75 строки
1.7 KiB
C
75 строки
1.7 KiB
C
#ifndef __ASM_SMP_H
|
|
#define __ASM_SMP_H
|
|
|
|
#include <linux/config.h>
|
|
|
|
#if defined(CONFIG_SMP)
|
|
|
|
/* Page Zero Location PDC will look for the address to branch to when we poke
|
|
** slave CPUs still in "Icache loop".
|
|
*/
|
|
#define PDC_OS_BOOT_RENDEZVOUS 0x10
|
|
#define PDC_OS_BOOT_RENDEZVOUS_HI 0x28
|
|
|
|
#ifndef ASSEMBLY
|
|
#include <linux/bitops.h>
|
|
#include <linux/threads.h> /* for NR_CPUS */
|
|
#include <linux/cpumask.h>
|
|
typedef unsigned long address_t;
|
|
|
|
extern cpumask_t cpu_online_map;
|
|
|
|
|
|
/*
|
|
* Private routines/data
|
|
*
|
|
* physical and logical are equivalent until we support CPU hotplug.
|
|
*/
|
|
#define cpu_number_map(cpu) (cpu)
|
|
#define cpu_logical_map(cpu) (cpu)
|
|
|
|
extern void smp_send_reschedule(int cpu);
|
|
extern void smp_send_all_nop(void);
|
|
|
|
#endif /* !ASSEMBLY */
|
|
|
|
/*
|
|
* This magic constant controls our willingness to transfer
|
|
* a process across CPUs. Such a transfer incurs cache and tlb
|
|
* misses. The current value is inherited from i386. Still needs
|
|
* to be tuned for parisc.
|
|
*/
|
|
|
|
#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
|
|
|
|
#undef ENTRY_SYS_CPUS
|
|
#ifdef ENTRY_SYS_CPUS
|
|
#define STATE_RENDEZVOUS 0
|
|
#define STATE_STOPPED 1
|
|
#define STATE_RUNNING 2
|
|
#define STATE_HALTED 3
|
|
#endif
|
|
|
|
extern unsigned long cpu_present_mask;
|
|
|
|
#define raw_smp_processor_id() (current_thread_info()->cpu)
|
|
|
|
#else /* CONFIG_SMP */
|
|
|
|
static inline void smp_send_all_nop(void) { return; }
|
|
|
|
#endif
|
|
|
|
#define NO_PROC_ID 0xFF /* No processor magic marker */
|
|
#define ANY_PROC_ID 0xFF /* Any processor magic marker */
|
|
static inline int __cpu_disable (void) {
|
|
return 0;
|
|
}
|
|
static inline void __cpu_die (unsigned int cpu) {
|
|
while(1)
|
|
;
|
|
}
|
|
extern int __cpu_up (unsigned int cpu);
|
|
|
|
#endif /* __ASM_SMP_H */
|