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 1.6 2004/10/26 04:33:11 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_SPECIAL 0x0004 /* special vm_map_entry zone, see zget() */ 25 #define ZONE_BOOT 0x0010 /* Internal flag used by zbootinit */ 26 #define ZONE_USE_RESERVE 0x0020 /* use reserve memory if necessary */ 27 28 #ifndef _SYS_THREAD_H_ 29 #include <sys/thread.h> 30 #endif 31 32 #include <machine/lock.h> 33 34 typedef struct vm_zone { 35 struct lwkt_token zlock; /* lock for data structure */ 36 void *zitems; /* linked list of items */ 37 int zfreecnt; /* free entries */ 38 int zfreemin; /* minimum number of free entries */ 39 int znalloc; /* number of allocations */ 40 vm_offset_t zkva; /* Base kva of zone */ 41 int zpagecount; /* Total # of allocated pages */ 42 int zpagemax; /* Max address space */ 43 int zmax; /* Max number of entries allocated */ 44 int ztotal; /* Total entries allocated now */ 45 int zsize; /* size of each entry */ 46 int zalloc; /* hint for # of pages to alloc */ 47 int zflags; /* flags for zone */ 48 int zallocflag; /* flag for allocation */ 49 struct vm_object *zobj; /* object to hold zone */ 50 char *zname; /* name for diags */ 51 struct vm_zone *znext; /* list of zones for sysctl */ 52 } *vm_zone_t; 53 54 55 void zerror (int) __dead2; 56 vm_zone_t zinit (char *name, int size, int nentries, int flags, 57 int zalloc); 58 int zinitna (vm_zone_t z, struct vm_object *obj, char *name, 59 int size, int nentries, int flags, int zalloc); 60 void * zalloc (vm_zone_t z); 61 void zfree (vm_zone_t z, void *item); 62 void zbootinit (vm_zone_t z, char *name, int size, void *item, 63 int nitems); 64 65 #endif /* _SYS_ZONE_H */ 66