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 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 28 extern void smp_send_reschedule(int cpu); 29 extern void smp_send_all_nop(void); 30 31 extern void arch_send_call_function_single_ipi(int cpu); 32 extern 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 49 static 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 */ 55 static inline int __cpu_disable (void) { 56 return 0; 57 } 58 static inline void __cpu_die (unsigned int cpu) { 59 while(1) 60 ; 61 } 62 extern int __cpu_up (unsigned int cpu); 63 64 #endif /* __ASM_SMP_H */ 65