mem_cage.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MEM_CAGE_H
#define _SYS_MEM_CAGE_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Memory caging interfaces.
*/
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
#define KCT_FAILURE 0
#define KCT_CRIT 1
#define KCT_NONCRIT 2
extern int kernel_cage_enable;
extern int kcage_on;
extern kthread_id_t kcage_cageout_thread;
extern pgcnt_t kcage_freemem;
extern pgcnt_t kcage_needfree;
extern pgcnt_t kcage_lotsfree;
extern pgcnt_t kcage_desfree;
extern pgcnt_t kcage_minfree;
extern pgcnt_t kcage_throttlefree;
extern void kcage_freemem_add(pgcnt_t);
extern void kcage_freemem_sub(pgcnt_t);
extern int kcage_create_throttle(pgcnt_t, int);
/* Third arg controls direction of growth: 0: increasing pfns, 1: decreasing. */
extern int kcage_range_trylock(void);
extern void kcage_range_lock(void);
extern void kcage_range_unlock(void);
extern int kcage_current_pfn(pfn_t *);
extern int kcage_range_islocked(void);
extern int kcage_range_init(struct memlist *, int);
extern void kcage_init(pgcnt_t);
extern void kcage_recalc_thresholds(void);
/* Called from vm_pageout.c */
extern void kcage_cageout_init(void);
extern void kcage_cageout_wakeup(void);
/* Called from clock thread in clock.c */
extern void kcage_tick(void);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MEM_CAGE_H */