| /* |
| * 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)); |
| |
| /* |
| * Boot a secondary CPU, and assign it the specified idle task. |
| * This also gives us the initial stack to use for this CPU. |
| */ |
| extern int boot_secondary(unsigned int cpu, struct task_struct *); |
| |
| /* |
| * Called from platform specific assembly code, this is the |
| * secondary CPU entry point. |
| */ |
| asmlinkage void secondary_start_kernel(void); |
| |
| /* |
| * Perform platform specific initialisation of the specified CPU. |
| */ |
| extern void platform_secondary_init(unsigned int cpu); |
| |
| /* |
| * Initialize cpu_possible map, and enable coherency |
| */ |
| extern void platform_smp_prepare_cpus(unsigned int); |
| |
| /* |
| * Logical CPU mapping. |
| */ |
| extern int __cpu_logical_map[NR_CPUS]; |
| #define cpu_logical_map(cpu) __cpu_logical_map[cpu] |
| |
| /* |
| * Initial data for bringing up a secondary CPU. |
| */ |
| struct secondary_data { |
| unsigned long pgdir; |
| unsigned long swapper_pg_dir; |
| void *stack; |
| }; |
| extern struct secondary_data secondary_data; |
| |
| extern int __cpu_disable(void); |
| extern int platform_cpu_disable(unsigned int cpu); |
| |
| extern void __cpu_die(unsigned int cpu); |
| extern void cpu_die(void); |
| |
| extern void platform_cpu_die(unsigned int cpu); |
| extern int platform_cpu_kill(unsigned int cpu); |
| extern void platform_cpu_enable(unsigned int cpu); |
| |
| extern void arch_send_call_function_single_ipi(int cpu); |
| extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
| |
| /* |
| * show local interrupt info |
| */ |
| extern void show_local_irqs(struct seq_file *, int); |
| |
| #endif /* ifndef __ASM_ARM_SMP_H */ |