mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
78 lines
3.0 KiB
C
78 lines
3.0 KiB
C
/*-
|
|
* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_GLOBALDATA_H_
|
|
#define _MACHINE_GLOBALDATA_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/queue.h>
|
|
|
|
/*
|
|
* This structure maps out the global data that needs to be kept on a
|
|
* per-cpu basis. genassym uses this to generate offsets for the assembler
|
|
* code, which also provides external symbols so that C can get at them as
|
|
* though they were really globals. This structure is pointed to by
|
|
* the per-cpu system value (see alpha_pal_rdval() and alpha_pal_wrval()).
|
|
* Inside the kernel, the globally reserved register t7 is used to
|
|
* point at the globaldata structure.
|
|
*/
|
|
struct globaldata {
|
|
struct proc *gd_curproc; /* current process */
|
|
struct proc *gd_idleproc; /* idle process */
|
|
struct proc *gd_fpcurproc; /* fp state owner */
|
|
struct pcb *gd_curpcb; /* current pcb */
|
|
struct timeval gd_switchtime;
|
|
int gd_switchticks;
|
|
u_int gd_cpuid; /* this cpu number */
|
|
u_int gd_other_cpus; /* all other cpus */
|
|
u_int64_t gd_idlepcbphys; /* pa of gd_idlepcb */
|
|
u_int64_t gd_pending_ipis; /* pending IPI events */
|
|
struct pmap *gd_current_pmap; /* which pmap is active */
|
|
u_int32_t gd_next_asn; /* next ASN to allocate */
|
|
u_int32_t gd_current_asngen; /* ASN rollover check */
|
|
|
|
SLIST_ENTRY(globaldata) gd_allcpu;
|
|
int gd_witness_spin_check;
|
|
#ifdef KTR_PERCPU
|
|
volatile int gd_ktr_idx; /* Index into trace table */
|
|
char *gd_ktr_buf;
|
|
char gd_ktr_buf_data[0];
|
|
#endif
|
|
};
|
|
|
|
SLIST_HEAD(cpuhead, globaldata);
|
|
extern struct cpuhead cpuhead;
|
|
|
|
void globaldata_init(struct globaldata *pcpu, int cpuid, size_t sz);
|
|
struct globaldata *globaldata_find(int cpuid);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_GLOBALDATA_H_ */
|