Commit | Line | Data |
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84b7e3cd MD |
1 | /* |
2 | * VMPAGEINFO.C | |
3 | * | |
4 | * cc -I/usr/src/sys vmpageinfo.c -o /usr/local/bin/vmpageinfo -lkvm | |
5 | * | |
6 | * vmpageinfo | |
7 | * | |
8 | * Validate the vm_page_buckets[] hash array against the vm_page_array | |
9 | * | |
10 | * | |
11 | * Copyright (c) 2004 The DragonFly Project. All rights reserved. | |
12 | * | |
13 | * This code is derived from software contributed to The DragonFly Project | |
14 | * by Matthew Dillon <dillon@backplane.com> | |
15 | * | |
16 | * Redistribution and use in source and binary forms, with or without | |
17 | * modification, are permitted provided that the following conditions | |
18 | * are met: | |
19 | * | |
20 | * 1. Redistributions of source code must retain the above copyright | |
21 | * notice, this list of conditions and the following disclaimer. | |
22 | * 2. Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in | |
24 | * the documentation and/or other materials provided with the | |
25 | * distribution. | |
26 | * 3. Neither the name of The DragonFly Project nor the names of its | |
27 | * contributors may be used to endorse or promote products derived | |
28 | * from this software without specific, prior written permission. | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
31 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
32 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
33 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
34 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
35 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
36 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
37 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
38 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
39 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
40 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
41 | * SUCH DAMAGE. | |
42 | * | |
e36e284d | 43 | * $DragonFly: src/test/debug/vmpageinfo.c,v 1.2 2006/05/23 01:00:05 dillon Exp $ |
84b7e3cd MD |
44 | */ |
45 | ||
46 | #define _KERNEL_STRUCTURES_ | |
47 | #include <sys/param.h> | |
48 | #include <sys/user.h> | |
49 | #include <sys/malloc.h> | |
50 | #include <sys/signalvar.h> | |
51 | #include <sys/vnode.h> | |
52 | #include <sys/namecache.h> | |
53 | ||
54 | #include <vm/vm.h> | |
55 | #include <vm/vm_page.h> | |
56 | #include <vm/vm_kern.h> | |
57 | #include <vm/vm_page.h> | |
58 | #include <vm/vm_object.h> | |
59 | #include <vm/swap_pager.h> | |
60 | #include <vm/vnode_pager.h> | |
61 | ||
62 | #include <stdio.h> | |
63 | #include <stdlib.h> | |
64 | #include <string.h> | |
65 | #include <fcntl.h> | |
66 | #include <kvm.h> | |
67 | #include <nlist.h> | |
68 | #include <getopt.h> | |
69 | ||
70 | struct nlist Nl[] = { | |
069cac03 | 71 | #if 0 |
84b7e3cd MD |
72 | { "_vm_page_buckets" }, |
73 | { "_vm_page_hash_mask" }, | |
069cac03 | 74 | #endif |
84b7e3cd MD |
75 | { "_vm_page_array" }, |
76 | { "_vm_page_array_size" }, | |
77 | { NULL } | |
78 | }; | |
79 | ||
80 | int debugopt; | |
e36e284d | 81 | int verboseopt; |
069cac03 | 82 | #if 0 |
84b7e3cd MD |
83 | struct vm_page **vm_page_buckets; |
84 | int vm_page_hash_mask; | |
069cac03 | 85 | #endif |
84b7e3cd MD |
86 | struct vm_page *vm_page_array; |
87 | int vm_page_array_size; | |
88 | ||
89 | void checkpage(kvm_t *kd, vm_page_t mptr, vm_page_t m, struct vm_object *obj); | |
90 | void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes); | |
91 | ||
92 | int | |
93 | main(int ac, char **av) | |
94 | { | |
95 | const char *corefile = NULL; | |
96 | const char *sysfile = NULL; | |
97 | vm_page_t mptr; | |
98 | struct vm_page m; | |
99 | struct vm_object obj; | |
100 | kvm_t *kd; | |
101 | int ch; | |
102 | int hv; | |
103 | int i; | |
e36e284d MD |
104 | const char *qstr; |
105 | const char *ostr; | |
84b7e3cd | 106 | |
e36e284d | 107 | while ((ch = getopt(ac, av, "M:N:dv")) != -1) { |
84b7e3cd MD |
108 | switch(ch) { |
109 | case 'd': | |
110 | ++debugopt; | |
111 | break; | |
e36e284d MD |
112 | case 'v': |
113 | ++verboseopt; | |
114 | break; | |
84b7e3cd MD |
115 | case 'M': |
116 | corefile = optarg; | |
117 | break; | |
118 | case 'N': | |
119 | sysfile = optarg; | |
120 | break; | |
121 | default: | |
122 | fprintf(stderr, "%s [-M core] [-N system]\n", av[0]); | |
123 | exit(1); | |
124 | } | |
125 | } | |
126 | ac -= optind; | |
127 | av += optind; | |
128 | ||
129 | if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) { | |
130 | perror("kvm_open"); | |
131 | exit(1); | |
132 | } | |
133 | if (kvm_nlist(kd, Nl) != 0) { | |
134 | perror("kvm_nlist"); | |
135 | exit(1); | |
136 | } | |
137 | ||
069cac03 | 138 | #if 0 |
84b7e3cd MD |
139 | kkread(kd, Nl[0].n_value, &vm_page_buckets, sizeof(vm_page_buckets)); |
140 | kkread(kd, Nl[1].n_value, &vm_page_hash_mask, sizeof(vm_page_hash_mask)); | |
069cac03 MD |
141 | #endif |
142 | kkread(kd, Nl[0].n_value, &vm_page_array, sizeof(vm_page_array)); | |
143 | kkread(kd, Nl[1].n_value, &vm_page_array_size, sizeof(vm_page_array_size)); | |
84b7e3cd MD |
144 | |
145 | /* | |
146 | * Scan the vm_page_array validating all pages with associated objects | |
147 | */ | |
148 | for (i = 0; i < vm_page_array_size; ++i) { | |
149 | if (debugopt) { | |
150 | printf("page %d\r", i); | |
151 | fflush(stdout); | |
152 | } | |
153 | kkread(kd, (u_long)&vm_page_array[i], &m, sizeof(m)); | |
154 | if (m.object) { | |
155 | kkread(kd, (u_long)m.object, &obj, sizeof(obj)); | |
156 | checkpage(kd, &vm_page_array[i], &m, &obj); | |
157 | } | |
e36e284d MD |
158 | if (verboseopt) { |
159 | if (m.queue >= PQ_HOLD) { | |
160 | qstr = "HOLD"; | |
161 | } else if (m.queue >= PQ_CACHE) { | |
162 | qstr = "CACHE"; | |
163 | } else if (m.queue >= PQ_ACTIVE) { | |
164 | qstr = "ACTIVE"; | |
165 | } else if (m.queue >= PQ_INACTIVE) { | |
166 | qstr = "INACTIVE"; | |
167 | } else if (m.queue >= PQ_FREE) { | |
168 | qstr = "FREE"; | |
169 | } else { | |
170 | qstr = "NONE"; | |
171 | } | |
069cac03 MD |
172 | printf("page %p obj %p/%-8jd val=%02x dty=%02x hold=%d " |
173 | "wire=%-2d act=%-3d busy=%d %8s", | |
e36e284d | 174 | &vm_page_array[i], |
069cac03 MD |
175 | m.object, |
176 | (intmax_t)m.pindex, | |
e36e284d MD |
177 | m.valid, |
178 | m.dirty, | |
179 | m.hold_count, | |
180 | m.wire_count, | |
181 | m.act_count, | |
182 | m.busy, | |
e36e284d MD |
183 | qstr |
184 | ); | |
185 | switch(obj.type) { | |
186 | case OBJT_DEFAULT: | |
187 | ostr = "default"; | |
188 | break; | |
189 | case OBJT_SWAP: | |
190 | ostr = "swap"; | |
191 | break; | |
192 | case OBJT_VNODE: | |
193 | ostr = "vnode"; | |
194 | break; | |
195 | case OBJT_DEVICE: | |
196 | ostr = "device"; | |
197 | break; | |
198 | case OBJT_PHYS: | |
199 | ostr = "phys"; | |
200 | break; | |
201 | case OBJT_DEAD: | |
202 | ostr = "dead"; | |
203 | break; | |
204 | default: | |
205 | ostr = "unknown"; | |
206 | break; | |
207 | } | |
069cac03 MD |
208 | printf(" %-7s", ostr); |
209 | if (m.flags & PG_BUSY) | |
210 | printf(" BUSY"); | |
211 | if (m.flags & PG_WANTED) | |
212 | printf(" WANTED"); | |
213 | if (m.flags & PG_WINATCFLS) | |
214 | printf(" WINATCFLS"); | |
215 | if (m.flags & PG_FICTITIOUS) | |
216 | printf(" FICTITIOUS"); | |
217 | if (m.flags & PG_WRITEABLE) | |
218 | printf(" WRITEABLE"); | |
219 | if (m.flags & PG_MAPPED) | |
220 | printf(" MAPPED"); | |
221 | if (m.flags & PG_ZERO) | |
222 | printf(" ZERO"); | |
223 | if (m.flags & PG_REFERENCED) | |
224 | printf(" REFERENCED"); | |
225 | if (m.flags & PG_CLEANCHK) | |
226 | printf(" CLEANCHK"); | |
227 | if (m.flags & PG_SWAPINPROG) | |
228 | printf(" SWAPINPROG"); | |
229 | if (m.flags & PG_NOSYNC) | |
230 | printf(" NOSYNC"); | |
231 | if (m.flags & PG_UNMANAGED) | |
232 | printf(" UNMANAGED"); | |
233 | if (m.flags & PG_MARKER) | |
234 | printf(" MARKER"); | |
235 | if (m.flags & PG_RAM) | |
236 | printf(" RAM"); | |
237 | if (m.flags & PG_SWAPPED) | |
238 | printf(" SWAPPED"); | |
239 | printf("\n"); | |
e36e284d | 240 | } |
84b7e3cd | 241 | } |
e36e284d | 242 | if (debugopt || verboseopt) |
84b7e3cd MD |
243 | printf("\n"); |
244 | ||
069cac03 | 245 | #if 0 |
84b7e3cd MD |
246 | /* |
247 | * Scan the vm_page_buckets array validating all pages found | |
248 | */ | |
249 | for (i = 0; i <= vm_page_hash_mask; ++i) { | |
250 | if (debugopt) { | |
251 | printf("index %d\r", i); | |
252 | fflush(stdout); | |
253 | } | |
254 | kkread(kd, (u_long)&vm_page_buckets[i], &mptr, sizeof(mptr)); | |
255 | while (mptr) { | |
256 | kkread(kd, (u_long)mptr, &m, sizeof(m)); | |
257 | if (m.object) { | |
258 | kkread(kd, (u_long)m.object, &obj, sizeof(obj)); | |
259 | hv = ((uintptr_t)m.object + m.pindex) ^ obj.hash_rand; | |
260 | hv &= vm_page_hash_mask; | |
261 | if (i != hv) | |
262 | printf("vm_page_buckets[%d] ((struct vm_page *)%p)" | |
263 | " should be in bucket %d\n", i, mptr, hv); | |
264 | checkpage(kd, mptr, &m, &obj); | |
265 | } else { | |
266 | printf("vm_page_buckets[%d] ((struct vm_page *)%p)" | |
267 | " has no object\n", i, mptr); | |
268 | } | |
269 | mptr = m.hnext; | |
270 | } | |
271 | } | |
069cac03 | 272 | #endif |
84b7e3cd MD |
273 | if (debugopt) |
274 | printf("\n"); | |
275 | return(0); | |
276 | } | |
277 | ||
278 | /* | |
279 | * A page with an object. | |
280 | */ | |
281 | void | |
282 | checkpage(kvm_t *kd, vm_page_t mptr, vm_page_t m, struct vm_object *obj) | |
283 | { | |
069cac03 | 284 | #if 0 |
84b7e3cd MD |
285 | struct vm_page scan; |
286 | vm_page_t scanptr; | |
287 | int hv; | |
288 | ||
289 | hv = ((uintptr_t)m->object + m->pindex) ^ obj->hash_rand; | |
290 | hv &= vm_page_hash_mask; | |
291 | kkread(kd, (u_long)&vm_page_buckets[hv], &scanptr, sizeof(scanptr)); | |
292 | while (scanptr) { | |
293 | if (scanptr == mptr) | |
294 | break; | |
295 | kkread(kd, (u_long)scanptr, &scan, sizeof(scan)); | |
296 | scanptr = scan.hnext; | |
297 | } | |
298 | if (scanptr) { | |
299 | if (debugopt > 1) | |
300 | printf("good checkpage %p bucket %d\n", mptr, hv); | |
301 | } else { | |
302 | printf("vm_page_buckets[%d] ((struct vm_page *)%p)" | |
303 | " page not found in bucket list\n", hv, mptr); | |
304 | } | |
069cac03 | 305 | #endif |
84b7e3cd MD |
306 | } |
307 | ||
308 | void | |
309 | kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes) | |
310 | { | |
311 | if (kvm_read(kd, addr, buf, nbytes) != nbytes) { | |
312 | perror("kvm_read"); | |
313 | exit(1); | |
314 | } | |
315 | } | |
316 |