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/config.h>
14 #include <linux/kernel.h>
15 #include <linux/bitops.h>
16 #include <linux/errno.h>
17 #include <linux/cpumask.h>
18 #include <linux/threads.h>
25 unsigned long loops_per_jiffy;
27 unsigned long *pgd_cache;
28 unsigned long *pte_cache;
29 unsigned long pgtable_cache_sz;
32 extern struct cpuinfo_PPC cpu_data[];
33 extern cpumask_t cpu_online_map;
34 extern cpumask_t cpu_possible_map;
35 extern unsigned long smp_proc_in_lock[];
36 extern volatile unsigned long cpu_callin_map[];
37 extern int smp_tb_synchronized;
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 #define NO_PROC_ID 0xFF /* No processor magic marker */
45 #define PROC_CHANGE_PENALTY 20
47 #define smp_processor_id() (current_thread_info()->cpu)
49 extern int __cpu_up(unsigned int cpu);
51 extern int smp_hw_index[];
52 #define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
54 struct klock_info_struct {
55 unsigned long kernel_flag;
59 extern struct klock_info_struct klock_info;
60 #define KLOCK_HELD 0xffffffff
61 #define KLOCK_CLEAR 0x0
63 #endif /* __ASSEMBLY__ */
65 #else /* !(CONFIG_SMP) */
67 #endif /* !(CONFIG_SMP) */
69 #endif /* !(_PPC_SMP_H) */
70 #endif /* __KERNEL__ */