4 * cc -I/usr/src/sys kmapinfo.c -o ~/bin/kmapinfo -lkvm
8 * Copyright (c) 2010 The DragonFly Project. All rights reserved.
10 * This code is derived from software contributed to The DragonFly Project
11 * by Matthew Dillon <dillon@backplane.com>
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
23 * 3. Neither the name of The DragonFly Project nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific, prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
30 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
31 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
32 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
33 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
34 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
35 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
37 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 #define _KERNEL_STRUCTURES_
42 #include <sys/param.h>
44 #include <sys/malloc.h>
45 #include <sys/signalvar.h>
46 #include <sys/vnode.h>
47 #include <sys/namecache.h>
50 #include <vm/vm_page.h>
51 #include <vm/vm_kern.h>
52 #include <vm/vm_page.h>
53 #include <vm/vm_object.h>
54 #include <vm/vm_map.h>
55 #include <vm/swap_pager.h>
56 #include <vm/vnode_pager.h>
74 vm_offset_t total_empty;
75 vm_offset_t total_used;
76 vm_offset_t total_real;
77 vm_offset_t total_used_byid[VM_SUBSYS_LIMIT];
79 static const char *formatnum(int64_t value);
80 static const char *entryid(vm_subsys_t id, int *realmemp);
81 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
82 static void mapscan(kvm_t *kd, vm_map_entry_t kptr, vm_map_entry_t ken,
86 main(int ac, char **av)
88 const char *corefile = NULL;
89 const char *sysfile = NULL;
94 struct vm_map_entry entry;
95 struct vm_map_entry *kptr;
97 while ((ch = getopt(ac, av, "M:N:dv")) != -1) {
112 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
119 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
123 if (kvm_nlist(kd, Nl) != 0) {
127 kkread(kd, Nl[0].n_value, &kmap, sizeof(kmap));
128 last = kmap.min_addr;
130 kptr = kvm_vm_map_entry_first(kd, &kmap, &entry);
132 mapscan(kd, kptr, &entry, &last);
133 kptr = kvm_vm_map_entry_next(kd, kptr, &entry);
136 printf("%4ldM 0x%016jx %08lx-%08lx (%6s) EMPTY\n",
137 total_used / 1024 / 1024,
140 formatnum(kmap.max_addr - last));
141 total_empty += kmap.max_addr - last;
143 printf("-----------------------------------------------\n");
144 for (i = 0; i < VM_SUBSYS_LIMIT; ++i) {
146 const char *id = entryid(i, &realmem);
148 printf("Total-id: %9s %s%s\n",
150 formatnum(total_used_byid[i]),
151 (realmem ? " (real memory)" : ""));
154 printf("-----------------------------------------------\n");
155 printf("Total empty space: %s\n", formatnum(total_empty));
156 printf("Total used space: %s\n", formatnum(total_used));
157 printf("Total real space: %s\n", formatnum(total_real));
161 formatnum(int64_t value)
174 if (value < 100000) {
177 } else if (value < 1 * 1024 * 1024) {
180 } else if (value < 1024 * 1024 * 1024) {
183 } else if (value < 1024LL * 1024 * 1024 * 1024) {
184 div = 1024 * 1024 * 1024;
187 div = 1024LL * 1024 * 1024 * 1024;
191 snprintf(buf, sizeof(buf), "");
192 } else if (div == 1) {
193 snprintf(buf, sizeof(buf), "%s%7.0f%s",
195 (double)value / (double)div,
198 snprintf(buf, sizeof(buf), "%s%6.2f%s",
200 (double)value / (double)div,
207 mapscan(kvm_t *kd, vm_map_entry_t kptr, vm_map_entry_t ken, vm_offset_t *lastp)
211 if (*lastp != ken->ba.start) {
212 printf("%4ldM %p %08lx-%08lx (%s) EMPTY\n",
213 total_used / 1024 / 1024,
215 *lastp, ken->ba.start,
216 formatnum(ken->ba.start - *lastp));
217 total_empty += ken->ba.start - *lastp;
219 printf("%4ldM %p %08lx-%08lx (%6ldK) id=%-8s object=%p\n",
220 total_used / 1024 / 1024,
222 ken->ba.start, ken->ba.end,
223 (ken->ba.end - ken->ba.start) / 1024,
224 entryid(ken->id, &realmem),
226 total_used += ken->ba.end - ken->ba.start;
228 if (ken->id < VM_SUBSYS_LIMIT)
229 total_used_byid[ken->id] += ken->ba.end - ken->ba.start;
231 total_used_byid[0] += ken->ba.end - ken->ba.start;
234 total_real += ken->ba.end - ken->ba.start;
236 *lastp = ken->ba.end;
241 entryid(vm_subsys_t id, int *realmemp)
245 int *realmem = (realmemp ? realmemp : &dummy);
250 case VM_SUBSYS_UNKNOWN:
252 case VM_SUBSYS_KMALLOC:
255 case VM_SUBSYS_STACK:
258 case VM_SUBSYS_IMGACT:
262 case VM_SUBSYS_RESERVED:
271 case VM_SUBSYS_SHMEM:
273 case VM_SUBSYS_SYSMAP:
279 case VM_SUBSYS_BOGUS:
284 case VM_SUBSYS_BUFDATA:
292 case VM_SUBSYS_PVENTRY:
298 case VM_SUBSYS_MAPDEV:
300 case VM_SUBSYS_ZALLOC:
305 case VM_SUBSYS_CONTIG:
309 case VM_SUBSYS_DRM_GEM:
311 case VM_SUBSYS_DRM_SCAT:
313 case VM_SUBSYS_DRM_VMAP:
316 case VM_SUBSYS_DRM_TTM:
318 case VM_SUBSYS_HAMMER:
320 case VM_SUBSYS_VMPGHASH:
326 snprintf(buf, sizeof(buf), "%d", (int)id);
333 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
335 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {