92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
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#ifndef GLO_H
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#define GLO_H
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/* Global variables used in the kernel. This file contains the declarations;
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* storage space for the variables is allocated in table.c, because EXTERN is
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* defined as extern unless the _TABLE definition is seen. We rely on the
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* compiler's default initialization (0) for several global variables.
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*/
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#ifdef _TABLE
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#undef EXTERN
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#define EXTERN
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#endif
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#include <minix/config.h>
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#include <minix/ipcconst.h>
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#include <machine/archtypes.h>
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#include "archconst.h"
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#include "config.h"
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#include "debug.h"
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/* Kernel information structures. This groups vital kernel information. */
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extern struct kinfo kinfo; /* kernel information for users */
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extern struct machine machine; /* machine information for users */
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extern struct kmessages kmessages; /* diagnostic messages in kernel */
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extern struct loadinfo loadinfo; /* status of load average */
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extern struct minix_kerninfo minix_kerninfo;
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EXTERN struct k_randomness krandom; /* gather kernel random information */
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EXTERN vir_bytes minix_kerninfo_user;
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#define kmess kmessages
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#define kloadinfo loadinfo
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/* Process scheduling information and the kernel reentry count. */
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EXTERN struct proc *vmrequest; /* first process on vmrequest queue */
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EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */
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EXTERN char *ipc_call_names[IPCNO_HIGHEST+1]; /* human-readable call names */
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EXTERN struct proc *kbill_kcall; /* process that made kernel call */
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EXTERN struct proc *kbill_ipc; /* process that invoked ipc */
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/* Interrupt related variables. */
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EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */
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EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */
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EXTERN int irq_use; /* map of all in-use irq's */
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EXTERN u32_t system_hz; /* HZ value */
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/* Miscellaneous. */
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EXTERN time_t boottime;
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EXTERN int verboseboot; /* verbose boot, init'ed in cstart */
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#if DEBUG_TRACE
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EXTERN int verboseflags;
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#endif
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#ifdef USE_APIC
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EXTERN int config_no_apic; /* optionally turn off apic */
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EXTERN int config_apic_timer_x; /* apic timer slowdown factor */
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#endif
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EXTERN u64_t cpu_hz[CONFIG_MAX_CPUS];
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#define cpu_set_freq(cpu, freq) do {cpu_hz[cpu] = freq;} while (0)
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#define cpu_get_freq(cpu) cpu_hz[cpu]
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#ifdef CONFIG_SMP
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EXTERN int config_no_smp; /* optionally turn off SMP */
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#endif
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/* VM */
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EXTERN int vm_running;
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EXTERN int catch_pagefaults;
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EXTERN int kernel_may_alloc;
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/* Variables that are initialized elsewhere are just extern here. */
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extern struct boot_image image[NR_BOOT_PROCS]; /* system image processes */
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EXTERN volatile int serial_debug_active;
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EXTERN struct cpu_info cpu_info[CONFIG_MAX_CPUS];
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/* BKL stats */
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EXTERN u64_t kernel_ticks[CONFIG_MAX_CPUS];
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EXTERN u64_t bkl_ticks[CONFIG_MAX_CPUS];
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EXTERN unsigned bkl_tries[CONFIG_MAX_CPUS];
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EXTERN unsigned bkl_succ[CONFIG_MAX_CPUS];
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/* Feature flags */
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EXTERN int minix_feature_flags;
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#endif /* GLO_H */
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