forked from mirrors/linux
2c86562047
To make use of per_cpu variables in interrupt code per_cpu_init() must be done after setup_per_cpu_areas(). This is achieved by calling it in smp_prepare_boot_cpu() via a new smp_ops method. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
121 lines
2.4 KiB
C
121 lines
2.4 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License. See the file "COPYING" in the main directory of this
|
|
* archive for more details.
|
|
*
|
|
* Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
|
|
* Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
|
|
* Copyright (C) 2000, 2001, 2002 Ralf Baechle
|
|
* Copyright (C) 2000, 2001 Broadcom Corporation
|
|
*/
|
|
#ifndef __ASM_SMP_OPS_H
|
|
#define __ASM_SMP_OPS_H
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <asm/mips-cps.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
struct task_struct;
|
|
|
|
struct plat_smp_ops {
|
|
void (*send_ipi_single)(int cpu, unsigned int action);
|
|
void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
|
|
void (*init_secondary)(void);
|
|
void (*smp_finish)(void);
|
|
int (*boot_secondary)(int cpu, struct task_struct *idle);
|
|
void (*smp_setup)(void);
|
|
void (*prepare_cpus)(unsigned int max_cpus);
|
|
void (*prepare_boot_cpu)(void);
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
int (*cpu_disable)(void);
|
|
void (*cpu_die)(unsigned int cpu);
|
|
#endif
|
|
#ifdef CONFIG_KEXEC
|
|
void (*kexec_nonboot_cpu)(void);
|
|
#endif
|
|
};
|
|
|
|
extern void register_smp_ops(const struct plat_smp_ops *ops);
|
|
|
|
static inline void plat_smp_setup(void)
|
|
{
|
|
extern const struct plat_smp_ops *mp_ops; /* private */
|
|
|
|
mp_ops->smp_setup();
|
|
}
|
|
|
|
extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
|
|
extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
|
|
unsigned int action);
|
|
|
|
#else /* !CONFIG_SMP */
|
|
|
|
struct plat_smp_ops;
|
|
|
|
static inline void plat_smp_setup(void)
|
|
{
|
|
/* UP, nothing to do ... */
|
|
}
|
|
|
|
static inline void register_smp_ops(const struct plat_smp_ops *ops)
|
|
{
|
|
}
|
|
|
|
#endif /* !CONFIG_SMP */
|
|
|
|
static inline int register_up_smp_ops(void)
|
|
{
|
|
#ifdef CONFIG_SMP_UP
|
|
extern const struct plat_smp_ops up_smp_ops;
|
|
|
|
register_smp_ops(&up_smp_ops);
|
|
|
|
return 0;
|
|
#else
|
|
return -ENODEV;
|
|
#endif
|
|
}
|
|
|
|
static inline int register_cmp_smp_ops(void)
|
|
{
|
|
#ifdef CONFIG_MIPS_CMP
|
|
extern const struct plat_smp_ops cmp_smp_ops;
|
|
|
|
if (!mips_cm_present())
|
|
return -ENODEV;
|
|
|
|
register_smp_ops(&cmp_smp_ops);
|
|
|
|
return 0;
|
|
#else
|
|
return -ENODEV;
|
|
#endif
|
|
}
|
|
|
|
static inline int register_vsmp_smp_ops(void)
|
|
{
|
|
#ifdef CONFIG_MIPS_MT_SMP
|
|
extern const struct plat_smp_ops vsmp_smp_ops;
|
|
|
|
register_smp_ops(&vsmp_smp_ops);
|
|
|
|
return 0;
|
|
#else
|
|
return -ENODEV;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_MIPS_CPS
|
|
extern int register_cps_smp_ops(void);
|
|
#else
|
|
static inline int register_cps_smp_ops(void)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ASM_SMP_OPS_H */
|