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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*/
#ifndef _SYS_SMP_H_
#define _SYS_SMP_H_
#ifdef _KERNEL
#include <machine/smp.h>
#ifndef LOCORE
#ifdef SMP
extern void (*cpustop_restartfunc)(void);
extern int mp_ncpus;
extern int smp_active;
extern int smp_started;
extern int smp_cpus;
extern u_int all_cpus;
extern volatile u_int started_cpus;
extern volatile u_int stopped_cpus;
/*
* Machine dependent functions used to initialize MP support.
*
* The cpu_mp_probe() should check to see if MP support is present and return
* zero if it is not or non-zero if it is. If MP support is present, then
* cpu_mp_start() will be called so that MP can be enabled. This function
* should do things such as startup secondary processors. It should also
* setup mp_ncpus, all_cpus, and smp_cpus. It should also ensure that
* smp_active and smp_started are initialized at the appropriate time.
* Once cpu_mp_start() returns, machine independent MP startup code will be
* executed and a simple message will be output to the console. Finally,
* cpu_mp_announce() will be called so that machine dependent messages about
* the MP support may be output to the console if desired.
*/
void cpu_mp_announce(void);
int cpu_mp_probe(void);
void cpu_mp_start(void);
void forward_signal(struct proc *);
void forward_roundrobin(void);
int restart_cpus(u_int);
int stop_cpus(u_int);
void smp_rendezvous_action(void);
void smp_rendezvous(void (*)(void *),
void (*)(void *),
void (*)(void *),
void *arg);
#endif /* SMP */
#endif /* !LOCORE */
#endif /* _KERNEL */
#endif /* _SYS_SMP_H_ */
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