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_used_byid[VM_SUBSYS_LIMIT];
78 static const char *formatnum(int64_t value);
79 static const char *entryid(vm_subsys_t id);
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 entry,
85 main(int ac, char **av)
87 const char *corefile = NULL;
88 const char *sysfile = NULL;
94 while ((ch = getopt(ac, av, "M:N:dv")) != -1) {
109 fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
116 if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
120 if (kvm_nlist(kd, Nl) != 0) {
124 kkread(kd, Nl[0].n_value, &kmap, sizeof(kmap));
125 last = kmap.header.start;
126 mapscan(kd, kmap.rb_root.rbh_root, &last);
128 printf("%4ldM 0x%016jx %08lx-%08lx (%6s) EMPTY\n",
129 total_used / 1024 / 1024,
131 last, kmap.header.end,
132 formatnum(kmap.header.end - last));
133 total_empty += kmap.header.end - last;
135 printf("-----------------------------------------------\n");
136 for (i = 0; i < VM_SUBSYS_LIMIT; ++i)
137 printf("Total-id: %9s %s\n", entryid(i), formatnum(total_used_byid[i]));
139 printf("-----------------------------------------------\n");
140 printf("Total empty space: %s\n", formatnum(total_empty));
141 printf("Total used space: %s\n", formatnum(total_used));
145 formatnum(int64_t value)
158 if (value < 100000) {
161 } else if (value < 1 * 1024 * 1024) {
164 } else if (value < 1024 * 1024 * 1024) {
167 } else if (value < 1024LL * 1024 * 1024 * 1024) {
168 div = 1024 * 1024 * 1024;
171 div = 1024LL * 1024 * 1024 * 1024;
175 snprintf(buf, sizeof(buf), "");
176 } else if (div == 1) {
177 snprintf(buf, sizeof(buf), "%s%7.0f%s",
179 (double)value / (double)div,
182 snprintf(buf, sizeof(buf), "%s%6.2f%s",
184 (double)value / (double)div,
191 mapscan(kvm_t *kd, vm_map_entry_t entryp, vm_offset_t *lastp)
193 struct vm_map_entry entry;
197 kkread(kd, (u_long)entryp, &entry, sizeof(entry));
198 mapscan(kd, entry.rb_entry.rbe_left, lastp);
199 if (*lastp != entry.start) {
200 printf("%4ldM %p %08lx-%08lx (%s) EMPTY\n",
201 total_used / 1024 / 1024,
204 formatnum(entry.start - *lastp));
205 total_empty += entry.start - *lastp;
207 printf("%4ldM %p %08lx-%08lx (%6ldK) id=%-8s object=%p\n",
208 total_used / 1024 / 1024,
210 entry.start, entry.end,
211 (entry.end - entry.start) / 1024,
213 entry.object.map_object);
214 total_used += entry.end - entry.start;
215 if (entry.id < VM_SUBSYS_LIMIT)
216 total_used_byid[entry.id] += entry.end - entry.start;
218 total_used_byid[0] += entry.end - entry.start;
220 mapscan(kd, entry.rb_entry.rbe_right, lastp);
225 entryid(vm_subsys_t id)
230 case VM_SUBSYS_UNKNOWN:
232 case VM_SUBSYS_KMALLOC:
234 case VM_SUBSYS_STACK:
236 case VM_SUBSYS_IMGACT:
240 case VM_SUBSYS_RESERVED:
248 case VM_SUBSYS_SHMEM:
250 case VM_SUBSYS_SYSMAP:
256 case VM_SUBSYS_BOGUS:
260 case VM_SUBSYS_BUFDATA:
266 case VM_SUBSYS_PVENTRY:
270 case VM_SUBSYS_MAPDEV:
272 case VM_SUBSYS_ZALLOC:
277 case VM_SUBSYS_CONTIG:
281 case VM_SUBSYS_DRM_GEM:
283 case VM_SUBSYS_DRM_SCAT:
285 case VM_SUBSYS_DRM_VMAP:
287 case VM_SUBSYS_DRM_TTM:
289 case VM_SUBSYS_HAMMER:
294 snprintf(buf, sizeof(buf), "%d", (int)id);
301 kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
303 if (kvm_read(kd, addr, buf, nbytes) != nbytes) {