1 /* 2 * Copyright (c) 1997, 1998 John S. Dyson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. Absolutely no warranty of function or purpose is made by the author 12 * John S. Dyson. 13 * 14 * $FreeBSD: src/sys/vm/vm_zone.h,v 1.13.2.2 2002/10/10 19:50:16 dillon Exp $ 15 * $DragonFly: src/sys/vm/vm_zone.h,v 1.3 2003/07/06 21:23:56 dillon Exp $ 16 */ 17 18 #ifndef _SYS_ZONE_H 19 20 #define _SYS_ZONE_H 21 22 #define ZONE_INTERRUPT 0x0001 /* If you need to allocate at int time */ 23 #define ZONE_PANICFAIL 0x0002 /* panic if the zalloc fails */ 24 #define ZONE_BOOT 0x0010 /* Internal flag used by zbootinit */ 25 26 #ifndef _SYS_THREAD_H_ 27 #include <sys/thread.h> 28 #endif 29 30 #include <machine/lock.h> 31 32 typedef struct vm_zone { 33 struct lwkt_token zlock; /* lock for data structure */ 34 void *zitems; /* linked list of items */ 35 int zfreecnt; /* free entries */ 36 int zfreemin; /* minimum number of free entries */ 37 int znalloc; /* number of allocations */ 38 vm_offset_t zkva; /* Base kva of zone */ 39 int zpagecount; /* Total # of allocated pages */ 40 int zpagemax; /* Max address space */ 41 int zmax; /* Max number of entries allocated */ 42 int ztotal; /* Total entries allocated now */ 43 int zsize; /* size of each entry */ 44 int zalloc; /* hint for # of pages to alloc */ 45 int zflags; /* flags for zone */ 46 int zallocflag; /* flag for allocation */ 47 struct vm_object *zobj; /* object to hold zone */ 48 char *zname; /* name for diags */ 49 struct vm_zone *znext; /* list of zones for sysctl */ 50 } *vm_zone_t; 51 52 53 void zerror __P((int)) __dead2; 54 vm_zone_t zinit __P((char *name, int size, int nentries, int flags, 55 int zalloc)); 56 int zinitna __P((vm_zone_t z, struct vm_object *obj, char *name, 57 int size, int nentries, int flags, int zalloc)); 58 void * zalloc __P((vm_zone_t z)); 59 void zfree __P((vm_zone_t z, void *item)); 60 void zbootinit __P((vm_zone_t z, char *name, int size, void *item, 61 int nitems)); 62 63 #endif /* _SYS_ZONE_H */ 64