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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef __ASM_SH_SMP_H
2#define __ASM_SH_SMP_H
3
4#include <linux/bitops.h>
5#include <linux/cpumask.h>
6
7#ifdef CONFIG_SMP
8
9#include <linux/spinlock.h>
10#include <asm/atomic.h>
11#include <asm/current.h>
12
13#define raw_smp_processor_id() (current_thread_info()->cpu)
14#define hard_smp_processor_id() plat_smp_processor_id()
15
16/* Map from cpu id to sequential logical cpu number. */
17extern int __cpu_number_map[NR_CPUS];
18#define cpu_number_map(cpu) __cpu_number_map[cpu]
19
20/* The reverse map from sequential logical cpu number to cpu id. */
21extern int __cpu_logical_map[NR_CPUS];
22#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
23
24/* I've no idea what the real meaning of this is */
25#define PROC_CHANGE_PENALTY 20
26
27#define NO_PROC_ID (-1)
28
29struct smp_fn_call_struct {
30 spinlock_t lock;
31 atomic_t finished;
32 void (*fn)(void *);
33 void *data;
34};
35
36extern struct smp_fn_call_struct smp_fn_call;
37
38#define SMP_MSG_FUNCTION 0
39#define SMP_MSG_RESCHEDULE 1
40#define SMP_MSG_NR 2
41
42void plat_smp_setup(void);
43void plat_prepare_cpus(unsigned int max_cpus);
44int plat_smp_processor_id(void);
45void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
46void plat_send_ipi(unsigned int cpu, unsigned int message);
47int plat_register_ipi_handler(unsigned int message,
48 void (*handler)(void *), void *arg);
49
50#else
51
52#define hard_smp_processor_id() (0)
53
54#endif /* CONFIG_SMP */
55
56#endif /* __ASM_SH_SMP_H */