| #ifndef __ASM_SMP_H |
| #define __ASM_SMP_H |
| |
| #include <linux/cpumask.h> |
| #include <linux/init.h> |
| |
| /* |
| * We need the APIC definitions automatically as part of 'smp.h' |
| */ |
| #include <asm/apic.h> |
| #include <asm/io_apic.h> |
| #include <asm/mpspec.h> |
| #include <asm/pda.h> |
| #include <asm/thread_info.h> |
| |
| extern cpumask_t cpu_callout_map; |
| extern cpumask_t cpu_initialized; |
| |
| extern int smp_num_siblings; |
| extern unsigned int num_processors; |
| |
| extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *), |
| void *info, int wait); |
| |
| extern u16 __initdata x86_cpu_to_apicid_init[]; |
| extern u16 __initdata x86_bios_cpu_apicid_init[]; |
| extern void *x86_cpu_to_apicid_early_ptr; |
| extern void *x86_bios_cpu_apicid_early_ptr; |
| |
| DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); |
| DECLARE_PER_CPU(cpumask_t, cpu_core_map); |
| DECLARE_PER_CPU(u16, cpu_llc_id); |
| DECLARE_PER_CPU(u16, x86_cpu_to_apicid); |
| DECLARE_PER_CPU(u16, x86_bios_cpu_apicid); |
| |
| static inline int cpu_present_to_apicid(int mps_cpu) |
| { |
| if (cpu_present(mps_cpu)) |
| return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu); |
| else |
| return BAD_APICID; |
| } |
| |
| #ifdef CONFIG_SMP |
| |
| #define SMP_TRAMPOLINE_BASE 0x6000 |
| |
| extern int __cpu_disable(void); |
| extern void __cpu_die(unsigned int cpu); |
| extern void prefill_possible_map(void); |
| extern unsigned __cpuinitdata disabled_cpus; |
| |
| #define raw_smp_processor_id() read_pda(cpunumber) |
| #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) |
| |
| #define stack_smp_processor_id() \ |
| ({ \ |
| struct thread_info *ti; \ |
| __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ |
| ti->cpu; \ |
| }) |
| |
| /* |
| * On x86 all CPUs are mapped 1:1 to the APIC space. This simplifies |
| * scheduling and IPI sending and compresses data structures. |
| */ |
| static inline int num_booting_cpus(void) |
| { |
| return cpus_weight(cpu_callout_map); |
| } |
| |
| extern void smp_send_reschedule(int cpu); |
| |
| #else /* CONFIG_SMP */ |
| |
| extern unsigned int boot_cpu_id; |
| #define cpu_physical_id(cpu) boot_cpu_id |
| #define stack_smp_processor_id() 0 |
| |
| #endif /* !CONFIG_SMP */ |
| |
| #define safe_smp_processor_id() smp_processor_id() |
| |
| 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)); |
| } |
| |
| 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 |
| |