![travis@sgi.com](/assets/img/avatar_default.png)
Clean up references to x86_cpu_to_apicid. Removes extraneous comments and standardizes on "x86_*_early_ptr" for the early kernel init references. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
166 lines
3.9 KiB
C
166 lines
3.9 KiB
C
#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
|