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uma_dbg.c (187681) uma_dbg.c (249313)
1/*-
2 * Copyright (c) 2002, 2003, 2004, 2005 Jeffrey Roberson <jeff@FreeBSD.org>
3 * Copyright (c) 2004, 2005 Bosko Milekic <bmilekic@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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26 */
27
28/*
29 * uma_dbg.c Debugging features for UMA users
30 *
31 */
32
33#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2002, 2003, 2004, 2005 Jeffrey Roberson <jeff@FreeBSD.org>
3 * Copyright (c) 2004, 2005 Bosko Milekic <bmilekic@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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26 */
27
28/*
29 * uma_dbg.c Debugging features for UMA users
30 *
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/vm/uma_dbg.c 187681 2009-01-25 09:11:24Z jeff $");
34__FBSDID("$FreeBSD: head/sys/vm/uma_dbg.c 249313 2013-04-09 17:43:48Z glebius $");
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/vm.h>
46#include <vm/vm_object.h>
47#include <vm/vm_page.h>
48#include <vm/uma.h>
49#include <vm/uma_int.h>
50#include <vm/uma_dbg.h>
51
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/vm.h>
46#include <vm/vm_object.h>
47#include <vm/vm_page.h>
48#include <vm/uma.h>
49#include <vm/uma_int.h>
50#include <vm/uma_dbg.h>
51
52static const u_int32_t uma_junk = 0xdeadc0de;
52static const uint32_t uma_junk = 0xdeadc0de;
53
54/*
55 * Checks an item to make sure it hasn't been overwritten since it was freed,
56 * prior to subsequent reallocation.
57 *
58 * Complies with standard ctor arg/return
59 *
60 */
61int
62trash_ctor(void *mem, int size, void *arg, int flags)
63{
64 int cnt;
53
54/*
55 * Checks an item to make sure it hasn't been overwritten since it was freed,
56 * prior to subsequent reallocation.
57 *
58 * Complies with standard ctor arg/return
59 *
60 */
61int
62trash_ctor(void *mem, int size, void *arg, int flags)
63{
64 int cnt;
65 u_int32_t *p;
65 uint32_t *p;
66
67 cnt = size / sizeof(uma_junk);
68
69 for (p = mem; cnt > 0; cnt--, p++)
70 if (*p != uma_junk) {
71 printf("Memory modified after free %p(%d) val=%x @ %p\n",
72 mem, size, *p, p);
73 return (0);

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80 *
81 * Complies with standard dtor arg/return
82 *
83 */
84void
85trash_dtor(void *mem, int size, void *arg)
86{
87 int cnt;
66
67 cnt = size / sizeof(uma_junk);
68
69 for (p = mem; cnt > 0; cnt--, p++)
70 if (*p != uma_junk) {
71 printf("Memory modified after free %p(%d) val=%x @ %p\n",
72 mem, size, *p, p);
73 return (0);

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80 *
81 * Complies with standard dtor arg/return
82 *
83 */
84void
85trash_dtor(void *mem, int size, void *arg)
86{
87 int cnt;
88 u_int32_t *p;
88 uint32_t *p;
89
90 cnt = size / sizeof(uma_junk);
91
92 for (p = mem; cnt > 0; cnt--, p++)
93 *p = uma_junk;
94}
95
96/*

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117{
118 (void)trash_ctor(mem, size, NULL, 0);
119}
120
121int
122mtrash_ctor(void *mem, int size, void *arg, int flags)
123{
124 struct malloc_type **ksp;
89
90 cnt = size / sizeof(uma_junk);
91
92 for (p = mem; cnt > 0; cnt--, p++)
93 *p = uma_junk;
94}
95
96/*

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117{
118 (void)trash_ctor(mem, size, NULL, 0);
119}
120
121int
122mtrash_ctor(void *mem, int size, void *arg, int flags)
123{
124 struct malloc_type **ksp;
125 u_int32_t *p = mem;
125 uint32_t *p = mem;
126 int cnt;
127
128 size -= sizeof(struct malloc_type *);
129 ksp = (struct malloc_type **)mem;
130 ksp += size / sizeof(struct malloc_type *);
131 cnt = size / sizeof(uma_junk);
132
133 for (p = mem; cnt > 0; cnt--, p++)

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145 *
146 * Complies with standard dtor arg/return
147 *
148 */
149void
150mtrash_dtor(void *mem, int size, void *arg)
151{
152 int cnt;
126 int cnt;
127
128 size -= sizeof(struct malloc_type *);
129 ksp = (struct malloc_type **)mem;
130 ksp += size / sizeof(struct malloc_type *);
131 cnt = size / sizeof(uma_junk);
132
133 for (p = mem; cnt > 0; cnt--, p++)

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145 *
146 * Complies with standard dtor arg/return
147 *
148 */
149void
150mtrash_dtor(void *mem, int size, void *arg)
151{
152 int cnt;
153 u_int32_t *p;
153 uint32_t *p;
154
155 size -= sizeof(struct malloc_type *);
156 cnt = size / sizeof(uma_junk);
157
158 for (p = mem; cnt > 0; cnt--, p++)
159 *p = uma_junk;
160}
161

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191 (void)mtrash_ctor(mem, size, NULL, 0);
192}
193
194static uma_slab_t
195uma_dbg_getslab(uma_zone_t zone, void *item)
196{
197 uma_slab_t slab;
198 uma_keg_t keg;
154
155 size -= sizeof(struct malloc_type *);
156 cnt = size / sizeof(uma_junk);
157
158 for (p = mem; cnt > 0; cnt--, p++)
159 *p = uma_junk;
160}
161

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191 (void)mtrash_ctor(mem, size, NULL, 0);
192}
193
194static uma_slab_t
195uma_dbg_getslab(uma_zone_t zone, void *item)
196{
197 uma_slab_t slab;
198 uma_keg_t keg;
199 u_int8_t *mem;
199 uint8_t *mem;
200
200
201 mem = (u_int8_t *)((unsigned long)item & (~UMA_SLAB_MASK));
201 mem = (uint8_t *)((unsigned long)item & (~UMA_SLAB_MASK));
202 if (zone->uz_flags & UMA_ZONE_VTOSLAB) {
203 slab = vtoslab((vm_offset_t)mem);
204 } else {
205 keg = LIST_FIRST(&zone->uz_kegs)->kl_keg;
206 if (keg->uk_flags & UMA_ZONE_HASH)
207 slab = hash_sfind(&keg->uk_hash, mem);
208 else
209 slab = (uma_slab_t)(mem + keg->uk_pgoff);

--- 104 unchanged lines hidden --- 		202 if (zone->uz_flags & UMA_ZONE_VTOSLAB) {
203 slab = vtoslab((vm_offset_t)mem);
204 } else {
205 keg = LIST_FIRST(&zone->uz_kegs)->kl_keg;
206 if (keg->uk_flags & UMA_ZONE_HASH)
207 slab = hash_sfind(&keg->uk_hash, mem);
208 else
209 slab = (uma_slab_t)(mem + keg->uk_pgoff);

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