#ifndef __ASM_SMP_H #define __ASM_SMP_H /* * We need the APIC definitions automatically as part of 'smp.h' */ #ifndef __ASSEMBLY__ #include <linux/config.h> #include <linux/kernel.h> #include <linux/threads.h> #include <linux/cpumask.h> #endif #ifdef CONFIG_X86_LOCAL_APIC #ifndef __ASSEMBLY__ #include <asm/fixmap.h> #include <asm/bitops.h> #include <asm/mpspec.h> #ifdef CONFIG_X86_IO_APIC #include <asm/io_apic.h> #endif #include <asm/apic.h> #endif #endif #define BAD_APICID 0xFFu #ifdef CONFIG_SMP #ifndef __ASSEMBLY__ /* * Private routines/data */ extern void smp_alloc_memory(void); extern int pic_mode; extern int smp_num_siblings; extern cpumask_t cpu_sibling_map[]; extern cpumask_t cpu_core_map[]; extern void smp_flush_tlb(void); extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs); extern void smp_invalidate_rcv(void); /* Process an NMI */ extern void (*mtrr_hook) (void); extern void zap_low_mappings (void); #define MAX_APICID 256 extern u8 x86_cpu_to_apicid[]; /* * 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. */ #define __smp_processor_id() (current_thread_info()->cpu) extern cpumask_t cpu_callout_map; extern cpumask_t cpu_callin_map; #define cpu_possible_map cpu_callout_map /* 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); } #ifdef CONFIG_X86_LOCAL_APIC #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(*(unsigned long *)(APIC_BASE+APIC_ID)); } #endif 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(*(unsigned long *)(APIC_BASE+APIC_LDR)); } #endif #endif /* !__ASSEMBLY__ */ #define NO_PROC_ID 0xFF /* No processor magic marker */ #endif #endif