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/*
* Copyright (c) 1997, 1998 John S. Dyson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Absolutely no warranty of function or purpose is made by the author
* John S. Dyson.
*
* $FreeBSD$
*/
#ifndef _SYS_ZONE_H
#define _SYS_ZONE_H
#define ZONE_INTERRUPT 1 /* Use this if you need to allocate at int time */
#define ZONE_BOOT 16 /* This is an internal flag used by zbootinit */
#include <sys/_lock.h>
#include <sys/_mutex.h>
typedef struct vm_zone {
struct mtx zmtx; /* lock for data structure */
void *zitems; /* linked list of items */
int zfreecnt; /* free entries */
int zfreemin; /* minimum number of free entries */
int znalloc; /* number of allocations */
vm_offset_t zkva; /* Base kva of zone */
int zpagecount; /* Total # of allocated pages */
int zpagemax; /* Max address space */
int zmax; /* Max number of entries allocated */
int ztotal; /* Total entries allocated now */
int zsize; /* size of each entry */
int zalloc; /* hint for # of pages to alloc */
int zflags; /* flags for zone */
int zallocflag; /* flag for allocation */
struct vm_object *zobj; /* object to hold zone */
char *zname; /* name for diags */
/* NOTE: zent is protected by the subsystem lock, *not* by zmtx */
SLIST_ENTRY(vm_zone) zent; /* singly-linked list of zones */
} *vm_zone_t;
void vm_zone_init(void);
void vm_zone_init2(void);
int zinitna(vm_zone_t z, struct vm_object *obj, char *name,
int size, int nentries, int flags, int zalloc);
vm_zone_t zinit(char *name, int size, int nentries,
int flags, int zalloc);
void zbootinit(vm_zone_t z, char *name, int size,
void *item, int nitems);
void zdestroy(vm_zone_t z);
void *zalloc(vm_zone_t z);
void zfree(vm_zone_t z, void *item);
#endif /* _SYS_ZONE_H */
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