57 строки
1.4 KiB
C
57 строки
1.4 KiB
C
#ifndef __ASM_SH_SMP_H
|
|
#define __ASM_SH_SMP_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/cpumask.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <asm/atomic.h>
|
|
#include <asm/current.h>
|
|
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
|
#define hard_smp_processor_id() plat_smp_processor_id()
|
|
|
|
/* Map from cpu id to sequential logical cpu number. */
|
|
extern int __cpu_number_map[NR_CPUS];
|
|
#define cpu_number_map(cpu) __cpu_number_map[cpu]
|
|
|
|
/* The reverse map from sequential logical cpu number to cpu id. */
|
|
extern int __cpu_logical_map[NR_CPUS];
|
|
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
|
|
|
|
/* I've no idea what the real meaning of this is */
|
|
#define PROC_CHANGE_PENALTY 20
|
|
|
|
#define NO_PROC_ID (-1)
|
|
|
|
struct smp_fn_call_struct {
|
|
spinlock_t lock;
|
|
atomic_t finished;
|
|
void (*fn)(void *);
|
|
void *data;
|
|
};
|
|
|
|
extern struct smp_fn_call_struct smp_fn_call;
|
|
|
|
#define SMP_MSG_FUNCTION 0
|
|
#define SMP_MSG_RESCHEDULE 1
|
|
#define SMP_MSG_NR 2
|
|
|
|
void plat_smp_setup(void);
|
|
void plat_prepare_cpus(unsigned int max_cpus);
|
|
int plat_smp_processor_id(void);
|
|
void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
|
|
void plat_send_ipi(unsigned int cpu, unsigned int message);
|
|
int plat_register_ipi_handler(unsigned int message,
|
|
void (*handler)(void *), void *arg);
|
|
|
|
#else
|
|
|
|
#define hard_smp_processor_id() (0)
|
|
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#endif /* __ASM_SH_SMP_H */
|