Annotation of sys/uvm/uvm_user.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: uvm_user.c,v 1.11 2007/04/27 17:01:54 art Exp $ */
! 2: /* $NetBSD: uvm_user.c,v 1.8 2000/06/27 17:29:37 mrg Exp $ */
! 3:
! 4: /*
! 5: *
! 6: * Copyright (c) 1997 Charles D. Cranor and Washington University.
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed by Charles D. Cranor and
! 20: * Washington University.
! 21: * 4. The name of the author may not be used to endorse or promote products
! 22: * derived from this software without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 34: *
! 35: * from: Id: uvm_user.c,v 1.1.2.1 1997/08/14 19:10:41 chuck Exp
! 36: */
! 37:
! 38: /*
! 39: * uvm_user.c: high level uvm_allocate/uvm_deallocate interface into vm.
! 40: */
! 41:
! 42:
! 43: #include <sys/param.h>
! 44: #include <sys/systm.h>
! 45: #include <sys/proc.h>
! 46:
! 47: #include <uvm/uvm.h>
! 48:
! 49: /*
! 50: * uvm_deallocate: deallocate memory (unmap)
! 51: */
! 52:
! 53: void
! 54: uvm_deallocate(struct vm_map *map, vaddr_t start, vsize_t size)
! 55: {
! 56:
! 57: if (map == NULL)
! 58: panic("uvm_deallocate with null map");
! 59:
! 60: if (size == 0)
! 61: return;
! 62:
! 63: uvm_unmap(map, trunc_page(start), round_page(start+size));
! 64: }
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