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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_SMP_H #define _ASM_X86_SMP_H #ifndef __ASSEMBLY__ #include <linux/cpumask.h> #include <asm/percpu.h>
#include <asm/thread_info.h> #include <asm/cpumask.h>
extern int smp_num_siblings; extern unsigned int num_processors;
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map); DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map); /* cpus sharing the last level cache: */ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map); DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id); DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
static inline struct cpumask *cpu_llc_shared_mask(int cpu) { return per_cpu(cpu_llc_shared_map, cpu); }
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid); DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid); DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid); #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32) DECLARE_EARLY_PER_CPU_READ_MOSTLY(int, x86_cpu_to_logical_apicid); #endif
struct task_struct;
struct smp_ops { void (*smp_prepare_boot_cpu)(void); void (*smp_prepare_cpus)(unsigned max_cpus); void (*smp_cpus_done)(unsigned max_cpus);
void (*stop_other_cpus)(int wait); void (*crash_stop_other_cpus)(void); void (*smp_send_reschedule)(int cpu);
int (*cpu_up)(unsigned cpu, struct task_struct *tidle); int (*cpu_disable)(void); void (*cpu_die)(unsigned int cpu); void (*play_dead)(void);
void (*send_call_func_ipi)(const struct cpumask *mask); void (*send_call_func_single_ipi)(int cpu); };
/* Globals due to paravirt */ extern void set_cpu_sibling_map(int cpu);
#ifdef CONFIG_SMP extern struct smp_ops smp_ops;
static inline void smp_send_stop(void) { smp_ops.stop_other_cpus(0); }
static inline void stop_other_cpus(void) { smp_ops.stop_other_cpus(1); }
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 void smp_cpus_done(unsigned int max_cpus) { smp_ops.smp_cpus_done(max_cpus); }
static inline int __cpu_up(unsigned int cpu, struct task_struct *tidle) { return smp_ops.cpu_up(cpu, tidle); }
static inline int __cpu_disable(void) { return smp_ops.cpu_disable(); }
static inline void __cpu_die(unsigned int cpu) { smp_ops.cpu_die(cpu); }
static inline void play_dead(void) { smp_ops.play_dead(); }
static inline void smp_send_reschedule(int cpu) { smp_ops.smp_send_reschedule(cpu); }
static inline void arch_send_call_function_single_ipi(int cpu) { smp_ops.send_call_func_single_ipi(cpu); }
static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) { smp_ops.send_call_func_ipi(mask); }
void cpu_disable_common(void); void native_smp_prepare_boot_cpu(void); void native_smp_prepare_cpus(unsigned int max_cpus); void calculate_max_logical_packages(void); void native_smp_cpus_done(unsigned int max_cpus); int common_cpu_up(unsigned int cpunum, struct task_struct *tidle); int native_cpu_up(unsigned int cpunum, struct task_struct *tidle); int native_cpu_disable(void); int common_cpu_die(unsigned int cpu); void native_cpu_die(unsigned int cpu); void hlt_play_dead(void); void native_play_dead(void); void play_dead_common(void); void wbinvd_on_cpu(int cpu); int wbinvd_on_all_cpus(void); void cond_wakeup_cpu0(void);
void native_smp_send_reschedule(int cpu); void native_send_call_func_ipi(const struct cpumask *mask); void native_send_call_func_single_ipi(int cpu); void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle);
void smp_store_boot_cpu_info(void); void smp_store_cpu_info(int id);
asmlinkage __visible void smp_reboot_interrupt(void); __visible void smp_reschedule_interrupt(struct pt_regs *regs); __visible void smp_call_function_interrupt(struct pt_regs *regs); __visible void smp_call_function_single_interrupt(struct pt_regs *r);
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) #define cpu_acpi_id(cpu) per_cpu(x86_cpu_to_acpiid, 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. */ #define raw_smp_processor_id() this_cpu_read(cpu_number) #define __smp_processor_id() __this_cpu_read(cpu_number)
#ifdef CONFIG_X86_32 extern int safe_smp_processor_id(void); #else # define safe_smp_processor_id() smp_processor_id() #endif
#else /* !CONFIG_SMP */ #define wbinvd_on_cpu(cpu) wbinvd() static inline int wbinvd_on_all_cpus(void) { wbinvd(); return 0; } #endif /* CONFIG_SMP */
extern unsigned disabled_cpus;
#ifdef CONFIG_X86_LOCAL_APIC extern int hard_smp_processor_id(void);
#else /* CONFIG_X86_LOCAL_APIC */ #define hard_smp_processor_id() 0 #endif /* CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_DEBUG_NMI_SELFTEST extern void nmi_selftest(void); #else #define nmi_selftest() do { } while (0) #endif
#endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_SMP_H */
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