uma_machdep.c revision 287945 
1/*-
2 * Copyright (c) 2003 The FreeBSD Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/10/sys/ia64/ia64/uma_machdep.c 287945 2015-09-17 23:31:44Z rstone $");
29
30#include <sys/param.h>
31#include <sys/lock.h>
32#include <sys/malloc.h>
33#include <sys/mutex.h>
34#include <sys/systm.h>
35#include <vm/vm.h>
36#include <vm/vm_page.h>
37#include <vm/vm_pageout.h>
38#include <vm/uma.h>
39#include <vm/uma_int.h>
40#include <machine/vmparam.h>
41
42void *
43uma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait)
44{
45	void *va;
46	vm_page_t m;
47	int pflags;
48
49	*flags = UMA_SLAB_PRIV;
50	pflags = malloc2vm_flags(wait) | VM_ALLOC_WIRED;
51
52	for (;;) {
53		m = vm_page_alloc(NULL, 0, pflags | VM_ALLOC_NOOBJ);
54		if (m == NULL) {
55			if (wait & M_NOWAIT)
56				return (NULL);
57			VM_WAIT;
58		} else
59			break;
60	}
61
62	va = (void *)IA64_PHYS_TO_RR7(VM_PAGE_TO_PHYS(m));
63	if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
64		bzero(va, PAGE_SIZE);
65	return (va);
66}
67
68void
69uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
70{
71	vm_page_t m;
72
73	m = PHYS_TO_VM_PAGE(IA64_RR_MASK((u_int64_t)mem));
74	m->wire_count--;
75	vm_page_free(m);
76	atomic_subtract_int(&cnt.v_wire_count, 1);
77}
78