statclock: Fix intr% counting on heavily interrupted systems
[dragonfly.git] / sys / cpu / x86_64 / include / cpu.h
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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 $
46d4e165 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
41#ifndef _CPU_CPU_H_
42#define _CPU_CPU_H_
43
46d4e165 44/*
b2b3ffcd 45 * Definitions unique to x86_64 cpu support.
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46 */
47#ifndef _CPU_PSL_H_
48#include <machine/psl.h>
49#endif
50#ifndef _CPU_FRAME_H_
51#include <machine/frame.h>
52#endif
53#ifndef _CPU_SEGMENTS_H_
54#include <machine/segments.h>
55#endif
56
57/*
58 * definitions of cpu-dependent requirements
59 * referenced in generic code
60 */
61
62#define cpu_exec(p) /* nothing */
63#define cpu_swapin(p) /* nothing */
64#define cpu_setstack(lp, ap) ((lp)->lwp_md.md_regs[SP] = (ap))
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)
46d4e165 68#define CLKF_PC(framep) ((framep)->if_rip)
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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 *
74 * We do not have to use a locked bus cycle but we do have to use an
75 * atomic instruction because an interrupt on the local cpu can modify
76 * the gd_reqflags field.
77 */
46d4e165 78#define need_lwkt_resched() \
b12defdc 79 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
46d4e165 80#define need_user_resched() \
2a418930 81 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
46d4e165 82#define need_proftick() \
2a418930 83 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC)
46d4e165 84#define need_ipiq() \
2a418930 85 atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ)
46d4e165 86#define signotify() \
2a418930 87 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL)
46d4e165 88#define sigupcall() \
2a418930 89 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_UPCALL)
46d4e165 90#define clear_user_resched() \
2a418930 91 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
46d4e165 92#define clear_lwkt_resched() \
2a418930 93 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
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94#define clear_quickret() \
95 atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET)
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96#define user_resched_wanted() \
97 (mycpu->gd_reqflags & RQF_AST_USER_RESCHED)
98#define lwkt_resched_wanted() \
99 (mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED)
100#define any_resched_wanted() \
101 (mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED|RQF_AST_USER_RESCHED))
d7f50089 102
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103/*
104 * CTL_MACHDEP definitions.
105 */
106#define CPU_CONSDEV 1 /* cdev_t: console terminal device */
107#define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */
108#define CPU_DISRTCSET 3 /* int: disable resettodr() call */
109#define CPU_BOOTINFO 4 /* struct: bootinfo */
110#define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */
111#define CPU_MAXID 6 /* number of valid machdep ids */
112
113#define CTL_MACHDEP_NAMES { \
114 { 0, 0 }, \
115 { "console_device", CTLTYPE_STRUCT }, \
116 { "adjkerntz", CTLTYPE_INT }, \
117 { "disable_rtc_set", CTLTYPE_INT }, \
118 { "bootinfo", CTLTYPE_STRUCT }, \
119 { "wall_cmos_clock", CTLTYPE_INT }, \
120}
121
d7f50089 122#ifdef _KERNEL
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123
124struct lwp;
125
126extern char btext[];
127extern char etext[];
128
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129void fork_trampoline (void);
130void generic_lwp_return (struct lwp *, struct trapframe *);
131void fork_return (struct lwp *, struct trapframe *);
46d4e165 132
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133#endif
134
fc3f9779 135#endif /* !_CPU_CPU_H_ */