2 * Copyright (c) 1997, 1998 John S. Dyson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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 $
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 */
28 #ifndef _SYS_THREAD_H_
29 #include <sys/thread.h>
32 #include <machine/lock.h>
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 */
55 void zerror (int) __dead2;
56 vm_zone_t zinit (char *name, int size, int nentries, int flags,
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,
65 #endif /* _SYS_ZONE_H */