2 * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/mutex.h>
33 #include <sys/systm.h>
35 #include <vm/vm_page.h>
36 #include <vm/vm_pageout.h>
38 #include <vm/uma_int.h>
39 #include <machine/md_var.h>
40 #include <machine/vmparam.h>
43 uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
50 *flags = UMA_SLAB_PRIV;
51 if ((wait & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
52 pflags = VM_ALLOC_INTERRUPT | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED;
54 pflags = VM_ALLOC_SYSTEM | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED;
56 pflags |= VM_ALLOC_ZERO;
58 m = vm_page_alloc(NULL, 0, pflags);
68 if ((wait & M_NODUMP) == 0)
70 va = (void *)PHYS_TO_DMAP(pa);
71 if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
77 uma_small_free(void *mem, int size, u_int8_t flags)
82 pa = DMAP_TO_PHYS((vm_offset_t)mem);
84 m = PHYS_TO_VM_PAGE(pa);
87 atomic_subtract_int(&cnt.v_wire_count, 1);