1#ifndef __ASM_SMP_H 2#define __ASM_SMP_H 3 4 5#if defined(CONFIG_SMP) 6 7/* Page Zero Location PDC will look for the address to branch to when we poke 8** slave CPUs still in "Icache loop". 9*/ 10#define PDC_OS_BOOT_RENDEZVOUS 0x10 11#define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 12 13#ifndef ASSEMBLY 14#include <linux/bitops.h> 15#include <linux/threads.h> /* for NR_CPUS */ 16#include <linux/cpumask.h> 17typedef unsigned long address_t; 18 19 20/* 21 * Private routines/data 22 * 23 * physical and logical are equivalent until we support CPU hotplug. 24 */ 25#define cpu_number_map(cpu) (cpu) 26#define cpu_logical_map(cpu) (cpu) 27 28extern void smp_send_reschedule(int cpu); 29extern void smp_send_all_nop(void); 30 31extern void arch_send_call_function_single_ipi(int cpu); 32extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 33 34#endif /* !ASSEMBLY */ 35 36/* 37 * This magic constant controls our willingness to transfer 38 * a process across CPUs. Such a transfer incurs cache and tlb 39 * misses. The current value is inherited from i386. Still needs 40 * to be tuned for parisc. 41 */ 42 43#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */ 44 45#define raw_smp_processor_id() (current_thread_info()->cpu) 46 47#else /* CONFIG_SMP */ 48 49static inline void smp_send_all_nop(void) { return; } 50 51#endif 52 53#define NO_PROC_ID 0xFF /* No processor magic marker */ 54#define ANY_PROC_ID 0xFF /* Any processor magic marker */ 55static inline int __cpu_disable (void) { 56 return 0; 57} 58static inline void __cpu_die (unsigned int cpu) { 59 while(1) 60 ; 61} 62extern int __cpu_up (unsigned int cpu); 63 64#endif /* __ASM_SMP_H */ 65