2 * Copyright (c) 2001 Wind River Systems, Inc.
4 * Written by: John Baldwin <jhb@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the author nor the names of any co-contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <sys/queue.h>
38 #include <machine/pcpu.h>
46 * This structure maps out the global data that needs to be kept on a
47 * per-cpu basis. The members are accessed via the PCPU_GET/SET/PTR
48 * macros defined in <machine/pcpu.h>. Machine dependent fields are
49 * defined in the PCPU_MD_FIELDS macro defined in <machine/pcpu.h>.
52 struct thread *pc_curthread; /* Current thread */
53 struct thread *pc_idlethread; /* Idle thread */
54 struct thread *pc_fpcurthread; /* Fp state owner */
55 struct pcb *pc_curpcb; /* Current pcb */
56 struct bintime pc_switchtime;
58 u_int pc_cpuid; /* This cpu number */
59 u_int pc_cpumask; /* This cpu mask */
60 u_int pc_other_cpus; /* Mask of all other cpus */
61 SLIST_ENTRY(pcpu) pc_allcpu;
62 struct lock_list_entry *pc_spinlocks;
64 int pc_ktr_idx; /* Index into trace table */
70 SLIST_HEAD(cpuhead, pcpu);
72 extern struct cpuhead cpuhead;
74 #define curthread PCPU_GET(curthread)
75 #define CURPROC (curthread->td_proc)
76 #define curproc (curthread->td_proc)
77 #define curksegrp (curthread->td_ksegrp)
78 #define curkse (curthread->td_kse)
81 * Machine dependent callouts. cpu_pcpu_init() is responsible for
82 * initializing machine dependent fields of struct pcpu, and
83 * db_show_mdpcpu() is responsible for handling machine dependent
84 * fields for the DDB 'show pcpu' command.
86 void cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size);
87 void db_show_mdpcpu(struct pcpu *pcpu);
89 void pcpu_destroy(struct pcpu *pcpu);
90 struct pcpu *pcpu_find(u_int cpuid);
91 void pcpu_init(struct pcpu *pcpu, int cpuid, size_t size);
95 #endif /* _SYS_PCPU_H_ */