2 * linux/include/asm-arm/smp.h
4 * Copyright (C) 2004-2005 ARM Ltd.
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.
10 #ifndef __ASM_ARM_SMP_H
11 #define __ASM_ARM_SMP_H
13 #include <linux/threads.h>
14 #include <linux/cpumask.h>
15 #include <linux/thread_info.h>
17 #include <asm/arch/smp.h>
20 # error "<asm-arm/smp.h> included in non-SMP build"
23 #define raw_smp_processor_id() (current_thread_info()->cpu)
26 * at the moment, there's not a big penalty for changing CPUs
27 * (the >big< penalty is running SMP in the first place)
29 #define PROC_CHANGE_PENALTY 15
34 * generate IPI list text
36 extern void show_ipi_list(struct seq_file *p);
39 * Called from assembly code, this handles an IPI.
41 asmlinkage void do_IPI(struct pt_regs *regs);
44 * Setup the SMP cpu_possible_map
46 extern void smp_init_cpus(void);
49 * Move global data into per-processor storage.
51 extern void smp_store_cpu_info(unsigned int cpuid);
54 * Raise an IPI cross call on CPUs in callmap.
56 extern void smp_cross_call(cpumask_t callmap);
59 * Broadcast a timer interrupt to the other CPUs.
61 extern void smp_send_timer(void);
64 * Boot a secondary CPU, and assign it the specified idle task.
65 * This also gives us the initial stack to use for this CPU.
67 extern int boot_secondary(unsigned int cpu, struct task_struct *);
70 * Called from platform specific assembly code, this is the
71 * secondary CPU entry point.
73 asmlinkage void secondary_start_kernel(void);
76 * Perform platform specific initialisation of the specified CPU.
78 extern void platform_secondary_init(unsigned int cpu);
81 * Initial data for bringing up a secondary CPU.
83 struct secondary_data {
87 extern struct secondary_data secondary_data;
89 extern int __cpu_disable(void);
90 extern int mach_cpu_disable(unsigned int cpu);
92 extern void __cpu_die(unsigned int cpu);
93 extern void cpu_die(void);
95 extern void platform_cpu_die(unsigned int cpu);
96 extern int platform_cpu_kill(unsigned int cpu);
97 extern void platform_cpu_enable(unsigned int cpu);
99 #ifdef CONFIG_LOCAL_TIMERS
101 * Setup a local timer interrupt for a CPU.
103 extern void local_timer_setup(unsigned int cpu);
106 * Stop a local timer interrupt.
108 extern void local_timer_stop(unsigned int cpu);
111 * Platform provides this to acknowledge a local timer IRQ
113 extern int local_timer_ack(void);
117 static inline void local_timer_setup(unsigned int cpu)
121 static inline void local_timer_stop(unsigned int cpu)
128 * show local interrupt info
130 extern void show_local_irqs(struct seq_file *);
133 * Called from assembly, this is the local timer IRQ handler
135 asmlinkage void do_local_timer(struct pt_regs *);
137 #endif /* ifndef __ASM_ARM_SMP_H */