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- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)vmsystm.h 7.1 (Berkeley) 6/4/86
- */
-
- /*
- * Miscellaneous virtual memory subsystem variables and structures.
- */
-
- #ifdef KERNEL
- int freemem; /* remaining blocks of free memory */
- int avefree; /* moving average of remaining free blocks */
- int avefree30; /* 30 sec (avefree is 5 sec) moving average */
- int deficit; /* estimate of needs of new swapped in procs */
- int nscan; /* number of scans in last second */
- int multprog; /* current multiprogramming degree */
- int desscan; /* desired pages scanned per second */
-
- /* writable copies of tunables */
- int maxpgio; /* max paging i/o per sec before start swaps */
- int maxslp; /* max sleep time before very swappable */
- int lotsfree; /* max free before clock freezes */
- int minfree; /* minimum free pages before swapping begins */
- int desfree; /* no of pages to try to keep free via daemon */
- int saferss; /* no pages not to steal; decays with slptime */
- int slowscan; /* slowest scan rate, clusters/second */
- int fastscan; /* fastest scan rate, clusters/second */
- #endif
-
- /*
- * Fork/vfork accounting.
- */
- struct forkstat
- {
- int cntfork;
- int cntvfork;
- int sizfork;
- int sizvfork;
- };
- #ifdef KERNEL
- struct forkstat forkstat;
- #endif
-
- /*
- * Swap kind accounting.
- */
- struct swptstat
- {
- int pteasy; /* easy pt swaps */
- int ptexpand; /* pt expansion swaps */
- int ptshrink; /* pt shrinking swaps */
- int ptpack; /* pt swaps involving spte copying */
- };
- #ifdef KERNEL
- struct swptstat swptstat;
- #endif
-