1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2013 Joyent, Inc. All rights reserved.
  25  */
  26 
  27 #include <mdb/mdb_param.h>
  28 #include <mdb/mdb_modapi.h>
  29 #include <mdb/mdb_ks.h>
  30 #include <mdb/mdb_ctf.h>
  31 
  32 #include <sys/types.h>
  33 #include <sys/thread.h>
  34 #include <sys/session.h>
  35 #include <sys/user.h>
  36 #include <sys/proc.h>
  37 #include <sys/var.h>
  38 #include <sys/t_lock.h>
  39 #include <sys/callo.h>
  40 #include <sys/priocntl.h>
  41 #include <sys/class.h>
  42 #include <sys/regset.h>
  43 #include <sys/stack.h>
  44 #include <sys/cpuvar.h>
  45 #include <sys/vnode.h>
  46 #include <sys/vfs.h>
  47 #include <sys/flock_impl.h>
  48 #include <sys/kmem_impl.h>
  49 #include <sys/vmem_impl.h>
  50 #include <sys/kstat.h>
  51 #include <sys/dditypes.h>
  52 #include <sys/ddi_impldefs.h>
  53 #include <sys/sysmacros.h>
  54 #include <sys/sysconf.h>
  55 #include <sys/task.h>
  56 #include <sys/project.h>
  57 #include <sys/errorq_impl.h>
  58 #include <sys/cred_impl.h>
  59 #include <sys/zone.h>
  60 #include <sys/panic.h>
  61 #include <regex.h>
  62 #include <sys/port_impl.h>
  63 
  64 #include "avl.h"
  65 #include "bio.h"
  66 #include "bitset.h"
  67 #include "combined.h"
  68 #include "contract.h"
  69 #include "cpupart_mdb.h"
  70 #include "cred.h"
  71 #include "ctxop.h"
  72 #include "cyclic.h"
  73 #include "damap.h"
  74 #include "ddi_periodic.h"
  75 #include "devinfo.h"
  76 #include "findstack.h"
  77 #include "fm.h"
  78 #include "group.h"
  79 #include "irm.h"
  80 #include "kgrep.h"
  81 #include "kmem.h"
  82 #include "ldi.h"
  83 #include "leaky.h"
  84 #include "lgrp.h"
  85 #include "list.h"
  86 #include "log.h"
  87 #include "mdi.h"
  88 #include "memory.h"
  89 #include "mmd.h"
  90 #include "modhash.h"
  91 #include "ndievents.h"
  92 #include "net.h"
  93 #include "netstack.h"
  94 #include "nvpair.h"
  95 #include "pg.h"
  96 #include "rctl.h"
  97 #include "sobj.h"
  98 #include "streams.h"
  99 #include "sysevent.h"
 100 #include "taskq.h"
 101 #include "thread.h"
 102 #include "tsd.h"
 103 #include "tsol.h"
 104 #include "typegraph.h"
 105 #include "vfs.h"
 106 #include "zone.h"
 107 #include "hotplug.h"
 108 
 109 /*
 110  * Surely this is defined somewhere...
 111  */
 112 #define NINTR           16
 113 
 114 #ifndef STACK_BIAS
 115 #define STACK_BIAS      0
 116 #endif
 117 
 118 static char
 119 pstat2ch(uchar_t state)
 120 {
 121         switch (state) {
 122                 case SSLEEP: return ('S');
 123                 case SRUN: return ('R');
 124                 case SZOMB: return ('Z');
 125                 case SIDL: return ('I');
 126                 case SONPROC: return ('O');
 127                 case SSTOP: return ('T');
 128                 case SWAIT: return ('W');
 129                 default: return ('?');
 130         }
 131 }
 132 
 133 #define PS_PRTTHREADS   0x1
 134 #define PS_PRTLWPS      0x2
 135 #define PS_PSARGS       0x4
 136 #define PS_TASKS        0x8
 137 #define PS_PROJECTS     0x10
 138 #define PS_ZONES        0x20
 139 
 140 static int
 141 ps_threadprint(uintptr_t addr, const void *data, void *private)
 142 {
 143         const kthread_t *t = (const kthread_t *)data;
 144         uint_t prt_flags = *((uint_t *)private);
 145 
 146         static const mdb_bitmask_t t_state_bits[] = {
 147                 { "TS_FREE",    UINT_MAX,       TS_FREE         },
 148                 { "TS_SLEEP",   TS_SLEEP,       TS_SLEEP        },
 149                 { "TS_RUN",     TS_RUN,         TS_RUN          },
 150                 { "TS_ONPROC",  TS_ONPROC,      TS_ONPROC       },
 151                 { "TS_ZOMB",    TS_ZOMB,        TS_ZOMB         },
 152                 { "TS_STOPPED", TS_STOPPED,     TS_STOPPED      },
 153                 { "TS_WAIT",    TS_WAIT,        TS_WAIT         },
 154                 { NULL,         0,              0               }
 155         };
 156 
 157         if (prt_flags & PS_PRTTHREADS)
 158                 mdb_printf("\tT  %?a <%b>\n", addr, t->t_state, t_state_bits);
 159 
 160         if (prt_flags & PS_PRTLWPS)
 161                 mdb_printf("\tL  %?a ID: %u\n", t->t_lwp, t->t_tid);
 162 
 163         return (WALK_NEXT);
 164 }
 165 
 166 int
 167 ps(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 168 {
 169         uint_t prt_flags = 0;
 170         proc_t pr;
 171         struct pid pid, pgid, sid;
 172         sess_t session;
 173         cred_t cred;
 174         task_t tk;
 175         kproject_t pj;
 176         zone_t zn;
 177 
 178         if (!(flags & DCMD_ADDRSPEC)) {
 179                 if (mdb_walk_dcmd("proc", "ps", argc, argv) == -1) {
 180                         mdb_warn("can't walk 'proc'");
 181                         return (DCMD_ERR);
 182                 }
 183                 return (DCMD_OK);
 184         }
 185 
 186         if (mdb_getopts(argc, argv,
 187             'f', MDB_OPT_SETBITS, PS_PSARGS, &prt_flags,
 188             'l', MDB_OPT_SETBITS, PS_PRTLWPS, &prt_flags,
 189             'T', MDB_OPT_SETBITS, PS_TASKS, &prt_flags,
 190             'P', MDB_OPT_SETBITS, PS_PROJECTS, &prt_flags,
 191             'z', MDB_OPT_SETBITS, PS_ZONES, &prt_flags,
 192             't', MDB_OPT_SETBITS, PS_PRTTHREADS, &prt_flags, NULL) != argc)
 193                 return (DCMD_USAGE);
 194 
 195         if (DCMD_HDRSPEC(flags)) {
 196                 mdb_printf("%<u>%1s %6s %6s %6s %6s ",
 197                     "S", "PID", "PPID", "PGID", "SID");
 198                 if (prt_flags & PS_TASKS)
 199                         mdb_printf("%5s ", "TASK");
 200                 if (prt_flags & PS_PROJECTS)
 201                         mdb_printf("%5s ", "PROJ");
 202                 if (prt_flags & PS_ZONES)
 203                         mdb_printf("%5s ", "ZONE");
 204                 mdb_printf("%6s %10s %?s %s%</u>\n",
 205                     "UID", "FLAGS", "ADDR", "NAME");
 206         }
 207 
 208         mdb_vread(&pr, sizeof (pr), addr);
 209         mdb_vread(&pid, sizeof (pid), (uintptr_t)pr.p_pidp);
 210         mdb_vread(&pgid, sizeof (pgid), (uintptr_t)pr.p_pgidp);
 211         mdb_vread(&cred, sizeof (cred), (uintptr_t)pr.p_cred);
 212         mdb_vread(&session, sizeof (session), (uintptr_t)pr.p_sessp);
 213         mdb_vread(&sid, sizeof (sid), (uintptr_t)session.s_sidp);
 214         if (prt_flags & (PS_TASKS | PS_PROJECTS))
 215                 mdb_vread(&tk, sizeof (tk), (uintptr_t)pr.p_task);
 216         if (prt_flags & PS_PROJECTS)
 217                 mdb_vread(&pj, sizeof (pj), (uintptr_t)tk.tk_proj);
 218         if (prt_flags & PS_ZONES)
 219                 mdb_vread(&zn, sizeof (zone_t), (uintptr_t)pr.p_zone);
 220 
 221         mdb_printf("%c %6d %6d %6d %6d ",
 222             pstat2ch(pr.p_stat), pid.pid_id, pr.p_ppid, pgid.pid_id,
 223             sid.pid_id);
 224         if (prt_flags & PS_TASKS)
 225                 mdb_printf("%5d ", tk.tk_tkid);
 226         if (prt_flags & PS_PROJECTS)
 227                 mdb_printf("%5d ", pj.kpj_id);
 228         if (prt_flags & PS_ZONES)
 229                 mdb_printf("%5d ", zn.zone_id);
 230         mdb_printf("%6d 0x%08x %0?p %s\n",
 231             cred.cr_uid, pr.p_flag, addr,
 232             (prt_flags & PS_PSARGS) ? pr.p_user.u_psargs : pr.p_user.u_comm);
 233 
 234         if (prt_flags & ~PS_PSARGS)
 235                 (void) mdb_pwalk("thread", ps_threadprint, &prt_flags, addr);
 236 
 237         return (DCMD_OK);
 238 }
 239 
 240 #define PG_NEWEST       0x0001
 241 #define PG_OLDEST       0x0002
 242 #define PG_PIPE_OUT     0x0004
 243 #define PG_EXACT_MATCH  0x0008
 244 
 245 typedef struct pgrep_data {
 246         uint_t pg_flags;
 247         uint_t pg_psflags;
 248         uintptr_t pg_xaddr;
 249         hrtime_t pg_xstart;
 250         const char *pg_pat;
 251 #ifndef _KMDB
 252         regex_t pg_reg;
 253 #endif
 254 } pgrep_data_t;
 255 
 256 /*ARGSUSED*/
 257 static int
 258 pgrep_cb(uintptr_t addr, const void *pdata, void *data)
 259 {
 260         const proc_t *prp = pdata;
 261         pgrep_data_t *pgp = data;
 262 #ifndef _KMDB
 263         regmatch_t pmatch;
 264 #endif
 265 
 266         /*
 267          * kmdb doesn't have access to the reg* functions, so we fall back
 268          * to strstr/strcmp.
 269          */
 270 #ifdef _KMDB
 271         if ((pgp->pg_flags & PG_EXACT_MATCH) ?
 272             (strcmp(prp->p_user.u_comm, pgp->pg_pat) != 0) :
 273             (strstr(prp->p_user.u_comm, pgp->pg_pat) == NULL))
 274                 return (WALK_NEXT);
 275 #else
 276         if (regexec(&pgp->pg_reg, prp->p_user.u_comm, 1, &pmatch, 0) != 0)
 277                 return (WALK_NEXT);
 278 
 279         if ((pgp->pg_flags & PG_EXACT_MATCH) &&
 280             (pmatch.rm_so != 0 || prp->p_user.u_comm[pmatch.rm_eo] != '\0'))
 281                 return (WALK_NEXT);
 282 #endif
 283 
 284         if (pgp->pg_flags & (PG_NEWEST | PG_OLDEST)) {
 285                 hrtime_t start;
 286 
 287                 start = (hrtime_t)prp->p_user.u_start.tv_sec * NANOSEC +
 288                     prp->p_user.u_start.tv_nsec;
 289 
 290                 if (pgp->pg_flags & PG_NEWEST) {
 291                         if (pgp->pg_xaddr == NULL || start > pgp->pg_xstart) {
 292                                 pgp->pg_xaddr = addr;
 293                                 pgp->pg_xstart = start;
 294                         }
 295                 } else {
 296                         if (pgp->pg_xaddr == NULL || start < pgp->pg_xstart) {
 297                                 pgp->pg_xaddr = addr;
 298                                 pgp->pg_xstart = start;
 299                         }
 300                 }
 301 
 302         } else if (pgp->pg_flags & PG_PIPE_OUT) {
 303                 mdb_printf("%p\n", addr);
 304 
 305         } else {
 306                 if (mdb_call_dcmd("ps", addr, pgp->pg_psflags, 0, NULL) != 0) {
 307                         mdb_warn("can't invoke 'ps'");
 308                         return (WALK_DONE);
 309                 }
 310                 pgp->pg_psflags &= ~DCMD_LOOPFIRST;
 311         }
 312 
 313         return (WALK_NEXT);
 314 }
 315 
 316 /*ARGSUSED*/
 317 int
 318 pgrep(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 319 {
 320         pgrep_data_t pg;
 321         int i;
 322 #ifndef _KMDB
 323         int err;
 324 #endif
 325 
 326         if (flags & DCMD_ADDRSPEC)
 327                 return (DCMD_USAGE);
 328 
 329         pg.pg_flags = 0;
 330         pg.pg_xaddr = 0;
 331 
 332         i = mdb_getopts(argc, argv,
 333             'n', MDB_OPT_SETBITS, PG_NEWEST, &pg.pg_flags,
 334             'o', MDB_OPT_SETBITS, PG_OLDEST, &pg.pg_flags,
 335             'x', MDB_OPT_SETBITS, PG_EXACT_MATCH, &pg.pg_flags,
 336             NULL);
 337 
 338         argc -= i;
 339         argv += i;
 340 
 341         if (argc != 1)
 342                 return (DCMD_USAGE);
 343 
 344         /*
 345          * -n and -o are mutually exclusive.
 346          */
 347         if ((pg.pg_flags & PG_NEWEST) && (pg.pg_flags & PG_OLDEST))
 348                 return (DCMD_USAGE);
 349 
 350         if (argv->a_type != MDB_TYPE_STRING)
 351                 return (DCMD_USAGE);
 352 
 353         if (flags & DCMD_PIPE_OUT)
 354                 pg.pg_flags |= PG_PIPE_OUT;
 355 
 356         pg.pg_pat = argv->a_un.a_str;
 357         if (DCMD_HDRSPEC(flags))
 358                 pg.pg_psflags = DCMD_ADDRSPEC | DCMD_LOOP | DCMD_LOOPFIRST;
 359         else
 360                 pg.pg_psflags = DCMD_ADDRSPEC | DCMD_LOOP;
 361 
 362 #ifndef _KMDB
 363         if ((err = regcomp(&pg.pg_reg, pg.pg_pat, REG_EXTENDED)) != 0) {
 364                 size_t nbytes;
 365                 char *buf;
 366 
 367                 nbytes = regerror(err, &pg.pg_reg, NULL, 0);
 368                 buf = mdb_alloc(nbytes + 1, UM_SLEEP | UM_GC);
 369                 (void) regerror(err, &pg.pg_reg, buf, nbytes);
 370                 mdb_warn("%s\n", buf);
 371 
 372                 return (DCMD_ERR);
 373         }
 374 #endif
 375 
 376         if (mdb_walk("proc", pgrep_cb, &pg) != 0) {
 377                 mdb_warn("can't walk 'proc'");
 378                 return (DCMD_ERR);
 379         }
 380 
 381         if (pg.pg_xaddr != 0 && (pg.pg_flags & (PG_NEWEST | PG_OLDEST))) {
 382                 if (pg.pg_flags & PG_PIPE_OUT) {
 383                         mdb_printf("%p\n", pg.pg_xaddr);
 384                 } else {
 385                         if (mdb_call_dcmd("ps", pg.pg_xaddr, pg.pg_psflags,
 386                             0, NULL) != 0) {
 387                                 mdb_warn("can't invoke 'ps'");
 388                                 return (DCMD_ERR);
 389                         }
 390                 }
 391         }
 392 
 393         return (DCMD_OK);
 394 }
 395 
 396 int
 397 task(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 398 {
 399         task_t tk;
 400         kproject_t pj;
 401 
 402         if (!(flags & DCMD_ADDRSPEC)) {
 403                 if (mdb_walk_dcmd("task_cache", "task", argc, argv) == -1) {
 404                         mdb_warn("can't walk task_cache");
 405                         return (DCMD_ERR);
 406                 }
 407                 return (DCMD_OK);
 408         }
 409         if (DCMD_HDRSPEC(flags)) {
 410                 mdb_printf("%<u>%?s %6s %6s %6s %6s %10s%</u>\n",
 411                     "ADDR", "TASKID", "PROJID", "ZONEID", "REFCNT", "FLAGS");
 412         }
 413         if (mdb_vread(&tk, sizeof (task_t), addr) == -1) {
 414                 mdb_warn("can't read task_t structure at %p", addr);
 415                 return (DCMD_ERR);
 416         }
 417         if (mdb_vread(&pj, sizeof (kproject_t), (uintptr_t)tk.tk_proj) == -1) {
 418                 mdb_warn("can't read project_t structure at %p", addr);
 419                 return (DCMD_ERR);
 420         }
 421         mdb_printf("%0?p %6d %6d %6d %6u 0x%08x\n",
 422             addr, tk.tk_tkid, pj.kpj_id, pj.kpj_zoneid, tk.tk_hold_count,
 423             tk.tk_flags);
 424         return (DCMD_OK);
 425 }
 426 
 427 int
 428 project(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 429 {
 430         kproject_t pj;
 431 
 432         if (!(flags & DCMD_ADDRSPEC)) {
 433                 if (mdb_walk_dcmd("projects", "project", argc, argv) == -1) {
 434                         mdb_warn("can't walk projects");
 435                         return (DCMD_ERR);
 436                 }
 437                 return (DCMD_OK);
 438         }
 439         if (DCMD_HDRSPEC(flags)) {
 440                 mdb_printf("%<u>%?s %6s %6s %6s%</u>\n",
 441                     "ADDR", "PROJID", "ZONEID", "REFCNT");
 442         }
 443         if (mdb_vread(&pj, sizeof (kproject_t), addr) == -1) {
 444                 mdb_warn("can't read kproject_t structure at %p", addr);
 445                 return (DCMD_ERR);
 446         }
 447         mdb_printf("%0?p %6d %6d %6u\n", addr, pj.kpj_id, pj.kpj_zoneid,
 448             pj.kpj_count);
 449         return (DCMD_OK);
 450 }
 451 
 452 /* walk callouts themselves, either by list or id hash. */
 453 int
 454 callout_walk_init(mdb_walk_state_t *wsp)
 455 {
 456         if (wsp->walk_addr == NULL) {
 457                 mdb_warn("callout doesn't support global walk");
 458                 return (WALK_ERR);
 459         }
 460         wsp->walk_data = mdb_alloc(sizeof (callout_t), UM_SLEEP);
 461         return (WALK_NEXT);
 462 }
 463 
 464 #define CALLOUT_WALK_BYLIST     0
 465 #define CALLOUT_WALK_BYID       1
 466 
 467 /* the walker arg switches between walking by list (0) and walking by id (1). */
 468 int
 469 callout_walk_step(mdb_walk_state_t *wsp)
 470 {
 471         int retval;
 472 
 473         if (wsp->walk_addr == NULL) {
 474                 return (WALK_DONE);
 475         }
 476         if (mdb_vread(wsp->walk_data, sizeof (callout_t),
 477             wsp->walk_addr) == -1) {
 478                 mdb_warn("failed to read callout at %p", wsp->walk_addr);
 479                 return (WALK_DONE);
 480         }
 481         retval = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
 482             wsp->walk_cbdata);
 483 
 484         if ((ulong_t)wsp->walk_arg == CALLOUT_WALK_BYID) {
 485                 wsp->walk_addr =
 486                     (uintptr_t)(((callout_t *)wsp->walk_data)->c_idnext);
 487         } else {
 488                 wsp->walk_addr =
 489                     (uintptr_t)(((callout_t *)wsp->walk_data)->c_clnext);
 490         }
 491 
 492         return (retval);
 493 }
 494 
 495 void
 496 callout_walk_fini(mdb_walk_state_t *wsp)
 497 {
 498         mdb_free(wsp->walk_data, sizeof (callout_t));
 499 }
 500 
 501 /*
 502  * walker for callout lists. This is different from hashes and callouts.
 503  * Thankfully, it's also simpler.
 504  */
 505 int
 506 callout_list_walk_init(mdb_walk_state_t *wsp)
 507 {
 508         if (wsp->walk_addr == NULL) {
 509                 mdb_warn("callout list doesn't support global walk");
 510                 return (WALK_ERR);
 511         }
 512         wsp->walk_data = mdb_alloc(sizeof (callout_list_t), UM_SLEEP);
 513         return (WALK_NEXT);
 514 }
 515 
 516 int
 517 callout_list_walk_step(mdb_walk_state_t *wsp)
 518 {
 519         int retval;
 520 
 521         if (wsp->walk_addr == NULL) {
 522                 return (WALK_DONE);
 523         }
 524         if (mdb_vread(wsp->walk_data, sizeof (callout_list_t),
 525             wsp->walk_addr) != sizeof (callout_list_t)) {
 526                 mdb_warn("failed to read callout_list at %p", wsp->walk_addr);
 527                 return (WALK_ERR);
 528         }
 529         retval = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
 530             wsp->walk_cbdata);
 531 
 532         wsp->walk_addr = (uintptr_t)
 533             (((callout_list_t *)wsp->walk_data)->cl_next);
 534 
 535         return (retval);
 536 }
 537 
 538 void
 539 callout_list_walk_fini(mdb_walk_state_t *wsp)
 540 {
 541         mdb_free(wsp->walk_data, sizeof (callout_list_t));
 542 }
 543 
 544 /* routines/structs to walk callout table(s) */
 545 typedef struct cot_data {
 546         callout_table_t *ct0;
 547         callout_table_t ct;
 548         callout_hash_t cot_idhash[CALLOUT_BUCKETS];
 549         callout_hash_t cot_clhash[CALLOUT_BUCKETS];
 550         kstat_named_t ct_kstat_data[CALLOUT_NUM_STATS];
 551         int cotndx;
 552         int cotsize;
 553 } cot_data_t;
 554 
 555 int
 556 callout_table_walk_init(mdb_walk_state_t *wsp)
 557 {
 558         int max_ncpus;
 559         cot_data_t *cot_walk_data;
 560 
 561         cot_walk_data = mdb_alloc(sizeof (cot_data_t), UM_SLEEP);
 562 
 563         if (wsp->walk_addr == NULL) {
 564                 if (mdb_readvar(&cot_walk_data->ct0, "callout_table") == -1) {
 565                         mdb_warn("failed to read 'callout_table'");
 566                         return (WALK_ERR);
 567                 }
 568                 if (mdb_readvar(&max_ncpus, "max_ncpus") == -1) {
 569                         mdb_warn("failed to get callout_table array size");
 570                         return (WALK_ERR);
 571                 }
 572                 cot_walk_data->cotsize = CALLOUT_NTYPES * max_ncpus;
 573                 wsp->walk_addr = (uintptr_t)cot_walk_data->ct0;
 574         } else {
 575                 /* not a global walk */
 576                 cot_walk_data->cotsize = 1;
 577         }
 578 
 579         cot_walk_data->cotndx = 0;
 580         wsp->walk_data = cot_walk_data;
 581 
 582         return (WALK_NEXT);
 583 }
 584 
 585 int
 586 callout_table_walk_step(mdb_walk_state_t *wsp)
 587 {
 588         int retval;
 589         cot_data_t *cotwd = (cot_data_t *)wsp->walk_data;
 590         size_t size;
 591 
 592         if (cotwd->cotndx >= cotwd->cotsize) {
 593                 return (WALK_DONE);
 594         }
 595         if (mdb_vread(&(cotwd->ct), sizeof (callout_table_t),
 596             wsp->walk_addr) != sizeof (callout_table_t)) {
 597                 mdb_warn("failed to read callout_table at %p", wsp->walk_addr);
 598                 return (WALK_ERR);
 599         }
 600 
 601         size = sizeof (callout_hash_t) * CALLOUT_BUCKETS;
 602         if (cotwd->ct.ct_idhash != NULL) {
 603                 if (mdb_vread(cotwd->cot_idhash, size,
 604                     (uintptr_t)(cotwd->ct.ct_idhash)) != size) {
 605                         mdb_warn("failed to read id_hash at %p",
 606                             cotwd->ct.ct_idhash);
 607                         return (WALK_ERR);
 608                 }
 609         }
 610         if (cotwd->ct.ct_clhash != NULL) {
 611                 if (mdb_vread(&(cotwd->cot_clhash), size,
 612                     (uintptr_t)cotwd->ct.ct_clhash) == -1) {
 613                         mdb_warn("failed to read cl_hash at %p",
 614                             cotwd->ct.ct_clhash);
 615                         return (WALK_ERR);
 616                 }
 617         }
 618         size = sizeof (kstat_named_t) * CALLOUT_NUM_STATS;
 619         if (cotwd->ct.ct_kstat_data != NULL) {
 620                 if (mdb_vread(&(cotwd->ct_kstat_data), size,
 621                     (uintptr_t)cotwd->ct.ct_kstat_data) == -1) {
 622                         mdb_warn("failed to read kstats at %p",
 623                             cotwd->ct.ct_kstat_data);
 624                         return (WALK_ERR);
 625                 }
 626         }
 627         retval = wsp->walk_callback(wsp->walk_addr, (void *)cotwd,
 628             wsp->walk_cbdata);
 629 
 630         cotwd->cotndx++;
 631         if (cotwd->cotndx >= cotwd->cotsize) {
 632                 return (WALK_DONE);
 633         }
 634         wsp->walk_addr = (uintptr_t)((char *)wsp->walk_addr +
 635             sizeof (callout_table_t));
 636 
 637         return (retval);
 638 }
 639 
 640 void
 641 callout_table_walk_fini(mdb_walk_state_t *wsp)
 642 {
 643         mdb_free(wsp->walk_data, sizeof (cot_data_t));
 644 }
 645 
 646 static const char *co_typenames[] = { "R", "N" };
 647 
 648 #define CO_PLAIN_ID(xid)        ((xid) & CALLOUT_ID_MASK)
 649 
 650 #define TABLE_TO_SEQID(x)       ((x) >> CALLOUT_TYPE_BITS)
 651 
 652 /* callout flags, in no particular order */
 653 #define COF_REAL        0x00000001
 654 #define COF_NORM        0x00000002
 655 #define COF_LONG        0x00000004
 656 #define COF_SHORT       0x00000008
 657 #define COF_EMPTY       0x00000010
 658 #define COF_TIME        0x00000020
 659 #define COF_BEFORE      0x00000040
 660 #define COF_AFTER       0x00000080
 661 #define COF_SEQID       0x00000100
 662 #define COF_FUNC        0x00000200
 663 #define COF_ADDR        0x00000400
 664 #define COF_EXEC        0x00000800
 665 #define COF_HIRES       0x00001000
 666 #define COF_ABS         0x00002000
 667 #define COF_TABLE       0x00004000
 668 #define COF_BYIDH       0x00008000
 669 #define COF_FREE        0x00010000
 670 #define COF_LIST        0x00020000
 671 #define COF_EXPREL      0x00040000
 672 #define COF_HDR         0x00080000
 673 #define COF_VERBOSE     0x00100000
 674 #define COF_LONGLIST    0x00200000
 675 #define COF_THDR        0x00400000
 676 #define COF_LHDR        0x00800000
 677 #define COF_CHDR        0x01000000
 678 #define COF_PARAM       0x02000000
 679 #define COF_DECODE      0x04000000
 680 #define COF_HEAP        0x08000000
 681 #define COF_QUEUE       0x10000000
 682 
 683 /* show real and normal, short and long, expired and unexpired. */
 684 #define COF_DEFAULT     (COF_REAL | COF_NORM | COF_LONG | COF_SHORT)
 685 
 686 #define COF_LIST_FLAGS  \
 687         (CALLOUT_LIST_FLAG_HRESTIME | CALLOUT_LIST_FLAG_ABSOLUTE)
 688 
 689 /* private callout data for callback functions */
 690 typedef struct callout_data {
 691         uint_t flags;           /* COF_* */
 692         cpu_t *cpu;             /* cpu pointer if given */
 693         int seqid;              /* cpu seqid, or -1 */
 694         hrtime_t time;          /* expiration time value */
 695         hrtime_t atime;         /* expiration before value */
 696         hrtime_t btime;         /* expiration after value */
 697         uintptr_t funcaddr;     /* function address or NULL */
 698         uintptr_t param;        /* parameter to function or NULL */
 699         hrtime_t now;           /* current system time */
 700         int nsec_per_tick;      /* for conversions */
 701         ulong_t ctbits;         /* for decoding xid */
 702         callout_table_t *co_table;      /* top of callout table array */
 703         int ndx;                /* table index. */
 704         int bucket;             /* which list/id bucket are we in */
 705         hrtime_t exp;           /* expire time */
 706         int list_flags;         /* copy of cl_flags */
 707 } callout_data_t;
 708 
 709 /* this callback does the actual callback itself (finally). */
 710 /*ARGSUSED*/
 711 static int
 712 callouts_cb(uintptr_t addr, const void *data, void *priv)
 713 {
 714         callout_data_t *coargs = (callout_data_t *)priv;
 715         callout_t *co = (callout_t *)data;
 716         int tableid, list_flags;
 717         callout_id_t coid;
 718 
 719         if ((coargs == NULL) || (co == NULL)) {
 720                 return (WALK_ERR);
 721         }
 722 
 723         if ((coargs->flags & COF_FREE) && !(co->c_xid & CALLOUT_ID_FREE)) {
 724                 /*
 725                  * The callout must have been reallocated. No point in
 726                  * walking any more.
 727                  */
 728                 return (WALK_DONE);
 729         }
 730         if (!(coargs->flags & COF_FREE) && (co->c_xid & CALLOUT_ID_FREE)) {
 731                 /*
 732                  * The callout must have been freed. No point in
 733                  * walking any more.
 734                  */
 735                 return (WALK_DONE);
 736         }
 737         if ((coargs->flags & COF_FUNC) &&
 738             (coargs->funcaddr != (uintptr_t)co->c_func)) {
 739                 return (WALK_NEXT);
 740         }
 741         if ((coargs->flags & COF_PARAM) &&
 742             (coargs->param != (uintptr_t)co->c_arg)) {
 743                 return (WALK_NEXT);
 744         }
 745         if (!(coargs->flags & COF_LONG) && (co->c_xid & CALLOUT_LONGTERM)) {
 746                 return (WALK_NEXT);
 747         }
 748         if (!(coargs->flags & COF_SHORT) && !(co->c_xid & CALLOUT_LONGTERM)) {
 749                 return (WALK_NEXT);
 750         }
 751         if ((coargs->flags & COF_EXEC) && !(co->c_xid & CALLOUT_EXECUTING)) {
 752                 return (WALK_NEXT);
 753         }
 754         /* it is possible we don't have the exp time or flags */
 755         if (coargs->flags & COF_BYIDH) {
 756                 if (!(coargs->flags & COF_FREE)) {
 757                         /* we have to fetch the expire time ourselves. */
 758                         if (mdb_vread(&coargs->exp, sizeof (hrtime_t),
 759                             (uintptr_t)co->c_list + offsetof(callout_list_t,
 760                             cl_expiration)) == -1) {
 761                                 mdb_warn("failed to read expiration "
 762                                     "time from %p", co->c_list);
 763                                 coargs->exp = 0;
 764                         }
 765                         /* and flags. */
 766                         if (mdb_vread(&coargs->list_flags, sizeof (int),
 767                             (uintptr_t)co->c_list + offsetof(callout_list_t,
 768                             cl_flags)) == -1) {
 769                                 mdb_warn("failed to read list flags"
 770                                     "from %p", co->c_list);
 771                                 coargs->list_flags = 0;
 772                         }
 773                 } else {
 774                         /* free callouts can't use list pointer. */
 775                         coargs->exp = 0;
 776                         coargs->list_flags = 0;
 777                 }
 778                 if (coargs->exp != 0) {
 779                         if ((coargs->flags & COF_TIME) &&
 780                             (coargs->exp != coargs->time)) {
 781                                 return (WALK_NEXT);
 782                         }
 783                         if ((coargs->flags & COF_BEFORE) &&
 784                             (coargs->exp > coargs->btime)) {
 785                                 return (WALK_NEXT);
 786                         }
 787                         if ((coargs->flags & COF_AFTER) &&
 788                             (coargs->exp < coargs->atime)) {
 789                                 return (WALK_NEXT);
 790                         }
 791                 }
 792                 /* tricky part, since both HIRES and ABS can be set */
 793                 list_flags = coargs->list_flags;
 794                 if ((coargs->flags & COF_HIRES) && (coargs->flags & COF_ABS)) {
 795                         /* both flags are set, only skip "regular" ones */
 796                         if (! (list_flags & COF_LIST_FLAGS)) {
 797                                 return (WALK_NEXT);
 798                         }
 799                 } else {
 800                         /* individual flags, or no flags */
 801                         if ((coargs->flags & COF_HIRES) &&
 802                             !(list_flags & CALLOUT_LIST_FLAG_HRESTIME)) {
 803                                 return (WALK_NEXT);
 804                         }
 805                         if ((coargs->flags & COF_ABS) &&
 806                             !(list_flags & CALLOUT_LIST_FLAG_ABSOLUTE)) {
 807                                 return (WALK_NEXT);
 808                         }
 809                 }
 810                 /*
 811                  * We do the checks for COF_HEAP and COF_QUEUE here only if we
 812                  * are traversing BYIDH. If the traversal is by callout list,
 813                  * we do this check in callout_list_cb() to be more
 814                  * efficient.
 815                  */
 816                 if ((coargs->flags & COF_HEAP) &&
 817                     !(list_flags & CALLOUT_LIST_FLAG_HEAPED)) {
 818                         return (WALK_NEXT);
 819                 }
 820 
 821                 if ((coargs->flags & COF_QUEUE) &&
 822                     !(list_flags & CALLOUT_LIST_FLAG_QUEUED)) {
 823                         return (WALK_NEXT);
 824                 }
 825         }
 826 
 827 #define callout_table_mask      ((1 << coargs->ctbits) - 1)
 828         tableid = CALLOUT_ID_TO_TABLE(co->c_xid);
 829 #undef  callout_table_mask
 830         coid = CO_PLAIN_ID(co->c_xid);
 831 
 832         if ((coargs->flags & COF_CHDR) && !(coargs->flags & COF_ADDR)) {
 833                 /*
 834                  * We need to print the headers. If walking by id, then
 835                  * the list header isn't printed, so we must include
 836                  * that info here.
 837                  */
 838                 if (!(coargs->flags & COF_VERBOSE)) {
 839                         mdb_printf("%<u>%3s %-1s %-14s %</u>",
 840                             "SEQ", "T", "EXP");
 841                 } else if (coargs->flags & COF_BYIDH) {
 842                         mdb_printf("%<u>%-14s %</u>", "EXP");
 843                 }
 844                 mdb_printf("%<u>%-4s %-?s %-20s%</u>",
 845                     "XHAL", "XID", "FUNC(ARG)");
 846                 if (coargs->flags & COF_LONGLIST) {
 847                         mdb_printf("%<u> %-?s %-?s %-?s %-?s%</u>",
 848                             "PREVID", "NEXTID", "PREVL", "NEXTL");
 849                         mdb_printf("%<u> %-?s %-4s %-?s%</u>",
 850                             "DONE", "UTOS", "THREAD");
 851                 }
 852                 mdb_printf("\n");
 853                 coargs->flags &= ~COF_CHDR;
 854                 coargs->flags |= (COF_THDR | COF_LHDR);
 855         }
 856 
 857         if (!(coargs->flags & COF_ADDR)) {
 858                 if (!(coargs->flags & COF_VERBOSE)) {
 859                         mdb_printf("%-3d %1s %-14llx ",
 860                             TABLE_TO_SEQID(tableid),
 861                             co_typenames[tableid & CALLOUT_TYPE_MASK],
 862                             (coargs->flags & COF_EXPREL) ?
 863                             coargs->exp - coargs->now : coargs->exp);
 864                 } else if (coargs->flags & COF_BYIDH) {
 865                         mdb_printf("%-14x ",
 866                             (coargs->flags & COF_EXPREL) ?
 867                             coargs->exp - coargs->now : coargs->exp);
 868                 }
 869                 list_flags = coargs->list_flags;
 870                 mdb_printf("%1s%1s%1s%1s %-?llx %a(%p)",
 871                     (co->c_xid & CALLOUT_EXECUTING) ? "X" : " ",
 872                     (list_flags & CALLOUT_LIST_FLAG_HRESTIME) ? "H" : " ",
 873                     (list_flags & CALLOUT_LIST_FLAG_ABSOLUTE) ? "A" : " ",
 874                     (co->c_xid & CALLOUT_LONGTERM) ? "L" : " ",
 875                     (long long)coid, co->c_func, co->c_arg);
 876                 if (coargs->flags & COF_LONGLIST) {
 877                         mdb_printf(" %-?p %-?p %-?p %-?p",
 878                             co->c_idprev, co->c_idnext, co->c_clprev,
 879                             co->c_clnext);
 880                         mdb_printf(" %-?p %-4d %-0?p",
 881                             co->c_done, co->c_waiting, co->c_executor);
 882                 }
 883         } else {
 884                 /* address only */
 885                 mdb_printf("%-0p", addr);
 886         }
 887         mdb_printf("\n");
 888         return (WALK_NEXT);
 889 }
 890 
 891 /* this callback is for callout list handling. idhash is done by callout_t_cb */
 892 /*ARGSUSED*/
 893 static int
 894 callout_list_cb(uintptr_t addr, const void *data, void *priv)
 895 {
 896         callout_data_t *coargs = (callout_data_t *)priv;
 897         callout_list_t *cl = (callout_list_t *)data;
 898         callout_t *coptr;
 899         int list_flags;
 900 
 901         if ((coargs == NULL) || (cl == NULL)) {
 902                 return (WALK_ERR);
 903         }
 904 
 905         coargs->exp = cl->cl_expiration;
 906         coargs->list_flags = cl->cl_flags;
 907         if ((coargs->flags & COF_FREE) &&
 908             !(cl->cl_flags & CALLOUT_LIST_FLAG_FREE)) {
 909                 /*
 910                  * The callout list must have been reallocated. No point in
 911                  * walking any more.
 912                  */
 913                 return (WALK_DONE);
 914         }
 915         if (!(coargs->flags & COF_FREE) &&
 916             (cl->cl_flags & CALLOUT_LIST_FLAG_FREE)) {
 917                 /*
 918                  * The callout list must have been freed. No point in
 919                  * walking any more.
 920                  */
 921                 return (WALK_DONE);
 922         }
 923         if ((coargs->flags & COF_TIME) &&
 924             (cl->cl_expiration != coargs->time)) {
 925                 return (WALK_NEXT);
 926         }
 927         if ((coargs->flags & COF_BEFORE) &&
 928             (cl->cl_expiration > coargs->btime)) {
 929                 return (WALK_NEXT);
 930         }
 931         if ((coargs->flags & COF_AFTER) &&
 932             (cl->cl_expiration < coargs->atime)) {
 933                 return (WALK_NEXT);
 934         }
 935         if (!(coargs->flags & COF_EMPTY) &&
 936             (cl->cl_callouts.ch_head == NULL)) {
 937                 return (WALK_NEXT);
 938         }
 939         /* FOUR cases, each different, !A!B, !AB, A!B, AB */
 940         if ((coargs->flags & COF_HIRES) && (coargs->flags & COF_ABS)) {
 941                 /* both flags are set, only skip "regular" ones */
 942                 if (! (cl->cl_flags & COF_LIST_FLAGS)) {
 943                         return (WALK_NEXT);
 944                 }
 945         } else {
 946                 if ((coargs->flags & COF_HIRES) &&
 947                     !(cl->cl_flags & CALLOUT_LIST_FLAG_HRESTIME)) {
 948                         return (WALK_NEXT);
 949                 }
 950                 if ((coargs->flags & COF_ABS) &&
 951                     !(cl->cl_flags & CALLOUT_LIST_FLAG_ABSOLUTE)) {
 952                         return (WALK_NEXT);
 953                 }
 954         }
 955 
 956         if ((coargs->flags & COF_HEAP) &&
 957             !(coargs->list_flags & CALLOUT_LIST_FLAG_HEAPED)) {
 958                 return (WALK_NEXT);
 959         }
 960 
 961         if ((coargs->flags & COF_QUEUE) &&
 962             !(coargs->list_flags & CALLOUT_LIST_FLAG_QUEUED)) {
 963                 return (WALK_NEXT);
 964         }
 965 
 966         if ((coargs->flags & COF_LHDR) && !(coargs->flags & COF_ADDR) &&
 967             (coargs->flags & (COF_LIST | COF_VERBOSE))) {
 968                 if (!(coargs->flags & COF_VERBOSE)) {
 969                         /* don't be redundant again */
 970                         mdb_printf("%<u>SEQ T %</u>");
 971                 }
 972                 mdb_printf("%<u>EXP            HA BUCKET "
 973                     "CALLOUTS         %</u>");
 974 
 975                 if (coargs->flags & COF_LONGLIST) {
 976                         mdb_printf("%<u> %-?s %-?s%</u>",
 977                             "PREV", "NEXT");
 978                 }
 979                 mdb_printf("\n");
 980                 coargs->flags &= ~COF_LHDR;
 981                 coargs->flags |= (COF_THDR | COF_CHDR);
 982         }
 983         if (coargs->flags & (COF_LIST | COF_VERBOSE)) {
 984                 if (!(coargs->flags & COF_ADDR)) {
 985                         if (!(coargs->flags & COF_VERBOSE)) {
 986                                 mdb_printf("%3d %1s ",
 987                                     TABLE_TO_SEQID(coargs->ndx),
 988                                     co_typenames[coargs->ndx &
 989                                     CALLOUT_TYPE_MASK]);
 990                         }
 991 
 992                         list_flags = coargs->list_flags;
 993                         mdb_printf("%-14llx %1s%1s %-6d %-0?p ",
 994                             (coargs->flags & COF_EXPREL) ?
 995                             coargs->exp - coargs->now : coargs->exp,
 996                             (list_flags & CALLOUT_LIST_FLAG_HRESTIME) ?
 997                             "H" : " ",
 998                             (list_flags & CALLOUT_LIST_FLAG_ABSOLUTE) ?
 999                             "A" : " ",
1000                             coargs->bucket, cl->cl_callouts.ch_head);
1001 
1002                         if (coargs->flags & COF_LONGLIST) {
1003                                 mdb_printf(" %-?p %-?p",
1004                                     cl->cl_prev, cl->cl_next);
1005                         }
1006                 } else {
1007                         /* address only */
1008                         mdb_printf("%-0p", addr);
1009                 }
1010                 mdb_printf("\n");
1011                 if (coargs->flags & COF_LIST) {
1012                         return (WALK_NEXT);
1013                 }
1014         }
1015         /* yet another layer as we walk the actual callouts via list. */
1016         if (cl->cl_callouts.ch_head == NULL) {
1017                 return (WALK_NEXT);
1018         }
1019         /* free list structures do not have valid callouts off of them. */
1020         if (coargs->flags & COF_FREE) {
1021                 return (WALK_NEXT);
1022         }
1023         coptr = (callout_t *)cl->cl_callouts.ch_head;
1024 
1025         if (coargs->flags & COF_VERBOSE) {
1026                 mdb_inc_indent(4);
1027         }
1028         /*
1029          * walk callouts using yet another callback routine.
1030          * we use callouts_bytime because id hash is handled via
1031          * the callout_t_cb callback.
1032          */
1033         if (mdb_pwalk("callouts_bytime", callouts_cb, coargs,
1034             (uintptr_t)coptr) == -1) {
1035                 mdb_warn("cannot walk callouts at %p", coptr);
1036                 return (WALK_ERR);
1037         }
1038         if (coargs->flags & COF_VERBOSE) {
1039                 mdb_dec_indent(4);
1040         }
1041 
1042         return (WALK_NEXT);
1043 }
1044 
1045 /* this callback handles the details of callout table walking. */
1046 static int
1047 callout_t_cb(uintptr_t addr, const void *data, void *priv)
1048 {
1049         callout_data_t *coargs = (callout_data_t *)priv;
1050         cot_data_t *cotwd = (cot_data_t *)data;
1051         callout_table_t *ct = &(cotwd->ct);
1052         int index, seqid, cotype;
1053         int i;
1054         callout_list_t *clptr;
1055         callout_t *coptr;
1056 
1057         if ((coargs == NULL) || (ct == NULL) || (coargs->co_table == NULL)) {
1058                 return (WALK_ERR);
1059         }
1060 
1061         index =  ((char *)addr - (char *)coargs->co_table) /
1062             sizeof (callout_table_t);
1063         cotype = index & CALLOUT_TYPE_MASK;
1064         seqid = TABLE_TO_SEQID(index);
1065 
1066         if ((coargs->flags & COF_SEQID) && (coargs->seqid != seqid)) {
1067                 return (WALK_NEXT);
1068         }
1069 
1070         if (!(coargs->flags & COF_REAL) && (cotype == CALLOUT_REALTIME)) {
1071                 return (WALK_NEXT);
1072         }
1073 
1074         if (!(coargs->flags & COF_NORM) && (cotype == CALLOUT_NORMAL)) {
1075                 return (WALK_NEXT);
1076         }
1077 
1078         if (!(coargs->flags & COF_EMPTY) && (
1079             (ct->ct_heap == NULL) || (ct->ct_cyclic == NULL))) {
1080                 return (WALK_NEXT);
1081         }
1082 
1083         if ((coargs->flags & COF_THDR) && !(coargs->flags & COF_ADDR) &&
1084             (coargs->flags & (COF_TABLE | COF_VERBOSE))) {
1085                 /* print table hdr */
1086                 mdb_printf("%<u>%-3s %-1s %-?s %-?s %-?s %-?s%</u>",
1087                     "SEQ", "T", "FREE", "LFREE", "CYCLIC", "HEAP");
1088                 coargs->flags &= ~COF_THDR;
1089                 coargs->flags |= (COF_LHDR | COF_CHDR);
1090                 if (coargs->flags & COF_LONGLIST) {
1091                         /* more info! */
1092                         mdb_printf("%<u> %-T%-7s %-7s %-?s %-?s %-?s"
1093                             " %-?s %-?s %-?s%</u>",
1094                             "HEAPNUM", "HEAPMAX", "TASKQ", "EXPQ", "QUE",
1095                             "PEND", "FREE", "LOCK");
1096                 }
1097                 mdb_printf("\n");
1098         }
1099         if (coargs->flags & (COF_TABLE | COF_VERBOSE)) {
1100                 if (!(coargs->flags & COF_ADDR)) {
1101                         mdb_printf("%-3d %-1s %-0?p %-0?p %-0?p %-?p",
1102                             seqid, co_typenames[cotype],
1103                             ct->ct_free, ct->ct_lfree, ct->ct_cyclic,
1104                             ct->ct_heap);
1105                         if (coargs->flags & COF_LONGLIST)  {
1106                                 /* more info! */
1107                                 mdb_printf(" %-7d %-7d %-?p %-?p %-?p"
1108                                     " %-?lld %-?lld %-?p",
1109                                     ct->ct_heap_num,  ct->ct_heap_max,
1110                                     ct->ct_taskq, ct->ct_expired.ch_head,
1111                                     ct->ct_queue.ch_head,
1112                                     cotwd->ct_timeouts_pending,
1113                                     cotwd->ct_allocations -
1114                                     cotwd->ct_timeouts_pending,
1115                                     ct->ct_mutex);
1116                         }
1117                 } else {
1118                         /* address only */
1119                         mdb_printf("%-0?p", addr);
1120                 }
1121                 mdb_printf("\n");
1122                 if (coargs->flags & COF_TABLE) {
1123                         return (WALK_NEXT);
1124                 }
1125         }
1126 
1127         coargs->ndx = index;
1128         if (coargs->flags & COF_VERBOSE) {
1129                 mdb_inc_indent(4);
1130         }
1131         /* keep digging. */
1132         if (!(coargs->flags & COF_BYIDH)) {
1133                 /* walk the list hash table */
1134                 if (coargs->flags & COF_FREE) {
1135                         clptr = ct->ct_lfree;
1136                         coargs->bucket = 0;
1137                         if (clptr == NULL) {
1138                                 return (WALK_NEXT);
1139                         }
1140                         if (mdb_pwalk("callout_list", callout_list_cb, coargs,
1141                             (uintptr_t)clptr) == -1) {
1142                                 mdb_warn("cannot walk callout free list at %p",
1143                                     clptr);
1144                                 return (WALK_ERR);
1145                         }
1146                 } else {
1147                         /* first print the expired list. */
1148                         clptr = (callout_list_t *)ct->ct_expired.ch_head;
1149                         if (clptr != NULL) {
1150                                 coargs->bucket = -1;
1151                                 if (mdb_pwalk("callout_list", callout_list_cb,
1152                                     coargs, (uintptr_t)clptr) == -1) {
1153                                         mdb_warn("cannot walk callout_list"
1154                                             " at %p", clptr);
1155                                         return (WALK_ERR);
1156                                 }
1157                         }
1158                         /* then, print the callout queue */
1159                         clptr = (callout_list_t *)ct->ct_queue.ch_head;
1160                         if (clptr != NULL) {
1161                                 coargs->bucket = -1;
1162                                 if (mdb_pwalk("callout_list", callout_list_cb,
1163                                     coargs, (uintptr_t)clptr) == -1) {
1164                                         mdb_warn("cannot walk callout_list"
1165                                             " at %p", clptr);
1166                                         return (WALK_ERR);
1167                                 }
1168                         }
1169                         for (i = 0; i < CALLOUT_BUCKETS; i++) {
1170                                 if (ct->ct_clhash == NULL) {
1171                                         /* nothing to do */
1172                                         break;
1173                                 }
1174                                 if (cotwd->cot_clhash[i].ch_head == NULL) {
1175                                         continue;
1176                                 }
1177                                 clptr = (callout_list_t *)
1178                                     cotwd->cot_clhash[i].ch_head;
1179                                 coargs->bucket = i;
1180                                 /* walk list with callback routine. */
1181                                 if (mdb_pwalk("callout_list", callout_list_cb,
1182                                     coargs, (uintptr_t)clptr) == -1) {
1183                                         mdb_warn("cannot walk callout_list"
1184                                             " at %p", clptr);
1185                                         return (WALK_ERR);
1186                                 }
1187                         }
1188                 }
1189         } else {
1190                 /* walk the id hash table. */
1191                 if (coargs->flags & COF_FREE) {
1192                         coptr = ct->ct_free;
1193                         coargs->bucket = 0;
1194                         if (coptr == NULL) {
1195                                 return (WALK_NEXT);
1196                         }
1197                         if (mdb_pwalk("callouts_byid", callouts_cb, coargs,
1198                             (uintptr_t)coptr) == -1) {
1199                                 mdb_warn("cannot walk callout id free list"
1200                                     " at %p", coptr);
1201                                 return (WALK_ERR);
1202                         }
1203                 } else {
1204                         for (i = 0; i < CALLOUT_BUCKETS; i++) {
1205                                 if (ct->ct_idhash == NULL) {
1206                                         break;
1207                                 }
1208                                 coptr = (callout_t *)
1209                                     cotwd->cot_idhash[i].ch_head;
1210                                 if (coptr == NULL) {
1211                                         continue;
1212                                 }
1213                                 coargs->bucket = i;
1214 
1215                                 /*
1216                                  * walk callouts directly by id. For id
1217                                  * chain, the callout list is just a header,
1218                                  * so there's no need to walk it.
1219                                  */
1220                                 if (mdb_pwalk("callouts_byid", callouts_cb,
1221                                     coargs, (uintptr_t)coptr) == -1) {
1222                                         mdb_warn("cannot walk callouts at %p",
1223                                             coptr);
1224                                         return (WALK_ERR);
1225                                 }
1226                         }
1227                 }
1228         }
1229         if (coargs->flags & COF_VERBOSE) {
1230                 mdb_dec_indent(4);
1231         }
1232         return (WALK_NEXT);
1233 }
1234 
1235 /*
1236  * initialize some common info for both callout dcmds.
1237  */
1238 int
1239 callout_common_init(callout_data_t *coargs)
1240 {
1241         /* we need a couple of things */
1242         if (mdb_readvar(&(coargs->co_table), "callout_table") == -1) {
1243                 mdb_warn("failed to read 'callout_table'");
1244                 return (DCMD_ERR);
1245         }
1246         /* need to get now in nsecs. Approximate with hrtime vars */
1247         if (mdb_readsym(&(coargs->now), sizeof (hrtime_t), "hrtime_last") !=
1248             sizeof (hrtime_t)) {
1249                 if (mdb_readsym(&(coargs->now), sizeof (hrtime_t),
1250                     "hrtime_base") != sizeof (hrtime_t)) {
1251                         mdb_warn("Could not determine current system time");
1252                         return (DCMD_ERR);
1253                 }
1254         }
1255 
1256         if (mdb_readvar(&(coargs->ctbits), "callout_table_bits") == -1) {
1257                 mdb_warn("failed to read 'callout_table_bits'");
1258                 return (DCMD_ERR);
1259         }
1260         if (mdb_readvar(&(coargs->nsec_per_tick), "nsec_per_tick") == -1) {
1261                 mdb_warn("failed to read 'nsec_per_tick'");
1262                 return (DCMD_ERR);
1263         }
1264         return (DCMD_OK);
1265 }
1266 
1267 /*
1268  * dcmd to print callouts.  Optional addr limits to specific table.
1269  * Parses lots of options that get passed to callbacks for walkers.
1270  * Has it's own help function.
1271  */
1272 /*ARGSUSED*/
1273 int
1274 callout(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1275 {
1276         callout_data_t coargs;
1277         /* getopts doesn't help much with stuff like this */
1278         boolean_t Sflag, Cflag, tflag, aflag, bflag, dflag, kflag;
1279         char *funcname = NULL;
1280         char *paramstr = NULL;
1281         uintptr_t Stmp, Ctmp;   /* for getopt. */
1282         int retval;
1283 
1284         coargs.flags = COF_DEFAULT;
1285         Sflag = Cflag = tflag = bflag = aflag = dflag = kflag = FALSE;
1286         coargs.seqid = -1;
1287 
1288         if (mdb_getopts(argc, argv,
1289             'r', MDB_OPT_CLRBITS, COF_NORM, &coargs.flags,
1290             'n', MDB_OPT_CLRBITS, COF_REAL, &coargs.flags,
1291             'l', MDB_OPT_CLRBITS, COF_SHORT, &coargs.flags,
1292             's', MDB_OPT_CLRBITS, COF_LONG, &coargs.flags,
1293             'x', MDB_OPT_SETBITS, COF_EXEC, &coargs.flags,
1294             'h', MDB_OPT_SETBITS, COF_HIRES, &coargs.flags,
1295             'B', MDB_OPT_SETBITS, COF_ABS, &coargs.flags,
1296             'E', MDB_OPT_SETBITS, COF_EMPTY, &coargs.flags,
1297             'd', MDB_OPT_SETBITS, 1, &dflag,
1298             'C', MDB_OPT_UINTPTR_SET, &Cflag, &Ctmp,
1299             'S', MDB_OPT_UINTPTR_SET, &Sflag, &Stmp,
1300             't', MDB_OPT_UINTPTR_SET, &tflag, (uintptr_t *)&coargs.time,
1301             'a', MDB_OPT_UINTPTR_SET, &aflag, (uintptr_t *)&coargs.atime,
1302             'b', MDB_OPT_UINTPTR_SET, &bflag, (uintptr_t *)&coargs.btime,
1303             'k', MDB_OPT_SETBITS, 1, &kflag,
1304             'f', MDB_OPT_STR, &funcname,
1305             'p', MDB_OPT_STR, &paramstr,
1306             'T', MDB_OPT_SETBITS, COF_TABLE, &coargs.flags,
1307             'D', MDB_OPT_SETBITS, COF_EXPREL, &coargs.flags,
1308             'L', MDB_OPT_SETBITS, COF_LIST, &coargs.flags,
1309             'V', MDB_OPT_SETBITS, COF_VERBOSE, &coargs.flags,
1310             'v', MDB_OPT_SETBITS, COF_LONGLIST, &coargs.flags,
1311             'i', MDB_OPT_SETBITS, COF_BYIDH, &coargs.flags,
1312             'F', MDB_OPT_SETBITS, COF_FREE, &coargs.flags,
1313             'H', MDB_OPT_SETBITS, COF_HEAP, &coargs.flags,
1314             'Q', MDB_OPT_SETBITS, COF_QUEUE, &coargs.flags,
1315             'A', MDB_OPT_SETBITS, COF_ADDR, &coargs.flags,
1316             NULL) != argc) {
1317                 return (DCMD_USAGE);
1318         }
1319 
1320         /* initialize from kernel variables */
1321         if ((retval = callout_common_init(&coargs)) != DCMD_OK) {
1322                 return (retval);
1323         }
1324 
1325         /* do some option post-processing */
1326         if (kflag) {
1327                 coargs.time *= coargs.nsec_per_tick;
1328                 coargs.atime *= coargs.nsec_per_tick;
1329                 coargs.btime *= coargs.nsec_per_tick;
1330         }
1331 
1332         if (dflag) {
1333                 coargs.time += coargs.now;
1334                 coargs.atime += coargs.now;
1335                 coargs.btime += coargs.now;
1336         }
1337         if (Sflag) {
1338                 if (flags & DCMD_ADDRSPEC) {
1339                         mdb_printf("-S option conflicts with explicit"
1340                             " address\n");
1341                         return (DCMD_USAGE);
1342                 }
1343                 coargs.flags |= COF_SEQID;
1344                 coargs.seqid = (int)Stmp;
1345         }
1346         if (Cflag) {
1347                 if (flags & DCMD_ADDRSPEC) {
1348                         mdb_printf("-C option conflicts with explicit"
1349                             " address\n");
1350                         return (DCMD_USAGE);
1351                 }
1352                 if (coargs.flags & COF_SEQID) {
1353                         mdb_printf("-C and -S are mutually exclusive\n");
1354                         return (DCMD_USAGE);
1355                 }
1356                 coargs.cpu = (cpu_t *)Ctmp;
1357                 if (mdb_vread(&coargs.seqid, sizeof (processorid_t),
1358                     (uintptr_t)&(coargs.cpu->cpu_seqid)) == -1) {
1359                         mdb_warn("failed to read cpu_t at %p", Ctmp);
1360                         return (DCMD_ERR);
1361                 }
1362                 coargs.flags |= COF_SEQID;
1363         }
1364         /* avoid null outputs. */
1365         if (!(coargs.flags & (COF_REAL | COF_NORM))) {
1366                 coargs.flags |= COF_REAL | COF_NORM;
1367         }
1368         if (!(coargs.flags & (COF_LONG | COF_SHORT))) {
1369                 coargs.flags |= COF_LONG | COF_SHORT;
1370         }
1371         if (tflag) {
1372                 if (aflag || bflag) {
1373                         mdb_printf("-t and -a|b are mutually exclusive\n");
1374                         return (DCMD_USAGE);
1375                 }
1376                 coargs.flags |= COF_TIME;
1377         }
1378         if (aflag) {
1379                 coargs.flags |= COF_AFTER;
1380         }
1381         if (bflag) {
1382                 coargs.flags |= COF_BEFORE;
1383         }
1384         if ((aflag && bflag) && (coargs.btime <= coargs.atime)) {
1385                 mdb_printf("value for -a must be earlier than the value"
1386                     " for -b.\n");
1387                 return (DCMD_USAGE);
1388         }
1389 
1390         if ((coargs.flags & COF_HEAP) && (coargs.flags & COF_QUEUE)) {
1391                 mdb_printf("-H and -Q are mutually exclusive\n");
1392                 return (DCMD_USAGE);
1393         }
1394 
1395         if (funcname != NULL) {
1396                 GElf_Sym sym;
1397 
1398                 if (mdb_lookup_by_name(funcname, &sym) != 0) {
1399                         coargs.funcaddr = mdb_strtoull(funcname);
1400                 } else {
1401                         coargs.funcaddr = sym.st_value;
1402                 }
1403                 coargs.flags |= COF_FUNC;
1404         }
1405 
1406         if (paramstr != NULL) {
1407                 GElf_Sym sym;
1408 
1409                 if (mdb_lookup_by_name(paramstr, &sym) != 0) {
1410                         coargs.param = mdb_strtoull(paramstr);
1411                 } else {
1412                         coargs.param = sym.st_value;
1413                 }
1414                 coargs.flags |= COF_PARAM;
1415         }
1416 
1417         if (!(flags & DCMD_ADDRSPEC)) {
1418                 /* don't pass "dot" if no addr. */
1419                 addr = NULL;
1420         }
1421         if (addr != NULL) {
1422                 /*
1423                  * a callout table was specified. Ignore -r|n option
1424                  * to avoid null output.
1425                  */
1426                 coargs.flags |= (COF_REAL | COF_NORM);
1427         }
1428 
1429         if (DCMD_HDRSPEC(flags) || (coargs.flags & COF_VERBOSE)) {
1430                 coargs.flags |= COF_THDR | COF_LHDR | COF_CHDR;
1431         }
1432         if (coargs.flags & COF_FREE) {
1433                 coargs.flags |= COF_EMPTY;
1434                 /* -F = free callouts, -FL = free lists */
1435                 if (!(coargs.flags & COF_LIST)) {
1436                         coargs.flags |= COF_BYIDH;
1437                 }
1438         }
1439 
1440         /* walk table, using specialized callback routine. */
1441         if (mdb_pwalk("callout_table", callout_t_cb, &coargs, addr) == -1) {
1442                 mdb_warn("cannot walk callout_table");
1443                 return (DCMD_ERR);
1444         }
1445         return (DCMD_OK);
1446 }
1447 
1448 
1449 /*
1450  * Given an extended callout id, dump its information.
1451  */
1452 /*ARGSUSED*/
1453 int
1454 calloutid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1455 {
1456         callout_data_t coargs;
1457         callout_table_t *ctptr;
1458         callout_table_t ct;
1459         callout_id_t coid;
1460         callout_t *coptr;
1461         int tableid;
1462         callout_id_t xid;
1463         ulong_t idhash;
1464         int i, retval;
1465         const mdb_arg_t *arg;
1466         size_t size;
1467         callout_hash_t cot_idhash[CALLOUT_BUCKETS];
1468 
1469         coargs.flags = COF_DEFAULT | COF_BYIDH;
1470         i = mdb_getopts(argc, argv,
1471             'd', MDB_OPT_SETBITS, COF_DECODE, &coargs.flags,
1472             'v', MDB_OPT_SETBITS, COF_LONGLIST, &coargs.flags,
1473             NULL);
1474         argc -= i;
1475         argv += i;
1476 
1477         if (argc != 1) {
1478                 return (DCMD_USAGE);
1479         }
1480         arg = &argv[0];
1481 
1482         if (arg->a_type == MDB_TYPE_IMMEDIATE) {
1483                 xid = arg->a_un.a_val;
1484         } else {
1485                 xid = (callout_id_t)mdb_strtoull(arg->a_un.a_str);
1486         }
1487 
1488         if (DCMD_HDRSPEC(flags)) {
1489                 coargs.flags |= COF_CHDR;
1490         }
1491 
1492 
1493         /* initialize from kernel variables */
1494         if ((retval = callout_common_init(&coargs)) != DCMD_OK) {
1495                 return (retval);
1496         }
1497 
1498         /* we must massage the environment so that the macros will play nice */
1499 #define callout_table_mask      ((1 << coargs.ctbits) - 1)
1500 #define callout_table_bits      coargs.ctbits
1501 #define nsec_per_tick           coargs.nsec_per_tick
1502         tableid = CALLOUT_ID_TO_TABLE(xid);
1503         idhash = CALLOUT_IDHASH(xid);
1504 #undef  callouts_table_bits
1505 #undef  callout_table_mask
1506 #undef  nsec_per_tick
1507         coid = CO_PLAIN_ID(xid);
1508 
1509         if (flags & DCMD_ADDRSPEC) {
1510                 mdb_printf("calloutid does not accept explicit address.\n");
1511                 return (DCMD_USAGE);
1512         }
1513 
1514         if (coargs.flags & COF_DECODE) {
1515                 if (DCMD_HDRSPEC(flags)) {
1516                         mdb_printf("%<u>%3s %1s %2s %-?s %-6s %</u>\n",
1517                             "SEQ", "T", "XL", "XID", "IDHASH");
1518                 }
1519                 mdb_printf("%-3d %1s %1s%1s %-?llx %-6d\n",
1520                     TABLE_TO_SEQID(tableid),
1521                     co_typenames[tableid & CALLOUT_TYPE_MASK],
1522                     (xid & CALLOUT_EXECUTING) ? "X" : " ",
1523                     (xid & CALLOUT_LONGTERM) ? "L" : " ",
1524                     (long long)coid, idhash);
1525                 return (DCMD_OK);
1526         }
1527 
1528         /* get our table. Note this relies on the types being correct */
1529         ctptr = coargs.co_table + tableid;
1530         if (mdb_vread(&ct, sizeof (callout_table_t), (uintptr_t)ctptr) == -1) {
1531                 mdb_warn("failed to read callout_table at %p", ctptr);
1532                 return (DCMD_ERR);
1533         }
1534         size = sizeof (callout_hash_t) * CALLOUT_BUCKETS;
1535         if (ct.ct_idhash != NULL) {
1536                 if (mdb_vread(&(cot_idhash), size,
1537                     (uintptr_t)ct.ct_idhash) == -1) {
1538                         mdb_warn("failed to read id_hash at %p",
1539                             ct.ct_idhash);
1540                         return (WALK_ERR);
1541                 }
1542         }
1543 
1544         /* callout at beginning of hash chain */
1545         if (ct.ct_idhash == NULL) {
1546                 mdb_printf("id hash chain for this xid is empty\n");
1547                 return (DCMD_ERR);
1548         }
1549         coptr = (callout_t *)cot_idhash[idhash].ch_head;
1550         if (coptr == NULL) {
1551                 mdb_printf("id hash chain for this xid is empty\n");
1552                 return (DCMD_ERR);
1553         }
1554 
1555         coargs.ndx = tableid;
1556         coargs.bucket = idhash;
1557 
1558         /* use the walker, luke */
1559         if (mdb_pwalk("callouts_byid", callouts_cb, &coargs,
1560             (uintptr_t)coptr) == -1) {
1561                 mdb_warn("cannot walk callouts at %p", coptr);
1562                 return (WALK_ERR);
1563         }
1564 
1565         return (DCMD_OK);
1566 }
1567 
1568 void
1569 callout_help(void)
1570 {
1571         mdb_printf("callout: display callouts.\n"
1572             "Given a callout table address, display callouts from table.\n"
1573             "Without an address, display callouts from all tables.\n"
1574             "options:\n"
1575             " -r|n : limit display to (r)ealtime or (n)ormal type callouts\n"
1576             " -s|l : limit display to (s)hort-term ids or (l)ong-term ids\n"
1577             " -x : limit display to callouts which are executing\n"
1578             " -h : limit display to callouts based on hrestime\n"
1579             " -B : limit display to callouts based on absolute time\n"
1580             " -t|a|b nsec: limit display to callouts that expire a(t) time,"
1581             " (a)fter time,\n     or (b)efore time. Use -a and -b together "
1582             " to specify a range.\n     For \"now\", use -d[t|a|b] 0.\n"
1583             " -d : interpret time option to -t|a|b as delta from current time\n"
1584             " -k : use ticks instead of nanoseconds as arguments to"
1585             " -t|a|b. Note that\n     ticks are less accurate and may not"
1586             " match other tick times (ie: lbolt).\n"
1587             " -D : display exiration time as delta from current time\n"
1588             " -S seqid : limit display to callouts for this cpu sequence id\n"
1589             " -C addr :  limit display to callouts for this cpu pointer\n"
1590             " -f name|addr : limit display to callouts with this function\n"
1591             " -p name|addr : limit display to callouts functions with this"
1592             " parameter\n"
1593             " -T : display the callout table itself, instead of callouts\n"
1594             " -L : display callout lists instead of callouts\n"
1595             " -E : with -T or L, display empty data structures.\n"
1596             " -i : traverse callouts by id hash instead of list hash\n"
1597             " -F : walk free callout list (free list with -i) instead\n"
1598             " -v : display more info for each item\n"
1599             " -V : show details of each level of info as it is traversed\n"
1600             " -H : limit display to callouts in the callout heap\n"
1601             " -Q : limit display to callouts in the callout queue\n"
1602             " -A : show only addresses. Useful for pipelines.\n");
1603 }
1604 
1605 void
1606 calloutid_help(void)
1607 {
1608         mdb_printf("calloutid: display callout by id.\n"
1609             "Given an extended callout id, display the callout infomation.\n"
1610             "options:\n"
1611             " -d : do not dereference callout, just decode the id.\n"
1612             " -v : verbose display more info about the callout\n");
1613 }
1614 
1615 /*ARGSUSED*/
1616 int
1617 class(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1618 {
1619         long num_classes, i;
1620         sclass_t *class_tbl;
1621         GElf_Sym g_sclass;
1622         char class_name[PC_CLNMSZ];
1623         size_t tbl_size;
1624 
1625         if (mdb_lookup_by_name("sclass", &g_sclass) == -1) {
1626                 mdb_warn("failed to find symbol sclass\n");
1627                 return (DCMD_ERR);
1628         }
1629 
1630         tbl_size = (size_t)g_sclass.st_size;
1631         num_classes = tbl_size / (sizeof (sclass_t));
1632         class_tbl = mdb_alloc(tbl_size, UM_SLEEP | UM_GC);
1633 
1634         if (mdb_readsym(class_tbl, tbl_size, "sclass") == -1) {
1635                 mdb_warn("failed to read sclass");
1636                 return (DCMD_ERR);
1637         }
1638 
1639         mdb_printf("%<u>%4s %-10s %-24s %-24s%</u>\n", "SLOT", "NAME",
1640             "INIT FCN", "CLASS FCN");
1641 
1642         for (i = 0; i < num_classes; i++) {
1643                 if (mdb_vread(class_name, sizeof (class_name),
1644                     (uintptr_t)class_tbl[i].cl_name) == -1)
1645                         (void) strcpy(class_name, "???");
1646 
1647                 mdb_printf("%4ld %-10s %-24a %-24a\n", i, class_name,
1648                     class_tbl[i].cl_init, class_tbl[i].cl_funcs);
1649         }
1650 
1651         return (DCMD_OK);
1652 }
1653 
1654 #define FSNAMELEN       32      /* Max len of FS name we read from vnodeops */
1655 
1656 int
1657 vnode2path(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1658 {
1659         uintptr_t rootdir;
1660         vnode_t vn;
1661         char buf[MAXPATHLEN];
1662 
1663         uint_t opt_F = FALSE;
1664 
1665         if (mdb_getopts(argc, argv,
1666             'F', MDB_OPT_SETBITS, TRUE, &opt_F, NULL) != argc)
1667                 return (DCMD_USAGE);
1668 
1669         if (!(flags & DCMD_ADDRSPEC)) {
1670                 mdb_warn("expected explicit vnode_t address before ::\n");
1671                 return (DCMD_USAGE);
1672         }
1673 
1674         if (mdb_readvar(&rootdir, "rootdir") == -1) {
1675                 mdb_warn("failed to read rootdir");
1676                 return (DCMD_ERR);
1677         }
1678 
1679         if (mdb_vnode2path(addr, buf, sizeof (buf)) == -1)
1680                 return (DCMD_ERR);
1681 
1682         if (*buf == '\0') {
1683                 mdb_printf("??\n");
1684                 return (DCMD_OK);
1685         }
1686 
1687         mdb_printf("%s", buf);
1688         if (opt_F && buf[strlen(buf)-1] != '/' &&
1689             mdb_vread(&vn, sizeof (vn), addr) == sizeof (vn))
1690                 mdb_printf("%c", mdb_vtype2chr(vn.v_type, 0));
1691         mdb_printf("\n");
1692 
1693         return (DCMD_OK);
1694 }
1695 
1696 int
1697 ld_walk_init(mdb_walk_state_t *wsp)
1698 {
1699         wsp->walk_data = (void *)wsp->walk_addr;
1700         return (WALK_NEXT);
1701 }
1702 
1703 int
1704 ld_walk_step(mdb_walk_state_t *wsp)
1705 {
1706         int status;
1707         lock_descriptor_t ld;
1708 
1709         if (mdb_vread(&ld, sizeof (lock_descriptor_t), wsp->walk_addr) == -1) {
1710                 mdb_warn("couldn't read lock_descriptor_t at %p\n",
1711                     wsp->walk_addr);
1712                 return (WALK_ERR);
1713         }
1714 
1715         status = wsp->walk_callback(wsp->walk_addr, &ld, wsp->walk_cbdata);
1716         if (status == WALK_ERR)
1717                 return (WALK_ERR);
1718 
1719         wsp->walk_addr = (uintptr_t)ld.l_next;
1720         if (wsp->walk_addr == (uintptr_t)wsp->walk_data)
1721                 return (WALK_DONE);
1722 
1723         return (status);
1724 }
1725 
1726 int
1727 lg_walk_init(mdb_walk_state_t *wsp)
1728 {
1729         GElf_Sym sym;
1730 
1731         if (mdb_lookup_by_name("lock_graph", &sym) == -1) {
1732                 mdb_warn("failed to find symbol 'lock_graph'\n");
1733                 return (WALK_ERR);
1734         }
1735 
1736         wsp->walk_addr = (uintptr_t)sym.st_value;
1737         wsp->walk_data = (void *)(uintptr_t)(sym.st_value + sym.st_size);
1738 
1739         return (WALK_NEXT);
1740 }
1741 
1742 typedef struct lg_walk_data {
1743         uintptr_t startaddr;
1744         mdb_walk_cb_t callback;
1745         void *data;
1746 } lg_walk_data_t;
1747 
1748 /*
1749  * We can't use ::walk lock_descriptor directly, because the head of each graph
1750  * is really a dummy lock.  Rather than trying to dynamically determine if this
1751  * is a dummy node or not, we just filter out the initial element of the
1752  * list.
1753  */
1754 static int
1755 lg_walk_cb(uintptr_t addr, const void *data, void *priv)
1756 {
1757         lg_walk_data_t *lw = priv;
1758 
1759         if (addr != lw->startaddr)
1760                 return (lw->callback(addr, data, lw->data));
1761 
1762         return (WALK_NEXT);
1763 }
1764 
1765 int
1766 lg_walk_step(mdb_walk_state_t *wsp)
1767 {
1768         graph_t *graph;
1769         lg_walk_data_t lw;
1770 
1771         if (wsp->walk_addr >= (uintptr_t)wsp->walk_data)
1772                 return (WALK_DONE);
1773 
1774         if (mdb_vread(&graph, sizeof (graph), wsp->walk_addr) == -1) {
1775                 mdb_warn("failed to read graph_t at %p", wsp->walk_addr);
1776                 return (WALK_ERR);
1777         }
1778 
1779         wsp->walk_addr += sizeof (graph);
1780 
1781         if (graph == NULL)
1782                 return (WALK_NEXT);
1783 
1784         lw.callback = wsp->walk_callback;
1785         lw.data = wsp->walk_cbdata;
1786 
1787         lw.startaddr = (uintptr_t)&(graph->active_locks);
1788         if (mdb_pwalk("lock_descriptor", lg_walk_cb, &lw, lw.startaddr)) {
1789                 mdb_warn("couldn't walk lock_descriptor at %p\n", lw.startaddr);
1790                 return (WALK_ERR);
1791         }
1792 
1793         lw.startaddr = (uintptr_t)&(graph->sleeping_locks);
1794         if (mdb_pwalk("lock_descriptor", lg_walk_cb, &lw, lw.startaddr)) {
1795                 mdb_warn("couldn't walk lock_descriptor at %p\n", lw.startaddr);
1796                 return (WALK_ERR);
1797         }
1798 
1799         return (WALK_NEXT);
1800 }
1801 
1802 /*
1803  * The space available for the path corresponding to the locked vnode depends
1804  * on whether we are printing 32- or 64-bit addresses.
1805  */
1806 #ifdef _LP64
1807 #define LM_VNPATHLEN    20
1808 #else
1809 #define LM_VNPATHLEN    30
1810 #endif
1811 
1812 /*ARGSUSED*/
1813 static int
1814 lminfo_cb(uintptr_t addr, const void *data, void *priv)
1815 {
1816         const lock_descriptor_t *ld = data;
1817         char buf[LM_VNPATHLEN];
1818         proc_t p;
1819 
1820         mdb_printf("%-?p %2s %04x %6d %-16s %-?p ",
1821             addr, ld->l_type == F_RDLCK ? "RD" :
1822             ld->l_type == F_WRLCK ? "WR" : "??",
1823             ld->l_state, ld->l_flock.l_pid,
1824             ld->l_flock.l_pid == 0 ? "<kernel>" :
1825             mdb_pid2proc(ld->l_flock.l_pid, &p) == NULL ?
1826             "<defunct>" : p.p_user.u_comm,
1827             ld->l_vnode);
1828 
1829         mdb_vnode2path((uintptr_t)ld->l_vnode, buf,
1830             sizeof (buf));
1831         mdb_printf("%s\n", buf);
1832 
1833         return (WALK_NEXT);
1834 }
1835 
1836 /*ARGSUSED*/
1837 int
1838 lminfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1839 {
1840         if (DCMD_HDRSPEC(flags))
1841                 mdb_printf("%<u>%-?s %2s %4s %6s %-16s %-?s %s%</u>\n",
1842                     "ADDR", "TP", "FLAG", "PID", "COMM", "VNODE", "PATH");
1843 
1844         return (mdb_pwalk("lock_graph", lminfo_cb, NULL, NULL));
1845 }
1846 
1847 /*ARGSUSED*/
1848 int
1849 whereopen_fwalk(uintptr_t addr, struct file *f, uintptr_t *target)
1850 {
1851         if ((uintptr_t)f->f_vnode == *target) {
1852                 mdb_printf("file %p\n", addr);
1853                 *target = NULL;
1854         }
1855 
1856         return (WALK_NEXT);
1857 }
1858 
1859 /*ARGSUSED*/
1860 int
1861 whereopen_pwalk(uintptr_t addr, void *ignored, uintptr_t *target)
1862 {
1863         uintptr_t t = *target;
1864 
1865         if (mdb_pwalk("file", (mdb_walk_cb_t)whereopen_fwalk, &t, addr) == -1) {
1866                 mdb_warn("couldn't file walk proc %p", addr);
1867                 return (WALK_ERR);
1868         }
1869 
1870         if (t == NULL)
1871                 mdb_printf("%p\n", addr);
1872 
1873         return (WALK_NEXT);
1874 }
1875 
1876 /*ARGSUSED*/
1877 int
1878 whereopen(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1879 {
1880         uintptr_t target = addr;
1881 
1882         if (!(flags & DCMD_ADDRSPEC) || addr == NULL)
1883                 return (DCMD_USAGE);
1884 
1885         if (mdb_walk("proc", (mdb_walk_cb_t)whereopen_pwalk, &target) == -1) {
1886                 mdb_warn("can't proc walk");
1887                 return (DCMD_ERR);
1888         }
1889 
1890         return (DCMD_OK);
1891 }
1892 
1893 typedef struct datafmt {
1894         char    *hdr1;
1895         char    *hdr2;
1896         char    *dashes;
1897         char    *fmt;
1898 } datafmt_t;
1899 
1900 static datafmt_t kmemfmt[] = {
1901         { "cache                         ", "name                          ",
1902         "------------------------------", "%-30s "                      },
1903         { "  buf",      " size",        "-----",        "%5H "          },
1904         { "      buf",  "   in use",    "---------",    "%9u "          },
1905         { "      buf",  "    total",    "---------",    "%9u "          },
1906         { "memory",     "in use",       "------",       "%6lH "         },
1907         { "     alloc", "   succeed",   "----------",   "%10u "         },
1908         { "alloc",      " fail",        "-----",        "%5u"           },
1909         { NULL,         NULL,           NULL,           NULL            }
1910 };
1911 
1912 static datafmt_t vmemfmt[] = {
1913         { "vmem                          ", "name                          ",
1914         "------------------------------", "%-*s "                       },
1915         { "   memory",  "   in use",    "---------",    "%9llH "        },
1916         { "    memory", "     total",   "----------",   "%10llH "       },
1917         { "   memory",  "   import",    "---------",    "%9llH "        },
1918         { "     alloc", "   succeed",   "----------",   "%10llu "       },
1919         { "alloc",      " fail",        "-----",        "%5llu "        },
1920         { NULL,         NULL,           NULL,           NULL            }
1921 };
1922 
1923 /*ARGSUSED*/
1924 static int
1925 kmastat_cpu_avail(uintptr_t addr, const kmem_cpu_cache_t *ccp, int *avail)
1926 {
1927         short rounds, prounds;
1928 
1929         if (KMEM_DUMPCC(ccp)) {
1930                 rounds = ccp->cc_dump_rounds;
1931                 prounds = ccp->cc_dump_prounds;
1932         } else {
1933                 rounds = ccp->cc_rounds;
1934                 prounds = ccp->cc_prounds;
1935         }
1936         if (rounds > 0)
1937                 *avail += rounds;
1938         if (prounds > 0)
1939                 *avail += prounds;
1940 
1941         return (WALK_NEXT);
1942 }
1943 
1944 /*ARGSUSED*/
1945 static int
1946 kmastat_cpu_alloc(uintptr_t addr, const kmem_cpu_cache_t *ccp, int *alloc)
1947 {
1948         *alloc += ccp->cc_alloc;
1949 
1950         return (WALK_NEXT);
1951 }
1952 
1953 /*ARGSUSED*/
1954 static int
1955 kmastat_slab_avail(uintptr_t addr, const kmem_slab_t *sp, int *avail)
1956 {
1957         *avail += sp->slab_chunks - sp->slab_refcnt;
1958 
1959         return (WALK_NEXT);
1960 }
1961 
1962 typedef struct kmastat_vmem {
1963         uintptr_t kv_addr;
1964         struct kmastat_vmem *kv_next;
1965         size_t kv_meminuse;
1966         int kv_alloc;
1967         int kv_fail;
1968 } kmastat_vmem_t;
1969 
1970 static int
1971 kmastat_cache(uintptr_t addr, const kmem_cache_t *cp, kmastat_vmem_t **kvpp)
1972 {
1973         kmastat_vmem_t *kv;
1974         datafmt_t *dfp = kmemfmt;
1975         int magsize;
1976 
1977         int avail, alloc, total;
1978         size_t meminuse = (cp->cache_slab_create - cp->cache_slab_destroy) *
1979             cp->cache_slabsize;
1980 
1981         mdb_walk_cb_t cpu_avail = (mdb_walk_cb_t)kmastat_cpu_avail;
1982         mdb_walk_cb_t cpu_alloc = (mdb_walk_cb_t)kmastat_cpu_alloc;
1983         mdb_walk_cb_t slab_avail = (mdb_walk_cb_t)kmastat_slab_avail;
1984 
1985         magsize = kmem_get_magsize(cp);
1986 
1987         alloc = cp->cache_slab_alloc + cp->cache_full.ml_alloc;
1988         avail = cp->cache_full.ml_total * magsize;
1989         total = cp->cache_buftotal;
1990 
1991         (void) mdb_pwalk("kmem_cpu_cache", cpu_alloc, &alloc, addr);
1992         (void) mdb_pwalk("kmem_cpu_cache", cpu_avail, &avail, addr);
1993         (void) mdb_pwalk("kmem_slab_partial", slab_avail, &avail, addr);
1994 
1995         for (kv = *kvpp; kv != NULL; kv = kv->kv_next) {
1996                 if (kv->kv_addr == (uintptr_t)cp->cache_arena)
1997                         goto out;
1998         }
1999 
2000         kv = mdb_zalloc(sizeof (kmastat_vmem_t), UM_SLEEP | UM_GC);
2001         kv->kv_next = *kvpp;
2002         kv->kv_addr = (uintptr_t)cp->cache_arena;
2003         *kvpp = kv;
2004 out:
2005         kv->kv_meminuse += meminuse;
2006         kv->kv_alloc += alloc;
2007         kv->kv_fail += cp->cache_alloc_fail;
2008 
2009         mdb_printf((dfp++)->fmt, cp->cache_name);
2010         mdb_printf((dfp++)->fmt, cp->cache_bufsize);
2011         mdb_printf((dfp++)->fmt, total - avail);
2012         mdb_printf((dfp++)->fmt, total);
2013         mdb_printf((dfp++)->fmt, meminuse);
2014         mdb_printf((dfp++)->fmt, alloc);
2015         mdb_printf((dfp++)->fmt, cp->cache_alloc_fail);
2016         mdb_printf("\n");
2017 
2018         return (WALK_NEXT);
2019 }
2020 
2021 static int
2022 kmastat_vmem_totals(uintptr_t addr, const vmem_t *v, kmastat_vmem_t *kv)
2023 {
2024         size_t len;
2025 
2026         while (kv != NULL && kv->kv_addr != addr)
2027                 kv = kv->kv_next;
2028 
2029         if (kv == NULL || kv->kv_alloc == 0)
2030                 return (WALK_NEXT);
2031 
2032         len = MIN(22, strlen(v->vm_name));
2033 
2034         mdb_printf("Total [%s]%*s %5s %9s %9s %6lH %10u %5u\n", v->vm_name,
2035             22 - len, "", "", "", "",
2036             kv->kv_meminuse, kv->kv_alloc, kv->kv_fail);
2037 
2038         return (WALK_NEXT);
2039 }
2040 
2041 /*ARGSUSED*/
2042 static int
2043 kmastat_vmem(uintptr_t addr, const vmem_t *v, const void *ignored)
2044 {
2045         datafmt_t *dfp = vmemfmt;
2046         const vmem_kstat_t *vkp = &v->vm_kstat;
2047         uintptr_t paddr;
2048         vmem_t parent;
2049         int ident = 0;
2050 
2051         for (paddr = (uintptr_t)v->vm_source; paddr != NULL; ident += 4) {
2052                 if (mdb_vread(&parent, sizeof (parent), paddr) == -1) {
2053                         mdb_warn("couldn't trace %p's ancestry", addr);
2054                         ident = 0;
2055                         break;
2056                 }
2057                 paddr = (uintptr_t)parent.vm_source;
2058         }
2059 
2060         mdb_printf("%*s", ident, "");
2061         mdb_printf((dfp++)->fmt, 30 - ident, v->vm_name);
2062         mdb_printf((dfp++)->fmt, vkp->vk_mem_inuse.value.ui64);
2063         mdb_printf((dfp++)->fmt, vkp->vk_mem_total.value.ui64);
2064         mdb_printf((dfp++)->fmt, vkp->vk_mem_import.value.ui64);
2065         mdb_printf((dfp++)->fmt, vkp->vk_alloc.value.ui64);
2066         mdb_printf((dfp++)->fmt, vkp->vk_fail.value.ui64);
2067 
2068         mdb_printf("\n");
2069 
2070         return (WALK_NEXT);
2071 }
2072 
2073 /*ARGSUSED*/
2074 int
2075 kmastat(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2076 {
2077         kmastat_vmem_t *kv = NULL;
2078         datafmt_t *dfp;
2079 
2080         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2081                 mdb_printf("%s%s", dfp == kmemfmt ? "" : " ", dfp->hdr1);
2082         mdb_printf("\n");
2083 
2084         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2085                 mdb_printf("%s%s", dfp == kmemfmt ? "" : " ", dfp->hdr2);
2086         mdb_printf("\n");
2087 
2088         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2089                 mdb_printf("%s%s", dfp == kmemfmt ? "" : " ", dfp->dashes);
2090         mdb_printf("\n");
2091 
2092         if (mdb_walk("kmem_cache", (mdb_walk_cb_t)kmastat_cache, &kv) == -1) {
2093                 mdb_warn("can't walk 'kmem_cache'");
2094                 return (DCMD_ERR);
2095         }
2096 
2097         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2098                 mdb_printf("%s%s", dfp == kmemfmt ? "" : " ", dfp->dashes);
2099         mdb_printf("\n");
2100 
2101         if (mdb_walk("vmem", (mdb_walk_cb_t)kmastat_vmem_totals, kv) == -1) {
2102                 mdb_warn("can't walk 'vmem'");
2103                 return (DCMD_ERR);
2104         }
2105 
2106         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2107                 mdb_printf("%s%s", dfp == kmemfmt ? "" : " ", dfp->dashes);
2108         mdb_printf("\n");
2109 
2110         mdb_printf("\n");
2111 
2112         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2113                 mdb_printf("%s ", dfp->hdr1);
2114         mdb_printf("\n");
2115 
2116         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2117                 mdb_printf("%s ", dfp->hdr2);
2118         mdb_printf("\n");
2119 
2120         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2121                 mdb_printf("%s ", dfp->dashes);
2122         mdb_printf("\n");
2123 
2124         if (mdb_walk("vmem", (mdb_walk_cb_t)kmastat_vmem, NULL) == -1) {
2125                 mdb_warn("can't walk 'vmem'");
2126                 return (DCMD_ERR);
2127         }
2128 
2129         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2130                 mdb_printf("%s ", dfp->dashes);
2131         mdb_printf("\n");
2132         return (DCMD_OK);
2133 }
2134 
2135 /*
2136  * Our ::kgrep callback scans the entire kernel VA space (kas).  kas is made
2137  * up of a set of 'struct seg's.  We could just scan each seg en masse, but
2138  * unfortunately, a few of the segs are both large and sparse, so we could
2139  * spend quite a bit of time scanning VAs which have no backing pages.
2140  *
2141  * So for the few very sparse segs, we skip the segment itself, and scan
2142  * the allocated vmem_segs in the vmem arena which manages that part of kas.
2143  * Currently, we do this for:
2144  *
2145  *      SEG             VMEM ARENA
2146  *      kvseg           heap_arena
2147  *      kvseg32         heap32_arena
2148  *      kvseg_core      heap_core_arena
2149  *
2150  * In addition, we skip the segkpm segment in its entirety, since it is very
2151  * sparse, and contains no new kernel data.
2152  */
2153 typedef struct kgrep_walk_data {
2154         kgrep_cb_func *kg_cb;
2155         void *kg_cbdata;
2156         uintptr_t kg_kvseg;
2157         uintptr_t kg_kvseg32;
2158         uintptr_t kg_kvseg_core;
2159         uintptr_t kg_segkpm;
2160         uintptr_t kg_heap_lp_base;
2161         uintptr_t kg_heap_lp_end;
2162 } kgrep_walk_data_t;
2163 
2164 static int
2165 kgrep_walk_seg(uintptr_t addr, const struct seg *seg, kgrep_walk_data_t *kg)
2166 {
2167         uintptr_t base = (uintptr_t)seg->s_base;
2168 
2169         if (addr == kg->kg_kvseg || addr == kg->kg_kvseg32 ||
2170             addr == kg->kg_kvseg_core)
2171                 return (WALK_NEXT);
2172 
2173         if ((uintptr_t)seg->s_ops == kg->kg_segkpm)
2174                 return (WALK_NEXT);
2175 
2176         return (kg->kg_cb(base, base + seg->s_size, kg->kg_cbdata));
2177 }
2178 
2179 /*ARGSUSED*/
2180 static int
2181 kgrep_walk_vseg(uintptr_t addr, const vmem_seg_t *seg, kgrep_walk_data_t *kg)
2182 {
2183         /*
2184          * skip large page heap address range - it is scanned by walking
2185          * allocated vmem_segs in the heap_lp_arena
2186          */
2187         if (seg->vs_start == kg->kg_heap_lp_base &&
2188             seg->vs_end == kg->kg_heap_lp_end)
2189                 return (WALK_NEXT);
2190 
2191         return (kg->kg_cb(seg->vs_start, seg->vs_end, kg->kg_cbdata));
2192 }
2193 
2194 /*ARGSUSED*/
2195 static int
2196 kgrep_xwalk_vseg(uintptr_t addr, const vmem_seg_t *seg, kgrep_walk_data_t *kg)
2197 {
2198         return (kg->kg_cb(seg->vs_start, seg->vs_end, kg->kg_cbdata));
2199 }
2200 
2201 static int
2202 kgrep_walk_vmem(uintptr_t addr, const vmem_t *vmem, kgrep_walk_data_t *kg)
2203 {
2204         mdb_walk_cb_t walk_vseg = (mdb_walk_cb_t)kgrep_walk_vseg;
2205 
2206         if (strcmp(vmem->vm_name, "heap") != 0 &&
2207             strcmp(vmem->vm_name, "heap32") != 0 &&
2208             strcmp(vmem->vm_name, "heap_core") != 0 &&
2209             strcmp(vmem->vm_name, "heap_lp") != 0)
2210                 return (WALK_NEXT);
2211 
2212         if (strcmp(vmem->vm_name, "heap_lp") == 0)
2213                 walk_vseg = (mdb_walk_cb_t)kgrep_xwalk_vseg;
2214 
2215         if (mdb_pwalk("vmem_alloc", walk_vseg, kg, addr) == -1) {
2216                 mdb_warn("couldn't walk vmem_alloc for vmem %p", addr);
2217                 return (WALK_ERR);
2218         }
2219 
2220         return (WALK_NEXT);
2221 }
2222 
2223 int
2224 kgrep_subr(kgrep_cb_func *cb, void *cbdata)
2225 {
2226         GElf_Sym kas, kvseg, kvseg32, kvseg_core, segkpm;
2227         kgrep_walk_data_t kg;
2228 
2229         if (mdb_get_state() == MDB_STATE_RUNNING) {
2230                 mdb_warn("kgrep can only be run on a system "
2231                     "dump or under kmdb; see dumpadm(1M)\n");
2232                 return (DCMD_ERR);
2233         }
2234 
2235         if (mdb_lookup_by_name("kas", &kas) == -1) {
2236                 mdb_warn("failed to locate 'kas' symbol\n");
2237                 return (DCMD_ERR);
2238         }
2239 
2240         if (mdb_lookup_by_name("kvseg", &kvseg) == -1) {
2241                 mdb_warn("failed to locate 'kvseg' symbol\n");
2242                 return (DCMD_ERR);
2243         }
2244 
2245         if (mdb_lookup_by_name("kvseg32", &kvseg32) == -1) {
2246                 mdb_warn("failed to locate 'kvseg32' symbol\n");
2247                 return (DCMD_ERR);
2248         }
2249 
2250         if (mdb_lookup_by_name("kvseg_core", &kvseg_core) == -1) {
2251                 mdb_warn("failed to locate 'kvseg_core' symbol\n");
2252                 return (DCMD_ERR);
2253         }
2254 
2255         if (mdb_lookup_by_name("segkpm_ops", &segkpm) == -1) {
2256                 mdb_warn("failed to locate 'segkpm_ops' symbol\n");
2257                 return (DCMD_ERR);
2258         }
2259 
2260         if (mdb_readvar(&kg.kg_heap_lp_base, "heap_lp_base") == -1) {
2261                 mdb_warn("failed to read 'heap_lp_base'\n");
2262                 return (DCMD_ERR);
2263         }
2264 
2265         if (mdb_readvar(&kg.kg_heap_lp_end, "heap_lp_end") == -1) {
2266                 mdb_warn("failed to read 'heap_lp_end'\n");
2267                 return (DCMD_ERR);
2268         }
2269 
2270         kg.kg_cb = cb;
2271         kg.kg_cbdata = cbdata;
2272         kg.kg_kvseg = (uintptr_t)kvseg.st_value;
2273         kg.kg_kvseg32 = (uintptr_t)kvseg32.st_value;
2274         kg.kg_kvseg_core = (uintptr_t)kvseg_core.st_value;
2275         kg.kg_segkpm = (uintptr_t)segkpm.st_value;
2276 
2277         if (mdb_pwalk("seg", (mdb_walk_cb_t)kgrep_walk_seg,
2278             &kg, kas.st_value) == -1) {
2279                 mdb_warn("failed to walk kas segments");
2280                 return (DCMD_ERR);
2281         }
2282 
2283         if (mdb_walk("vmem", (mdb_walk_cb_t)kgrep_walk_vmem, &kg) == -1) {
2284                 mdb_warn("failed to walk heap/heap32 vmem arenas");
2285                 return (DCMD_ERR);
2286         }
2287 
2288         return (DCMD_OK);
2289 }
2290 
2291 size_t
2292 kgrep_subr_pagesize(void)
2293 {
2294         return (PAGESIZE);
2295 }
2296 
2297 typedef struct file_walk_data {
2298         struct uf_entry *fw_flist;
2299         int fw_flistsz;
2300         int fw_ndx;
2301         int fw_nofiles;
2302 } file_walk_data_t;
2303 
2304 int
2305 file_walk_init(mdb_walk_state_t *wsp)
2306 {
2307         file_walk_data_t *fw;
2308         proc_t p;
2309 
2310         if (wsp->walk_addr == NULL) {
2311                 mdb_warn("file walk doesn't support global walks\n");
2312                 return (WALK_ERR);
2313         }
2314 
2315         fw = mdb_alloc(sizeof (file_walk_data_t), UM_SLEEP);
2316 
2317         if (mdb_vread(&p, sizeof (p), wsp->walk_addr) == -1) {
2318                 mdb_free(fw, sizeof (file_walk_data_t));
2319                 mdb_warn("failed to read proc structure at %p", wsp->walk_addr);
2320                 return (WALK_ERR);
2321         }
2322 
2323         if (p.p_user.u_finfo.fi_nfiles == 0) {
2324                 mdb_free(fw, sizeof (file_walk_data_t));
2325                 return (WALK_DONE);
2326         }
2327 
2328         fw->fw_nofiles = p.p_user.u_finfo.fi_nfiles;
2329         fw->fw_flistsz = sizeof (struct uf_entry) * fw->fw_nofiles;
2330         fw->fw_flist = mdb_alloc(fw->fw_flistsz, UM_SLEEP);
2331 
2332         if (mdb_vread(fw->fw_flist, fw->fw_flistsz,
2333             (uintptr_t)p.p_user.u_finfo.fi_list) == -1) {
2334                 mdb_warn("failed to read file array at %p",
2335                     p.p_user.u_finfo.fi_list);
2336                 mdb_free(fw->fw_flist, fw->fw_flistsz);
2337                 mdb_free(fw, sizeof (file_walk_data_t));
2338                 return (WALK_ERR);
2339         }
2340 
2341         fw->fw_ndx = 0;
2342         wsp->walk_data = fw;
2343 
2344         return (WALK_NEXT);
2345 }
2346 
2347 int
2348 file_walk_step(mdb_walk_state_t *wsp)
2349 {
2350         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2351         struct file file;
2352         uintptr_t fp;
2353 
2354 again:
2355         if (fw->fw_ndx == fw->fw_nofiles)
2356                 return (WALK_DONE);
2357 
2358         if ((fp = (uintptr_t)fw->fw_flist[fw->fw_ndx++].uf_file) == NULL)
2359                 goto again;
2360 
2361         (void) mdb_vread(&file, sizeof (file), (uintptr_t)fp);
2362         return (wsp->walk_callback(fp, &file, wsp->walk_cbdata));
2363 }
2364 
2365 int
2366 allfile_walk_step(mdb_walk_state_t *wsp)
2367 {
2368         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2369         struct file file;
2370         uintptr_t fp;
2371 
2372         if (fw->fw_ndx == fw->fw_nofiles)
2373                 return (WALK_DONE);
2374 
2375         if ((fp = (uintptr_t)fw->fw_flist[fw->fw_ndx++].uf_file) != NULL)
2376                 (void) mdb_vread(&file, sizeof (file), (uintptr_t)fp);
2377         else
2378                 bzero(&file, sizeof (file));
2379 
2380         return (wsp->walk_callback(fp, &file, wsp->walk_cbdata));
2381 }
2382 
2383 void
2384 file_walk_fini(mdb_walk_state_t *wsp)
2385 {
2386         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2387 
2388         mdb_free(fw->fw_flist, fw->fw_flistsz);
2389         mdb_free(fw, sizeof (file_walk_data_t));
2390 }
2391 
2392 int
2393 port_walk_init(mdb_walk_state_t *wsp)
2394 {
2395         if (wsp->walk_addr == NULL) {
2396                 mdb_warn("port walk doesn't support global walks\n");
2397                 return (WALK_ERR);
2398         }
2399 
2400         if (mdb_layered_walk("file", wsp) == -1) {
2401                 mdb_warn("couldn't walk 'file'");
2402                 return (WALK_ERR);
2403         }
2404         return (WALK_NEXT);
2405 }
2406 
2407 int
2408 port_walk_step(mdb_walk_state_t *wsp)
2409 {
2410         struct vnode    vn;
2411         uintptr_t       vp;
2412         uintptr_t       pp;
2413         struct port     port;
2414 
2415         vp = (uintptr_t)((struct file *)wsp->walk_layer)->f_vnode;
2416         if (mdb_vread(&vn, sizeof (vn), vp) == -1) {
2417                 mdb_warn("failed to read vnode_t at %p", vp);
2418                 return (WALK_ERR);
2419         }
2420         if (vn.v_type != VPORT)
2421                 return (WALK_NEXT);
2422 
2423         pp = (uintptr_t)vn.v_data;
2424         if (mdb_vread(&port, sizeof (port), pp) == -1) {
2425                 mdb_warn("failed to read port_t at %p", pp);
2426                 return (WALK_ERR);
2427         }
2428         return (wsp->walk_callback(pp, &port, wsp->walk_cbdata));
2429 }
2430 
2431 typedef struct portev_walk_data {
2432         list_node_t     *pev_node;
2433         list_node_t     *pev_last;
2434         size_t          pev_offset;
2435 } portev_walk_data_t;
2436 
2437 int
2438 portev_walk_init(mdb_walk_state_t *wsp)
2439 {
2440         portev_walk_data_t *pevd;
2441         struct port     port;
2442         struct vnode    vn;
2443         struct list     *list;
2444         uintptr_t       vp;
2445 
2446         if (wsp->walk_addr == NULL) {
2447                 mdb_warn("portev walk doesn't support global walks\n");
2448                 return (WALK_ERR);
2449         }
2450 
2451         pevd = mdb_alloc(sizeof (portev_walk_data_t), UM_SLEEP);
2452 
2453         if (mdb_vread(&port, sizeof (port), wsp->walk_addr) == -1) {
2454                 mdb_free(pevd, sizeof (portev_walk_data_t));
2455                 mdb_warn("failed to read port structure at %p", wsp->walk_addr);
2456                 return (WALK_ERR);
2457         }
2458 
2459         vp = (uintptr_t)port.port_vnode;
2460         if (mdb_vread(&vn, sizeof (vn), vp) == -1) {
2461                 mdb_free(pevd, sizeof (portev_walk_data_t));
2462                 mdb_warn("failed to read vnode_t at %p", vp);
2463                 return (WALK_ERR);
2464         }
2465 
2466         if (vn.v_type != VPORT) {
2467                 mdb_free(pevd, sizeof (portev_walk_data_t));
2468                 mdb_warn("input address (%p) does not point to an event port",
2469                     wsp->walk_addr);
2470                 return (WALK_ERR);
2471         }
2472 
2473         if (port.port_queue.portq_nent == 0) {
2474                 mdb_free(pevd, sizeof (portev_walk_data_t));
2475                 return (WALK_DONE);
2476         }
2477         list = &port.port_queue.portq_list;
2478         pevd->pev_offset = list->list_offset;
2479         pevd->pev_last = list->list_head.list_prev;
2480         pevd->pev_node = list->list_head.list_next;
2481         wsp->walk_data = pevd;
2482         return (WALK_NEXT);
2483 }
2484 
2485 int
2486 portev_walk_step(mdb_walk_state_t *wsp)
2487 {
2488         portev_walk_data_t      *pevd;
2489         struct port_kevent      ev;
2490         uintptr_t               evp;
2491 
2492         pevd = (portev_walk_data_t *)wsp->walk_data;
2493 
2494         if (pevd->pev_last == NULL)
2495                 return (WALK_DONE);
2496         if (pevd->pev_node == pevd->pev_last)
2497                 pevd->pev_last = NULL;               /* last round */
2498 
2499         evp = ((uintptr_t)(((char *)pevd->pev_node) - pevd->pev_offset));
2500         if (mdb_vread(&ev, sizeof (ev), evp) == -1) {
2501                 mdb_warn("failed to read port_kevent at %p", evp);
2502                 return (WALK_DONE);
2503         }
2504         pevd->pev_node = ev.portkev_node.list_next;
2505         return (wsp->walk_callback(evp, &ev, wsp->walk_cbdata));
2506 }
2507 
2508 void
2509 portev_walk_fini(mdb_walk_state_t *wsp)
2510 {
2511         portev_walk_data_t *pevd = (portev_walk_data_t *)wsp->walk_data;
2512 
2513         if (pevd != NULL)
2514                 mdb_free(pevd, sizeof (portev_walk_data_t));
2515 }
2516 
2517 typedef struct proc_walk_data {
2518         uintptr_t *pw_stack;
2519         int pw_depth;
2520         int pw_max;
2521 } proc_walk_data_t;
2522 
2523 int
2524 proc_walk_init(mdb_walk_state_t *wsp)
2525 {
2526         GElf_Sym sym;
2527         proc_walk_data_t *pw;
2528 
2529         if (wsp->walk_addr == NULL) {
2530                 if (mdb_lookup_by_name("p0", &sym) == -1) {
2531                         mdb_warn("failed to read 'practive'");
2532                         return (WALK_ERR);
2533                 }
2534                 wsp->walk_addr = (uintptr_t)sym.st_value;
2535         }
2536 
2537         pw = mdb_zalloc(sizeof (proc_walk_data_t), UM_SLEEP);
2538 
2539         if (mdb_readvar(&pw->pw_max, "nproc") == -1) {
2540                 mdb_warn("failed to read 'nproc'");
2541                 mdb_free(pw, sizeof (pw));
2542                 return (WALK_ERR);
2543         }
2544 
2545         pw->pw_stack = mdb_alloc(pw->pw_max * sizeof (uintptr_t), UM_SLEEP);
2546         wsp->walk_data = pw;
2547 
2548         return (WALK_NEXT);
2549 }
2550 
2551 int
2552 proc_walk_step(mdb_walk_state_t *wsp)
2553 {
2554         proc_walk_data_t *pw = wsp->walk_data;
2555         uintptr_t addr = wsp->walk_addr;
2556         uintptr_t cld, sib;
2557 
2558         int status;
2559         proc_t pr;
2560 
2561         if (mdb_vread(&pr, sizeof (proc_t), addr) == -1) {
2562                 mdb_warn("failed to read proc at %p", addr);
2563                 return (WALK_DONE);
2564         }
2565 
2566         cld = (uintptr_t)pr.p_child;
2567         sib = (uintptr_t)pr.p_sibling;
2568 
2569         if (pw->pw_depth > 0 && addr == pw->pw_stack[pw->pw_depth - 1]) {
2570                 pw->pw_depth--;
2571                 goto sib;
2572         }
2573 
2574         status = wsp->walk_callback(addr, &pr, wsp->walk_cbdata);
2575 
2576         if (status != WALK_NEXT)
2577                 return (status);
2578 
2579         if ((wsp->walk_addr = cld) != NULL) {
2580                 if (mdb_vread(&pr, sizeof (proc_t), cld) == -1) {
2581                         mdb_warn("proc %p has invalid p_child %p; skipping\n",
2582                             addr, cld);
2583                         goto sib;
2584                 }
2585 
2586                 pw->pw_stack[pw->pw_depth++] = addr;
2587 
2588                 if (pw->pw_depth == pw->pw_max) {
2589                         mdb_warn("depth %d exceeds max depth; try again\n",
2590                             pw->pw_depth);
2591                         return (WALK_DONE);
2592                 }
2593                 return (WALK_NEXT);
2594         }
2595 
2596 sib:
2597         /*
2598          * We know that p0 has no siblings, and if another starting proc
2599          * was given, we don't want to walk its siblings anyway.
2600          */
2601         if (pw->pw_depth == 0)
2602                 return (WALK_DONE);
2603 
2604         if (sib != NULL && mdb_vread(&pr, sizeof (proc_t), sib) == -1) {
2605                 mdb_warn("proc %p has invalid p_sibling %p; skipping\n",
2606                     addr, sib);
2607                 sib = NULL;
2608         }
2609 
2610         if ((wsp->walk_addr = sib) == NULL) {
2611                 if (pw->pw_depth > 0) {
2612                         wsp->walk_addr = pw->pw_stack[pw->pw_depth - 1];
2613                         return (WALK_NEXT);
2614                 }
2615                 return (WALK_DONE);
2616         }
2617 
2618         return (WALK_NEXT);
2619 }
2620 
2621 void
2622 proc_walk_fini(mdb_walk_state_t *wsp)
2623 {
2624         proc_walk_data_t *pw = wsp->walk_data;
2625 
2626         mdb_free(pw->pw_stack, pw->pw_max * sizeof (uintptr_t));
2627         mdb_free(pw, sizeof (proc_walk_data_t));
2628 }
2629 
2630 int
2631 task_walk_init(mdb_walk_state_t *wsp)
2632 {
2633         task_t task;
2634 
2635         if (mdb_vread(&task, sizeof (task_t), wsp->walk_addr) == -1) {
2636                 mdb_warn("failed to read task at %p", wsp->walk_addr);
2637                 return (WALK_ERR);
2638         }
2639         wsp->walk_addr = (uintptr_t)task.tk_memb_list;
2640         wsp->walk_data = task.tk_memb_list;
2641         return (WALK_NEXT);
2642 }
2643 
2644 int
2645 task_walk_step(mdb_walk_state_t *wsp)
2646 {
2647         proc_t proc;
2648         int status;
2649 
2650         if (mdb_vread(&proc, sizeof (proc_t), wsp->walk_addr) == -1) {
2651                 mdb_warn("failed to read proc at %p", wsp->walk_addr);
2652                 return (WALK_DONE);
2653         }
2654 
2655         status = wsp->walk_callback(wsp->walk_addr, NULL, wsp->walk_cbdata);
2656 
2657         if (proc.p_tasknext == wsp->walk_data)
2658                 return (WALK_DONE);
2659 
2660         wsp->walk_addr = (uintptr_t)proc.p_tasknext;
2661         return (status);
2662 }
2663 
2664 int
2665 project_walk_init(mdb_walk_state_t *wsp)
2666 {
2667         if (wsp->walk_addr == NULL) {
2668                 if (mdb_readvar(&wsp->walk_addr, "proj0p") == -1) {
2669                         mdb_warn("failed to read 'proj0p'");
2670                         return (WALK_ERR);
2671                 }
2672         }
2673         wsp->walk_data = (void *)wsp->walk_addr;
2674         return (WALK_NEXT);
2675 }
2676 
2677 int
2678 project_walk_step(mdb_walk_state_t *wsp)
2679 {
2680         uintptr_t addr = wsp->walk_addr;
2681         kproject_t pj;
2682         int status;
2683 
2684         if (mdb_vread(&pj, sizeof (kproject_t), addr) == -1) {
2685                 mdb_warn("failed to read project at %p", addr);
2686                 return (WALK_DONE);
2687         }
2688         status = wsp->walk_callback(addr, &pj, wsp->walk_cbdata);
2689         if (status != WALK_NEXT)
2690                 return (status);
2691         wsp->walk_addr = (uintptr_t)pj.kpj_next;
2692         if ((void *)wsp->walk_addr == wsp->walk_data)
2693                 return (WALK_DONE);
2694         return (WALK_NEXT);
2695 }
2696 
2697 static int
2698 generic_walk_step(mdb_walk_state_t *wsp)
2699 {
2700         return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
2701             wsp->walk_cbdata));
2702 }
2703 
2704 static int
2705 cpu_walk_cmp(const void *l, const void *r)
2706 {
2707         uintptr_t lhs = *((uintptr_t *)l);
2708         uintptr_t rhs = *((uintptr_t *)r);
2709         cpu_t lcpu, rcpu;
2710 
2711         (void) mdb_vread(&lcpu, sizeof (lcpu), lhs);
2712         (void) mdb_vread(&rcpu, sizeof (rcpu), rhs);
2713 
2714         if (lcpu.cpu_id < rcpu.cpu_id)
2715                 return (-1);
2716 
2717         if (lcpu.cpu_id > rcpu.cpu_id)
2718                 return (1);
2719 
2720         return (0);
2721 }
2722 
2723 typedef struct cpu_walk {
2724         uintptr_t *cw_array;
2725         int cw_ndx;
2726 } cpu_walk_t;
2727 
2728 int
2729 cpu_walk_init(mdb_walk_state_t *wsp)
2730 {
2731         cpu_walk_t *cw;
2732         int max_ncpus, i = 0;
2733         uintptr_t current, first;
2734         cpu_t cpu, panic_cpu;
2735         uintptr_t panicstr, addr;
2736         GElf_Sym sym;
2737 
2738         cw = mdb_zalloc(sizeof (cpu_walk_t), UM_SLEEP | UM_GC);
2739 
2740         if (mdb_readvar(&max_ncpus, "max_ncpus") == -1) {
2741                 mdb_warn("failed to read 'max_ncpus'");
2742                 return (WALK_ERR);
2743         }
2744 
2745         if (mdb_readvar(&panicstr, "panicstr") == -1) {
2746                 mdb_warn("failed to read 'panicstr'");
2747                 return (WALK_ERR);
2748         }
2749 
2750         if (panicstr != NULL) {
2751                 if (mdb_lookup_by_name("panic_cpu", &sym) == -1) {
2752                         mdb_warn("failed to find 'panic_cpu'");
2753                         return (WALK_ERR);
2754                 }
2755 
2756                 addr = (uintptr_t)sym.st_value;
2757 
2758                 if (mdb_vread(&panic_cpu, sizeof (cpu_t), addr) == -1) {
2759                         mdb_warn("failed to read 'panic_cpu'");
2760                         return (WALK_ERR);
2761                 }
2762         }
2763 
2764         /*
2765          * Unfortunately, there is no platform-independent way to walk
2766          * CPUs in ID order.  We therefore loop through in cpu_next order,
2767          * building an array of CPU pointers which will subsequently be
2768          * sorted.
2769          */
2770         cw->cw_array =
2771             mdb_zalloc((max_ncpus + 1) * sizeof (uintptr_t), UM_SLEEP | UM_GC);
2772 
2773         if (mdb_readvar(&first, "cpu_list") == -1) {
2774                 mdb_warn("failed to read 'cpu_list'");
2775                 return (WALK_ERR);
2776         }
2777 
2778         current = first;
2779         do {
2780                 if (mdb_vread(&cpu, sizeof (cpu), current) == -1) {
2781                         mdb_warn("failed to read cpu at %p", current);
2782                         return (WALK_ERR);
2783                 }
2784 
2785                 if (panicstr != NULL && panic_cpu.cpu_id == cpu.cpu_id) {
2786                         cw->cw_array[i++] = addr;
2787                 } else {
2788                         cw->cw_array[i++] = current;
2789                 }
2790         } while ((current = (uintptr_t)cpu.cpu_next) != first);
2791 
2792         qsort(cw->cw_array, i, sizeof (uintptr_t), cpu_walk_cmp);
2793         wsp->walk_data = cw;
2794 
2795         return (WALK_NEXT);
2796 }
2797 
2798 int
2799 cpu_walk_step(mdb_walk_state_t *wsp)
2800 {
2801         cpu_walk_t *cw = wsp->walk_data;
2802         cpu_t cpu;
2803         uintptr_t addr = cw->cw_array[cw->cw_ndx++];
2804 
2805         if (addr == NULL)
2806                 return (WALK_DONE);
2807 
2808         if (mdb_vread(&cpu, sizeof (cpu), addr) == -1) {
2809                 mdb_warn("failed to read cpu at %p", addr);
2810                 return (WALK_DONE);
2811         }
2812 
2813         return (wsp->walk_callback(addr, &cpu, wsp->walk_cbdata));
2814 }
2815 
2816 typedef struct cpuinfo_data {
2817         intptr_t cid_cpu;
2818         uintptr_t **cid_ithr;
2819         char    cid_print_head;
2820         char    cid_print_thr;
2821         char    cid_print_ithr;
2822         char    cid_print_flags;
2823 } cpuinfo_data_t;
2824 
2825 int
2826 cpuinfo_walk_ithread(uintptr_t addr, const kthread_t *thr, cpuinfo_data_t *cid)
2827 {
2828         cpu_t c;
2829         int id;
2830         uint8_t pil;
2831 
2832         if (!(thr->t_flag & T_INTR_THREAD) || thr->t_state == TS_FREE)
2833                 return (WALK_NEXT);
2834 
2835         if (thr->t_bound_cpu == NULL) {
2836                 mdb_warn("thr %p is intr thread w/out a CPU\n", addr);
2837                 return (WALK_NEXT);
2838         }
2839 
2840         (void) mdb_vread(&c, sizeof (c), (uintptr_t)thr->t_bound_cpu);
2841 
2842         if ((id = c.cpu_id) >= NCPU) {
2843                 mdb_warn("CPU %p has id (%d) greater than NCPU (%d)\n",
2844                     thr->t_bound_cpu, id, NCPU);
2845                 return (WALK_NEXT);
2846         }
2847 
2848         if ((pil = thr->t_pil) >= NINTR) {
2849                 mdb_warn("thread %p has pil (%d) greater than %d\n",
2850                     addr, pil, NINTR);
2851                 return (WALK_NEXT);
2852         }
2853 
2854         if (cid->cid_ithr[id][pil] != NULL) {
2855                 mdb_warn("CPU %d has multiple threads at pil %d (at least "
2856                     "%p and %p)\n", id, pil, addr, cid->cid_ithr[id][pil]);
2857                 return (WALK_NEXT);
2858         }
2859 
2860         cid->cid_ithr[id][pil] = addr;
2861 
2862         return (WALK_NEXT);
2863 }
2864 
2865 #define CPUINFO_IDWIDTH         3
2866 #define CPUINFO_FLAGWIDTH       9
2867 
2868 #ifdef _LP64
2869 #if defined(__amd64)
2870 #define CPUINFO_TWIDTH          16
2871 #define CPUINFO_CPUWIDTH        16
2872 #else
2873 #define CPUINFO_CPUWIDTH        11
2874 #define CPUINFO_TWIDTH          11
2875 #endif
2876 #else
2877 #define CPUINFO_CPUWIDTH        8
2878 #define CPUINFO_TWIDTH          8
2879 #endif
2880 
2881 #define CPUINFO_THRDELT         (CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH + 9)
2882 #define CPUINFO_FLAGDELT        (CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH + 4)
2883 #define CPUINFO_ITHRDELT        4
2884 
2885 #define CPUINFO_INDENT  mdb_printf("%*s", CPUINFO_THRDELT, \
2886     flagline < nflaglines ? flagbuf[flagline++] : "")
2887 
2888 int
2889 cpuinfo_walk_cpu(uintptr_t addr, const cpu_t *cpu, cpuinfo_data_t *cid)
2890 {
2891         kthread_t t;
2892         disp_t disp;
2893         proc_t p;
2894         uintptr_t pinned;
2895         char **flagbuf;
2896         int nflaglines = 0, flagline = 0, bspl, rval = WALK_NEXT;
2897 
2898         const char *flags[] = {
2899             "RUNNING", "READY", "QUIESCED", "EXISTS",
2900             "ENABLE", "OFFLINE", "POWEROFF", "FROZEN",
2901             "SPARE", "FAULTED", NULL
2902         };
2903 
2904         if (cid->cid_cpu != -1) {
2905                 if (addr != cid->cid_cpu && cpu->cpu_id != cid->cid_cpu)
2906                         return (WALK_NEXT);
2907 
2908                 /*
2909                  * Set cid_cpu to -1 to indicate that we found a matching CPU.
2910                  */
2911                 cid->cid_cpu = -1;
2912                 rval = WALK_DONE;
2913         }
2914 
2915         if (cid->cid_print_head) {
2916                 mdb_printf("%3s %-*s %3s %4s %4s %3s %4s %5s %-6s %-*s %s\n",
2917                     "ID", CPUINFO_CPUWIDTH, "ADDR", "FLG", "NRUN", "BSPL",
2918                     "PRI", "RNRN", "KRNRN", "SWITCH", CPUINFO_TWIDTH, "THREAD",
2919                     "PROC");
2920                 cid->cid_print_head = FALSE;
2921         }
2922 
2923         bspl = cpu->cpu_base_spl;
2924 
2925         if (mdb_vread(&disp, sizeof (disp_t), (uintptr_t)cpu->cpu_disp) == -1) {
2926                 mdb_warn("failed to read disp_t at %p", cpu->cpu_disp);
2927                 return (WALK_ERR);
2928         }
2929 
2930         mdb_printf("%3d %0*p %3x %4d %4d ",
2931             cpu->cpu_id, CPUINFO_CPUWIDTH, addr, cpu->cpu_flags,
2932             disp.disp_nrunnable, bspl);
2933 
2934         if (mdb_vread(&t, sizeof (t), (uintptr_t)cpu->cpu_thread) != -1) {
2935                 mdb_printf("%3d ", t.t_pri);
2936         } else {
2937                 mdb_printf("%3s ", "-");
2938         }
2939 
2940         mdb_printf("%4s %5s ", cpu->cpu_runrun ? "yes" : "no",
2941             cpu->cpu_kprunrun ? "yes" : "no");
2942 
2943         if (cpu->cpu_last_swtch) {
2944                 mdb_printf("t-%-4d ",
2945                     (clock_t)mdb_get_lbolt() - cpu->cpu_last_swtch);
2946         } else {
2947                 mdb_printf("%-6s ", "-");
2948         }
2949 
2950         mdb_printf("%0*p", CPUINFO_TWIDTH, cpu->cpu_thread);
2951 
2952         if (cpu->cpu_thread == cpu->cpu_idle_thread)
2953                 mdb_printf(" (idle)\n");
2954         else if (cpu->cpu_thread == NULL)
2955                 mdb_printf(" -\n");
2956         else {
2957                 if (mdb_vread(&p, sizeof (p), (uintptr_t)t.t_procp) != -1) {
2958                         mdb_printf(" %s\n", p.p_user.u_comm);
2959                 } else {
2960                         mdb_printf(" ?\n");
2961                 }
2962         }
2963 
2964         flagbuf = mdb_zalloc(sizeof (flags), UM_SLEEP | UM_GC);
2965 
2966         if (cid->cid_print_flags) {
2967                 int first = 1, i, j, k;
2968                 char *s;
2969 
2970                 cid->cid_print_head = TRUE;
2971 
2972                 for (i = 1, j = 0; flags[j] != NULL; i <<= 1, j++) {
2973                         if (!(cpu->cpu_flags & i))
2974                                 continue;
2975 
2976                         if (first) {
2977                                 s = mdb_alloc(CPUINFO_THRDELT + 1,
2978                                     UM_GC | UM_SLEEP);
2979 
2980                                 (void) mdb_snprintf(s, CPUINFO_THRDELT + 1,
2981                                     "%*s|%*s", CPUINFO_FLAGDELT, "",
2982                                     CPUINFO_THRDELT - 1 - CPUINFO_FLAGDELT, "");
2983                                 flagbuf[nflaglines++] = s;
2984                         }
2985 
2986                         s = mdb_alloc(CPUINFO_THRDELT + 1, UM_GC | UM_SLEEP);
2987                         (void) mdb_snprintf(s, CPUINFO_THRDELT + 1, "%*s%*s %s",
2988                             CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH -
2989                             CPUINFO_FLAGWIDTH, "", CPUINFO_FLAGWIDTH, flags[j],
2990                             first ? "<--+" : "");
2991 
2992                         for (k = strlen(s); k < CPUINFO_THRDELT; k++)
2993                                 s[k] = ' ';
2994                         s[k] = '\0';
2995 
2996                         flagbuf[nflaglines++] = s;
2997                         first = 0;
2998                 }
2999         }
3000 
3001         if (cid->cid_print_ithr) {
3002                 int i, found_one = FALSE;
3003                 int print_thr = disp.disp_nrunnable && cid->cid_print_thr;
3004 
3005                 for (i = NINTR - 1; i >= 0; i--) {
3006                         uintptr_t iaddr = cid->cid_ithr[cpu->cpu_id][i];
3007 
3008                         if (iaddr == NULL)
3009                                 continue;
3010 
3011                         if (!found_one) {
3012                                 found_one = TRUE;
3013 
3014                                 CPUINFO_INDENT;
3015                                 mdb_printf("%c%*s|\n", print_thr ? '|' : ' ',
3016                                     CPUINFO_ITHRDELT, "");
3017 
3018                                 CPUINFO_INDENT;
3019                                 mdb_printf("%c%*s+--> %3s %s\n",
3020                                     print_thr ? '|' : ' ', CPUINFO_ITHRDELT,
3021                                     "", "PIL", "THREAD");
3022                         }
3023 
3024                         if (mdb_vread(&t, sizeof (t), iaddr) == -1) {
3025                                 mdb_warn("failed to read kthread_t at %p",
3026                                     iaddr);
3027                                 return (WALK_ERR);
3028                         }
3029 
3030                         CPUINFO_INDENT;
3031                         mdb_printf("%c%*s     %3d %0*p\n",
3032                             print_thr ? '|' : ' ', CPUINFO_ITHRDELT, "",
3033                             t.t_pil, CPUINFO_TWIDTH, iaddr);
3034 
3035                         pinned = (uintptr_t)t.t_intr;
3036                 }
3037 
3038                 if (found_one && pinned != NULL) {
3039                         cid->cid_print_head = TRUE;
3040                         (void) strcpy(p.p_user.u_comm, "?");
3041 
3042                         if (mdb_vread(&t, sizeof (t),
3043                             (uintptr_t)pinned) == -1) {
3044                                 mdb_warn("failed to read kthread_t at %p",
3045                                     pinned);
3046                                 return (WALK_ERR);
3047                         }
3048                         if (mdb_vread(&p, sizeof (p),
3049                             (uintptr_t)t.t_procp) == -1) {
3050                                 mdb_warn("failed to read proc_t at %p",
3051                                     t.t_procp);
3052                                 return (WALK_ERR);
3053                         }
3054 
3055                         CPUINFO_INDENT;
3056                         mdb_printf("%c%*s     %3s %0*p %s\n",
3057                             print_thr ? '|' : ' ', CPUINFO_ITHRDELT, "", "-",
3058                             CPUINFO_TWIDTH, pinned,
3059                             pinned == (uintptr_t)cpu->cpu_idle_thread ?
3060                             "(idle)" : p.p_user.u_comm);
3061                 }
3062         }
3063 
3064         if (disp.disp_nrunnable && cid->cid_print_thr) {
3065                 dispq_t *dq;
3066 
3067                 int i, npri = disp.disp_npri;
3068 
3069                 dq = mdb_alloc(sizeof (dispq_t) * npri, UM_SLEEP | UM_GC);
3070 
3071                 if (mdb_vread(dq, sizeof (dispq_t) * npri,
3072                     (uintptr_t)disp.disp_q) == -1) {
3073                         mdb_warn("failed to read dispq_t at %p", disp.disp_q);
3074                         return (WALK_ERR);
3075                 }
3076 
3077                 CPUINFO_INDENT;
3078                 mdb_printf("|\n");
3079 
3080                 CPUINFO_INDENT;
3081                 mdb_printf("+-->  %3s %-*s %s\n", "PRI",
3082                     CPUINFO_TWIDTH, "THREAD", "PROC");
3083 
3084                 for (i = npri - 1; i >= 0; i--) {
3085                         uintptr_t taddr = (uintptr_t)dq[i].dq_first;
3086 
3087                         while (taddr != NULL) {
3088                                 if (mdb_vread(&t, sizeof (t), taddr) == -1) {
3089                                         mdb_warn("failed to read kthread_t "
3090                                             "at %p", taddr);
3091                                         return (WALK_ERR);
3092                                 }
3093                                 if (mdb_vread(&p, sizeof (p),
3094                                     (uintptr_t)t.t_procp) == -1) {
3095                                         mdb_warn("failed to read proc_t at %p",
3096                                             t.t_procp);
3097                                         return (WALK_ERR);
3098                                 }
3099 
3100                                 CPUINFO_INDENT;
3101                                 mdb_printf("      %3d %0*p %s\n", t.t_pri,
3102                                     CPUINFO_TWIDTH, taddr, p.p_user.u_comm);
3103 
3104                                 taddr = (uintptr_t)t.t_link;
3105                         }
3106                 }
3107                 cid->cid_print_head = TRUE;
3108         }
3109 
3110         while (flagline < nflaglines)
3111                 mdb_printf("%s\n", flagbuf[flagline++]);
3112 
3113         if (cid->cid_print_head)
3114                 mdb_printf("\n");
3115 
3116         return (rval);
3117 }
3118 
3119 int
3120 cpuinfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3121 {
3122         uint_t verbose = FALSE;
3123         cpuinfo_data_t cid;
3124 
3125         cid.cid_print_ithr = FALSE;
3126         cid.cid_print_thr = FALSE;
3127         cid.cid_print_flags = FALSE;
3128         cid.cid_print_head = DCMD_HDRSPEC(flags) ? TRUE : FALSE;
3129         cid.cid_cpu = -1;
3130 
3131         if (flags & DCMD_ADDRSPEC)
3132                 cid.cid_cpu = addr;
3133 
3134         if (mdb_getopts(argc, argv,
3135             'v', MDB_OPT_SETBITS, TRUE, &verbose, NULL) != argc)
3136                 return (DCMD_USAGE);
3137 
3138         if (verbose) {
3139                 cid.cid_print_ithr = TRUE;
3140                 cid.cid_print_thr = TRUE;
3141                 cid.cid_print_flags = TRUE;
3142                 cid.cid_print_head = TRUE;
3143         }
3144 
3145         if (cid.cid_print_ithr) {
3146                 int i;
3147 
3148                 cid.cid_ithr = mdb_alloc(sizeof (uintptr_t **)
3149                     * NCPU, UM_SLEEP | UM_GC);
3150 
3151                 for (i = 0; i < NCPU; i++)
3152                         cid.cid_ithr[i] = mdb_zalloc(sizeof (uintptr_t *) *
3153                             NINTR, UM_SLEEP | UM_GC);
3154 
3155                 if (mdb_walk("thread", (mdb_walk_cb_t)cpuinfo_walk_ithread,
3156                     &cid) == -1) {
3157                         mdb_warn("couldn't walk thread");
3158                         return (DCMD_ERR);
3159                 }
3160         }
3161 
3162         if (mdb_walk("cpu", (mdb_walk_cb_t)cpuinfo_walk_cpu, &cid) == -1) {
3163                 mdb_warn("can't walk cpus");
3164                 return (DCMD_ERR);
3165         }
3166 
3167         if (cid.cid_cpu != -1) {
3168                 /*
3169                  * We didn't find this CPU when we walked through the CPUs
3170                  * (i.e. the address specified doesn't show up in the "cpu"
3171                  * walk).  However, the specified address may still correspond
3172                  * to a valid cpu_t (for example, if the specified address is
3173                  * the actual panicking cpu_t and not the cached panic_cpu).
3174                  * Point is:  even if we didn't find it, we still want to try
3175                  * to print the specified address as a cpu_t.
3176                  */
3177                 cpu_t cpu;
3178 
3179                 if (mdb_vread(&cpu, sizeof (cpu), cid.cid_cpu) == -1) {
3180                         mdb_warn("%p is neither a valid CPU ID nor a "
3181                             "valid cpu_t address\n", cid.cid_cpu);
3182                         return (DCMD_ERR);
3183                 }
3184 
3185                 (void) cpuinfo_walk_cpu(cid.cid_cpu, &cpu, &cid);
3186         }
3187 
3188         return (DCMD_OK);
3189 }
3190 
3191 /*ARGSUSED*/
3192 int
3193 flipone(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3194 {
3195         int i;
3196 
3197         if (!(flags & DCMD_ADDRSPEC))
3198                 return (DCMD_USAGE);
3199 
3200         for (i = 0; i < sizeof (addr) * NBBY; i++)
3201                 mdb_printf("%p\n", addr ^ (1UL << i));
3202 
3203         return (DCMD_OK);
3204 }
3205 
3206 int
3207 as2proc_walk(uintptr_t addr, const proc_t *p, struct as **asp)
3208 {
3209         if (p->p_as == *asp)
3210                 mdb_printf("%p\n", addr);
3211         return (WALK_NEXT);
3212 }
3213 
3214 /*ARGSUSED*/
3215 int
3216 as2proc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3217 {
3218         if (!(flags & DCMD_ADDRSPEC) || argc != 0)
3219                 return (DCMD_USAGE);
3220 
3221         if (mdb_walk("proc", (mdb_walk_cb_t)as2proc_walk, &addr) == -1) {
3222                 mdb_warn("failed to walk proc");
3223                 return (DCMD_ERR);
3224         }
3225 
3226         return (DCMD_OK);
3227 }
3228 
3229 /*ARGSUSED*/
3230 int
3231 ptree_walk(uintptr_t addr, const proc_t *p, void *ignored)
3232 {
3233         proc_t parent;
3234         int ident = 0;
3235         uintptr_t paddr;
3236 
3237         for (paddr = (uintptr_t)p->p_parent; paddr != NULL; ident += 5) {
3238                 mdb_vread(&parent, sizeof (parent), paddr);
3239                 paddr = (uintptr_t)parent.p_parent;
3240         }
3241 
3242         mdb_inc_indent(ident);
3243         mdb_printf("%0?p  %s\n", addr, p->p_user.u_comm);
3244         mdb_dec_indent(ident);
3245 
3246         return (WALK_NEXT);
3247 }
3248 
3249 void
3250 ptree_ancestors(uintptr_t addr, uintptr_t start)
3251 {
3252         proc_t p;
3253 
3254         if (mdb_vread(&p, sizeof (p), addr) == -1) {
3255                 mdb_warn("couldn't read ancestor at %p", addr);
3256                 return;
3257         }
3258 
3259         if (p.p_parent != NULL)
3260                 ptree_ancestors((uintptr_t)p.p_parent, start);
3261 
3262         if (addr != start)
3263                 (void) ptree_walk(addr, &p, NULL);
3264 }
3265 
3266 /*ARGSUSED*/
3267 int
3268 ptree(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3269 {
3270         if (!(flags & DCMD_ADDRSPEC))
3271                 addr = NULL;
3272         else
3273                 ptree_ancestors(addr, addr);
3274 
3275         if (mdb_pwalk("proc", (mdb_walk_cb_t)ptree_walk, NULL, addr) == -1) {
3276                 mdb_warn("couldn't walk 'proc'");
3277                 return (DCMD_ERR);
3278         }
3279 
3280         return (DCMD_OK);
3281 }
3282 
3283 /*ARGSUSED*/
3284 static int
3285 fd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3286 {
3287         int fdnum;
3288         const mdb_arg_t *argp = &argv[0];
3289         proc_t p;
3290         uf_entry_t uf;
3291 
3292         if ((flags & DCMD_ADDRSPEC) == 0) {
3293                 mdb_warn("fd doesn't give global information\n");
3294                 return (DCMD_ERR);
3295         }
3296         if (argc != 1)
3297                 return (DCMD_USAGE);
3298 
3299         if (argp->a_type == MDB_TYPE_IMMEDIATE)
3300                 fdnum = argp->a_un.a_val;
3301         else
3302                 fdnum = mdb_strtoull(argp->a_un.a_str);
3303 
3304         if (mdb_vread(&p, sizeof (struct proc), addr) == -1) {
3305                 mdb_warn("couldn't read proc_t at %p", addr);
3306                 return (DCMD_ERR);
3307         }
3308         if (fdnum > p.p_user.u_finfo.fi_nfiles) {
3309                 mdb_warn("process %p only has %d files open.\n",
3310                     addr, p.p_user.u_finfo.fi_nfiles);
3311                 return (DCMD_ERR);
3312         }
3313         if (mdb_vread(&uf, sizeof (uf_entry_t),
3314             (uintptr_t)&p.p_user.u_finfo.fi_list[fdnum]) == -1) {
3315                 mdb_warn("couldn't read uf_entry_t at %p",
3316                     &p.p_user.u_finfo.fi_list[fdnum]);
3317                 return (DCMD_ERR);
3318         }
3319 
3320         mdb_printf("%p\n", uf.uf_file);
3321         return (DCMD_OK);
3322 }
3323 
3324 /*ARGSUSED*/
3325 static int
3326 pid2proc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3327 {
3328         pid_t pid = (pid_t)addr;
3329 
3330         if (argc != 0)
3331                 return (DCMD_USAGE);
3332 
3333         if ((addr = mdb_pid2proc(pid, NULL)) == NULL) {
3334                 mdb_warn("PID 0t%d not found\n", pid);
3335                 return (DCMD_ERR);
3336         }
3337 
3338         mdb_printf("%p\n", addr);
3339         return (DCMD_OK);
3340 }
3341 
3342 static char *sysfile_cmd[] = {
3343         "exclude:",
3344         "include:",
3345         "forceload:",
3346         "rootdev:",
3347         "rootfs:",
3348         "swapdev:",
3349         "swapfs:",
3350         "moddir:",
3351         "set",
3352         "unknown",
3353 };
3354 
3355 static char *sysfile_ops[] = { "", "=", "&", "|" };
3356 
3357 /*ARGSUSED*/
3358 static int
3359 sysfile_vmem_seg(uintptr_t addr, const vmem_seg_t *vsp, void **target)
3360 {
3361         if (vsp->vs_type == VMEM_ALLOC && (void *)vsp->vs_start == *target) {
3362                 *target = NULL;
3363                 return (WALK_DONE);
3364         }
3365         return (WALK_NEXT);
3366 }
3367 
3368 /*ARGSUSED*/
3369 static int
3370 sysfile(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3371 {
3372         struct sysparam *sysp, sys;
3373         char var[256];
3374         char modname[256];
3375         char val[256];
3376         char strval[256];
3377         vmem_t *mod_sysfile_arena;
3378         void *straddr;
3379 
3380         if (mdb_readvar(&sysp, "sysparam_hd") == -1) {
3381                 mdb_warn("failed to read sysparam_hd");
3382                 return (DCMD_ERR);
3383         }
3384 
3385         if (mdb_readvar(&mod_sysfile_arena, "mod_sysfile_arena") == -1) {
3386                 mdb_warn("failed to read mod_sysfile_arena");
3387                 return (DCMD_ERR);
3388         }
3389 
3390         while (sysp != NULL) {
3391                 var[0] = '\0';
3392                 val[0] = '\0';
3393                 modname[0] = '\0';
3394                 if (mdb_vread(&sys, sizeof (sys), (uintptr_t)sysp) == -1) {
3395                         mdb_warn("couldn't read sysparam %p", sysp);
3396                         return (DCMD_ERR);
3397                 }
3398                 if (sys.sys_modnam != NULL &&
3399                     mdb_readstr(modname, 256,
3400                     (uintptr_t)sys.sys_modnam) == -1) {
3401                         mdb_warn("couldn't read modname in %p", sysp);
3402                         return (DCMD_ERR);
3403                 }
3404                 if (sys.sys_ptr != NULL &&
3405                     mdb_readstr(var, 256, (uintptr_t)sys.sys_ptr) == -1) {
3406                         mdb_warn("couldn't read ptr in %p", sysp);
3407                         return (DCMD_ERR);
3408                 }
3409                 if (sys.sys_op != SETOP_NONE) {
3410                         /*
3411                          * Is this an int or a string?  We determine this
3412                          * by checking whether straddr is contained in
3413                          * mod_sysfile_arena.  If so, the walker will set
3414                          * straddr to NULL.
3415                          */
3416                         straddr = (void *)(uintptr_t)sys.sys_info;
3417                         if (sys.sys_op == SETOP_ASSIGN &&
3418                             sys.sys_info != 0 &&
3419                             mdb_pwalk("vmem_seg",
3420                             (mdb_walk_cb_t)sysfile_vmem_seg, &straddr,
3421                             (uintptr_t)mod_sysfile_arena) == 0 &&
3422                             straddr == NULL &&
3423                             mdb_readstr(strval, 256,
3424                             (uintptr_t)sys.sys_info) != -1) {
3425                                 (void) mdb_snprintf(val, sizeof (val), "\"%s\"",
3426                                     strval);
3427                         } else {
3428                                 (void) mdb_snprintf(val, sizeof (val),
3429                                     "0x%llx [0t%llu]", sys.sys_info,
3430                                     sys.sys_info);
3431                         }
3432                 }
3433                 mdb_printf("%s %s%s%s%s%s\n", sysfile_cmd[sys.sys_type],
3434                     modname, modname[0] == '\0' ? "" : ":",
3435                     var, sysfile_ops[sys.sys_op], val);
3436 
3437                 sysp = sys.sys_next;
3438         }
3439 
3440         return (DCMD_OK);
3441 }
3442 
3443 int
3444 didmatch(uintptr_t addr, const kthread_t *thr, kt_did_t *didp)
3445 {
3446 
3447         if (*didp == thr->t_did) {
3448                 mdb_printf("%p\n", addr);
3449                 return (WALK_DONE);
3450         } else
3451                 return (WALK_NEXT);
3452 }
3453 
3454 /*ARGSUSED*/
3455 int
3456 did2thread(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3457 {
3458         const mdb_arg_t *argp = &argv[0];
3459         kt_did_t        did;
3460 
3461         if (argc != 1)
3462                 return (DCMD_USAGE);
3463 
3464         did = (kt_did_t)mdb_strtoull(argp->a_un.a_str);
3465 
3466         if (mdb_walk("thread", (mdb_walk_cb_t)didmatch, (void *)&did) == -1) {
3467                 mdb_warn("failed to walk thread");
3468                 return (DCMD_ERR);
3469 
3470         }
3471         return (DCMD_OK);
3472 
3473 }
3474 
3475 static int
3476 errorq_walk_init(mdb_walk_state_t *wsp)
3477 {
3478         if (wsp->walk_addr == NULL &&
3479             mdb_readvar(&wsp->walk_addr, "errorq_list") == -1) {
3480                 mdb_warn("failed to read errorq_list");
3481                 return (WALK_ERR);
3482         }
3483 
3484         return (WALK_NEXT);
3485 }
3486 
3487 static int
3488 errorq_walk_step(mdb_walk_state_t *wsp)
3489 {
3490         uintptr_t addr = wsp->walk_addr;
3491         errorq_t eq;
3492 
3493         if (addr == NULL)
3494                 return (WALK_DONE);
3495 
3496         if (mdb_vread(&eq, sizeof (eq), addr) == -1) {
3497                 mdb_warn("failed to read errorq at %p", addr);
3498                 return (WALK_ERR);
3499         }
3500 
3501         wsp->walk_addr = (uintptr_t)eq.eq_next;
3502         return (wsp->walk_callback(addr, &eq, wsp->walk_cbdata));
3503 }
3504 
3505 typedef struct eqd_walk_data {
3506         uintptr_t *eqd_stack;
3507         void *eqd_buf;
3508         ulong_t eqd_qpos;
3509         ulong_t eqd_qlen;
3510         size_t eqd_size;
3511 } eqd_walk_data_t;
3512 
3513 /*
3514  * In order to walk the list of pending error queue elements, we push the
3515  * addresses of the corresponding data buffers in to the eqd_stack array.
3516  * The error lists are in reverse chronological order when iterating using
3517  * eqe_prev, so we then pop things off the top in eqd_walk_step so that the
3518  * walker client gets addresses in order from oldest error to newest error.
3519  */
3520 static void
3521 eqd_push_list(eqd_walk_data_t *eqdp, uintptr_t addr)
3522 {
3523         errorq_elem_t eqe;
3524 
3525         while (addr != NULL) {
3526                 if (mdb_vread(&eqe, sizeof (eqe), addr) != sizeof (eqe)) {
3527                         mdb_warn("failed to read errorq element at %p", addr);
3528                         break;
3529                 }
3530 
3531                 if (eqdp->eqd_qpos == eqdp->eqd_qlen) {
3532                         mdb_warn("errorq is overfull -- more than %lu "
3533                             "elems found\n", eqdp->eqd_qlen);
3534                         break;
3535                 }
3536 
3537                 eqdp->eqd_stack[eqdp->eqd_qpos++] = (uintptr_t)eqe.eqe_data;
3538                 addr = (uintptr_t)eqe.eqe_prev;
3539         }
3540 }
3541 
3542 static int
3543 eqd_walk_init(mdb_walk_state_t *wsp)
3544 {
3545         eqd_walk_data_t *eqdp;
3546         errorq_elem_t eqe, *addr;
3547         errorq_t eq;
3548         ulong_t i;
3549 
3550         if (mdb_vread(&eq, sizeof (eq), wsp->walk_addr) == -1) {
3551                 mdb_warn("failed to read errorq at %p", wsp->walk_addr);
3552                 return (WALK_ERR);
3553         }
3554 
3555         if (eq.eq_ptail != NULL &&
3556             mdb_vread(&eqe, sizeof (eqe), (uintptr_t)eq.eq_ptail) == -1) {
3557                 mdb_warn("failed to read errorq element at %p", eq.eq_ptail);
3558                 return (WALK_ERR);
3559         }
3560 
3561         eqdp = mdb_alloc(sizeof (eqd_walk_data_t), UM_SLEEP);
3562         wsp->walk_data = eqdp;
3563 
3564         eqdp->eqd_stack = mdb_zalloc(sizeof (uintptr_t) * eq.eq_qlen, UM_SLEEP);
3565         eqdp->eqd_buf = mdb_alloc(eq.eq_size, UM_SLEEP);
3566         eqdp->eqd_qlen = eq.eq_qlen;
3567         eqdp->eqd_qpos = 0;
3568         eqdp->eqd_size = eq.eq_size;
3569 
3570         /*
3571          * The newest elements in the queue are on the pending list, so we
3572          * push those on to our stack first.
3573          */
3574         eqd_push_list(eqdp, (uintptr_t)eq.eq_pend);
3575 
3576         /*
3577          * If eq_ptail is set, it may point to a subset of the errors on the
3578          * pending list in the event a casptr() failed; if ptail's data is
3579          * already in our stack, NULL out eq_ptail and ignore it.
3580          */
3581         if (eq.eq_ptail != NULL) {
3582                 for (i = 0; i < eqdp->eqd_qpos; i++) {
3583                         if (eqdp->eqd_stack[i] == (uintptr_t)eqe.eqe_data) {
3584                                 eq.eq_ptail = NULL;
3585                                 break;
3586                         }
3587                 }
3588         }
3589 
3590         /*
3591          * If eq_phead is set, it has the processing list in order from oldest
3592          * to newest.  Use this to recompute eq_ptail as best we can and then
3593          * we nicely fall into eqd_push_list() of eq_ptail below.
3594          */
3595         for (addr = eq.eq_phead; addr != NULL && mdb_vread(&eqe, sizeof (eqe),
3596             (uintptr_t)addr) == sizeof (eqe); addr = eqe.eqe_next)
3597                 eq.eq_ptail = addr;
3598 
3599         /*
3600          * The oldest elements in the queue are on the processing list, subject
3601          * to machinations in the if-clauses above.  Push any such elements.
3602          */
3603         eqd_push_list(eqdp, (uintptr_t)eq.eq_ptail);
3604         return (WALK_NEXT);
3605 }
3606 
3607 static int
3608 eqd_walk_step(mdb_walk_state_t *wsp)
3609 {
3610         eqd_walk_data_t *eqdp = wsp->walk_data;
3611         uintptr_t addr;
3612 
3613         if (eqdp->eqd_qpos == 0)
3614                 return (WALK_DONE);
3615 
3616         addr = eqdp->eqd_stack[--eqdp->eqd_qpos];
3617 
3618         if (mdb_vread(eqdp->eqd_buf, eqdp->eqd_size, addr) != eqdp->eqd_size) {
3619                 mdb_warn("failed to read errorq data at %p", addr);
3620                 return (WALK_ERR);
3621         }
3622 
3623         return (wsp->walk_callback(addr, eqdp->eqd_buf, wsp->walk_cbdata));
3624 }
3625 
3626 static void
3627 eqd_walk_fini(mdb_walk_state_t *wsp)
3628 {
3629         eqd_walk_data_t *eqdp = wsp->walk_data;
3630 
3631         mdb_free(eqdp->eqd_stack, sizeof (uintptr_t) * eqdp->eqd_qlen);
3632         mdb_free(eqdp->eqd_buf, eqdp->eqd_size);
3633         mdb_free(eqdp, sizeof (eqd_walk_data_t));
3634 }
3635 
3636 #define EQKSVAL(eqv, what) (eqv.eq_kstat.what.value.ui64)
3637 
3638 static int
3639 errorq(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3640 {
3641         int i;
3642         errorq_t eq;
3643         uint_t opt_v = FALSE;
3644 
3645         if (!(flags & DCMD_ADDRSPEC)) {
3646                 if (mdb_walk_dcmd("errorq", "errorq", argc, argv) == -1) {
3647                         mdb_warn("can't walk 'errorq'");
3648                         return (DCMD_ERR);
3649                 }
3650                 return (DCMD_OK);
3651         }
3652 
3653         i = mdb_getopts(argc, argv, 'v', MDB_OPT_SETBITS, TRUE, &opt_v, NULL);
3654         argc -= i;
3655         argv += i;
3656 
3657         if (argc != 0)
3658                 return (DCMD_USAGE);
3659 
3660         if (opt_v || DCMD_HDRSPEC(flags)) {
3661                 mdb_printf("%<u>%-11s %-16s %1s %1s %1s ",
3662                     "ADDR", "NAME", "S", "V", "N");
3663                 if (!opt_v) {
3664                         mdb_printf("%7s %7s %7s%</u>\n",
3665                             "ACCEPT", "DROP", "LOG");
3666                 } else {
3667                         mdb_printf("%5s %6s %6s %3s %16s%</u>\n",
3668                             "KSTAT", "QLEN", "SIZE", "IPL", "FUNC");
3669                 }
3670         }
3671 
3672         if (mdb_vread(&eq, sizeof (eq), addr) != sizeof (eq)) {
3673                 mdb_warn("failed to read errorq at %p", addr);
3674                 return (DCMD_ERR);
3675         }
3676 
3677         mdb_printf("%-11p %-16s %c %c %c ", addr, eq.eq_name,
3678             (eq.eq_flags & ERRORQ_ACTIVE) ? '+' : '-',
3679             (eq.eq_flags & ERRORQ_VITAL) ? '!' : ' ',
3680             (eq.eq_flags & ERRORQ_NVLIST) ? '*' : ' ');
3681 
3682         if (!opt_v) {
3683                 mdb_printf("%7llu %7llu %7llu\n",
3684                     EQKSVAL(eq, eqk_dispatched) + EQKSVAL(eq, eqk_committed),
3685                     EQKSVAL(eq, eqk_dropped) + EQKSVAL(eq, eqk_reserve_fail) +
3686                     EQKSVAL(eq, eqk_commit_fail), EQKSVAL(eq, eqk_logged));
3687         } else {
3688                 mdb_printf("%5s %6lu %6lu %3u %a\n",
3689                     "  |  ", eq.eq_qlen, eq.eq_size, eq.eq_ipl, eq.eq_func);
3690                 mdb_printf("%38s\n%41s"
3691                     "%12s %llu\n"
3692                     "%53s %llu\n"
3693                     "%53s %llu\n"
3694                     "%53s %llu\n"
3695                     "%53s %llu\n"
3696                     "%53s %llu\n"
3697                     "%53s %llu\n"
3698                     "%53s %llu\n\n",
3699                     "|", "+-> ",
3700                     "DISPATCHED",       EQKSVAL(eq, eqk_dispatched),
3701                     "DROPPED",          EQKSVAL(eq, eqk_dropped),
3702                     "LOGGED",           EQKSVAL(eq, eqk_logged),
3703                     "RESERVED",         EQKSVAL(eq, eqk_reserved),
3704                     "RESERVE FAIL",     EQKSVAL(eq, eqk_reserve_fail),
3705                     "COMMITTED",        EQKSVAL(eq, eqk_committed),
3706                     "COMMIT FAIL",      EQKSVAL(eq, eqk_commit_fail),
3707                     "CANCELLED",        EQKSVAL(eq, eqk_cancelled));
3708         }
3709 
3710         return (DCMD_OK);
3711 }
3712 
3713 /*ARGSUSED*/
3714 static int
3715 panicinfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3716 {
3717         cpu_t panic_cpu;
3718         kthread_t *panic_thread;
3719         void *buf;
3720         panic_data_t *pd;
3721         int i, n;
3722 
3723         if (!mdb_prop_postmortem) {
3724                 mdb_warn("panicinfo can only be run on a system "
3725                     "dump; see dumpadm(1M)\n");
3726                 return (DCMD_ERR);
3727         }
3728 
3729         if (flags & DCMD_ADDRSPEC || argc != 0)
3730                 return (DCMD_USAGE);
3731 
3732         if (mdb_readsym(&panic_cpu, sizeof (cpu_t), "panic_cpu") == -1)
3733                 mdb_warn("failed to read 'panic_cpu'");
3734         else
3735                 mdb_printf("%16s %?d\n", "cpu", panic_cpu.cpu_id);
3736 
3737         if (mdb_readvar(&panic_thread, "panic_thread") == -1)
3738                 mdb_warn("failed to read 'panic_thread'");
3739         else
3740                 mdb_printf("%16s %?p\n", "thread", panic_thread);
3741 
3742         buf = mdb_alloc(PANICBUFSIZE, UM_SLEEP);
3743         pd = (panic_data_t *)buf;
3744 
3745         if (mdb_readsym(buf, PANICBUFSIZE, "panicbuf") == -1 ||
3746             pd->pd_version != PANICBUFVERS) {
3747                 mdb_warn("failed to read 'panicbuf'");
3748                 mdb_free(buf, PANICBUFSIZE);
3749                 return (DCMD_ERR);
3750         }
3751 
3752         mdb_printf("%16s %s\n", "message",  (char *)buf + pd->pd_msgoff);
3753 
3754         n = (pd->pd_msgoff - (sizeof (panic_data_t) -
3755             sizeof (panic_nv_t))) / sizeof (panic_nv_t);
3756 
3757         for (i = 0; i < n; i++)
3758                 mdb_printf("%16s %?llx\n",
3759                     pd->pd_nvdata[i].pnv_name, pd->pd_nvdata[i].pnv_value);
3760 
3761         mdb_free(buf, PANICBUFSIZE);
3762         return (DCMD_OK);
3763 }
3764 
3765 /*
3766  * ::time dcmd, which will print a hires timestamp of when we entered the
3767  * debugger, or the lbolt value if used with the -l option.
3768  *
3769  */
3770 /*ARGSUSED*/
3771 static int
3772 time(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3773 {
3774         uint_t opt_dec = FALSE;
3775         uint_t opt_lbolt = FALSE;
3776         uint_t opt_hex = FALSE;
3777         const char *fmt;
3778         hrtime_t result;
3779 
3780         if (mdb_getopts(argc, argv,
3781             'd', MDB_OPT_SETBITS, TRUE, &opt_dec,
3782             'l', MDB_OPT_SETBITS, TRUE, &opt_lbolt,
3783             'x', MDB_OPT_SETBITS, TRUE, &opt_hex,
3784             NULL) != argc)
3785                 return (DCMD_USAGE);
3786 
3787         if (opt_dec && opt_hex)
3788                 return (DCMD_USAGE);
3789 
3790         result = opt_lbolt ? mdb_get_lbolt() : mdb_gethrtime();
3791         fmt =
3792             opt_hex ? "0x%llx\n" :
3793             opt_dec ? "0t%lld\n" : "%#llr\n";
3794 
3795         mdb_printf(fmt, result);
3796         return (DCMD_OK);
3797 }
3798 
3799 void
3800 time_help(void)
3801 {
3802         mdb_printf("Prints the system time in nanoseconds.\n\n"
3803             "::time will return the timestamp at which we dropped into, \n"
3804             "if called from, kmdb(1); the core dump's high resolution \n"
3805             "time if inspecting one; or the running hires time if we're \n"
3806             "looking at a live system.\n\n"
3807             "Switches:\n"
3808             "  -d   report times in decimal\n"
3809             "  -l   prints the number of clock ticks since system boot\n"
3810             "  -x   report times in hexadecimal\n");
3811 }
3812 
3813 static const mdb_dcmd_t dcmds[] = {
3814 
3815         /* from genunix.c */
3816         { "as2proc", ":", "convert as to proc_t address", as2proc },
3817         { "binding_hash_entry", ":", "print driver names hash table entry",
3818                 binding_hash_entry },
3819         { "callout", "?[-r|n] [-s|l] [-xhB] [-t | -ab nsec [-dkD]]"
3820             " [-C addr | -S seqid] [-f name|addr] [-p name| addr] [-T|L [-E]]"
3821             " [-FivVA]",
3822             "display callouts", callout, callout_help },
3823         { "calloutid", "[-d|v] xid", "print callout by extended id",
3824             calloutid, calloutid_help },
3825         { "class", NULL, "print process scheduler classes", class },
3826         { "cpuinfo", "?[-v]", "print CPUs and runnable threads", cpuinfo },
3827         { "did2thread", "? kt_did", "find kernel thread for this id",
3828                 did2thread },
3829         { "errorq", "?[-v]", "display kernel error queues", errorq },
3830         { "fd", ":[fd num]", "get a file pointer from an fd", fd },
3831         { "flipone", ":", "the vik_rev_level 2 special", flipone },
3832         { "lminfo", NULL, "print lock manager information", lminfo },
3833         { "ndi_event_hdl", "?", "print ndi_event_hdl", ndi_event_hdl },
3834         { "panicinfo", NULL, "print panic information", panicinfo },
3835         { "pid2proc", "?", "convert PID to proc_t address", pid2proc },
3836         { "project", NULL, "display kernel project(s)", project },
3837         { "ps", "[-fltzTP]", "list processes (and associated thr,lwp)", ps },
3838         { "pgrep", "[-x] [-n | -o] pattern",
3839                 "pattern match against all processes", pgrep },
3840         { "ptree", NULL, "print process tree", ptree },
3841         { "sysevent", "?[-sv]", "print sysevent pending or sent queue",
3842                 sysevent},
3843         { "sysevent_channel", "?", "print sysevent channel database",
3844                 sysevent_channel},
3845         { "sysevent_class_list", ":", "print sysevent class list",
3846                 sysevent_class_list},
3847         { "sysevent_subclass_list", ":",
3848                 "print sysevent subclass list", sysevent_subclass_list},
3849         { "system", NULL, "print contents of /etc/system file", sysfile },
3850         { "task", NULL, "display kernel task(s)", task },
3851         { "time", "[-dlx]", "display system time", time, time_help },
3852         { "vnode2path", ":[-F]", "vnode address to pathname", vnode2path },
3853         { "whereopen", ":", "given a vnode, dumps procs which have it open",
3854             whereopen },
3855 
3856         /* from bio.c */
3857         { "bufpagefind", ":addr", "find page_t on buf_t list", bufpagefind },
3858 
3859         /* from bitset.c */
3860         { "bitset", ":", "display a bitset", bitset, bitset_help },
3861 
3862         /* from contract.c */
3863         { "contract", "?", "display a contract", cmd_contract },
3864         { "ctevent", ":", "display a contract event", cmd_ctevent },
3865         { "ctid", ":", "convert id to a contract pointer", cmd_ctid },
3866 
3867         /* from cpupart.c */
3868         { "cpupart", "?[-v]", "print cpu partition info", cpupart },
3869 
3870         /* from cred.c */
3871         { "cred", ":[-v]", "display a credential", cmd_cred },
3872         { "credgrp", ":[-v]", "display cred_t groups", cmd_credgrp },
3873         { "credsid", ":[-v]", "display a credsid_t", cmd_credsid },
3874         { "ksidlist", ":[-v]", "display a ksidlist_t", cmd_ksidlist },
3875 
3876         /* from cyclic.c */
3877         { "cyccover", NULL, "dump cyclic coverage information", cyccover },
3878         { "cycid", "?", "dump a cyclic id", cycid },
3879         { "cycinfo", "?", "dump cyc_cpu info", cycinfo },
3880         { "cyclic", ":", "developer information", cyclic },
3881         { "cyctrace", "?", "dump cyclic trace buffer", cyctrace },
3882 
3883         /* from damap.c */
3884         { "damap", ":", "display a damap_t", damap, damap_help },
3885 
3886         /* from ddi_periodic.c */
3887         { "ddi_periodic", "?[-v]", "dump ddi_periodic_impl_t info", dprinfo },
3888 
3889         /* from devinfo.c */
3890         { "devbindings", "?[-qs] [device-name | major-num]",
3891             "print devinfo nodes bound to device-name or major-num",
3892             devbindings, devinfo_help },
3893         { "devinfo", ":[-qs]", "detailed devinfo of one node", devinfo,
3894             devinfo_help },
3895         { "devinfo_audit", ":[-v]", "devinfo configuration audit record",
3896             devinfo_audit },
3897         { "devinfo_audit_log", "?[-v]", "system wide devinfo configuration log",
3898             devinfo_audit_log },
3899         { "devinfo_audit_node", ":[-v]", "devinfo node configuration history",
3900             devinfo_audit_node },
3901         { "devinfo2driver", ":", "find driver name for this devinfo node",
3902             devinfo2driver },
3903         { "devnames", "?[-vm] [num]", "print devnames array", devnames },
3904         { "dev2major", "?<dev_t>", "convert dev_t to a major number",
3905             dev2major },
3906         { "dev2minor", "?<dev_t>", "convert dev_t to a minor number",
3907             dev2minor },
3908         { "devt", "?<dev_t>", "display a dev_t's major and minor numbers",
3909             devt },
3910         { "major2name", "?<major-num>", "convert major number to dev name",
3911             major2name },
3912         { "minornodes", ":", "given a devinfo node, print its minor nodes",
3913             minornodes },
3914         { "modctl2devinfo", ":", "given a modctl, list its devinfos",
3915             modctl2devinfo },
3916         { "name2major", "<dev-name>", "convert dev name to major number",
3917             name2major },
3918         { "prtconf", "?[-vpc]", "print devinfo tree", prtconf, prtconf_help },
3919         { "softstate", ":<instance>", "retrieve soft-state pointer",
3920             softstate },
3921         { "devinfo_fm", ":", "devinfo fault managment configuration",
3922             devinfo_fm },
3923         { "devinfo_fmce", ":", "devinfo fault managment cache entry",
3924             devinfo_fmce},
3925 
3926         /* from findstack.c */
3927         { "findstack", ":[-v]", "find kernel thread stack", findstack },
3928         { "findstack_debug", NULL, "toggle findstack debugging",
3929                 findstack_debug },
3930         { "stacks", "?[-afiv] [-c func] [-C func] [-m module] [-M module] "
3931                 "[-s sobj | -S sobj] [-t tstate | -T tstate]",
3932                 "print unique kernel thread stacks",
3933                 stacks, stacks_help },
3934 
3935         /* from fm.c */
3936         { "ereport", "[-v]", "print ereports logged in dump",
3937             ereport },
3938 
3939         /* from group.c */
3940         { "group", "?[-q]", "display a group", group},
3941 
3942         /* from hotplug.c */
3943         { "hotplug", "?[-p]", "display a registered hotplug attachment",
3944             hotplug, hotplug_help },
3945 
3946         /* from irm.c */
3947         { "irmpools", NULL, "display interrupt pools", irmpools_dcmd },
3948         { "irmreqs", NULL, "display interrupt requests in an interrupt pool",
3949             irmreqs_dcmd },
3950         { "irmreq", NULL, "display an interrupt request", irmreq_dcmd },
3951 
3952         /* from kgrep.c + genunix.c */
3953         { "kgrep", KGREP_USAGE, "search kernel as for a pointer", kgrep,
3954                 kgrep_help },
3955 
3956         /* from kmem.c */
3957         { "allocdby", ":", "given a thread, print its allocated buffers",
3958                 allocdby },
3959         { "bufctl", ":[-vh] [-a addr] [-c caller] [-e earliest] [-l latest] "
3960                 "[-t thd]", "print or filter a bufctl", bufctl, bufctl_help },
3961         { "freedby", ":", "given a thread, print its freed buffers", freedby },
3962         { "kmalog", "?[ fail | slab ]",
3963             "display kmem transaction log and stack traces", kmalog },
3964         { "kmastat", NULL, "kernel memory allocator stats", kmastat },
3965         { "kmausers", "?[-ef] [cache ...]", "current medium and large users "
3966                 "of the kmem allocator", kmausers, kmausers_help },
3967         { "kmem_cache", "?[-n name]",
3968                 "print kernel memory caches", kmem_cache, kmem_cache_help},
3969         { "kmem_slabs", "?[-v] [-n cache] [-N cache] [-b maxbins] "
3970                 "[-B minbinsize]", "display slab usage per kmem cache",
3971                 kmem_slabs, kmem_slabs_help },
3972         { "kmem_debug", NULL, "toggle kmem dcmd/walk debugging", kmem_debug },
3973         { "kmem_log", "?[-b]", "dump kmem transaction log", kmem_log },
3974         { "kmem_verify", "?", "check integrity of kmem-managed memory",
3975                 kmem_verify },
3976         { "vmem", "?", "print a vmem_t", vmem },
3977         { "vmem_seg", ":[-sv] [-c caller] [-e earliest] [-l latest] "
3978                 "[-m minsize] [-M maxsize] [-t thread] [-T type]",
3979                 "print or filter a vmem_seg", vmem_seg, vmem_seg_help },
3980         { "whatthread", ":[-v]", "print threads whose stack contains the "
3981                 "given address", whatthread },
3982 
3983         /* from ldi.c */
3984         { "ldi_handle", "?[-i]", "display a layered driver handle",
3985             ldi_handle, ldi_handle_help },
3986         { "ldi_ident", NULL, "display a layered driver identifier",
3987             ldi_ident, ldi_ident_help },
3988 
3989         /* from leaky.c + leaky_subr.c */
3990         { "findleaks", FINDLEAKS_USAGE,
3991             "search for potential kernel memory leaks", findleaks,
3992             findleaks_help },
3993 
3994         /* from lgrp.c */
3995         { "lgrp", "?[-q] [-p | -Pih]", "display an lgrp", lgrp},
3996         { "lgrp_set", "", "display bitmask of lgroups as a list", lgrp_set},
3997 
3998         /* from log.c */
3999         { "msgbuf", "?[-v]", "print most recent console messages", msgbuf },
4000 
4001         /* from mdi.c */
4002         { "mdipi", NULL, "given a path, dump mdi_pathinfo "
4003                 "and detailed pi_prop list", mdipi },
4004         { "mdiprops", NULL, "given a pi_prop, dump the pi_prop list",
4005                 mdiprops },
4006         { "mdiphci", NULL, "given a phci, dump mdi_phci and "
4007                 "list all paths", mdiphci },
4008         { "mdivhci", NULL, "given a vhci, dump mdi_vhci and list "
4009                 "all phcis", mdivhci },
4010         { "mdiclient_paths", NULL, "given a path, walk mdi_pathinfo "
4011                 "client links", mdiclient_paths },
4012         { "mdiphci_paths", NULL, "given a path, walk through mdi_pathinfo "
4013                 "phci links", mdiphci_paths },
4014         { "mdiphcis", NULL, "given a phci, walk through mdi_phci ph_next links",
4015                 mdiphcis },
4016 
4017         /* from memory.c */
4018         { "addr2smap", ":[offset]", "translate address to smap", addr2smap },
4019         { "memlist", "?[-iav]", "display a struct memlist", memlist },
4020         { "memstat", NULL, "display memory usage summary", memstat },
4021         { "page", "?", "display a summarized page_t", page },
4022         { "pagelookup", "?[-v vp] [-o offset]",
4023                 "find the page_t with the name {vp, offset}",
4024                 pagelookup, pagelookup_help },
4025         { "page_num2pp", ":", "find the page_t for a given page frame number",
4026                 page_num2pp },
4027         { "pmap", ":[-q]", "print process memory map", pmap },
4028         { "seg", ":", "print address space segment", seg },
4029         { "swapinfo", "?", "display a struct swapinfo", swapinfof },
4030         { "vnode2smap", ":[offset]", "translate vnode to smap", vnode2smap },
4031 
4032         /* from mmd.c */
4033         { "multidata", ":[-sv]", "display a summarized multidata_t",
4034                 multidata },
4035         { "pattbl", ":", "display a summarized multidata attribute table",
4036                 pattbl },
4037         { "pattr2multidata", ":", "print multidata pointer from pattr_t",
4038                 pattr2multidata },
4039         { "pdesc2slab", ":", "print pdesc slab pointer from pdesc_t",
4040                 pdesc2slab },
4041         { "pdesc_verify", ":", "verify integrity of a pdesc_t", pdesc_verify },
4042         { "slab2multidata", ":", "print multidata pointer from pdesc_slab_t",
4043                 slab2multidata },
4044 
4045         /* from modhash.c */
4046         { "modhash", "?[-ceht] [-k key] [-v val] [-i index]",
4047                 "display information about one or all mod_hash structures",
4048                 modhash, modhash_help },
4049         { "modent", ":[-k | -v | -t type]",
4050                 "display information about a mod_hash_entry", modent,
4051                 modent_help },
4052 
4053         /* from net.c */
4054         { "dladm", "?<sub-command> [flags]", "show data link information",
4055                 dladm, dladm_help },
4056         { "mi", ":[-p] [-d | -m]", "filter and display MI object or payload",
4057                 mi },
4058         { "netstat", "[-arv] [-f inet | inet6 | unix] [-P tcp | udp | icmp]",
4059                 "show network statistics", netstat },
4060         { "sonode", "?[-f inet | inet6 | unix | #] "
4061                 "[-t stream | dgram | raw | #] [-p #]",
4062                 "filter and display sonode", sonode },
4063 
4064         /* from netstack.c */
4065         { "netstack", "", "show stack instances", netstack },
4066         { "netstackid2netstack", ":",
4067                 "translate a netstack id to its netstack_t",
4068                 netstackid2netstack },
4069 
4070         /* from nvpair.c */
4071         { NVPAIR_DCMD_NAME, NVPAIR_DCMD_USAGE, NVPAIR_DCMD_DESCR,
4072                 nvpair_print },
4073         { NVLIST_DCMD_NAME, NVLIST_DCMD_USAGE, NVLIST_DCMD_DESCR,
4074                 print_nvlist },
4075 
4076         /* from pg.c */
4077         { "pg", "?[-q]", "display a pg", pg},
4078 
4079         /* from rctl.c */
4080         { "rctl_dict", "?", "print systemwide default rctl definitions",
4081                 rctl_dict },
4082         { "rctl_list", ":[handle]", "print rctls for the given proc",
4083                 rctl_list },
4084         { "rctl", ":[handle]", "print a rctl_t, only if it matches the handle",
4085                 rctl },
4086         { "rctl_validate", ":[-v] [-n #]", "test resource control value "
4087                 "sequence", rctl_validate },
4088 
4089         /* from sobj.c */
4090         { "rwlock", ":", "dump out a readers/writer lock", rwlock },
4091         { "mutex", ":[-f]", "dump out an adaptive or spin mutex", mutex,
4092                 mutex_help },
4093         { "sobj2ts", ":", "perform turnstile lookup on synch object", sobj2ts },
4094         { "wchaninfo", "?[-v]", "dump condition variable", wchaninfo },
4095         { "turnstile", "?", "display a turnstile", turnstile },
4096 
4097         /* from stream.c */
4098         { "mblk", ":[-q|v] [-f|F flag] [-t|T type] [-l|L|B len] [-d dbaddr]",
4099                 "print an mblk", mblk_prt, mblk_help },
4100         { "mblk_verify", "?", "verify integrity of an mblk", mblk_verify },
4101         { "mblk2dblk", ":", "convert mblk_t address to dblk_t address",
4102                 mblk2dblk },
4103         { "q2otherq", ":", "print peer queue for a given queue", q2otherq },
4104         { "q2rdq", ":", "print read queue for a given queue", q2rdq },
4105         { "q2syncq", ":", "print syncq for a given queue", q2syncq },
4106         { "q2stream", ":", "print stream pointer for a given queue", q2stream },
4107         { "q2wrq", ":", "print write queue for a given queue", q2wrq },
4108         { "queue", ":[-q|v] [-m mod] [-f flag] [-F flag] [-s syncq_addr]",
4109                 "filter and display STREAM queue", queue, queue_help },
4110         { "stdata", ":[-q|v] [-f flag] [-F flag]",
4111                 "filter and display STREAM head", stdata, stdata_help },
4112         { "str2mate", ":", "print mate of this stream", str2mate },
4113         { "str2wrq", ":", "print write queue of this stream", str2wrq },
4114         { "stream", ":", "display STREAM", stream },
4115         { "strftevent", ":", "print STREAMS flow trace event", strftevent },
4116         { "syncq", ":[-q|v] [-f flag] [-F flag] [-t type] [-T type]",
4117                 "filter and display STREAM sync queue", syncq, syncq_help },
4118         { "syncq2q", ":", "print queue for a given syncq", syncq2q },
4119 
4120         /* from taskq.c */
4121         { "taskq", ":[-atT] [-m min_maxq] [-n name]",
4122             "display a taskq", taskq, taskq_help },
4123         { "taskq_entry", ":", "display a taskq_ent_t", taskq_ent },
4124 
4125         /* from thread.c */
4126         { "thread", "?[-bdfimps]", "display a summarized kthread_t", thread,
4127                 thread_help },
4128         { "threadlist", "?[-t] [-v [count]]",
4129                 "display threads and associated C stack traces", threadlist,
4130                 threadlist_help },
4131         { "stackinfo", "?[-h|-a]", "display kthread_t stack usage", stackinfo,
4132                 stackinfo_help },
4133 
4134         /* from tsd.c */
4135         { "tsd", ":-k key", "print tsd[key-1] for this thread", ttotsd },
4136         { "tsdtot", ":", "find thread with this tsd", tsdtot },
4137 
4138         /*
4139          * typegraph does not work under kmdb, as it requires too much memory
4140          * for its internal data structures.
4141          */
4142 #ifndef _KMDB
4143         /* from typegraph.c */
4144         { "findlocks", ":", "find locks held by specified thread", findlocks },
4145         { "findfalse", "?[-v]", "find potentially falsely shared structures",
4146                 findfalse },
4147         { "typegraph", NULL, "build type graph", typegraph },
4148         { "istype", ":type", "manually set object type", istype },
4149         { "notype", ":", "manually clear object type", notype },
4150         { "whattype", ":", "determine object type", whattype },
4151 #endif
4152 
4153         /* from vfs.c */
4154         { "fsinfo", "?[-v]", "print mounted filesystems", fsinfo },
4155         { "pfiles", ":[-fp]", "print process file information", pfiles,
4156                 pfiles_help },
4157 
4158         /* from zone.c */
4159         { "zid2zone", ":", "find the zone_t with the given zone id",
4160                 zid2zone },
4161         { "zdid2zone", ":", "find the zone_t with the given zone debug id",
4162                 zdid2zone },
4163         { "zone", "?[-r [-v]]", "display kernel zone(s)", zoneprt },
4164         { "zsd", ":[-v] [zsd_key]", "display zone-specific-data entries for "
4165             "selected zones", zsd },
4166 
4167         { NULL }
4168 };
4169 
4170 static const mdb_walker_t walkers[] = {
4171 
4172         /* from genunix.c */
4173         { "callouts_bytime", "walk callouts by list chain (expiration time)",
4174                 callout_walk_init, callout_walk_step, callout_walk_fini,
4175                 (void *)CALLOUT_WALK_BYLIST },
4176         { "callouts_byid", "walk callouts by id hash chain",
4177                 callout_walk_init, callout_walk_step, callout_walk_fini,
4178                 (void *)CALLOUT_WALK_BYID },
4179         { "callout_list", "walk a callout list", callout_list_walk_init,
4180                 callout_list_walk_step, callout_list_walk_fini },
4181         { "callout_table", "walk callout table array", callout_table_walk_init,
4182                 callout_table_walk_step, callout_table_walk_fini },
4183         { "cpu", "walk cpu structures", cpu_walk_init, cpu_walk_step },
4184         { "ereportq_dump", "walk list of ereports in dump error queue",
4185                 ereportq_dump_walk_init, ereportq_dump_walk_step, NULL },
4186         { "ereportq_pend", "walk list of ereports in pending error queue",
4187                 ereportq_pend_walk_init, ereportq_pend_walk_step, NULL },
4188         { "errorq", "walk list of system error queues",
4189                 errorq_walk_init, errorq_walk_step, NULL },
4190         { "errorq_data", "walk pending error queue data buffers",
4191                 eqd_walk_init, eqd_walk_step, eqd_walk_fini },
4192         { "allfile", "given a proc pointer, list all file pointers",
4193                 file_walk_init, allfile_walk_step, file_walk_fini },
4194         { "file", "given a proc pointer, list of open file pointers",
4195                 file_walk_init, file_walk_step, file_walk_fini },
4196         { "lock_descriptor", "walk lock_descriptor_t structures",
4197                 ld_walk_init, ld_walk_step, NULL },
4198         { "lock_graph", "walk lock graph",
4199                 lg_walk_init, lg_walk_step, NULL },
4200         { "port", "given a proc pointer, list of created event ports",
4201                 port_walk_init, port_walk_step, NULL },
4202         { "portev", "given a port pointer, list of events in the queue",
4203                 portev_walk_init, portev_walk_step, portev_walk_fini },
4204         { "proc", "list of active proc_t structures",
4205                 proc_walk_init, proc_walk_step, proc_walk_fini },
4206         { "projects", "walk a list of kernel projects",
4207                 project_walk_init, project_walk_step, NULL },
4208         { "sysevent_pend", "walk sysevent pending queue",
4209                 sysevent_pend_walk_init, sysevent_walk_step,
4210                 sysevent_walk_fini},
4211         { "sysevent_sent", "walk sysevent sent queue", sysevent_sent_walk_init,
4212                 sysevent_walk_step, sysevent_walk_fini},
4213         { "sysevent_channel", "walk sysevent channel subscriptions",
4214                 sysevent_channel_walk_init, sysevent_channel_walk_step,
4215                 sysevent_channel_walk_fini},
4216         { "sysevent_class_list", "walk sysevent subscription's class list",
4217                 sysevent_class_list_walk_init, sysevent_class_list_walk_step,
4218                 sysevent_class_list_walk_fini},
4219         { "sysevent_subclass_list",
4220                 "walk sysevent subscription's subclass list",
4221                 sysevent_subclass_list_walk_init,
4222                 sysevent_subclass_list_walk_step,
4223                 sysevent_subclass_list_walk_fini},
4224         { "task", "given a task pointer, walk its processes",
4225                 task_walk_init, task_walk_step, NULL },
4226 
4227         /* from avl.c */
4228         { AVL_WALK_NAME, AVL_WALK_DESC,
4229                 avl_walk_init, avl_walk_step, avl_walk_fini },
4230 
4231         /* from bio.c */
4232         { "buf", "walk the bio buf hash",
4233                 buf_walk_init, buf_walk_step, buf_walk_fini },
4234 
4235         /* from contract.c */
4236         { "contract", "walk all contracts, or those of the specified type",
4237                 ct_walk_init, generic_walk_step, NULL },
4238         { "ct_event", "walk events on a contract event queue",
4239                 ct_event_walk_init, generic_walk_step, NULL },
4240         { "ct_listener", "walk contract event queue listeners",
4241                 ct_listener_walk_init, generic_walk_step, NULL },
4242 
4243         /* from cpupart.c */
4244         { "cpupart_cpulist", "given an cpupart_t, walk cpus in partition",
4245                 cpupart_cpulist_walk_init, cpupart_cpulist_walk_step,
4246                 NULL },
4247         { "cpupart_walk", "walk the set of cpu partitions",
4248                 cpupart_walk_init, cpupart_walk_step, NULL },
4249 
4250         /* from ctxop.c */
4251         { "ctxop", "walk list of context ops on a thread",
4252                 ctxop_walk_init, ctxop_walk_step, ctxop_walk_fini },
4253 
4254         /* from cyclic.c */
4255         { "cyccpu", "walk per-CPU cyc_cpu structures",
4256                 cyccpu_walk_init, cyccpu_walk_step, NULL },
4257         { "cycomni", "for an omnipresent cyclic, walk cyc_omni_cpu list",
4258                 cycomni_walk_init, cycomni_walk_step, NULL },
4259         { "cyctrace", "walk cyclic trace buffer",
4260                 cyctrace_walk_init, cyctrace_walk_step, cyctrace_walk_fini },
4261 
4262         /* from devinfo.c */
4263         { "binding_hash", "walk all entries in binding hash table",
4264                 binding_hash_walk_init, binding_hash_walk_step, NULL },
4265         { "devinfo", "walk devinfo tree or subtree",
4266                 devinfo_walk_init, devinfo_walk_step, devinfo_walk_fini },
4267         { "devinfo_audit_log", "walk devinfo audit system-wide log",
4268                 devinfo_audit_log_walk_init, devinfo_audit_log_walk_step,
4269                 devinfo_audit_log_walk_fini},
4270         { "devinfo_audit_node", "walk per-devinfo audit history",
4271                 devinfo_audit_node_walk_init, devinfo_audit_node_walk_step,
4272                 devinfo_audit_node_walk_fini},
4273         { "devinfo_children", "walk children of devinfo node",
4274                 devinfo_children_walk_init, devinfo_children_walk_step,
4275                 devinfo_children_walk_fini },
4276         { "devinfo_parents", "walk ancestors of devinfo node",
4277                 devinfo_parents_walk_init, devinfo_parents_walk_step,
4278                 devinfo_parents_walk_fini },
4279         { "devinfo_siblings", "walk siblings of devinfo node",
4280                 devinfo_siblings_walk_init, devinfo_siblings_walk_step, NULL },
4281         { "devi_next", "walk devinfo list",
4282                 NULL, devi_next_walk_step, NULL },
4283         { "devnames", "walk devnames array",
4284                 devnames_walk_init, devnames_walk_step, devnames_walk_fini },
4285         { "minornode", "given a devinfo node, walk minor nodes",
4286                 minornode_walk_init, minornode_walk_step, NULL },
4287         { "softstate",
4288                 "given an i_ddi_soft_state*, list all in-use driver stateps",
4289                 soft_state_walk_init, soft_state_walk_step,
4290                 NULL, NULL },
4291         { "softstate_all",
4292                 "given an i_ddi_soft_state*, list all driver stateps",
4293                 soft_state_walk_init, soft_state_all_walk_step,
4294                 NULL, NULL },
4295         { "devinfo_fmc",
4296                 "walk a fault management handle cache active list",
4297                 devinfo_fmc_walk_init, devinfo_fmc_walk_step, NULL },
4298 
4299         /* from group.c */
4300         { "group", "walk all elements of a group",
4301                 group_walk_init, group_walk_step, NULL },
4302 
4303         /* from irm.c */
4304         { "irmpools", "walk global list of interrupt pools",
4305             irmpools_walk_init, list_walk_step, list_walk_fini },
4306         { "irmreqs", "walk list of interrupt requests in an interrupt pool",
4307             irmreqs_walk_init, list_walk_step, list_walk_fini },
4308 
4309         /* from kmem.c */
4310         { "allocdby", "given a thread, walk its allocated bufctls",
4311                 allocdby_walk_init, allocdby_walk_step, allocdby_walk_fini },
4312         { "bufctl", "walk a kmem cache's bufctls",
4313                 bufctl_walk_init, kmem_walk_step, kmem_walk_fini },
4314         { "bufctl_history", "walk the available history of a bufctl",
4315                 bufctl_history_walk_init, bufctl_history_walk_step,
4316                 bufctl_history_walk_fini },
4317         { "freedby", "given a thread, walk its freed bufctls",
4318                 freedby_walk_init, allocdby_walk_step, allocdby_walk_fini },
4319         { "freectl", "walk a kmem cache's free bufctls",
4320                 freectl_walk_init, kmem_walk_step, kmem_walk_fini },
4321         { "freectl_constructed", "walk a kmem cache's constructed free bufctls",
4322                 freectl_constructed_walk_init, kmem_walk_step, kmem_walk_fini },
4323         { "freemem", "walk a kmem cache's free memory",
4324                 freemem_walk_init, kmem_walk_step, kmem_walk_fini },
4325         { "freemem_constructed", "walk a kmem cache's constructed free memory",
4326                 freemem_constructed_walk_init, kmem_walk_step, kmem_walk_fini },
4327         { "kmem", "walk a kmem cache",
4328                 kmem_walk_init, kmem_walk_step, kmem_walk_fini },
4329         { "kmem_cpu_cache", "given a kmem cache, walk its per-CPU caches",
4330                 kmem_cpu_cache_walk_init, kmem_cpu_cache_walk_step, NULL },
4331         { "kmem_hash", "given a kmem cache, walk its allocated hash table",
4332                 kmem_hash_walk_init, kmem_hash_walk_step, kmem_hash_walk_fini },
4333         { "kmem_log", "walk the kmem transaction log",
4334                 kmem_log_walk_init, kmem_log_walk_step, kmem_log_walk_fini },
4335         { "kmem_slab", "given a kmem cache, walk its slabs",
4336                 kmem_slab_walk_init, combined_walk_step, combined_walk_fini },
4337         { "kmem_slab_partial",
4338             "given a kmem cache, walk its partially allocated slabs (min 1)",
4339                 kmem_slab_walk_partial_init, combined_walk_step,
4340                 combined_walk_fini },
4341         { "vmem", "walk vmem structures in pre-fix, depth-first order",
4342                 vmem_walk_init, vmem_walk_step, vmem_walk_fini },
4343         { "vmem_alloc", "given a vmem_t, walk its allocated vmem_segs",
4344                 vmem_alloc_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4345         { "vmem_free", "given a vmem_t, walk its free vmem_segs",
4346                 vmem_free_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4347         { "vmem_postfix", "walk vmem structures in post-fix, depth-first order",
4348                 vmem_walk_init, vmem_postfix_walk_step, vmem_walk_fini },
4349         { "vmem_seg", "given a vmem_t, walk all of its vmem_segs",
4350                 vmem_seg_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4351         { "vmem_span", "given a vmem_t, walk its spanning vmem_segs",
4352                 vmem_span_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4353 
4354         /* from ldi.c */
4355         { "ldi_handle", "walk the layered driver handle hash",
4356                 ldi_handle_walk_init, ldi_handle_walk_step, NULL },
4357         { "ldi_ident", "walk the layered driver identifier hash",
4358                 ldi_ident_walk_init, ldi_ident_walk_step, NULL },
4359 
4360         /* from leaky.c + leaky_subr.c */
4361         { "leak", "given a leaked bufctl or vmem_seg, find leaks w/ same "
4362             "stack trace",
4363                 leaky_walk_init, leaky_walk_step, leaky_walk_fini },
4364         { "leakbuf", "given a leaked bufctl or vmem_seg, walk buffers for "
4365             "leaks w/ same stack trace",
4366                 leaky_walk_init, leaky_buf_walk_step, leaky_walk_fini },
4367 
4368         /* from lgrp.c */
4369         { "lgrp_cpulist", "walk CPUs in a given lgroup",
4370                 lgrp_cpulist_walk_init, lgrp_cpulist_walk_step, NULL },
4371         { "lgrptbl", "walk lgroup table",
4372                 lgrp_walk_init, lgrp_walk_step, NULL },
4373         { "lgrp_parents", "walk up lgroup lineage from given lgroup",
4374                 lgrp_parents_walk_init, lgrp_parents_walk_step, NULL },
4375         { "lgrp_rsrc_mem", "walk lgroup memory resources of given lgroup",
4376                 lgrp_rsrc_mem_walk_init, lgrp_set_walk_step, NULL },
4377         { "lgrp_rsrc_cpu", "walk lgroup CPU resources of given lgroup",
4378                 lgrp_rsrc_cpu_walk_init, lgrp_set_walk_step, NULL },
4379 
4380         /* from list.c */
4381         { LIST_WALK_NAME, LIST_WALK_DESC,
4382                 list_walk_init, list_walk_step, list_walk_fini },
4383 
4384         /* from mdi.c */
4385         { "mdipi_client_list", "Walker for mdi_pathinfo pi_client_link",
4386                 mdi_pi_client_link_walk_init,
4387                 mdi_pi_client_link_walk_step,
4388                 mdi_pi_client_link_walk_fini },
4389         { "mdipi_phci_list", "Walker for mdi_pathinfo pi_phci_link",
4390                 mdi_pi_phci_link_walk_init,
4391                 mdi_pi_phci_link_walk_step,
4392                 mdi_pi_phci_link_walk_fini },
4393         { "mdiphci_list", "Walker for mdi_phci ph_next link",
4394                 mdi_phci_ph_next_walk_init,
4395                 mdi_phci_ph_next_walk_step,
4396                 mdi_phci_ph_next_walk_fini },
4397 
4398         /* from memory.c */
4399         { "allpages", "walk all pages, including free pages",
4400                 allpages_walk_init, allpages_walk_step, allpages_walk_fini },
4401         { "anon", "given an amp, list allocated anon structures",
4402                 anon_walk_init, anon_walk_step, anon_walk_fini,
4403                 ANON_WALK_ALLOC },
4404         { "anon_all", "given an amp, list contents of all anon slots",
4405                 anon_walk_init, anon_walk_step, anon_walk_fini,
4406                 ANON_WALK_ALL },
4407         { "memlist", "walk specified memlist",
4408                 NULL, memlist_walk_step, NULL },
4409         { "page", "walk all pages, or those from the specified vnode",
4410                 page_walk_init, page_walk_step, page_walk_fini },
4411         { "seg", "given an as, list of segments",
4412                 seg_walk_init, avl_walk_step, avl_walk_fini },
4413         { "segvn_anon",
4414                 "given a struct segvn_data, list allocated anon structures",
4415                 segvn_anon_walk_init, anon_walk_step, anon_walk_fini,
4416                 ANON_WALK_ALLOC },
4417         { "segvn_anon_all",
4418                 "given a struct segvn_data, list contents of all anon slots",
4419                 segvn_anon_walk_init, anon_walk_step, anon_walk_fini,
4420                 ANON_WALK_ALL },
4421         { "segvn_pages",
4422                 "given a struct segvn_data, list resident pages in "
4423                 "offset order",
4424                 segvn_pages_walk_init, segvn_pages_walk_step,
4425                 segvn_pages_walk_fini, SEGVN_PAGES_RESIDENT },
4426         { "segvn_pages_all",
4427                 "for each offset in a struct segvn_data, give page_t pointer "
4428                 "(if resident), or NULL.",
4429                 segvn_pages_walk_init, segvn_pages_walk_step,
4430                 segvn_pages_walk_fini, SEGVN_PAGES_ALL },
4431         { "swapinfo", "walk swapinfo structures",
4432                 swap_walk_init, swap_walk_step, NULL },
4433 
4434         /* from mmd.c */
4435         { "pattr", "walk pattr_t structures", pattr_walk_init,
4436                 mmdq_walk_step, mmdq_walk_fini },
4437         { "pdesc", "walk pdesc_t structures",
4438                 pdesc_walk_init, mmdq_walk_step, mmdq_walk_fini },
4439         { "pdesc_slab", "walk pdesc_slab_t structures",
4440                 pdesc_slab_walk_init, mmdq_walk_step, mmdq_walk_fini },
4441 
4442         /* from modhash.c */
4443         { "modhash", "walk list of mod_hash structures", modhash_walk_init,
4444                 modhash_walk_step, NULL },
4445         { "modent", "walk list of entries in a given mod_hash",
4446                 modent_walk_init, modent_walk_step, modent_walk_fini },
4447         { "modchain", "walk list of entries in a given mod_hash_entry",
4448                 NULL, modchain_walk_step, NULL },
4449 
4450         /* from net.c */
4451         { "icmp", "walk ICMP control structures using MI for all stacks",
4452                 mi_payload_walk_init, mi_payload_walk_step, NULL,
4453                 &mi_icmp_arg },
4454         { "mi", "given a MI_O, walk the MI",
4455                 mi_walk_init, mi_walk_step, mi_walk_fini, NULL },
4456         { "sonode", "given a sonode, walk its children",
4457                 sonode_walk_init, sonode_walk_step, sonode_walk_fini, NULL },
4458         { "icmp_stacks", "walk all the icmp_stack_t",
4459                 icmp_stacks_walk_init, icmp_stacks_walk_step, NULL },
4460         { "tcp_stacks", "walk all the tcp_stack_t",
4461                 tcp_stacks_walk_init, tcp_stacks_walk_step, NULL },
4462         { "udp_stacks", "walk all the udp_stack_t",
4463                 udp_stacks_walk_init, udp_stacks_walk_step, NULL },
4464 
4465         /* from netstack.c */
4466         { "netstack", "walk a list of kernel netstacks",
4467                 netstack_walk_init, netstack_walk_step, NULL },
4468 
4469         /* from nvpair.c */
4470         { NVPAIR_WALKER_NAME, NVPAIR_WALKER_DESCR,
4471                 nvpair_walk_init, nvpair_walk_step, NULL },
4472 
4473         /* from rctl.c */
4474         { "rctl_dict_list", "walk all rctl_dict_entry_t's from rctl_lists",
4475                 rctl_dict_walk_init, rctl_dict_walk_step, NULL },
4476         { "rctl_set", "given a rctl_set, walk all rctls", rctl_set_walk_init,
4477                 rctl_set_walk_step, NULL },
4478         { "rctl_val", "given a rctl_t, walk all rctl_val entries associated",
4479                 rctl_val_walk_init, rctl_val_walk_step },
4480 
4481         /* from sobj.c */
4482         { "blocked", "walk threads blocked on a given sobj",
4483                 blocked_walk_init, blocked_walk_step, NULL },
4484         { "wchan", "given a wchan, list of blocked threads",
4485                 wchan_walk_init, wchan_walk_step, wchan_walk_fini },
4486 
4487         /* from stream.c */
4488         { "b_cont", "walk mblk_t list using b_cont",
4489                 mblk_walk_init, b_cont_step, mblk_walk_fini },
4490         { "b_next", "walk mblk_t list using b_next",
4491                 mblk_walk_init, b_next_step, mblk_walk_fini },
4492         { "qlink", "walk queue_t list using q_link",
4493                 queue_walk_init, queue_link_step, queue_walk_fini },
4494         { "qnext", "walk queue_t list using q_next",
4495                 queue_walk_init, queue_next_step, queue_walk_fini },
4496         { "strftblk", "given a dblk_t, walk STREAMS flow trace event list",
4497                 strftblk_walk_init, strftblk_step, strftblk_walk_fini },
4498         { "readq", "walk read queue side of stdata",
4499                 str_walk_init, strr_walk_step, str_walk_fini },
4500         { "writeq", "walk write queue side of stdata",
4501                 str_walk_init, strw_walk_step, str_walk_fini },
4502 
4503         /* from taskq.c */
4504         { "taskq_thread", "given a taskq_t, list all of its threads",
4505                 taskq_thread_walk_init,
4506                 taskq_thread_walk_step,
4507                 taskq_thread_walk_fini },
4508         { "taskq_entry", "given a taskq_t*, list all taskq_ent_t in the list",
4509                 taskq_ent_walk_init, taskq_ent_walk_step, NULL },
4510 
4511         /* from thread.c */
4512         { "deathrow", "walk threads on both lwp_ and thread_deathrow",
4513                 deathrow_walk_init, deathrow_walk_step, NULL },
4514         { "cpu_dispq", "given a cpu_t, walk threads in dispatcher queues",
4515                 cpu_dispq_walk_init, dispq_walk_step, dispq_walk_fini },
4516         { "cpupart_dispq",
4517                 "given a cpupart_t, walk threads in dispatcher queues",
4518                 cpupart_dispq_walk_init, dispq_walk_step, dispq_walk_fini },
4519         { "lwp_deathrow", "walk lwp_deathrow",
4520                 lwp_deathrow_walk_init, deathrow_walk_step, NULL },
4521         { "thread", "global or per-process kthread_t structures",
4522                 thread_walk_init, thread_walk_step, thread_walk_fini },
4523         { "thread_deathrow", "walk threads on thread_deathrow",
4524                 thread_deathrow_walk_init, deathrow_walk_step, NULL },
4525 
4526         /* from tsd.c */
4527         { "tsd", "walk list of thread-specific data",
4528                 tsd_walk_init, tsd_walk_step, tsd_walk_fini },
4529 
4530         /* from tsol.c */
4531         { "tnrh", "walk remote host cache structures",
4532             tnrh_walk_init, tnrh_walk_step, tnrh_walk_fini },
4533         { "tnrhtp", "walk remote host template structures",
4534             tnrhtp_walk_init, tnrhtp_walk_step, tnrhtp_walk_fini },
4535 
4536         /*
4537          * typegraph does not work under kmdb, as it requires too much memory
4538          * for its internal data structures.
4539          */
4540 #ifndef _KMDB
4541         /* from typegraph.c */
4542         { "typeconflict", "walk buffers with conflicting type inferences",
4543                 typegraph_walk_init, typeconflict_walk_step },
4544         { "typeunknown", "walk buffers with unknown types",
4545                 typegraph_walk_init, typeunknown_walk_step },
4546 #endif
4547 
4548         /* from vfs.c */
4549         { "vfs", "walk file system list",
4550                 vfs_walk_init, vfs_walk_step },
4551 
4552         /* from zone.c */
4553         { "zone", "walk a list of kernel zones",
4554                 zone_walk_init, zone_walk_step, NULL },
4555         { "zsd", "walk list of zsd entries for a zone",
4556                 zsd_walk_init, zsd_walk_step, NULL },
4557 
4558         { NULL }
4559 };
4560 
4561 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers };
4562 
4563 /*ARGSUSED*/
4564 static void
4565 genunix_statechange_cb(void *ignored)
4566 {
4567         /*
4568          * Force ::findleaks and ::stacks to let go any cached state.
4569          */
4570         leaky_cleanup(1);
4571         stacks_cleanup(1);
4572 
4573         kmem_statechange();     /* notify kmem */
4574 }
4575 
4576 const mdb_modinfo_t *
4577 _mdb_init(void)
4578 {
4579         kmem_init();
4580 
4581         (void) mdb_callback_add(MDB_CALLBACK_STCHG,
4582             genunix_statechange_cb, NULL);
4583 
4584         return (&modinfo);
4585 }
4586 
4587 void
4588 _mdb_fini(void)
4589 {
4590         leaky_cleanup(1);
4591         stacks_cleanup(1);
4592 }