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0012 #include <stdio.h>
0013 #include <stdlib.h>
0014 #include <sys/types.h>
0015 #include <dirent.h>
0016 #include <strings.h>
0017 #include <string.h>
0018 #include <unistd.h>
0019 #include <stdarg.h>
0020 #include <getopt.h>
0021 #include <regex.h>
0022 #include <errno.h>
0023
0024 #define MAX_SLABS 500
0025 #define MAX_ALIASES 500
0026 #define MAX_NODES 1024
0027
0028 struct slabinfo {
0029 char *name;
0030 int alias;
0031 int refs;
0032 int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu;
0033 unsigned int hwcache_align, object_size, objs_per_slab;
0034 unsigned int sanity_checks, slab_size, store_user, trace;
0035 int order, poison, reclaim_account, red_zone;
0036 unsigned long partial, objects, slabs, objects_partial, objects_total;
0037 unsigned long alloc_fastpath, alloc_slowpath;
0038 unsigned long free_fastpath, free_slowpath;
0039 unsigned long free_frozen, free_add_partial, free_remove_partial;
0040 unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill;
0041 unsigned long cpuslab_flush, deactivate_full, deactivate_empty;
0042 unsigned long deactivate_to_head, deactivate_to_tail;
0043 unsigned long deactivate_remote_frees, order_fallback;
0044 unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail;
0045 unsigned long alloc_node_mismatch, deactivate_bypass;
0046 unsigned long cpu_partial_alloc, cpu_partial_free;
0047 int numa[MAX_NODES];
0048 int numa_partial[MAX_NODES];
0049 } slabinfo[MAX_SLABS];
0050
0051 struct aliasinfo {
0052 char *name;
0053 char *ref;
0054 struct slabinfo *slab;
0055 } aliasinfo[MAX_ALIASES];
0056
0057 int slabs;
0058 int actual_slabs;
0059 int aliases;
0060 int alias_targets;
0061 int highest_node;
0062
0063 char buffer[4096];
0064
0065 int show_empty;
0066 int show_report;
0067 int show_alias;
0068 int show_slab;
0069 int skip_zero = 1;
0070 int show_numa;
0071 int show_track;
0072 int show_first_alias;
0073 int validate;
0074 int shrink;
0075 int show_inverted;
0076 int show_single_ref;
0077 int show_totals;
0078 int sort_size;
0079 int sort_active;
0080 int set_debug;
0081 int show_ops;
0082 int sort_partial;
0083 int show_activity;
0084 int output_lines = -1;
0085 int sort_loss;
0086 int extended_totals;
0087 int show_bytes;
0088 int unreclaim_only;
0089
0090
0091 int sanity;
0092 int redzone;
0093 int poison;
0094 int tracking;
0095 int tracing;
0096
0097 int page_size;
0098
0099 regex_t pattern;
0100
0101 static void fatal(const char *x, ...)
0102 {
0103 va_list ap;
0104
0105 va_start(ap, x);
0106 vfprintf(stderr, x, ap);
0107 va_end(ap);
0108 exit(EXIT_FAILURE);
0109 }
0110
0111 static void usage(void)
0112 {
0113 printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n"
0114 "slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
0115 "-a|--aliases Show aliases\n"
0116 "-A|--activity Most active slabs first\n"
0117 "-B|--Bytes Show size in bytes\n"
0118 "-D|--display-active Switch line format to activity\n"
0119 "-e|--empty Show empty slabs\n"
0120 "-f|--first-alias Show first alias\n"
0121 "-h|--help Show usage information\n"
0122 "-i|--inverted Inverted list\n"
0123 "-l|--slabs Show slabs\n"
0124 "-L|--Loss Sort by loss\n"
0125 "-n|--numa Show NUMA information\n"
0126 "-N|--lines=K Show the first K slabs\n"
0127 "-o|--ops Show kmem_cache_ops\n"
0128 "-P|--partial Sort by number of partial slabs\n"
0129 "-r|--report Detailed report on single slabs\n"
0130 "-s|--shrink Shrink slabs\n"
0131 "-S|--Size Sort by size\n"
0132 "-t|--tracking Show alloc/free information\n"
0133 "-T|--Totals Show summary information\n"
0134 "-U|--Unreclaim Show unreclaimable slabs only\n"
0135 "-v|--validate Validate slabs\n"
0136 "-X|--Xtotals Show extended summary information\n"
0137 "-z|--zero Include empty slabs\n"
0138 "-1|--1ref Single reference\n"
0139
0140 "\n"
0141 "-d | --debug Switch off all debug options\n"
0142 "-da | --debug=a Switch on all debug options (--debug=FZPU)\n"
0143
0144 "\n"
0145 "-d[afzput] | --debug=[afzput]\n"
0146 " f | F Sanity Checks (SLAB_CONSISTENCY_CHECKS)\n"
0147 " z | Z Redzoning\n"
0148 " p | P Poisoning\n"
0149 " u | U Tracking\n"
0150 " t | T Tracing\n"
0151
0152 "\nSorting options (--Loss, --Size, --Partial) are mutually exclusive\n"
0153 );
0154 }
0155
0156 static unsigned long read_obj(const char *name)
0157 {
0158 FILE *f = fopen(name, "r");
0159
0160 if (!f)
0161 buffer[0] = 0;
0162 else {
0163 if (!fgets(buffer, sizeof(buffer), f))
0164 buffer[0] = 0;
0165 fclose(f);
0166 if (buffer[strlen(buffer)] == '\n')
0167 buffer[strlen(buffer)] = 0;
0168 }
0169 return strlen(buffer);
0170 }
0171
0172
0173
0174
0175
0176 static unsigned long get_obj(const char *name)
0177 {
0178 if (!read_obj(name))
0179 return 0;
0180
0181 return atol(buffer);
0182 }
0183
0184 static unsigned long get_obj_and_str(const char *name, char **x)
0185 {
0186 unsigned long result = 0;
0187 char *p;
0188
0189 *x = NULL;
0190
0191 if (!read_obj(name)) {
0192 x = NULL;
0193 return 0;
0194 }
0195 result = strtoul(buffer, &p, 10);
0196 while (*p == ' ')
0197 p++;
0198 if (*p)
0199 *x = strdup(p);
0200 return result;
0201 }
0202
0203 static void set_obj(struct slabinfo *s, const char *name, int n)
0204 {
0205 char x[100];
0206 FILE *f;
0207
0208 snprintf(x, 100, "%s/%s", s->name, name);
0209 f = fopen(x, "w");
0210 if (!f)
0211 fatal("Cannot write to %s\n", x);
0212
0213 fprintf(f, "%d\n", n);
0214 fclose(f);
0215 }
0216
0217 static unsigned long read_slab_obj(struct slabinfo *s, const char *name)
0218 {
0219 char x[100];
0220 FILE *f;
0221 size_t l;
0222
0223 snprintf(x, 100, "%s/%s", s->name, name);
0224 f = fopen(x, "r");
0225 if (!f) {
0226 buffer[0] = 0;
0227 l = 0;
0228 } else {
0229 l = fread(buffer, 1, sizeof(buffer), f);
0230 buffer[l] = 0;
0231 fclose(f);
0232 }
0233 return l;
0234 }
0235
0236 static unsigned long read_debug_slab_obj(struct slabinfo *s, const char *name)
0237 {
0238 char x[128];
0239 FILE *f;
0240 size_t l;
0241
0242 snprintf(x, 128, "/sys/kernel/debug/slab/%s/%s", s->name, name);
0243 f = fopen(x, "r");
0244 if (!f) {
0245 buffer[0] = 0;
0246 l = 0;
0247 } else {
0248 l = fread(buffer, 1, sizeof(buffer), f);
0249 buffer[l] = 0;
0250 fclose(f);
0251 }
0252 return l;
0253 }
0254
0255
0256
0257
0258 static int store_size(char *buffer, unsigned long value)
0259 {
0260 unsigned long divisor = 1;
0261 char trailer = 0;
0262 int n;
0263
0264 if (!show_bytes) {
0265 if (value > 1000000000UL) {
0266 divisor = 100000000UL;
0267 trailer = 'G';
0268 } else if (value > 1000000UL) {
0269 divisor = 100000UL;
0270 trailer = 'M';
0271 } else if (value > 1000UL) {
0272 divisor = 100;
0273 trailer = 'K';
0274 }
0275 }
0276
0277 value /= divisor;
0278 n = sprintf(buffer, "%ld",value);
0279 if (trailer) {
0280 buffer[n] = trailer;
0281 n++;
0282 buffer[n] = 0;
0283 }
0284 if (divisor != 1) {
0285 memmove(buffer + n - 2, buffer + n - 3, 4);
0286 buffer[n-2] = '.';
0287 n++;
0288 }
0289 return n;
0290 }
0291
0292 static void decode_numa_list(int *numa, char *t)
0293 {
0294 int node;
0295 int nr;
0296
0297 memset(numa, 0, MAX_NODES * sizeof(int));
0298
0299 if (!t)
0300 return;
0301
0302 while (*t == 'N') {
0303 t++;
0304 node = strtoul(t, &t, 10);
0305 if (*t == '=') {
0306 t++;
0307 nr = strtoul(t, &t, 10);
0308 numa[node] = nr;
0309 if (node > highest_node)
0310 highest_node = node;
0311 }
0312 while (*t == ' ')
0313 t++;
0314 }
0315 }
0316
0317 static void slab_validate(struct slabinfo *s)
0318 {
0319 if (strcmp(s->name, "*") == 0)
0320 return;
0321
0322 set_obj(s, "validate", 1);
0323 }
0324
0325 static void slab_shrink(struct slabinfo *s)
0326 {
0327 if (strcmp(s->name, "*") == 0)
0328 return;
0329
0330 set_obj(s, "shrink", 1);
0331 }
0332
0333 int line = 0;
0334
0335 static void first_line(void)
0336 {
0337 if (show_activity)
0338 printf("Name Objects Alloc Free"
0339 " %%Fast Fallb O CmpX UL\n");
0340 else
0341 printf("Name Objects Objsize %s "
0342 "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n",
0343 sort_loss ? " Loss" : "Space");
0344 }
0345
0346
0347
0348
0349 static struct aliasinfo *find_one_alias(struct slabinfo *find)
0350 {
0351 struct aliasinfo *a;
0352 struct aliasinfo *best = NULL;
0353
0354 for(a = aliasinfo;a < aliasinfo + aliases; a++) {
0355 if (a->slab == find &&
0356 (!best || strlen(best->name) < strlen(a->name))) {
0357 best = a;
0358 if (strncmp(a->name,"kmall", 5) == 0)
0359 return best;
0360 }
0361 }
0362 return best;
0363 }
0364
0365 static unsigned long slab_size(struct slabinfo *s)
0366 {
0367 return s->slabs * (page_size << s->order);
0368 }
0369
0370 static unsigned long slab_activity(struct slabinfo *s)
0371 {
0372 return s->alloc_fastpath + s->free_fastpath +
0373 s->alloc_slowpath + s->free_slowpath;
0374 }
0375
0376 static unsigned long slab_waste(struct slabinfo *s)
0377 {
0378 return slab_size(s) - s->objects * s->object_size;
0379 }
0380
0381 static void slab_numa(struct slabinfo *s, int mode)
0382 {
0383 int node;
0384
0385 if (strcmp(s->name, "*") == 0)
0386 return;
0387
0388 if (!highest_node) {
0389 printf("\n%s: No NUMA information available.\n", s->name);
0390 return;
0391 }
0392
0393 if (skip_zero && !s->slabs)
0394 return;
0395
0396 if (!line) {
0397 printf("\n%-21s:", mode ? "NUMA nodes" : "Slab");
0398 for(node = 0; node <= highest_node; node++)
0399 printf(" %4d", node);
0400 printf("\n----------------------");
0401 for(node = 0; node <= highest_node; node++)
0402 printf("-----");
0403 printf("\n");
0404 }
0405 printf("%-21s ", mode ? "All slabs" : s->name);
0406 for(node = 0; node <= highest_node; node++) {
0407 char b[20];
0408
0409 store_size(b, s->numa[node]);
0410 printf(" %4s", b);
0411 }
0412 printf("\n");
0413 if (mode) {
0414 printf("%-21s ", "Partial slabs");
0415 for(node = 0; node <= highest_node; node++) {
0416 char b[20];
0417
0418 store_size(b, s->numa_partial[node]);
0419 printf(" %4s", b);
0420 }
0421 printf("\n");
0422 }
0423 line++;
0424 }
0425
0426 static void show_tracking(struct slabinfo *s)
0427 {
0428 printf("\n%s: Kernel object allocation\n", s->name);
0429 printf("-----------------------------------------------------------------------\n");
0430 if (read_debug_slab_obj(s, "alloc_traces"))
0431 printf("%s", buffer);
0432 else if (read_slab_obj(s, "alloc_calls"))
0433 printf("%s", buffer);
0434 else
0435 printf("No Data\n");
0436
0437 printf("\n%s: Kernel object freeing\n", s->name);
0438 printf("------------------------------------------------------------------------\n");
0439 if (read_debug_slab_obj(s, "free_traces"))
0440 printf("%s", buffer);
0441 else if (read_slab_obj(s, "free_calls"))
0442 printf("%s", buffer);
0443 else
0444 printf("No Data\n");
0445
0446 }
0447
0448 static void ops(struct slabinfo *s)
0449 {
0450 if (strcmp(s->name, "*") == 0)
0451 return;
0452
0453 if (read_slab_obj(s, "ops")) {
0454 printf("\n%s: kmem_cache operations\n", s->name);
0455 printf("--------------------------------------------\n");
0456 printf("%s", buffer);
0457 } else
0458 printf("\n%s has no kmem_cache operations\n", s->name);
0459 }
0460
0461 static const char *onoff(int x)
0462 {
0463 if (x)
0464 return "On ";
0465 return "Off";
0466 }
0467
0468 static void slab_stats(struct slabinfo *s)
0469 {
0470 unsigned long total_alloc;
0471 unsigned long total_free;
0472 unsigned long total;
0473
0474 if (!s->alloc_slab)
0475 return;
0476
0477 total_alloc = s->alloc_fastpath + s->alloc_slowpath;
0478 total_free = s->free_fastpath + s->free_slowpath;
0479
0480 if (!total_alloc)
0481 return;
0482
0483 printf("\n");
0484 printf("Slab Perf Counter Alloc Free %%Al %%Fr\n");
0485 printf("--------------------------------------------------\n");
0486 printf("Fastpath %8lu %8lu %3lu %3lu\n",
0487 s->alloc_fastpath, s->free_fastpath,
0488 s->alloc_fastpath * 100 / total_alloc,
0489 total_free ? s->free_fastpath * 100 / total_free : 0);
0490 printf("Slowpath %8lu %8lu %3lu %3lu\n",
0491 total_alloc - s->alloc_fastpath, s->free_slowpath,
0492 (total_alloc - s->alloc_fastpath) * 100 / total_alloc,
0493 total_free ? s->free_slowpath * 100 / total_free : 0);
0494 printf("Page Alloc %8lu %8lu %3lu %3lu\n",
0495 s->alloc_slab, s->free_slab,
0496 s->alloc_slab * 100 / total_alloc,
0497 total_free ? s->free_slab * 100 / total_free : 0);
0498 printf("Add partial %8lu %8lu %3lu %3lu\n",
0499 s->deactivate_to_head + s->deactivate_to_tail,
0500 s->free_add_partial,
0501 (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc,
0502 total_free ? s->free_add_partial * 100 / total_free : 0);
0503 printf("Remove partial %8lu %8lu %3lu %3lu\n",
0504 s->alloc_from_partial, s->free_remove_partial,
0505 s->alloc_from_partial * 100 / total_alloc,
0506 total_free ? s->free_remove_partial * 100 / total_free : 0);
0507
0508 printf("Cpu partial list %8lu %8lu %3lu %3lu\n",
0509 s->cpu_partial_alloc, s->cpu_partial_free,
0510 s->cpu_partial_alloc * 100 / total_alloc,
0511 total_free ? s->cpu_partial_free * 100 / total_free : 0);
0512
0513 printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n",
0514 s->deactivate_remote_frees, s->free_frozen,
0515 s->deactivate_remote_frees * 100 / total_alloc,
0516 total_free ? s->free_frozen * 100 / total_free : 0);
0517
0518 printf("Total %8lu %8lu\n\n", total_alloc, total_free);
0519
0520 if (s->cpuslab_flush)
0521 printf("Flushes %8lu\n", s->cpuslab_flush);
0522
0523 total = s->deactivate_full + s->deactivate_empty +
0524 s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass;
0525
0526 if (total) {
0527 printf("\nSlab Deactivation Occurrences %%\n");
0528 printf("-------------------------------------------------\n");
0529 printf("Slab full %7lu %3lu%%\n",
0530 s->deactivate_full, (s->deactivate_full * 100) / total);
0531 printf("Slab empty %7lu %3lu%%\n",
0532 s->deactivate_empty, (s->deactivate_empty * 100) / total);
0533 printf("Moved to head of partial list %7lu %3lu%%\n",
0534 s->deactivate_to_head, (s->deactivate_to_head * 100) / total);
0535 printf("Moved to tail of partial list %7lu %3lu%%\n",
0536 s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total);
0537 printf("Deactivation bypass %7lu %3lu%%\n",
0538 s->deactivate_bypass, (s->deactivate_bypass * 100) / total);
0539 printf("Refilled from foreign frees %7lu %3lu%%\n",
0540 s->alloc_refill, (s->alloc_refill * 100) / total);
0541 printf("Node mismatch %7lu %3lu%%\n",
0542 s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total);
0543 }
0544
0545 if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) {
0546 printf("\nCmpxchg_double Looping\n------------------------\n");
0547 printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n",
0548 s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail);
0549 }
0550 }
0551
0552 static void report(struct slabinfo *s)
0553 {
0554 if (strcmp(s->name, "*") == 0)
0555 return;
0556
0557 printf("\nSlabcache: %-15s Aliases: %2d Order : %2d Objects: %lu\n",
0558 s->name, s->aliases, s->order, s->objects);
0559 if (s->hwcache_align)
0560 printf("** Hardware cacheline aligned\n");
0561 if (s->cache_dma)
0562 printf("** Memory is allocated in a special DMA zone\n");
0563 if (s->destroy_by_rcu)
0564 printf("** Slabs are destroyed via RCU\n");
0565 if (s->reclaim_account)
0566 printf("** Reclaim accounting active\n");
0567
0568 printf("\nSizes (bytes) Slabs Debug Memory\n");
0569 printf("------------------------------------------------------------------------\n");
0570 printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n",
0571 s->object_size, s->slabs, onoff(s->sanity_checks),
0572 s->slabs * (page_size << s->order));
0573 printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n",
0574 s->slab_size, s->slabs - s->partial - s->cpu_slabs,
0575 onoff(s->red_zone), s->objects * s->object_size);
0576 printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n",
0577 page_size << s->order, s->partial, onoff(s->poison),
0578 s->slabs * (page_size << s->order) - s->objects * s->object_size);
0579 printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n",
0580 s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user),
0581 (s->slab_size - s->object_size) * s->objects);
0582 printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n",
0583 s->align, s->objs_per_slab, onoff(s->trace),
0584 ((page_size << s->order) - s->objs_per_slab * s->slab_size) *
0585 s->slabs);
0586
0587 ops(s);
0588 show_tracking(s);
0589 slab_numa(s, 1);
0590 slab_stats(s);
0591 }
0592
0593 static void slabcache(struct slabinfo *s)
0594 {
0595 char size_str[20];
0596 char dist_str[40];
0597 char flags[20];
0598 char *p = flags;
0599
0600 if (strcmp(s->name, "*") == 0)
0601 return;
0602
0603 if (unreclaim_only && s->reclaim_account)
0604 return;
0605
0606 if (actual_slabs == 1) {
0607 report(s);
0608 return;
0609 }
0610
0611 if (skip_zero && !show_empty && !s->slabs)
0612 return;
0613
0614 if (show_empty && s->slabs)
0615 return;
0616
0617 if (sort_loss == 0)
0618 store_size(size_str, slab_size(s));
0619 else
0620 store_size(size_str, slab_waste(s));
0621 snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs,
0622 s->partial, s->cpu_slabs);
0623
0624 if (!line++)
0625 first_line();
0626
0627 if (s->aliases)
0628 *p++ = '*';
0629 if (s->cache_dma)
0630 *p++ = 'd';
0631 if (s->hwcache_align)
0632 *p++ = 'A';
0633 if (s->poison)
0634 *p++ = 'P';
0635 if (s->reclaim_account)
0636 *p++ = 'a';
0637 if (s->red_zone)
0638 *p++ = 'Z';
0639 if (s->sanity_checks)
0640 *p++ = 'F';
0641 if (s->store_user)
0642 *p++ = 'U';
0643 if (s->trace)
0644 *p++ = 'T';
0645
0646 *p = 0;
0647 if (show_activity) {
0648 unsigned long total_alloc;
0649 unsigned long total_free;
0650
0651 total_alloc = s->alloc_fastpath + s->alloc_slowpath;
0652 total_free = s->free_fastpath + s->free_slowpath;
0653
0654 printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n",
0655 s->name, s->objects,
0656 total_alloc, total_free,
0657 total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0,
0658 total_free ? (s->free_fastpath * 100 / total_free) : 0,
0659 s->order_fallback, s->order, s->cmpxchg_double_fail,
0660 s->cmpxchg_double_cpu_fail);
0661 } else {
0662 printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n",
0663 s->name, s->objects, s->object_size, size_str, dist_str,
0664 s->objs_per_slab, s->order,
0665 s->slabs ? (s->partial * 100) / s->slabs : 100,
0666 s->slabs ? (s->objects * s->object_size * 100) /
0667 (s->slabs * (page_size << s->order)) : 100,
0668 flags);
0669 }
0670 }
0671
0672
0673
0674
0675 static int debug_opt_scan(char *opt)
0676 {
0677 if (!opt || !opt[0] || strcmp(opt, "-") == 0)
0678 return 1;
0679
0680 if (strcasecmp(opt, "a") == 0) {
0681 sanity = 1;
0682 poison = 1;
0683 redzone = 1;
0684 tracking = 1;
0685 return 1;
0686 }
0687
0688 for ( ; *opt; opt++)
0689 switch (*opt) {
0690 case 'F' : case 'f':
0691 if (sanity)
0692 return 0;
0693 sanity = 1;
0694 break;
0695 case 'P' : case 'p':
0696 if (poison)
0697 return 0;
0698 poison = 1;
0699 break;
0700
0701 case 'Z' : case 'z':
0702 if (redzone)
0703 return 0;
0704 redzone = 1;
0705 break;
0706
0707 case 'U' : case 'u':
0708 if (tracking)
0709 return 0;
0710 tracking = 1;
0711 break;
0712
0713 case 'T' : case 't':
0714 if (tracing)
0715 return 0;
0716 tracing = 1;
0717 break;
0718 default:
0719 return 0;
0720 }
0721 return 1;
0722 }
0723
0724 static int slab_empty(struct slabinfo *s)
0725 {
0726 if (s->objects > 0)
0727 return 0;
0728
0729
0730
0731
0732
0733 if (s->slabs != 0)
0734 set_obj(s, "shrink", 1);
0735
0736 return 1;
0737 }
0738
0739 static void slab_debug(struct slabinfo *s)
0740 {
0741 if (strcmp(s->name, "*") == 0)
0742 return;
0743
0744 if (sanity && !s->sanity_checks) {
0745 set_obj(s, "sanity_checks", 1);
0746 }
0747 if (!sanity && s->sanity_checks) {
0748 if (slab_empty(s))
0749 set_obj(s, "sanity_checks", 0);
0750 else
0751 fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name);
0752 }
0753 if (redzone && !s->red_zone) {
0754 if (slab_empty(s))
0755 set_obj(s, "red_zone", 1);
0756 else
0757 fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name);
0758 }
0759 if (!redzone && s->red_zone) {
0760 if (slab_empty(s))
0761 set_obj(s, "red_zone", 0);
0762 else
0763 fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name);
0764 }
0765 if (poison && !s->poison) {
0766 if (slab_empty(s))
0767 set_obj(s, "poison", 1);
0768 else
0769 fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name);
0770 }
0771 if (!poison && s->poison) {
0772 if (slab_empty(s))
0773 set_obj(s, "poison", 0);
0774 else
0775 fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name);
0776 }
0777 if (tracking && !s->store_user) {
0778 if (slab_empty(s))
0779 set_obj(s, "store_user", 1);
0780 else
0781 fprintf(stderr, "%s not empty cannot enable tracking\n", s->name);
0782 }
0783 if (!tracking && s->store_user) {
0784 if (slab_empty(s))
0785 set_obj(s, "store_user", 0);
0786 else
0787 fprintf(stderr, "%s not empty cannot disable tracking\n", s->name);
0788 }
0789 if (tracing && !s->trace) {
0790 if (slabs == 1)
0791 set_obj(s, "trace", 1);
0792 else
0793 fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name);
0794 }
0795 if (!tracing && s->trace)
0796 set_obj(s, "trace", 1);
0797 }
0798
0799 static void totals(void)
0800 {
0801 struct slabinfo *s;
0802
0803 int used_slabs = 0;
0804 char b1[20], b2[20], b3[20], b4[20];
0805 unsigned long long max = 1ULL << 63;
0806
0807
0808 unsigned long long min_objsize = max, max_objsize = 0, avg_objsize;
0809
0810
0811 unsigned long long min_partial = max, max_partial = 0,
0812 avg_partial, total_partial = 0;
0813
0814
0815 unsigned long long min_slabs = max, max_slabs = 0,
0816 avg_slabs, total_slabs = 0;
0817
0818
0819 unsigned long long min_size = max, max_size = 0,
0820 avg_size, total_size = 0;
0821
0822
0823 unsigned long long min_used = max, max_used = 0,
0824 avg_used, total_used = 0;
0825
0826
0827 unsigned long long min_waste = max, max_waste = 0,
0828 avg_waste, total_waste = 0;
0829
0830 unsigned long long min_objects = max, max_objects = 0,
0831 avg_objects, total_objects = 0;
0832
0833 unsigned long long min_objwaste = max,
0834 max_objwaste = 0, avg_objwaste,
0835 total_objwaste = 0;
0836
0837
0838 unsigned long long min_memobj = max,
0839 max_memobj = 0, avg_memobj,
0840 total_objsize = 0;
0841
0842
0843 unsigned long min_ppart = 100, max_ppart = 0,
0844 avg_ppart, total_ppart = 0;
0845
0846
0847 unsigned long min_partobj = max, max_partobj = 0,
0848 avg_partobj, total_partobj = 0;
0849
0850
0851 unsigned long min_ppartobj = 100, max_ppartobj = 0,
0852 avg_ppartobj, total_ppartobj = 0;
0853
0854
0855 for (s = slabinfo; s < slabinfo + slabs; s++) {
0856 unsigned long long size;
0857 unsigned long used;
0858 unsigned long long wasted;
0859 unsigned long long objwaste;
0860 unsigned long percentage_partial_slabs;
0861 unsigned long percentage_partial_objs;
0862
0863 if (!s->slabs || !s->objects)
0864 continue;
0865
0866 used_slabs++;
0867
0868 size = slab_size(s);
0869 used = s->objects * s->object_size;
0870 wasted = size - used;
0871 objwaste = s->slab_size - s->object_size;
0872
0873 percentage_partial_slabs = s->partial * 100 / s->slabs;
0874 if (percentage_partial_slabs > 100)
0875 percentage_partial_slabs = 100;
0876
0877 percentage_partial_objs = s->objects_partial * 100
0878 / s->objects;
0879
0880 if (percentage_partial_objs > 100)
0881 percentage_partial_objs = 100;
0882
0883 if (s->object_size < min_objsize)
0884 min_objsize = s->object_size;
0885 if (s->partial < min_partial)
0886 min_partial = s->partial;
0887 if (s->slabs < min_slabs)
0888 min_slabs = s->slabs;
0889 if (size < min_size)
0890 min_size = size;
0891 if (wasted < min_waste)
0892 min_waste = wasted;
0893 if (objwaste < min_objwaste)
0894 min_objwaste = objwaste;
0895 if (s->objects < min_objects)
0896 min_objects = s->objects;
0897 if (used < min_used)
0898 min_used = used;
0899 if (s->objects_partial < min_partobj)
0900 min_partobj = s->objects_partial;
0901 if (percentage_partial_slabs < min_ppart)
0902 min_ppart = percentage_partial_slabs;
0903 if (percentage_partial_objs < min_ppartobj)
0904 min_ppartobj = percentage_partial_objs;
0905 if (s->slab_size < min_memobj)
0906 min_memobj = s->slab_size;
0907
0908 if (s->object_size > max_objsize)
0909 max_objsize = s->object_size;
0910 if (s->partial > max_partial)
0911 max_partial = s->partial;
0912 if (s->slabs > max_slabs)
0913 max_slabs = s->slabs;
0914 if (size > max_size)
0915 max_size = size;
0916 if (wasted > max_waste)
0917 max_waste = wasted;
0918 if (objwaste > max_objwaste)
0919 max_objwaste = objwaste;
0920 if (s->objects > max_objects)
0921 max_objects = s->objects;
0922 if (used > max_used)
0923 max_used = used;
0924 if (s->objects_partial > max_partobj)
0925 max_partobj = s->objects_partial;
0926 if (percentage_partial_slabs > max_ppart)
0927 max_ppart = percentage_partial_slabs;
0928 if (percentage_partial_objs > max_ppartobj)
0929 max_ppartobj = percentage_partial_objs;
0930 if (s->slab_size > max_memobj)
0931 max_memobj = s->slab_size;
0932
0933 total_partial += s->partial;
0934 total_slabs += s->slabs;
0935 total_size += size;
0936 total_waste += wasted;
0937
0938 total_objects += s->objects;
0939 total_used += used;
0940 total_partobj += s->objects_partial;
0941 total_ppart += percentage_partial_slabs;
0942 total_ppartobj += percentage_partial_objs;
0943
0944 total_objwaste += s->objects * objwaste;
0945 total_objsize += s->objects * s->slab_size;
0946 }
0947
0948 if (!total_objects) {
0949 printf("No objects\n");
0950 return;
0951 }
0952 if (!used_slabs) {
0953 printf("No slabs\n");
0954 return;
0955 }
0956
0957
0958 avg_partial = total_partial / used_slabs;
0959 avg_slabs = total_slabs / used_slabs;
0960 avg_size = total_size / used_slabs;
0961 avg_waste = total_waste / used_slabs;
0962
0963 avg_objects = total_objects / used_slabs;
0964 avg_used = total_used / used_slabs;
0965 avg_partobj = total_partobj / used_slabs;
0966 avg_ppart = total_ppart / used_slabs;
0967 avg_ppartobj = total_ppartobj / used_slabs;
0968
0969
0970 avg_objsize = total_used / total_objects;
0971 avg_objwaste = total_objwaste / total_objects;
0972 avg_partobj = total_partobj * 100 / total_objects;
0973 avg_memobj = total_objsize / total_objects;
0974
0975 printf("Slabcache Totals\n");
0976 printf("----------------\n");
0977 printf("Slabcaches : %15d Aliases : %11d->%-3d Active: %3d\n",
0978 slabs, aliases, alias_targets, used_slabs);
0979
0980 store_size(b1, total_size);store_size(b2, total_waste);
0981 store_size(b3, total_waste * 100 / total_used);
0982 printf("Memory used: %15s # Loss : %15s MRatio:%6s%%\n", b1, b2, b3);
0983
0984 store_size(b1, total_objects);store_size(b2, total_partobj);
0985 store_size(b3, total_partobj * 100 / total_objects);
0986 printf("# Objects : %15s # PartObj: %15s ORatio:%6s%%\n", b1, b2, b3);
0987
0988 printf("\n");
0989 printf("Per Cache Average "
0990 "Min Max Total\n");
0991 printf("---------------------------------------"
0992 "-------------------------------------\n");
0993
0994 store_size(b1, avg_objects);store_size(b2, min_objects);
0995 store_size(b3, max_objects);store_size(b4, total_objects);
0996 printf("#Objects %15s %15s %15s %15s\n",
0997 b1, b2, b3, b4);
0998
0999 store_size(b1, avg_slabs);store_size(b2, min_slabs);
1000 store_size(b3, max_slabs);store_size(b4, total_slabs);
1001 printf("#Slabs %15s %15s %15s %15s\n",
1002 b1, b2, b3, b4);
1003
1004 store_size(b1, avg_partial);store_size(b2, min_partial);
1005 store_size(b3, max_partial);store_size(b4, total_partial);
1006 printf("#PartSlab %15s %15s %15s %15s\n",
1007 b1, b2, b3, b4);
1008 store_size(b1, avg_ppart);store_size(b2, min_ppart);
1009 store_size(b3, max_ppart);
1010 store_size(b4, total_partial * 100 / total_slabs);
1011 printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n",
1012 b1, b2, b3, b4);
1013
1014 store_size(b1, avg_partobj);store_size(b2, min_partobj);
1015 store_size(b3, max_partobj);
1016 store_size(b4, total_partobj);
1017 printf("PartObjs %15s %15s %15s %15s\n",
1018 b1, b2, b3, b4);
1019
1020 store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj);
1021 store_size(b3, max_ppartobj);
1022 store_size(b4, total_partobj * 100 / total_objects);
1023 printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n",
1024 b1, b2, b3, b4);
1025
1026 store_size(b1, avg_size);store_size(b2, min_size);
1027 store_size(b3, max_size);store_size(b4, total_size);
1028 printf("Memory %15s %15s %15s %15s\n",
1029 b1, b2, b3, b4);
1030
1031 store_size(b1, avg_used);store_size(b2, min_used);
1032 store_size(b3, max_used);store_size(b4, total_used);
1033 printf("Used %15s %15s %15s %15s\n",
1034 b1, b2, b3, b4);
1035
1036 store_size(b1, avg_waste);store_size(b2, min_waste);
1037 store_size(b3, max_waste);store_size(b4, total_waste);
1038 printf("Loss %15s %15s %15s %15s\n",
1039 b1, b2, b3, b4);
1040
1041 printf("\n");
1042 printf("Per Object Average "
1043 "Min Max\n");
1044 printf("---------------------------------------"
1045 "--------------------\n");
1046
1047 store_size(b1, avg_memobj);store_size(b2, min_memobj);
1048 store_size(b3, max_memobj);
1049 printf("Memory %15s %15s %15s\n",
1050 b1, b2, b3);
1051 store_size(b1, avg_objsize);store_size(b2, min_objsize);
1052 store_size(b3, max_objsize);
1053 printf("User %15s %15s %15s\n",
1054 b1, b2, b3);
1055
1056 store_size(b1, avg_objwaste);store_size(b2, min_objwaste);
1057 store_size(b3, max_objwaste);
1058 printf("Loss %15s %15s %15s\n",
1059 b1, b2, b3);
1060 }
1061
1062 static void sort_slabs(void)
1063 {
1064 struct slabinfo *s1,*s2;
1065
1066 for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) {
1067 for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) {
1068 int result;
1069
1070 if (sort_size) {
1071 if (slab_size(s1) == slab_size(s2))
1072 result = strcasecmp(s1->name, s2->name);
1073 else
1074 result = slab_size(s1) < slab_size(s2);
1075 } else if (sort_active) {
1076 if (slab_activity(s1) == slab_activity(s2))
1077 result = strcasecmp(s1->name, s2->name);
1078 else
1079 result = slab_activity(s1) < slab_activity(s2);
1080 } else if (sort_loss) {
1081 if (slab_waste(s1) == slab_waste(s2))
1082 result = strcasecmp(s1->name, s2->name);
1083 else
1084 result = slab_waste(s1) < slab_waste(s2);
1085 } else if (sort_partial) {
1086 if (s1->partial == s2->partial)
1087 result = strcasecmp(s1->name, s2->name);
1088 else
1089 result = s1->partial < s2->partial;
1090 } else
1091 result = strcasecmp(s1->name, s2->name);
1092
1093 if (show_inverted)
1094 result = -result;
1095
1096 if (result > 0) {
1097 struct slabinfo t;
1098
1099 memcpy(&t, s1, sizeof(struct slabinfo));
1100 memcpy(s1, s2, sizeof(struct slabinfo));
1101 memcpy(s2, &t, sizeof(struct slabinfo));
1102 }
1103 }
1104 }
1105 }
1106
1107 static void sort_aliases(void)
1108 {
1109 struct aliasinfo *a1,*a2;
1110
1111 for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) {
1112 for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) {
1113 char *n1, *n2;
1114
1115 n1 = a1->name;
1116 n2 = a2->name;
1117 if (show_alias && !show_inverted) {
1118 n1 = a1->ref;
1119 n2 = a2->ref;
1120 }
1121 if (strcasecmp(n1, n2) > 0) {
1122 struct aliasinfo t;
1123
1124 memcpy(&t, a1, sizeof(struct aliasinfo));
1125 memcpy(a1, a2, sizeof(struct aliasinfo));
1126 memcpy(a2, &t, sizeof(struct aliasinfo));
1127 }
1128 }
1129 }
1130 }
1131
1132 static void link_slabs(void)
1133 {
1134 struct aliasinfo *a;
1135 struct slabinfo *s;
1136
1137 for (a = aliasinfo; a < aliasinfo + aliases; a++) {
1138
1139 for (s = slabinfo; s < slabinfo + slabs; s++)
1140 if (strcmp(a->ref, s->name) == 0) {
1141 a->slab = s;
1142 s->refs++;
1143 break;
1144 }
1145 if (s == slabinfo + slabs)
1146 fatal("Unresolved alias %s\n", a->ref);
1147 }
1148 }
1149
1150 static void alias(void)
1151 {
1152 struct aliasinfo *a;
1153 char *active = NULL;
1154
1155 sort_aliases();
1156 link_slabs();
1157
1158 for(a = aliasinfo; a < aliasinfo + aliases; a++) {
1159
1160 if (!show_single_ref && a->slab->refs == 1)
1161 continue;
1162
1163 if (!show_inverted) {
1164 if (active) {
1165 if (strcmp(a->slab->name, active) == 0) {
1166 printf(" %s", a->name);
1167 continue;
1168 }
1169 }
1170 printf("\n%-12s <- %s", a->slab->name, a->name);
1171 active = a->slab->name;
1172 }
1173 else
1174 printf("%-15s -> %s\n", a->name, a->slab->name);
1175 }
1176 if (active)
1177 printf("\n");
1178 }
1179
1180
1181 static void rename_slabs(void)
1182 {
1183 struct slabinfo *s;
1184 struct aliasinfo *a;
1185
1186 for (s = slabinfo; s < slabinfo + slabs; s++) {
1187 if (*s->name != ':')
1188 continue;
1189
1190 if (s->refs > 1 && !show_first_alias)
1191 continue;
1192
1193 a = find_one_alias(s);
1194
1195 if (a)
1196 s->name = a->name;
1197 else {
1198 s->name = "*";
1199 actual_slabs--;
1200 }
1201 }
1202 }
1203
1204 static int slab_mismatch(char *slab)
1205 {
1206 return regexec(&pattern, slab, 0, NULL, 0);
1207 }
1208
1209 static void read_slab_dir(void)
1210 {
1211 DIR *dir;
1212 struct dirent *de;
1213 struct slabinfo *slab = slabinfo;
1214 struct aliasinfo *alias = aliasinfo;
1215 char *p;
1216 char *t;
1217 int count;
1218
1219 if (chdir("/sys/kernel/slab") && chdir("/sys/slab"))
1220 fatal("SYSFS support for SLUB not active\n");
1221
1222 dir = opendir(".");
1223 while ((de = readdir(dir))) {
1224 if (de->d_name[0] == '.' ||
1225 (de->d_name[0] != ':' && slab_mismatch(de->d_name)))
1226 continue;
1227 switch (de->d_type) {
1228 case DT_LNK:
1229 alias->name = strdup(de->d_name);
1230 count = readlink(de->d_name, buffer, sizeof(buffer)-1);
1231
1232 if (count < 0)
1233 fatal("Cannot read symlink %s\n", de->d_name);
1234
1235 buffer[count] = 0;
1236 p = buffer + count;
1237 while (p > buffer && p[-1] != '/')
1238 p--;
1239 alias->ref = strdup(p);
1240 alias++;
1241 break;
1242 case DT_DIR:
1243 if (chdir(de->d_name))
1244 fatal("Unable to access slab %s\n", slab->name);
1245 slab->name = strdup(de->d_name);
1246 slab->alias = 0;
1247 slab->refs = 0;
1248 slab->aliases = get_obj("aliases");
1249 slab->align = get_obj("align");
1250 slab->cache_dma = get_obj("cache_dma");
1251 slab->cpu_slabs = get_obj("cpu_slabs");
1252 slab->destroy_by_rcu = get_obj("destroy_by_rcu");
1253 slab->hwcache_align = get_obj("hwcache_align");
1254 slab->object_size = get_obj("object_size");
1255 slab->objects = get_obj("objects");
1256 slab->objects_partial = get_obj("objects_partial");
1257 slab->objects_total = get_obj("objects_total");
1258 slab->objs_per_slab = get_obj("objs_per_slab");
1259 slab->order = get_obj("order");
1260 slab->partial = get_obj("partial");
1261 slab->partial = get_obj_and_str("partial", &t);
1262 decode_numa_list(slab->numa_partial, t);
1263 free(t);
1264 slab->poison = get_obj("poison");
1265 slab->reclaim_account = get_obj("reclaim_account");
1266 slab->red_zone = get_obj("red_zone");
1267 slab->sanity_checks = get_obj("sanity_checks");
1268 slab->slab_size = get_obj("slab_size");
1269 slab->slabs = get_obj_and_str("slabs", &t);
1270 decode_numa_list(slab->numa, t);
1271 free(t);
1272 slab->store_user = get_obj("store_user");
1273 slab->trace = get_obj("trace");
1274 slab->alloc_fastpath = get_obj("alloc_fastpath");
1275 slab->alloc_slowpath = get_obj("alloc_slowpath");
1276 slab->free_fastpath = get_obj("free_fastpath");
1277 slab->free_slowpath = get_obj("free_slowpath");
1278 slab->free_frozen= get_obj("free_frozen");
1279 slab->free_add_partial = get_obj("free_add_partial");
1280 slab->free_remove_partial = get_obj("free_remove_partial");
1281 slab->alloc_from_partial = get_obj("alloc_from_partial");
1282 slab->alloc_slab = get_obj("alloc_slab");
1283 slab->alloc_refill = get_obj("alloc_refill");
1284 slab->free_slab = get_obj("free_slab");
1285 slab->cpuslab_flush = get_obj("cpuslab_flush");
1286 slab->deactivate_full = get_obj("deactivate_full");
1287 slab->deactivate_empty = get_obj("deactivate_empty");
1288 slab->deactivate_to_head = get_obj("deactivate_to_head");
1289 slab->deactivate_to_tail = get_obj("deactivate_to_tail");
1290 slab->deactivate_remote_frees = get_obj("deactivate_remote_frees");
1291 slab->order_fallback = get_obj("order_fallback");
1292 slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail");
1293 slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail");
1294 slab->cpu_partial_alloc = get_obj("cpu_partial_alloc");
1295 slab->cpu_partial_free = get_obj("cpu_partial_free");
1296 slab->alloc_node_mismatch = get_obj("alloc_node_mismatch");
1297 slab->deactivate_bypass = get_obj("deactivate_bypass");
1298 chdir("..");
1299 if (slab->name[0] == ':')
1300 alias_targets++;
1301 slab++;
1302 break;
1303 default :
1304 fatal("Unknown file type %lx\n", de->d_type);
1305 }
1306 }
1307 closedir(dir);
1308 slabs = slab - slabinfo;
1309 actual_slabs = slabs;
1310 aliases = alias - aliasinfo;
1311 if (slabs > MAX_SLABS)
1312 fatal("Too many slabs\n");
1313 if (aliases > MAX_ALIASES)
1314 fatal("Too many aliases\n");
1315 }
1316
1317 static void output_slabs(void)
1318 {
1319 struct slabinfo *slab;
1320 int lines = output_lines;
1321
1322 for (slab = slabinfo; (slab < slabinfo + slabs) &&
1323 lines != 0; slab++) {
1324
1325 if (slab->alias)
1326 continue;
1327
1328 if (lines != -1)
1329 lines--;
1330
1331 if (show_numa)
1332 slab_numa(slab, 0);
1333 else if (show_track)
1334 show_tracking(slab);
1335 else if (validate)
1336 slab_validate(slab);
1337 else if (shrink)
1338 slab_shrink(slab);
1339 else if (set_debug)
1340 slab_debug(slab);
1341 else if (show_ops)
1342 ops(slab);
1343 else if (show_slab)
1344 slabcache(slab);
1345 else if (show_report)
1346 report(slab);
1347 }
1348 }
1349
1350 static void _xtotals(char *heading, char *underline,
1351 int loss, int size, int partial)
1352 {
1353 printf("%s%s", heading, underline);
1354 line = 0;
1355 sort_loss = loss;
1356 sort_size = size;
1357 sort_partial = partial;
1358 sort_slabs();
1359 output_slabs();
1360 }
1361
1362 static void xtotals(void)
1363 {
1364 char *heading, *underline;
1365
1366 totals();
1367
1368 link_slabs();
1369 rename_slabs();
1370
1371 heading = "\nSlabs sorted by size\n";
1372 underline = "--------------------\n";
1373 _xtotals(heading, underline, 0, 1, 0);
1374
1375 heading = "\nSlabs sorted by loss\n";
1376 underline = "--------------------\n";
1377 _xtotals(heading, underline, 1, 0, 0);
1378
1379 heading = "\nSlabs sorted by number of partial slabs\n";
1380 underline = "---------------------------------------\n";
1381 _xtotals(heading, underline, 0, 0, 1);
1382
1383 printf("\n");
1384 }
1385
1386 struct option opts[] = {
1387 { "aliases", no_argument, NULL, 'a' },
1388 { "activity", no_argument, NULL, 'A' },
1389 { "Bytes", no_argument, NULL, 'B'},
1390 { "debug", optional_argument, NULL, 'd' },
1391 { "display-activity", no_argument, NULL, 'D' },
1392 { "empty", no_argument, NULL, 'e' },
1393 { "first-alias", no_argument, NULL, 'f' },
1394 { "help", no_argument, NULL, 'h' },
1395 { "inverted", no_argument, NULL, 'i'},
1396 { "slabs", no_argument, NULL, 'l' },
1397 { "Loss", no_argument, NULL, 'L'},
1398 { "numa", no_argument, NULL, 'n' },
1399 { "lines", required_argument, NULL, 'N'},
1400 { "ops", no_argument, NULL, 'o' },
1401 { "partial", no_argument, NULL, 'p'},
1402 { "report", no_argument, NULL, 'r' },
1403 { "shrink", no_argument, NULL, 's' },
1404 { "Size", no_argument, NULL, 'S'},
1405 { "tracking", no_argument, NULL, 't'},
1406 { "Totals", no_argument, NULL, 'T'},
1407 { "Unreclaim", no_argument, NULL, 'U'},
1408 { "validate", no_argument, NULL, 'v' },
1409 { "Xtotals", no_argument, NULL, 'X'},
1410 { "zero", no_argument, NULL, 'z' },
1411 { "1ref", no_argument, NULL, '1'},
1412 { NULL, 0, NULL, 0 }
1413 };
1414
1415 int main(int argc, char *argv[])
1416 {
1417 int c;
1418 int err;
1419 char *pattern_source;
1420
1421 page_size = getpagesize();
1422
1423 while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1",
1424 opts, NULL)) != -1)
1425 switch (c) {
1426 case 'a':
1427 show_alias = 1;
1428 break;
1429 case 'A':
1430 sort_active = 1;
1431 break;
1432 case 'B':
1433 show_bytes = 1;
1434 break;
1435 case 'd':
1436 set_debug = 1;
1437 if (!debug_opt_scan(optarg))
1438 fatal("Invalid debug option '%s'\n", optarg);
1439 break;
1440 case 'D':
1441 show_activity = 1;
1442 break;
1443 case 'e':
1444 show_empty = 1;
1445 break;
1446 case 'f':
1447 show_first_alias = 1;
1448 break;
1449 case 'h':
1450 usage();
1451 return 0;
1452 case 'i':
1453 show_inverted = 1;
1454 break;
1455 case 'l':
1456 show_slab = 1;
1457 break;
1458 case 'L':
1459 sort_loss = 1;
1460 break;
1461 case 'n':
1462 show_numa = 1;
1463 break;
1464 case 'N':
1465 if (optarg) {
1466 output_lines = atoi(optarg);
1467 if (output_lines < 1)
1468 output_lines = 1;
1469 }
1470 break;
1471 case 'o':
1472 show_ops = 1;
1473 break;
1474 case 'r':
1475 show_report = 1;
1476 break;
1477 case 'P':
1478 sort_partial = 1;
1479 break;
1480 case 's':
1481 shrink = 1;
1482 break;
1483 case 'S':
1484 sort_size = 1;
1485 break;
1486 case 't':
1487 show_track = 1;
1488 break;
1489 case 'T':
1490 show_totals = 1;
1491 break;
1492 case 'U':
1493 unreclaim_only = 1;
1494 break;
1495 case 'v':
1496 validate = 1;
1497 break;
1498 case 'X':
1499 if (output_lines == -1)
1500 output_lines = 1;
1501 extended_totals = 1;
1502 show_bytes = 1;
1503 break;
1504 case 'z':
1505 skip_zero = 0;
1506 break;
1507 case '1':
1508 show_single_ref = 1;
1509 break;
1510 default:
1511 fatal("%s: Invalid option '%c'\n", argv[0], optopt);
1512
1513 }
1514
1515 if (!show_slab && !show_alias && !show_track && !show_report
1516 && !validate && !shrink && !set_debug && !show_ops)
1517 show_slab = 1;
1518
1519 if (argc > optind)
1520 pattern_source = argv[optind];
1521 else
1522 pattern_source = ".*";
1523
1524 err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB);
1525 if (err)
1526 fatal("%s: Invalid pattern '%s' code %d\n",
1527 argv[0], pattern_source, err);
1528 read_slab_dir();
1529 if (show_alias) {
1530 alias();
1531 } else if (extended_totals) {
1532 xtotals();
1533 } else if (show_totals) {
1534 totals();
1535 } else {
1536 link_slabs();
1537 rename_slabs();
1538 sort_slabs();
1539 output_slabs();
1540 }
1541 return 0;
1542 }
