843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER START
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843e19887f64dde75055cf8842fc4db2171eff45johnlev * Common Development and Distribution License (the "License").
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You may not use this file except in compliance with the License.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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843e19887f64dde75055cf8842fc4db2171eff45johnlev * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER END
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Use is subject to license terms.
843e19887f64dde75055cf8842fc4db2171eff45johnlev#pragma ident "%Z%%M% %I% %E% SMI"
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/xen_mmu.h> /* to get typedef of mfn_t */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern "C" {
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This file contains interfaces for both the balloon kernel thread
843e19887f64dde75055cf8842fc4db2171eff45johnlev * and the balloon driver. The balloon device is installed under /dev/xen,
843e19887f64dde75055cf8842fc4db2171eff45johnlev * and can be used with the ioctl values in balloon.h to get the balloon
843e19887f64dde75055cf8842fc4db2171eff45johnlev * memory status.
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* balloon thread declarations */
843e19887f64dde75055cf8842fc4db2171eff45johnlevlong balloon_free_pages(uint_t, mfn_t *, caddr_t, pfn_t *);
843e19887f64dde75055cf8842fc4db2171eff45johnlevlong balloon_replace_pages(uint_t, page_t **, uint_t, uint_t, mfn_t *);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* balloon driver information */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Critical stats for the balloon thread. All values are in pages.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct {
843e19887f64dde75055cf8842fc4db2171eff45johnlev pgcnt_t bln_current_pages; /* current reservation */
843e19887f64dde75055cf8842fc4db2171eff45johnlev pgcnt_t bln_new_target; /* target value for reservation */
843e19887f64dde75055cf8842fc4db2171eff45johnlev pgcnt_t bln_max_pages; /* first pfn for which we don't have a page_t */
843e19887f64dde75055cf8842fc4db2171eff45johnlev pgcnt_t bln_low; /* lowest value of reservation since boot */
843e19887f64dde75055cf8842fc4db2171eff45johnlev pgcnt_t bln_high; /* highest value of reservation since boot */
843e19887f64dde75055cf8842fc4db2171eff45johnlev spgcnt_t bln_hv_pages; /* number of total pages given to hypervisor */
843e19887f64dde75055cf8842fc4db2171eff45johnlev spgcnt_t bln_hard_limit; /* domain's max-mem limit */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif /* _SYS_BALLOON_IMPL_H */