statclock: Fix intr% counting on heavily interrupted systems
[dragonfly.git] / sys / cpu / i386 / include / cpu.h
CommitLineData
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1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91
37 * $FreeBSD: src/sys/i386/include/cpu.h,v 1.43.2.2 2001/06/15 09:37:57 scottl Exp $
91bd9c1e 38 * $DragonFly: src/sys/cpu/i386/include/cpu.h,v 1.25 2007/03/01 01:46:52 corecode Exp $
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39 */
40
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41#ifndef _CPU_CPU_H_
42#define _CPU_CPU_H_
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43
44/*
45 * Definitions unique to i386 cpu support.
46 */
a9295349 47#ifndef _CPU_PSL_H_
f8334305 48#include <machine/psl.h>
1bd40720 49#endif
a9295349 50#ifndef _CPU_FRAME_H_
f8334305 51#include <machine/frame.h>
1bd40720 52#endif
a9295349 53#ifndef _CPU_SEGMENTS_H_
f8334305 54#include <machine/segments.h>
1bd40720 55#endif
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56
57/*
58 * definitions of cpu-dependent requirements
59 * referenced in generic code
60 */
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61
62#define cpu_exec(p) /* nothing */
63#define cpu_swapin(p) /* nothing */
08f2f1bb 64#define cpu_setstack(lp, ap) ((lp)->lwp_md.md_regs[SP] = (ap))
984263bc 65
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66#define CLKF_INTR(intr_nest) ((intr_nest) > 1)
67#define CLKF_INTR_TD(td) ((td)->td_flags & TDF_INTTHREAD)
88c4d2f6 68#define CLKF_PC(framep) ((framep)->if_eip)
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69
70/*
71 * Preempt the current process if in interrupt from user mode,
72 * or after the current trap/syscall if in system mode.
73 *
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74 * We now have to use a locked bus cycle due to LWKT_RESCHED/WAKEUP
75 * signalling by other cpus.
984263bc 76 */
0a3f9b47 77#define need_lwkt_resched() \
b12defdc 78 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
0a3f9b47 79#define need_user_resched() \
2a418930 80 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
235957ed 81#define need_proftick() \
2a418930 82 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC)
0f7a3396 83#define need_ipiq() \
2a418930 84 atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ)
235957ed 85#define signotify() \
2a418930 86 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL)
a722be49 87#define sigupcall() \
2a418930 88 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_UPCALL)
0a3f9b47 89#define clear_user_resched() \
2a418930 90 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
0a3f9b47 91#define clear_lwkt_resched() \
2a418930 92 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
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93#define clear_quickret() \
94 atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET)
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95#define user_resched_wanted() \
96 (mycpu->gd_reqflags & RQF_AST_USER_RESCHED)
97#define lwkt_resched_wanted() \
98 (mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED)
99#define any_resched_wanted() \
100 (mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED|RQF_AST_USER_RESCHED))
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101
102/*
103 * CTL_MACHDEP definitions.
104 */
b13267a5 105#define CPU_CONSDEV 1 /* cdev_t: console terminal device */
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106#define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */
107#define CPU_DISRTCSET 3 /* int: disable resettodr() call */
108#define CPU_BOOTINFO 4 /* struct: bootinfo */
109#define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */
110#define CPU_MAXID 6 /* number of valid machdep ids */
111
112#define CTL_MACHDEP_NAMES { \
113 { 0, 0 }, \
114 { "console_device", CTLTYPE_STRUCT }, \
115 { "adjkerntz", CTLTYPE_INT }, \
116 { "disable_rtc_set", CTLTYPE_INT }, \
117 { "bootinfo", CTLTYPE_STRUCT }, \
118 { "wall_cmos_clock", CTLTYPE_INT }, \
119}
120
121#ifdef _KERNEL
1bd40720 122
bb3cd951 123struct lwp;
1bd40720 124
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125extern char btext[];
126extern char etext[];
984263bc 127
3ae0cd58 128void fork_trampoline (void);
91bd9c1e 129void generic_lwp_return (struct lwp *, struct trapframe *);
c7eb0589 130void fork_return (struct lwp *, struct trapframe *);
1bd40720 131
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132#endif
133
a7231bde 134#endif /* !_CPU_CPU_H_ */