1/*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
27 */
28
29#ifndef _MACHINE_GLOBALDATA_H_
30#define _MACHINE_GLOBALDATA_H_
31
32#ifdef _KERNEL
33
34#include <sys/queue.h>
35
36/*
37 * This structure maps out the global data that needs to be kept on a
38 * per-cpu basis. genassym uses this to generate offsets for the assembler
39 * code, which also provides external symbols so that C can get at them as
40 * though they were really globals. This structure is pointed to by
41 * the per-cpu system value (see alpha_pal_rdval() and alpha_pal_wrval()).
42 * Inside the kernel, the globally reserved register t7 is used to
43 * point at the globaldata structure.
44 */
45struct globaldata {
46 struct proc *gd_curproc; /* current process */
47 struct proc *gd_idleproc; /* idle process */
48 struct proc *gd_fpcurproc; /* fp state owner */
49 struct pcb *gd_curpcb; /* current pcb */
50 struct timeval gd_switchtime;
51 int gd_switchticks;
52 u_int gd_cpuid; /* this cpu number */
53 u_int gd_other_cpus; /* all other cpus */
54 u_int64_t gd_idlepcbphys; /* pa of gd_idlepcb */
55 u_int64_t gd_pending_ipis; /* pending IPI events */
56 struct pmap *gd_current_pmap; /* which pmap is active */
57 u_int32_t gd_next_asn; /* next ASN to allocate */
58 u_int32_t gd_current_asngen; /* ASN rollover check */
59
60 SLIST_ENTRY(globaldata) gd_allcpu;
| 27 */
28
29#ifndef _MACHINE_GLOBALDATA_H_
30#define _MACHINE_GLOBALDATA_H_
31
32#ifdef _KERNEL
33
34#include <sys/queue.h>
35
36/*
37 * This structure maps out the global data that needs to be kept on a
38 * per-cpu basis. genassym uses this to generate offsets for the assembler
39 * code, which also provides external symbols so that C can get at them as
40 * though they were really globals. This structure is pointed to by
41 * the per-cpu system value (see alpha_pal_rdval() and alpha_pal_wrval()).
42 * Inside the kernel, the globally reserved register t7 is used to
43 * point at the globaldata structure.
44 */
45struct globaldata {
46 struct proc *gd_curproc; /* current process */
47 struct proc *gd_idleproc; /* idle process */
48 struct proc *gd_fpcurproc; /* fp state owner */
49 struct pcb *gd_curpcb; /* current pcb */
50 struct timeval gd_switchtime;
51 int gd_switchticks;
52 u_int gd_cpuid; /* this cpu number */
53 u_int gd_other_cpus; /* all other cpus */
54 u_int64_t gd_idlepcbphys; /* pa of gd_idlepcb */
55 u_int64_t gd_pending_ipis; /* pending IPI events */
56 struct pmap *gd_current_pmap; /* which pmap is active */
57 u_int32_t gd_next_asn; /* next ASN to allocate */
58 u_int32_t gd_current_asngen; /* ASN rollover check */
59
60 SLIST_ENTRY(globaldata) gd_allcpu;
|
62#ifdef KTR_PERCPU
63 volatile int gd_ktr_idx; /* Index into trace table */
64 char *gd_ktr_buf;
65 char gd_ktr_buf_data[0];
66#endif
67};
68
69SLIST_HEAD(cpuhead, globaldata);
70extern struct cpuhead cpuhead;
71
72void globaldata_init(struct globaldata *pcpu, int cpuid, size_t sz);
73struct globaldata *globaldata_find(int cpuid);
74
75#endif /* _KERNEL */
76
77#endif /* !_MACHINE_GLOBALDATA_H_ */
| 62#ifdef KTR_PERCPU
63 volatile int gd_ktr_idx; /* Index into trace table */
64 char *gd_ktr_buf;
65 char gd_ktr_buf_data[0];
66#endif
67};
68
69SLIST_HEAD(cpuhead, globaldata);
70extern struct cpuhead cpuhead;
71
72void globaldata_init(struct globaldata *pcpu, int cpuid, size_t sz);
73struct globaldata *globaldata_find(int cpuid);
74
75#endif /* _KERNEL */
76
77#endif /* !_MACHINE_GLOBALDATA_H_ */
|