tools/tools/umastat/umastat.c

   1 /*-
   2  * Copyright (c) 2005 Robert N. M. Watson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #include <sys/param.h>
  30
  31 #define LIBMEMSTAT      /* Cause vm_page.h not to include opt_vmpage.h */
  32 #include <vm/vm.h>
  33 #include <vm/vm_page.h>
  34
  35 #include <vm/uma.h>
  36 #include <vm/uma_int.h>
  37
  38 #include <err.h>
  39 #include <kvm.h>
  40 #include <limits.h>
  41 #include <memstat.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45
  46 static struct nlist namelist[] = {
  47 #define X_UMA_KEGS      0
  48         { .n_name = "_uma_kegs" },
  49 #define X_MP_MAXCPUS    1
  50         { .n_name = "_mp_maxcpus" },
  51 #define X_MP_MAXID      2
  52         { .n_name = "_mp_maxid" },
  53 #define X_ALLCPU        3
  54         { .n_name = "_all_cpus" },
  55         { .n_name = "" },
  56 };
  57
  58 static void
  59 usage(void)
  60 {
  61
  62         fprintf(stderr, "umastat [-M core [-N system]]\n");
  63         exit(-1);
  64 }
  65
  66 static int
  67 kread(kvm_t *kvm, void *kvm_pointer, void *address, size_t size,
  68     size_t offset)
  69 {
  70         ssize_t ret;
  71
  72         ret = kvm_read(kvm, (unsigned long)kvm_pointer + offset, address,
  73             size);
  74         if (ret < 0)
  75                 return (MEMSTAT_ERROR_KVM);
  76         if ((size_t)ret != size)
  77                 return (MEMSTAT_ERROR_KVM_SHORTREAD);
  78         return (0);
  79 }
  80
  81 static int
  82 kread_string(kvm_t *kvm, const void *kvm_pointer, char *buffer, int buflen)
  83 {
  84         ssize_t ret;
  85         int i;
  86
  87         for (i = 0; i < buflen; i++) {
  88                 ret = kvm_read(kvm, (unsigned long)kvm_pointer + i,
  89                     &(buffer[i]), sizeof(char));
  90                 if (ret < 0)
  91                         return (MEMSTAT_ERROR_KVM);
  92                 if ((size_t)ret != sizeof(char))
  93                         return (MEMSTAT_ERROR_KVM_SHORTREAD);
  94                 if (buffer[i] == '\0')
  95                         return (0);
  96         }
  97         /* Truncate. */
  98         buffer[i-1] = '\0';
  99         return (0);
 100 }
 101
 102 static int
 103 kread_symbol(kvm_t *kvm, int index, void *address, size_t size,
 104     size_t offset)
 105 {
 106         ssize_t ret;
 107
 108         ret = kvm_read(kvm, namelist[index].n_value + offset, address, size);
 109         if (ret < 0)
 110                 return (MEMSTAT_ERROR_KVM);
 111         if ((size_t)ret != size)
 112                 return (MEMSTAT_ERROR_KVM_SHORTREAD);
 113         return (0);
 114 }
 115
 116 static const struct flaginfo {
 117         u_int32_t        fi_flag;
 118         const char      *fi_name;
 119 } flaginfo[] = {
 120         { UMA_ZFLAG_MULTI, "multi" },
 121         { UMA_ZFLAG_DRAINING, "draining" },
 122         { UMA_ZFLAG_BUCKET, "bucket" },
 123         { UMA_ZFLAG_INTERNAL, "internal" },
 124         { UMA_ZFLAG_FULL, "full" },
 125         { UMA_ZFLAG_CACHEONLY, "cacheonly" },
 126         { UMA_ZONE_PAGEABLE, "pageable" },
 127         { UMA_ZONE_ZINIT, "zinit" },
 128         { UMA_ZONE_STATIC, "static" },
 129         { UMA_ZONE_OFFPAGE, "offpage" },
 130         { UMA_ZONE_MALLOC, "malloc" },
 131         { UMA_ZONE_NOFREE, "nofree" },
 132         { UMA_ZONE_MTXCLASS, "mtxclass" },
 133         { UMA_ZONE_VM, "vm" },
 134         { UMA_ZONE_HASH, "hash" },
 135         { UMA_ZONE_SECONDARY, "secondary" },
 136         { UMA_ZONE_REFCNT, "refcnt" },
 137         { UMA_ZONE_MAXBUCKET, "maxbucket" },
 138         { UMA_ZONE_CACHESPREAD, "cachespread" },
 139         { UMA_ZONE_VTOSLAB, "vtoslab" },
 140         { UMA_ZONE_NODUMP, "nodump" },
 141         { UMA_ZONE_PCPU, "pcpu" },
 142 };
 143 static const int flaginfo_count = sizeof(flaginfo) / sizeof(struct flaginfo);
 144
 145 static void
 146 uma_print_keg_flags(struct uma_keg *ukp, const char *spaces)
 147 {
 148         int count, i;
 149
 150         if (!ukp->uk_flags) {
 151                 printf("%suk_flags = 0;\n", spaces);
 152                 return;
 153         }
 154
 155         printf("%suk_flags = ", spaces);
 156         for (i = 0, count = 0; i < flaginfo_count; i++) {
 157                 if (ukp->uk_flags & flaginfo[i].fi_flag) {
 158                         if (count++ > 0)
 159                                 printf(" | ");
 160                         printf("%s", flaginfo[i].fi_name);
 161                 }
 162
 163         }
 164         printf(";\n");
 165 }
 166
 167 static void
 168 uma_print_keg_align(struct uma_keg *ukp, const char *spaces)
 169 {
 170
 171         switch(ukp->uk_align) {
 172         case UMA_ALIGN_PTR:
 173                 printf("%suk_align = UMA_ALIGN_PTR;\n", spaces);
 174                 break;
 175
 176 #if 0
 177         case UMA_ALIGN_LONG:
 178                 printf("%suk_align = UMA_ALIGN_LONG;\n", spaces);
 179                 break;
 180
 181         case UMA_ALIGN_INT:
 182                 printf("%suk_align = UMA_ALIGN_INT;\n", spaces);
 183                 break;
 184 #endif
 185
 186         case UMA_ALIGN_SHORT:
 187                 printf("%suk_align = UMA_ALIGN_SHORT;\n", spaces);
 188                 break;
 189
 190         case UMA_ALIGN_CHAR:
 191                 printf("%suk_align = UMA_ALIGN_CHAR;\n", spaces);
 192                 break;
 193
 194         case UMA_ALIGN_CACHE:
 195                 printf("%suk_align = UMA_ALIGN_CACHE;\n", spaces);
 196                 break;
 197
 198         default:
 199                 printf("%suk_align = %d\n", spaces, ukp->uk_align);
 200         }
 201 }
 202
 203 LIST_HEAD(bucketlist, uma_bucket);
 204
 205 static void
 206 uma_print_bucket(struct uma_bucket *ubp, const char *spaces __unused)
 207 {
 208
 209         printf("{ ub_cnt = %d, ub_entries = %d }", ubp->ub_cnt,
 210             ubp->ub_entries);
 211 }
 212
 213 static void
 214 uma_print_bucketlist(kvm_t *kvm, struct bucketlist *bucketlist,
 215     const char *name, const char *spaces)
 216 {
 217         struct uma_bucket *ubp, ub;
 218         uint64_t total_entries, total_cnt;
 219         int count, ret;
 220
 221         printf("%s%s {", spaces, name);
 222
 223         total_entries = total_cnt = 0;
 224         count = 0;
 225         for (ubp = LIST_FIRST(bucketlist); ubp != NULL; ubp =
 226             LIST_NEXT(&ub, ub_link)) {
 227                 ret = kread(kvm, ubp, &ub, sizeof(ub), 0);
 228                 if (ret != 0)
 229                         errx(-1, "uma_print_bucketlist: %s", kvm_geterr(kvm));
 230                 if (count % 2 == 0)
 231                         printf("\n%s  ", spaces);
 232                 uma_print_bucket(&ub, "");
 233                 printf(" ");
 234                 total_entries += ub.ub_entries;
 235                 total_cnt += ub.ub_cnt;
 236                 count++;
 237         }
 238
 239         printf("\n");
 240         printf("%s};  // total cnt %ju, total entries %ju\n", spaces,
 241             total_cnt, total_entries);
 242 }
 243
 244 static void
 245 uma_print_cache(kvm_t *kvm, struct uma_cache *cache, const char *name,
 246     int cpu, const char *spaces, int *ub_cnt_add, int *ub_entries_add)
 247 {
 248         struct uma_bucket ub;
 249         int ret;
 250
 251         printf("%s%s[%d] = {\n", spaces, name, cpu);
 252         printf("%s  uc_frees = %ju;\n", spaces, cache->uc_frees);
 253         printf("%s  uc_allocs = %ju;\n", spaces, cache->uc_allocs);
 254
 255         if (cache->uc_freebucket != NULL) {
 256                 ret = kread(kvm, cache->uc_freebucket, &ub, sizeof(ub), 0);
 257                 if (ret != 0)
 258                         errx(-1, "uma_print_cache: %s", kvm_geterr(kvm));
 259                 printf("%s  uc_freebucket ", spaces);
 260                 uma_print_bucket(&ub, spaces);
 261                 printf(";\n");
 262                 if (ub_cnt_add != NULL)
 263                         *ub_cnt_add += ub.ub_cnt;
 264                 if (ub_entries_add != NULL)
 265                         *ub_entries_add += ub.ub_entries;
 266         } else
 267                 printf("%s  uc_freebucket = NULL;\n", spaces);
 268         if (cache->uc_allocbucket != NULL) {
 269                 ret = kread(kvm, cache->uc_allocbucket, &ub, sizeof(ub), 0);
 270                 if (ret != 0)
 271                         errx(-1, "uma_print_cache: %s", kvm_geterr(kvm));
 272                 printf("%s  uc_allocbucket ", spaces);
 273                 uma_print_bucket(&ub, spaces);
 274                 printf(";\n");
 275                 if (ub_cnt_add != NULL)
 276                         *ub_cnt_add += ub.ub_cnt;
 277                 if (ub_entries_add != NULL)
 278                         *ub_entries_add += ub.ub_entries;
 279         } else
 280                 printf("%s  uc_allocbucket = NULL;\n", spaces);
 281         printf("%s};\n", spaces);
 282 }
 283
 284 int
 285 main(int argc, char *argv[])
 286 {
 287         LIST_HEAD(, uma_keg) uma_kegs;
 288         char name[MEMTYPE_MAXNAME];
 289         struct uma_keg *kzp, kz;
 290         struct uma_zone *uzp, *uzp_userspace;
 291         kvm_t *kvm;
 292         int all_cpus, cpu, mp_maxcpus, mp_maxid, ret, ub_cnt, ub_entries;
 293         size_t uzp_userspace_len;
 294         char *memf, *nlistf;
 295         int ch;
 296         char errbuf[_POSIX2_LINE_MAX];
 297
 298         memf = nlistf = NULL;
 299         while ((ch = getopt(argc, argv, "M:N:")) != -1) {
 300                 switch (ch) {
 301                 case 'M':
 302                         memf = optarg;
 303                         break;
 304                 case 'N':
 305                         nlistf = optarg;
 306                         break;
 307                 default:
 308                         usage();
 309                 }
 310         }
 311         argc -= optind;
 312         argv += optind;
 313
 314         if (argc != 0)
 315                 usage();
 316         if (nlistf != NULL && memf == NULL)
 317                 usage();
 318
 319         kvm = kvm_openfiles(nlistf, memf, NULL, 0, errbuf);
 320         if (kvm == NULL)
 321                 errx(-1, "kvm_openfiles: %s", errbuf);
 322
 323         if (kvm_nlist(kvm, namelist) != 0)
 324                 err(-1, "kvm_nlist");
 325
 326         if (namelist[X_UMA_KEGS].n_type == 0 ||
 327             namelist[X_UMA_KEGS].n_value == 0)
 328                 errx(-1, "kvm_nlist return");
 329
 330         ret = kread_symbol(kvm, X_MP_MAXCPUS, &mp_maxcpus, sizeof(mp_maxcpus),
 331             0);
 332         if (ret != 0)
 333                 errx(-1, "kread_symbol: %s", kvm_geterr(kvm));
 334
 335         printf("mp_maxcpus = %d\n", mp_maxcpus);
 336
 337         ret = kread_symbol(kvm, X_MP_MAXID, &mp_maxid, sizeof(mp_maxid), 0);
 338         if (ret != 0)
 339                 errx(-1, "kread_symbol: %s", kvm_geterr(kvm));
 340
 341         printf("mp_maxid = %d\n", mp_maxid);
 342
 343         ret = kread_symbol(kvm, X_ALLCPU, &all_cpus, sizeof(all_cpus), 0);
 344         if (ret != 0)
 345                 errx(-1, "kread_symbol: %s", kvm_geterr(kvm));
 346
 347         printf("all_cpus = %x\n", all_cpus);
 348
 349         ret = kread_symbol(kvm, X_UMA_KEGS, &uma_kegs, sizeof(uma_kegs), 0);
 350         if (ret != 0)
 351                 errx(-1, "kread_symbol: %s", kvm_geterr(kvm));
 352
 353         /*
 354          * uma_zone_t ends in an array of mp_maxid cache entries.  However,
 355          * it is statically declared as an array of size 1, so we need to
 356          * provide additional space.
 357          */
 358         uzp_userspace_len = sizeof(struct uma_zone) + mp_maxid *
 359             sizeof(struct uma_cache);
 360         uzp_userspace = malloc(uzp_userspace_len);
 361         if (uzp_userspace == NULL)
 362                 err(-1, "malloc");
 363
 364         for (kzp = LIST_FIRST(&uma_kegs); kzp != NULL; kzp =
 365             LIST_NEXT(&kz, uk_link)) {
 366                 ret = kread(kvm, kzp, &kz, sizeof(kz), 0);
 367                 if (ret != 0) {
 368                         free(uzp_userspace);
 369                         errx(-1, "kread: %s", kvm_geterr(kvm));
 370                 }
 371                 printf("Keg {\n");
 372
 373                 uma_print_keg_align(&kz, "  ");
 374                 printf("  uk_pages = %d\n", kz.uk_pages);
 375                 printf("  uk_free = %d\n", kz.uk_free);
 376                 printf("  uk_reserve = %d\n", kz.uk_reserve);
 377                 printf("  uk_size = %d\n", kz.uk_size);
 378                 printf("  uk_rsize = %d\n", kz.uk_rsize);
 379                 printf("  uk_maxpages = %d\n", kz.uk_maxpages);
 380
 381                 printf("  uk_slabsize = %d\n", kz.uk_slabsize);
 382                 printf("  uk_pgoff = %d\n", kz.uk_pgoff);
 383                 printf("  uk_ppera = %d\n", kz.uk_ppera);
 384                 printf("  uk_ipers = %d\n", kz.uk_ipers);
 385                 uma_print_keg_flags(&kz, "  ");
 386
 387                 if (LIST_FIRST(&kz.uk_zones) == NULL) {
 388                         printf("; No zones.\n");
 389                         printf("};\n");
 390                         continue;
 391                 }
 392                 for (uzp = LIST_FIRST(&kz.uk_zones); uzp != NULL; uzp =
 393                     LIST_NEXT(uzp_userspace, uz_link)) {
 394                         /*
 395                          * We actually copy in twice: once with the base
 396                          * structure, so that we can then decide if we also
 397                          * need to copy in the caches.  This prevents us
 398                          * from reading past the end of the base UMA zones,
 399                          * which is unlikely to cause problems but could.
 400                          */
 401                         ret = kread(kvm, uzp, uzp_userspace,
 402                             sizeof(struct uma_zone), 0);
 403                         if (ret != 0) {
 404                                 free(uzp_userspace);
 405                                 errx(-1, "kread: %s", kvm_geterr(kvm));
 406                         }
 407                         if (!(kz.uk_flags & UMA_ZFLAG_INTERNAL)) {
 408                                 ret = kread(kvm, uzp, uzp_userspace,
 409                                     uzp_userspace_len, 0);
 410                                 if (ret != 0) {
 411                                         free(uzp_userspace);
 412                                         errx(-1, "kread: %s",
 413                                             kvm_geterr(kvm));
 414                                 }
 415                         }
 416                         ret = kread_string(kvm, uzp_userspace->uz_name, name,
 417                             MEMTYPE_MAXNAME);
 418                         if (ret != 0) {
 419                                 free(uzp_userspace);
 420                                 errx(-1, "kread_string: %s", kvm_geterr(kvm));
 421                         }
 422                         printf("  Zone {\n");
 423                         printf("    uz_name = \"%s\";\n", name);
 424                         printf("    uz_allocs = %lu;\n",
 425                             uzp_userspace->uz_allocs);
 426                         printf("    uz_frees = %lu;\n",
 427                             uzp_userspace->uz_frees);
 428                         printf("    uz_fails = %lu;\n",
 429                             uzp_userspace->uz_fails);
 430                         printf("    uz_sleeps = %ju;\n",
 431                             uzp_userspace->uz_sleeps);
 432                         printf("    uz_count = %u;\n",
 433                             uzp_userspace->uz_count);
 434                         uma_print_bucketlist(kvm, (void *)
 435                             &uzp_userspace->uz_buckets, "uz_buckets",
 436                             "    ");
 437
 438                         if (!(kz.uk_flags & UMA_ZFLAG_INTERNAL)) {
 439                                 ub_cnt = ub_entries = 0;
 440                                 for (cpu = 0; cpu <= mp_maxid; cpu++) {
 441                                         /* if (CPU_ABSENT(cpu)) */
 442                                         if ((all_cpus & (1 << cpu)) == 0)
 443                                                 continue;
 444                                         uma_print_cache(kvm,
 445                                             &uzp_userspace->uz_cpu[cpu],
 446                                             "uc_cache", cpu, "    ", &ub_cnt,
 447                                             &ub_entries);
 448                                 }
 449                                 printf("    // %d cache total cnt, %d total "
 450                                     "entries\n", ub_cnt, ub_entries);
 451                         }
 452
 453                         printf("  };\n");
 454                 }
 455                 printf("};\n");
 456         }
 457
 458         free(uzp_userspace);
 459         return (0);
 460 }