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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | /* * arch/arm/include/asm/smp.h * * Copyright (C) 2004-2005 ARM Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_ARM_SMP_H #define __ASM_ARM_SMP_H #include <linux/threads.h> #include <linux/cpumask.h> #include <linux/thread_info.h> #ifndef CONFIG_SMP # error "<asm/smp.h> included in non-SMP build" #endif #define raw_smp_processor_id() (current_thread_info()->cpu) struct seq_file; /* * generate IPI list text */ extern void show_ipi_list(struct seq_file *, int); /* * Called from assembly code, this handles an IPI. */ asmlinkage void do_IPI(int ipinr, struct pt_regs *regs); /* * Called from C code, this handles an IPI. */ void handle_IPI(int ipinr, struct pt_regs *regs); /* * Setup the set of possible CPUs (via set_cpu_possible) */ extern void smp_init_cpus(void); /* * Provide a function to raise an IPI cross call on CPUs in callmap. */ extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int)); /* * Called from platform specific assembly code, this is the * secondary CPU entry point. */ asmlinkage void secondary_start_kernel(void); /* * Initial data for bringing up a secondary CPU. */ struct secondary_data { union { unsigned long mpu_rgn_szr; unsigned long pgdir; }; unsigned long swapper_pg_dir; void *stack; }; extern struct secondary_data secondary_data; extern volatile int pen_release; extern void secondary_startup(void); extern int __cpu_disable(void); extern void __cpu_die(unsigned int cpu); extern void cpu_die(void); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask); extern int register_ipi_completion(struct completion *completion, int cpu); struct smp_operations { #ifdef CONFIG_SMP /* * Setup the set of possible CPUs (via set_cpu_possible) */ void (*smp_init_cpus)(void); /* * Initialize cpu_possible map, and enable coherency */ void (*smp_prepare_cpus)(unsigned int max_cpus); /* * Perform platform specific initialisation of the specified CPU. */ void (*smp_secondary_init)(unsigned int cpu); /* * Boot a secondary CPU, and assign it the specified idle task. * This also gives us the initial stack to use for this CPU. */ int (*smp_boot_secondary)(unsigned int cpu, struct task_struct *idle); #ifdef CONFIG_HOTPLUG_CPU int (*cpu_kill)(unsigned int cpu); void (*cpu_die)(unsigned int cpu); int (*cpu_disable)(unsigned int cpu); #endif #endif }; struct of_cpu_method { const char *method; struct smp_operations *ops; }; #define CPU_METHOD_OF_DECLARE(name, _method, _ops) \ static const struct of_cpu_method __cpu_method_of_table_##name \ __used __section(__cpu_method_of_table) \ = { .method = _method, .ops = _ops } /* * set platform specific SMP operations */ extern void smp_set_ops(struct smp_operations *); #endif /* ifndef __ASM_ARM_SMP_H */ |