mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 18:06:49 +07:00
b62655f4c6
Add function arch_send_wakeup_ipi_mask(), so that platform code can use it as an easy way to wake up cores that are in WFI. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/*
|
|
* 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);
|
|
|
|
|
|
/*
|
|
* 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 volatile int pen_release;
|
|
|
|
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);
|
|
|
|
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
|
|
};
|
|
|
|
/*
|
|
* set platform specific SMP operations
|
|
*/
|
|
extern void smp_set_ops(struct smp_operations *);
|
|
|
|
#endif /* ifndef __ASM_ARM_SMP_H */
|