1 /* smp.h: PPC specific SMP stuff.
3 * Original was a copy of sparc smp.h. Now heavily modified
6 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
7 * Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
13 #include <linux/kernel.h>
14 #include <linux/bitops.h>
15 #include <linux/errno.h>
16 #include <linux/cpumask.h>
17 #include <linux/threads.h>
24 unsigned long loops_per_jiffy;
26 unsigned long *pgd_cache;
27 unsigned long *pte_cache;
28 unsigned long pgtable_cache_sz;
31 extern struct cpuinfo_PPC cpu_data[];
32 extern cpumask_t cpu_online_map;
33 extern cpumask_t cpu_possible_map;
34 extern unsigned long smp_proc_in_lock[];
35 extern volatile unsigned long cpu_callin_map[];
36 extern int smp_tb_synchronized;
37 extern struct smp_ops_t *smp_ops;
39 extern void smp_send_tlb_invalidate(int);
40 extern void smp_send_xmon_break(int cpu);
42 extern void smp_message_recv(int, struct pt_regs *);
44 extern int __cpu_disable(void);
45 extern void __cpu_die(unsigned int cpu);
46 extern void cpu_die(void) __attribute__((noreturn));
48 #define raw_smp_processor_id() (current_thread_info()->cpu)
50 extern int __cpu_up(unsigned int cpu);
52 extern int smp_hw_index[];
53 #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
54 #define get_hard_smp_processor_id(cpu) (smp_hw_index[(cpu)])
55 #define set_hard_smp_processor_id(cpu, phys)\
56 (smp_hw_index[(cpu)] = (phys))
58 #endif /* __ASSEMBLY__ */
60 #else /* !(CONFIG_SMP) */
62 static inline void cpu_die(void) { }
63 #define get_hard_smp_processor_id(cpu) 0
64 #define set_hard_smp_processor_id(cpu, phys)
65 #define hard_smp_processor_id() 0
67 #endif /* !(CONFIG_SMP) */
70 extern int boot_cpuid;
71 extern int boot_cpuid_phys;
74 #endif /* !(_PPC_SMP_H) */
75 #endif /* __KERNEL__ */