1/*
2 * Copyright (c) 2002, Jeffrey Roberson <jroberson@chesapeake.net>
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 * 1. Redistributions of source code must retain the above copyright

--- 9 unchanged lines hidden (view full) ---

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 * $FreeBSD: head/sys/vm/uma_dbg.c 99424 2002-07-05 05:16:19Z jeff $
27 *
28 */
29
30/*
31 * uma_dbg.c Debugging features for UMA users
32 *
33 */
34
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/kernel.h>
39#include <sys/types.h>
40#include <sys/queue.h>
41#include <sys/lock.h>
42#include <sys/mutex.h>
43#include <sys/malloc.h>
44
45#include <vm/uma.h>
46#include <vm/uma_int.h>
47#include <vm/uma_dbg.h>
48
49static const u_int32_t uma_junk = 0xdeadc0de;
50
51/*
52 * Checks an item to make sure it hasn't been overwritten since freed.

--- 136 unchanged lines hidden (view full) ---

189static uma_slab_t
190uma_dbg_getslab(uma_zone_t zone, void *item)
191{
192 uma_slab_t slab;
193 u_int8_t *mem;
194
195 mem = (u_int8_t *)((unsigned long)item & (~UMA_SLAB_MASK));
196 if (zone->uz_flags & UMA_ZFLAG_MALLOC) {
197 mtx_lock(&malloc_mtx);
198 slab = hash_sfind(mallochash, mem);
199 mtx_unlock(&malloc_mtx);
200 } else if (zone->uz_flags & UMA_ZFLAG_OFFPAGE) {
201 ZONE_LOCK(zone);
202 slab = hash_sfind(&zone->uz_hash, mem);
203 ZONE_UNLOCK(zone);
204 } else {
205 mem += zone->uz_pgoff;
206 slab = (uma_slab_t)mem;
207 }
208

--- 74 unchanged lines hidden ---