BSD 4_4_Lite2 release

[unix-history] / usr / src / sys / vm / vm_param.h

diff --git a/usr/src/sys/vm/vm_param.h b/usr/src/sys/vm/vm_param.h
index cea357d..81d3d12 100644 (file)
--- a/usr/src/sys/vm/vm_param.h
+++ b/usr/src/sys/vm/vm_param.h
@@ -1,16 +1,65 @@
 /* 
 /* 

- * Copyright (c) 1985, Avadis Tevanian, Jr., Michael Wayne Young
- * Copyright (c) 1987 Carnegie-Mellon University
- * Copyright (c) 1991 Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1991, 1993
+ *     The Regents of the University of California.  All rights reserved.

  *
  * This code is derived from software contributed to Berkeley by
  * The Mach Operating System project at Carnegie-Mellon University.
  *
  *
  * This code is derived from software contributed to Berkeley by
  * The Mach Operating System project at Carnegie-Mellon University.
  *

- * The CMU software License Agreement specifies the terms and conditions
- * for use and redistribution.
+ * 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, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)vm_param.h  8.2 (Berkeley) 1/9/95
+ *
+ *
+ * Copyright (c) 1987, 1990 Carnegie-Mellon University.
+ * All rights reserved.

  *
  *

- *     @(#)vm_param.h  7.1 (Berkeley) %G%
+ * Authors: Avadis Tevanian, Jr., Michael Wayne Young
+ * 
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.

  */
 
 /*
  */
 
 /*


@@ -20,11 +69,7 @@
 #ifndef        _VM_PARAM_
 #define        _VM_PARAM_
 
 #ifndef        _VM_PARAM_
 #define        _VM_PARAM_
 

-#ifdef KERNEL
-#include "machine/vmparam.h"
-#else

 #include <machine/vmparam.h>
 #include <machine/vmparam.h>

-#endif

 
 /*
  * This belongs in types.h, but breaks too many existing programs.
 
 /*
  * This belongs in types.h, but breaks too many existing programs.


@@ -37,15 +82,33 @@ typedef int boolean_t;
  *     The machine independent pages are refered to as PAGES.  A page
  *     is some number of hardware pages, depending on the target machine.
  */
  *     The machine independent pages are refered to as PAGES.  A page
  *     is some number of hardware pages, depending on the target machine.
  */

+#define        DEFAULT_PAGE_SIZE       4096

 
 /*
  *     All references to the size of a page should be done with PAGE_SIZE
  *     or PAGE_SHIFT.  The fact they are variables is hidden here so that
  *     we can easily make them constant if we so desire.
  */
 
 /*
  *     All references to the size of a page should be done with PAGE_SIZE
  *     or PAGE_SHIFT.  The fact they are variables is hidden here so that
  *     we can easily make them constant if we so desire.
  */

+#define        PAGE_SIZE       cnt.v_page_size         /* size of page */
+#define        PAGE_MASK       page_mask               /* size of page - 1 */
+#define        PAGE_SHIFT      page_shift              /* bits to shift for pages */
+#ifdef KERNEL
+extern vm_size_t       page_mask;
+extern int             page_shift;
+#endif
+
+/*
+ * CTL_VM identifiers
+ */
+#define        VM_METER        1               /* struct vmmeter */
+#define        VM_LOADAVG      2               /* struct loadavg */
+#define        VM_MAXID        3               /* number of valid vm ids */

 
 

-#define        PAGE_SIZE       page_size       /* size of page in addressible units */
-#define PAGE_SHIFT     page_shift      /* number of bits to shift for pages */
+#define        CTL_VM_NAMES { \
+       { 0, 0 }, \
+       { "vmmeter", CTLTYPE_STRUCT }, \
+       { "loadavg", CTLTYPE_STRUCT }, \
+}

 
 /* 
  *     Return values from the VM routines.
 
 /* 
  *     Return values from the VM routines.


@@ -60,43 +123,38 @@ typedef int        boolean_t;
 #define        KERN_NOT_RECEIVER       7
 #define        KERN_NO_ACCESS          8
 
 #define        KERN_NOT_RECEIVER       7
 #define        KERN_NO_ACCESS          8
 

-#ifdef ASSEMBLER
-#else  ASSEMBLER
+#ifndef ASSEMBLER

 /*
  *     Convert addresses to pages and vice versa.
  *     No rounding is used.
  */
 /*
  *     Convert addresses to pages and vice versa.
  *     No rounding is used.
  */

-
-#ifdef KERNEL
-#define        atop(x)         (((unsigned)(x)) >> page_shift)
-#define        ptoa(x)         ((vm_offset_t)((x) << page_shift))
-#endif KERNEL
+#ifdef KERNEL
+#define        atop(x)         (((unsigned long)(x)) >> PAGE_SHIFT)
+#define        ptoa(x)         ((vm_offset_t)((x) << PAGE_SHIFT))

 
 /*
 
 /*

- *     Round off or truncate to the nearest page.  These will work
- *     for either addresses or counts.  (i.e. 1 byte rounds to 1 page
- *     bytes.
+ * Round off or truncate to the nearest page.  These will work
+ * for either addresses or counts (i.e., 1 byte rounds to 1 page).

  */
  */

-
-#ifdef KERNEL
-#define round_page(x)  ((vm_offset_t)((((vm_offset_t)(x)) + page_mask) & ~page_mask))
-#define trunc_page(x)  ((vm_offset_t)(((vm_offset_t)(x)) & ~page_mask))
-#else  KERNEL
-#define        round_page(x)   ((((vm_offset_t)(x) + (vm_page_size - 1)) / vm_page_size) * vm_page_size)
-#define        trunc_page(x)   ((((vm_offset_t)(x)) / vm_page_size) * vm_page_size)
-#endif KERNEL
-
-#ifdef KERNEL
-extern vm_size_t       page_size;      /* machine independent page size */
-extern vm_size_t       page_mask;      /* page_size - 1; mask for
-                                                  offset within page */
-extern int             page_shift;     /* shift to use for page size */
+#define        round_page(x) \
+       ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) & ~PAGE_MASK))
+#define        trunc_page(x) \
+       ((vm_offset_t)(((vm_offset_t)(x)) & ~PAGE_MASK))
+#define        num_pages(x) \
+       ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))

 
 extern vm_size_t       mem_size;       /* size of physical memory (bytes) */
 extern vm_offset_t     first_addr;     /* first physical page */
 extern vm_offset_t     last_addr;      /* last physical page */
 
 extern vm_size_t       mem_size;       /* size of physical memory (bytes) */
 extern vm_offset_t     first_addr;     /* first physical page */
 extern vm_offset_t     last_addr;      /* last physical page */

-#endif KERNEL

 
 

-#endif ASSEMBLER
-
-#endif _VM_PARAM_
+#else
+/* out-of-kernel versions of round_page and trunc_page */
+#define        round_page(x) \
+       ((((vm_offset_t)(x) + (vm_page_size - 1)) / vm_page_size) * \
+           vm_page_size)
+#define        trunc_page(x) \
+       ((((vm_offset_t)(x)) / vm_page_size) * vm_page_size)
+
+#endif /* KERNEL */
+#endif /* ASSEMBLER */
+#endif /* _VM_PARAM_ */