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> 17 typedef unsigned long address_t; 18 19 extern cpumask_t cpu_online_map; 20 21 22 /* 23 * Private routines/data 24 * 25 * physical and logical are equivalent until we support CPU hotplug. 26 */ 27 #define cpu_number_map(cpu) (cpu) 28 #define cpu_logical_map(cpu) (cpu) 29 30 extern void smp_send_reschedule(int cpu); 31 extern void smp_send_all_nop(void); 32 33 extern void arch_send_call_function_single_ipi(int cpu); 34 extern void arch_send_call_function_ipi(cpumask_t mask); 35 36 #endif /* !ASSEMBLY */ 37 38 /* 39 * This magic constant controls our willingness to transfer 40 * a process across CPUs. Such a transfer incurs cache and tlb 41 * misses. The current value is inherited from i386. Still needs 42 * to be tuned for parisc. 43 */ 44 45 #define PROC_CHANGE_PENALTY 15 /* Schedule penalty */ 46 47 extern unsigned long cpu_present_mask; 48 49 #define raw_smp_processor_id() (current_thread_info()->cpu) 50 51 #else /* CONFIG_SMP */ 52 53 static inline void smp_send_all_nop(void) { return; } 54 55 #endif 56 57 #define NO_PROC_ID 0xFF /* No processor magic marker */ 58 #define ANY_PROC_ID 0xFF /* Any processor magic marker */ 59 static inline int __cpu_disable (void) { 60 return 0; 61 } 62 static inline void __cpu_die (unsigned int cpu) { 63 while(1) 64 ; 65 } 66 extern int __cpu_up (unsigned int cpu); 67 68 #endif /* __ASM_SMP_H */ 69