Release 4.11 arch/arm/include/asm/smp.h

/*
 *  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;
		
u64 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 void secondary_startup_arm(void);

extern int __cpu_disable(void);

extern void __cpu_die(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);
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);
	
bool  (*cpu_can_disable)(unsigned int cpu);
	
int  (*cpu_disable)(unsigned int cpu);
#endif
#endif
};


struct of_cpu_method {
	
const char *method;
	
const 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(const struct smp_operations *);

#endif /* ifndef __ASM_ARM_SMP_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Russell King
124
33.79%
14
45.16%
Marc Zyngier
114
31.06%
2
6.45%
Stephen Boyd
38
10.35%
2
6.45%
Shawn Guo
24
6.54%
2
6.45%
Linus Torvalds (pre-git)
13
3.54%
2
6.45%
Nico Pitre
13
3.54%
1
3.23%
Jens Axboe
12
3.27%
1
3.23%
Jonathan Austin
8
2.18%
1
3.23%
Yingjoe Chen
7
1.91%
1
3.23%
Arnd Bergmann
7
1.91%
1
3.23%
Catalin Marinas
4
1.09%
1
3.23%
Masahiro Yamada
2
0.54%
2
6.45%
Ingo Molnar
1
0.27%
1
3.23%
Total
367
100.00%
31
100.00%
Directory: arch/arm/include/asm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.