO_APIC # include <asm/io_apic.h> # endif #endif extern cpumask_t cpu_callout_map; extern cpumask_t cpu_callin_map; extern int smp_num_siblings; extern unsigned int num_processors; extern void smp_alloc_memory(void); extern void lock_ipi_call_lock(void); extern void unlock_ipi_call_lock(void); extern void (*mtrr_hook) (void); extern void zap_low_mappings (void); extern u8 __initdata x86_cpu_to_apicid_init[]; extern void *x86_cpu_to_apicid_early_ptr; DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_t, cpu_core_map); DECLARE_PER_CPU(u8, cpu_llc_id); DECLARE_PER_CPU(u8, x86_cpu_to_apicid); #ifdef CONFIG_HOTPLUG_CPU extern void cpu_exit_clear(void); extern void cpu_uninit(void); extern void remove_siblinginfo(int cpu); #endif /* Globals due to paravirt */ extern void set_cpu_sibling_map(int cpu); struct smp_ops { void (*smp_prepare_boot_cpu)(void); void (*smp_prepare_cpus)(unsigned max_cpus); int (*cpu_up)(unsigned cpu); void (*smp_cpus_done)(unsigned max_cpus); void (*smp_send_stop)(void); void (*smp_send_reschedule)(int cpu); int (*smp_call_function_mask)(cpumask_t mask, void (*func)(void *info), void *info, int wait); }; #ifdef CONFIG_SMP extern struct smp_ops smp_ops; static inline void smp_prepare_boot_cpu(void) { smp_ops.smp_prepare_boot_cpu(); } static inline void smp_prepare_cpus(unsigned int max_cpus) { smp_ops.smp_prepare_cpus(max_cpus); } static inline int __cpu_up(unsigned int cpu) { return smp_ops.cpu_up(cpu); } static inline void smp_cpus_done(unsigned int max_cpus) { smp_ops.smp_cpus_done(max_cpus); } static inline void smp_send_stop(void) { smp_ops.smp_send_stop(); } static inline void smp_send_reschedule(int cpu) { smp_ops.smp_send_reschedule(cpu); } static inline int smp_call_function_mask(cpumask_t mask, void (*func) (void *info), void *info, int wait) { return smp_ops.smp_call_function_mask(mask, func, info, wait); } void native_smp_prepare_boot_cpu(void); void native_smp_prepare_cpus(unsigned int max_cpus); int native_cpu_up(unsigned int cpunum); void native_smp_cpus_done(unsigned int max_cpus); #ifndef CONFIG_PARAVIRT #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0) #endif extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); /* * This function is needed by all SMP systems. It must _always_ be valid * from the initial startup. We map APIC_BASE very early in page_setup(), * so this is correct in the x86 case. */ DECLARE_PER_CPU(int, cpu_number); #define raw_smp_processor_id() (x86_read_percpu(cpu_number)) #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) extern int safe_smp_processor_id(void); void __cpuinit smp_store_cpu_info(int id); /* We don't mark CPUs online until __cpu_up(), so we need another measure */ static inline int num_booting_cpus(void) { return cpus_weight(cpu_callout_map); } #else /* CONFIG_SMP */ #define safe_smp_processor_id() 0 #define cpu_physical_id(cpu) boot_cpu_physical_apicid #endif /* !CONFIG_SMP */ #ifdef CONFIG_X86_LOCAL_APIC static __inline int logical_smp_processor_id(void) { /* we don't want to mark this access volatile - bad code generation */ return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR)); } # ifdef APIC_DEFINITION extern int hard_smp_processor_id(void); # else # include <mach_apicdef.h> static inline int hard_smp_processor_id(void) { /* we don't want to mark this access volatile - bad code generation */ return GET_APIC_ID(*(u32 *)(APIC_BASE + APIC_ID)); } # endif /* APIC_DEFINITION */ #else /* CONFIG_X86_LOCAL_APIC */ # ifndef CONFIG_SMP # define hard_smp_processor_id() 0 # endif #endif /* CONFIG_X86_LOCAL_APIC */ #endif /* !ASSEMBLY */ #endif