blob: 938105d794362074031ce81073ed3e8666018423 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
#ifndef GLO_H
#define GLO_H
/* Global variables used in the kernel. This file contains the declarations;
* storage space for the variables is allocated in table.c, because EXTERN is
* defined as extern unless the _TABLE definition is seen. We rely on the
* compiler's default initialization (0) for several global variables.
*/
#ifdef _TABLE
#undef EXTERN
#define EXTERN
#endif
#include <minix/config.h>
#include <minix/ipcconst.h>
#include <machine/archtypes.h>
#include "archconst.h"
#include "config.h"
#include "debug.h"
/* Kernel information structures. This groups vital kernel information. */
extern struct kinfo kinfo; /* kernel information for services */
extern struct machine machine; /* machine info for services */
extern struct kmessages kmessages; /* diagnostic messages in kernel */
extern struct loadinfo loadinfo; /* status of load average */
extern struct kuserinfo kuserinfo; /* kernel information for users */
extern struct arm_frclock arm_frclock; /* ARM free-running timer info */
extern struct kclockinfo kclockinfo; /* clock information */
extern struct minix_kerninfo minix_kerninfo;
EXTERN struct k_randomness krandom; /* gather kernel random information */
EXTERN vir_bytes minix_kerninfo_user;
#define kmess kmessages
#define kloadinfo loadinfo
#define system_hz (kclockinfo.hz) /* HZ value (alias) */
/* Process scheduling information and the kernel reentry count. */
EXTERN struct proc *vmrequest; /* first process on vmrequest queue */
EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */
EXTERN char *ipc_call_names[IPCNO_HIGHEST+1]; /* human-readable call names */
EXTERN struct proc *kbill_kcall; /* process that made kernel call */
EXTERN struct proc *kbill_ipc; /* process that invoked ipc */
/* Interrupt related variables. */
EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */
EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */
EXTERN int irq_use; /* map of all in-use irq's */
/* Miscellaneous. */
EXTERN int verboseboot; /* verbose boot, init'ed in cstart */
#if DEBUG_TRACE
EXTERN int verboseflags;
#endif
#ifdef USE_APIC
EXTERN int config_no_apic; /* optionally turn off apic */
EXTERN int config_apic_timer_x; /* apic timer slowdown factor */
#endif
EXTERN u64_t cpu_hz[CONFIG_MAX_CPUS];
#define cpu_set_freq(cpu, freq) do {cpu_hz[cpu] = freq;} while (0)
#define cpu_get_freq(cpu) cpu_hz[cpu]
#ifdef CONFIG_SMP
EXTERN int config_no_smp; /* optionally turn off SMP */
#endif
/* VM */
EXTERN int vm_running;
EXTERN int catch_pagefaults;
EXTERN int kernel_may_alloc;
/* Variables that are initialized elsewhere are just extern here. */
extern struct boot_image image[NR_BOOT_PROCS]; /* system image processes */
EXTERN volatile int serial_debug_active;
EXTERN struct cpu_info cpu_info[CONFIG_MAX_CPUS];
/* BKL stats */
EXTERN u64_t kernel_ticks[CONFIG_MAX_CPUS];
EXTERN u64_t bkl_ticks[CONFIG_MAX_CPUS];
EXTERN unsigned bkl_tries[CONFIG_MAX_CPUS];
EXTERN unsigned bkl_succ[CONFIG_MAX_CPUS];
/* Feature flags */
EXTERN int minix_feature_flags;
#endif /* GLO_H */
|
