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_object.h>
53 #include <vm/vm_map.h>
54 #include <vm/swap_pager.h>
55 #include <vm/vnode_pager.h>
73 vm_offset_t total_empty;
74 vm_offset_t total_used;
75 vm_offset_t total_real;
76 vm_offset_t total_used_byid[VM_SUBSYS_LIMIT];
78 static const char *formatnum(int64_t value);
79 static const char *entryid(vm_subsys_t id, int *realmemp);
80 static void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);
81 static void mapscan(kvm_t *kd, vm_map_entry_t kptr, vm_map_entry_t ken,
85 main(int ac, char **av)
87 const char *corefile = NULL;
88 const char *sysfile = NULL;
93 struct vm_map_entry entry;
94 struct vm_map_entry *kptr;
96 while ((ch = getopt(ac, av, "M:N:dv")) != -1) {
111 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
118 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
122 if (kvm_nlist(kd, Nl) != 0) {
126 kkread(kd, Nl[0].n_value, &kmap, sizeof(kmap));
127 last = kmap.min_addr;
129 kptr = kvm_vm_map_entry_first(kd, &kmap, &entry);
131 mapscan(kd, kptr, &entry, &last);
132 kptr = kvm_vm_map_entry_next(kd, kptr, &entry);
135 printf("%4ldM 0x%016jx %08lx-%08lx (%6s) EMPTY\n",
136 total_used / 1024 / 1024,
139 formatnum(kmap.max_addr - last));
140 total_empty += kmap.max_addr - last;
142 printf("-----------------------------------------------\n");
143 for (i = 0; i < VM_SUBSYS_LIMIT; ++i) {
145 const char *id = entryid(i, &realmem);
147 printf("Total-id: %9s %s%s\n",
149 formatnum(total_used_byid[i]),
150 (realmem ? " (real memory)" : ""));
153 printf("-----------------------------------------------\n");
154 printf("Total empty space: %s\n", formatnum(total_empty));
155 printf("Total used space: %s\n", formatnum(total_used));
156 printf("Total real space: %s\n", formatnum(total_real));
160 formatnum(int64_t value)
173 if (value < 100000) {
176 } else if (value < 1 * 1024 * 1024) {
179 } else if (value < 1024 * 1024 * 1024) {
182 } else if (value < 1024LL * 1024 * 1024 * 1024) {
183 div = 1024 * 1024 * 1024;
186 div = 1024LL * 1024 * 1024 * 1024;
190 snprintf(buf, sizeof(buf), "");
191 } else if (div == 1) {
192 snprintf(buf, sizeof(buf), "%s%7.0f%s",
194 (double)value / (double)div,
197 snprintf(buf, sizeof(buf), "%s%6.2f%s",
199 (double)value / (double)div,
206 mapscan(kvm_t *kd, vm_map_entry_t kptr, vm_map_entry_t ken, vm_offset_t *lastp)
210 if (*lastp != ken->ba.start) {
211 printf("%4ldM %p %08lx-%08lx (%s) EMPTY\n",
212 total_used / 1024 / 1024,
214 *lastp, ken->ba.start,
215 formatnum(ken->ba.start - *lastp));
216 total_empty += ken->ba.start - *lastp;
218 printf("%4ldM %p %08lx-%08lx (%6ldK) id=%-8s object=%p\n",
219 total_used / 1024 / 1024,
221 ken->ba.start, ken->ba.end,
222 (ken->ba.end - ken->ba.start) / 1024,
223 entryid(ken->id, &realmem),
225 total_used += ken->ba.end - ken->ba.start;
227 if (ken->id < VM_SUBSYS_LIMIT)
228 total_used_byid[ken->id] += ken->ba.end - ken->ba.start;
230 total_used_byid[0] += ken->ba.end - ken->ba.start;
233 total_real += ken->ba.end - ken->ba.start;
235 *lastp = ken->ba.end;
240 entryid(vm_subsys_t id, int *realmemp)
244 int *realmem = (realmemp ? realmemp : &dummy);
249 case VM_SUBSYS_UNKNOWN:
251 case VM_SUBSYS_KMALLOC:
254 case VM_SUBSYS_STACK:
257 case VM_SUBSYS_IMGACT:
261 case VM_SUBSYS_RESERVED:
270 case VM_SUBSYS_SHMEM:
272 case VM_SUBSYS_SYSMAP:
278 case VM_SUBSYS_BOGUS:
283 case VM_SUBSYS_BUFDATA:
291 case VM_SUBSYS_PVENTRY:
296 case VM_SUBSYS_MAPDEV:
298 case VM_SUBSYS_ZALLOC:
303 case VM_SUBSYS_CONTIG:
307 case VM_SUBSYS_DRM_GEM:
309 case VM_SUBSYS_DRM_SCAT:
311 case VM_SUBSYS_DRM_VMAP:
314 case VM_SUBSYS_DRM_TTM:
316 case VM_SUBSYS_HAMMER:
318 case VM_SUBSYS_VMPGHASH:
324 snprintf(buf, sizeof(buf), "%d", (int)id);
331 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
333 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {