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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/smp.h | |
3 | * | |
4 | * Copyright (C) 2004-2005 ARM Ltd. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | #ifndef __ASM_ARM_SMP_H | |
11 | #define __ASM_ARM_SMP_H | |
12 | ||
13 | #include <linux/config.h> | |
14 | #include <linux/threads.h> | |
15 | #include <linux/cpumask.h> | |
16 | #include <linux/thread_info.h> | |
17 | ||
18 | #include <asm/arch/smp.h> | |
19 | ||
20 | #ifndef CONFIG_SMP | |
21 | # error "<asm-arm/smp.h> included in non-SMP build" | |
22 | #endif | |
23 | ||
39c715b7 | 24 | #define raw_smp_processor_id() (current_thread_info()->cpu) |
1da177e4 | 25 | |
1da177e4 LT |
26 | /* |
27 | * at the moment, there's not a big penalty for changing CPUs | |
28 | * (the >big< penalty is running SMP in the first place) | |
29 | */ | |
30 | #define PROC_CHANGE_PENALTY 15 | |
31 | ||
32 | struct seq_file; | |
33 | ||
34 | /* | |
35 | * generate IPI list text | |
36 | */ | |
37 | extern void show_ipi_list(struct seq_file *p); | |
38 | ||
39 | /* | |
40 | * Move global data into per-processor storage. | |
41 | */ | |
42 | extern void smp_store_cpu_info(unsigned int cpuid); | |
43 | ||
44 | /* | |
45 | * Raise an IPI cross call on CPUs in callmap. | |
46 | */ | |
47 | extern void smp_cross_call(cpumask_t callmap); | |
48 | ||
49 | /* | |
50 | * Boot a secondary CPU, and assign it the specified idle task. | |
51 | * This also gives us the initial stack to use for this CPU. | |
52 | */ | |
53 | extern int boot_secondary(unsigned int cpu, struct task_struct *); | |
54 | ||
e65f38ed RK |
55 | /* |
56 | * Perform platform specific initialisation of the specified CPU. | |
57 | */ | |
58 | extern void platform_secondary_init(unsigned int cpu); | |
59 | ||
60 | /* | |
61 | * Initial data for bringing up a secondary CPU. | |
62 | */ | |
63 | struct secondary_data { | |
64 | unsigned long pgdir; | |
65 | void *stack; | |
66 | }; | |
67 | extern struct secondary_data secondary_data; | |
68 | ||
1da177e4 | 69 | #endif /* ifndef __ASM_ARM_SMP_H */ |