sh: provide percpu CPU states for hotplug notifiers.
[pandora-kernel.git] / arch / sh / include / asm / smp.h
1 #ifndef __ASM_SH_SMP_H
2 #define __ASM_SH_SMP_H
3
4 #include <linux/bitops.h>
5 #include <linux/cpumask.h>
6 #include <asm/smp-ops.h>
7
8 #ifdef CONFIG_SMP
9
10 #include <linux/spinlock.h>
11 #include <asm/atomic.h>
12 #include <asm/current.h>
13 #include <asm/percpu.h>
14
15 #define raw_smp_processor_id()  (current_thread_info()->cpu)
16
17 /* Map from cpu id to sequential logical cpu number. */
18 extern int __cpu_number_map[NR_CPUS];
19 #define cpu_number_map(cpu)  __cpu_number_map[cpu]
20
21 /* The reverse map from sequential logical cpu number to cpu id.  */
22 extern int __cpu_logical_map[NR_CPUS];
23 #define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
24
25 enum {
26         SMP_MSG_FUNCTION,
27         SMP_MSG_RESCHEDULE,
28         SMP_MSG_FUNCTION_SINGLE,
29         SMP_MSG_TIMER,
30
31         SMP_MSG_NR,     /* must be last */
32 };
33
34 DECLARE_PER_CPU(int, cpu_state);
35
36 void smp_message_recv(unsigned int msg);
37 void smp_timer_broadcast(const struct cpumask *mask);
38
39 void local_timer_interrupt(void);
40 void local_timer_setup(unsigned int cpu);
41
42 void arch_send_call_function_single_ipi(int cpu);
43 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
44
45 static inline int hard_smp_processor_id(void)
46 {
47         extern struct plat_smp_ops *mp_ops;     /* private */
48
49         if (!mp_ops)
50                 return 0;       /* boot CPU */
51
52         return mp_ops->smp_processor_id();
53 }
54
55 #else
56
57 #define hard_smp_processor_id() (0)
58
59 #endif /* CONFIG_SMP */
60
61 #endif /* __ASM_SH_SMP_H */