Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/kernel/glo.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
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1 #ifndef GLO_H 2 #define GLO_H 3 4 /* Global variables used in the kernel. This file contains the declarations; 5 * storage space for the variables is allocated in table.c, because EXTERN is 6 * defined as extern unless the _TABLE definition is seen. We rely on the 7 * compiler's default initialization (0) for several global variables. 8 */ 9 #ifdef _TABLE 10 #undef EXTERN 11 #define EXTERN 12 #endif 13 14 #include <minix/config.h> 15 #include "config.h" 16 17 /* Variables relating to shutting down MINIX. */ 18 EXTERN char kernel_exception; /* TRUE after system exceptions */ 19 EXTERN char shutdown_started; /* TRUE after shutdowns / reboots */ 20 21 /* Kernel information structures. This groups vital kernel information. */ 22 EXTERN phys_bytes aout; /* address of a.out headers */ 23 EXTERN struct kinfo kinfo; /* kernel information for users */ 24 EXTERN struct machine machine; /* machine information for users */ 25 EXTERN struct kmessages kmess; /* diagnostic messages in kernel */ 26 EXTERN struct randomness krandom; /* gather kernel random information */ 27 28 /* Process scheduling information and the kernel reentry count. */ 29 EXTERN struct proc *prev_ptr; /* previously running process */ 30 EXTERN struct proc *proc_ptr; /* pointer to currently running process */ 31 EXTERN struct proc *next_ptr; /* next process to run after restart() */ 32 EXTERN struct proc *bill_ptr; /* process to bill for clock ticks */ 33 EXTERN char k_reenter; /* kernel reentry count (entry count less 1) */ 34 EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */ 35 36 #if (CHIP == INTEL) 37 38 /* Interrupt related variables. */ 39 EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */ 40 EXTERN irq_hook_t *irq_handlers[NR_IRQ_VECTORS];/* list of IRQ handlers */ 41 EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */ 42 EXTERN int irq_use; /* map of all in-use irq's */ 43 44 /* Miscellaneous. */ 45 EXTERN reg_t mon_ss, mon_sp; /* boot monitor stack */ 46 EXTERN int mon_return; /* true if we can return to monitor */ 47 EXTERN int do_serial_debug; 48 49 /* Variables that are initialized elsewhere are just extern here. */ 50 extern struct boot_image image[]; /* system image processes */ 51 extern char *t_stack[]; /* task stack space */ 52 extern struct segdesc_s gdt[]; /* global descriptor table */ 53 54 EXTERN _PROTOTYPE( void (*level0_func), (void) ); 55 #endif /* (CHIP == INTEL) */ 56 57 #if (CHIP == M68000) 58 /* M68000 specific variables go here. */ 59 #endif 60 61 #endif /* GLO_H */
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