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  */
  25 
  26 #include <mdb/mdb_param.h>
  27 #include <mdb/mdb_modapi.h>
  28 #include <mdb/mdb_ks.h>
  29 #include <mdb/mdb_ctf.h>
  30 
  31 #include <sys/types.h>
  32 #include <sys/thread.h>
  33 #include <sys/session.h>
  34 #include <sys/user.h>
  35 #include <sys/proc.h>
  36 #include <sys/var.h>
  37 #include <sys/t_lock.h>
  38 #include <sys/callo.h>
  39 #include <sys/priocntl.h>
  40 #include <sys/class.h>
  41 #include <sys/regset.h>
  42 #include <sys/stack.h>
  43 #include <sys/cpuvar.h>
  44 #include <sys/vnode.h>
  45 #include <sys/vfs.h>
  46 #include <sys/flock_impl.h>
  47 #include <sys/kmem_impl.h>
  48 #include <sys/vmem_impl.h>
  49 #include <sys/kstat.h>
  50 #include <sys/dditypes.h>
  51 #include <sys/ddi_impldefs.h>
  52 #include <sys/sysmacros.h>
  53 #include <sys/sysconf.h>
  54 #include <sys/task.h>
  55 #include <sys/project.h>
  56 #include <sys/errorq_impl.h>
  57 #include <sys/cred_impl.h>
  58 #include <sys/zone.h>
  59 #include <sys/panic.h>
  60 #include <regex.h>
  61 #include <sys/port_impl.h>
  62 
  63 #include "avl.h"
  64 #include "bio.h"
  65 #include "bitset.h"
  66 #include "combined.h"
  67 #include "contract.h"
  68 #include "cpupart_mdb.h"
  69 #include "cred.h"
  70 #include "ctxop.h"
  71 #include "cyclic.h"
  72 #include "damap.h"
  73 #include "devinfo.h"
  74 #include "findstack.h"
  75 #include "fm.h"
  76 #include "group.h"
  77 #include "irm.h"
  78 #include "kgrep.h"
  79 #include "kmem.h"
  80 #include "ldi.h"
  81 #include "leaky.h"
  82 #include "lgrp.h"
  83 #include "list.h"
  84 #include "log.h"
  85 #include "mdi.h"
  86 #include "memory.h"
  87 #include "mmd.h"
  88 #include "modhash.h"
  89 #include "ndievents.h"
  90 #include "net.h"
  91 #include "netstack.h"
  92 #include "nvpair.h"
  93 #include "pg.h"
  94 #include "rctl.h"
  95 #include "sobj.h"
  96 #include "streams.h"
  97 #include "sysevent.h"
  98 #include "taskq.h"
  99 #include "thread.h"
 100 #include "tsd.h"
 101 #include "tsol.h"
 102 #include "typegraph.h"
 103 #include "vfs.h"
 104 #include "zone.h"
 105 #include "hotplug.h"
 106 
 107 /*
 108  * Surely this is defined somewhere...
 109  */
 110 #define NINTR           16
 111 
 112 #define KILOS           10
 113 #define MEGS            20
 114 #define GIGS            30
 115 
 116 #ifndef STACK_BIAS
 117 #define STACK_BIAS      0
 118 #endif
 119 
 120 static char
 121 pstat2ch(uchar_t state)
 122 {
 123         switch (state) {
 124                 case SSLEEP: return ('S');
 125                 case SRUN: return ('R');
 126                 case SZOMB: return ('Z');
 127                 case SIDL: return ('I');
 128                 case SONPROC: return ('O');
 129                 case SSTOP: return ('T');
 130                 case SWAIT: return ('W');
 131                 default: return ('?');
 132         }
 133 }
 134 
 135 #define PS_PRTTHREADS   0x1
 136 #define PS_PRTLWPS      0x2
 137 #define PS_PSARGS       0x4
 138 #define PS_TASKS        0x8
 139 #define PS_PROJECTS     0x10
 140 #define PS_ZONES        0x20
 141 
 142 static int
 143 ps_threadprint(uintptr_t addr, const void *data, void *private)
 144 {
 145         const kthread_t *t = (const kthread_t *)data;
 146         uint_t prt_flags = *((uint_t *)private);
 147 
 148         static const mdb_bitmask_t t_state_bits[] = {
 149                 { "TS_FREE",    UINT_MAX,       TS_FREE         },
 150                 { "TS_SLEEP",   TS_SLEEP,       TS_SLEEP        },
 151                 { "TS_RUN",     TS_RUN,         TS_RUN          },
 152                 { "TS_ONPROC",  TS_ONPROC,      TS_ONPROC       },
 153                 { "TS_ZOMB",    TS_ZOMB,        TS_ZOMB         },
 154                 { "TS_STOPPED", TS_STOPPED,     TS_STOPPED      },
 155                 { "TS_WAIT",    TS_WAIT,        TS_WAIT         },
 156                 { NULL,         0,              0               }
 157         };
 158 
 159         if (prt_flags & PS_PRTTHREADS)
 160                 mdb_printf("\tT  %?a <%b>\n", addr, t->t_state, t_state_bits);
 161 
 162         if (prt_flags & PS_PRTLWPS)
 163                 mdb_printf("\tL  %?a ID: %u\n", t->t_lwp, t->t_tid);
 164 
 165         return (WALK_NEXT);
 166 }
 167 
 168 int
 169 ps(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 170 {
 171         uint_t prt_flags = 0;
 172         proc_t pr;
 173         struct pid pid, pgid, sid;
 174         sess_t session;
 175         cred_t cred;
 176         task_t tk;
 177         kproject_t pj;
 178         zone_t zn;
 179 
 180         if (!(flags & DCMD_ADDRSPEC)) {
 181                 if (mdb_walk_dcmd("proc", "ps", argc, argv) == -1) {
 182                         mdb_warn("can't walk 'proc'");
 183                         return (DCMD_ERR);
 184                 }
 185                 return (DCMD_OK);
 186         }
 187 
 188         if (mdb_getopts(argc, argv,
 189             'f', MDB_OPT_SETBITS, PS_PSARGS, &prt_flags,
 190             'l', MDB_OPT_SETBITS, PS_PRTLWPS, &prt_flags,
 191             'T', MDB_OPT_SETBITS, PS_TASKS, &prt_flags,
 192             'P', MDB_OPT_SETBITS, PS_PROJECTS, &prt_flags,
 193             'z', MDB_OPT_SETBITS, PS_ZONES, &prt_flags,
 194             't', MDB_OPT_SETBITS, PS_PRTTHREADS, &prt_flags, NULL) != argc)
 195                 return (DCMD_USAGE);
 196 
 197         if (DCMD_HDRSPEC(flags)) {
 198                 mdb_printf("%<u>%1s %6s %6s %6s %6s ",
 199                     "S", "PID", "PPID", "PGID", "SID");
 200                 if (prt_flags & PS_TASKS)
 201                         mdb_printf("%5s ", "TASK");
 202                 if (prt_flags & PS_PROJECTS)
 203                         mdb_printf("%5s ", "PROJ");
 204                 if (prt_flags & PS_ZONES)
 205                         mdb_printf("%5s ", "ZONE");
 206                 mdb_printf("%6s %10s %?s %s%</u>\n",
 207                     "UID", "FLAGS", "ADDR", "NAME");
 208         }
 209 
 210         mdb_vread(&pr, sizeof (pr), addr);
 211         mdb_vread(&pid, sizeof (pid), (uintptr_t)pr.p_pidp);
 212         mdb_vread(&pgid, sizeof (pgid), (uintptr_t)pr.p_pgidp);
 213         mdb_vread(&cred, sizeof (cred), (uintptr_t)pr.p_cred);
 214         mdb_vread(&session, sizeof (session), (uintptr_t)pr.p_sessp);
 215         mdb_vread(&sid, sizeof (sid), (uintptr_t)session.s_sidp);
 216         if (prt_flags & (PS_TASKS | PS_PROJECTS))
 217                 mdb_vread(&tk, sizeof (tk), (uintptr_t)pr.p_task);
 218         if (prt_flags & PS_PROJECTS)
 219                 mdb_vread(&pj, sizeof (pj), (uintptr_t)tk.tk_proj);
 220         if (prt_flags & PS_ZONES)
 221                 mdb_vread(&zn, sizeof (zone_t), (uintptr_t)pr.p_zone);
 222 
 223         mdb_printf("%c %6d %6d %6d %6d ",
 224             pstat2ch(pr.p_stat), pid.pid_id, pr.p_ppid, pgid.pid_id,
 225             sid.pid_id);
 226         if (prt_flags & PS_TASKS)
 227                 mdb_printf("%5d ", tk.tk_tkid);
 228         if (prt_flags & PS_PROJECTS)
 229                 mdb_printf("%5d ", pj.kpj_id);
 230         if (prt_flags & PS_ZONES)
 231                 mdb_printf("%5d ", zn.zone_id);
 232         mdb_printf("%6d 0x%08x %0?p %s\n",
 233             cred.cr_uid, pr.p_flag, addr,
 234             (prt_flags & PS_PSARGS) ? pr.p_user.u_psargs : pr.p_user.u_comm);
 235 
 236         if (prt_flags & ~PS_PSARGS)
 237                 (void) mdb_pwalk("thread", ps_threadprint, &prt_flags, addr);
 238 
 239         return (DCMD_OK);
 240 }
 241 
 242 #define PG_NEWEST       0x0001
 243 #define PG_OLDEST       0x0002
 244 #define PG_PIPE_OUT     0x0004
 245 #define PG_EXACT_MATCH  0x0008
 246 
 247 typedef struct pgrep_data {
 248         uint_t pg_flags;
 249         uint_t pg_psflags;
 250         uintptr_t pg_xaddr;
 251         hrtime_t pg_xstart;
 252         const char *pg_pat;
 253 #ifndef _KMDB
 254         regex_t pg_reg;
 255 #endif
 256 } pgrep_data_t;
 257 
 258 /*ARGSUSED*/
 259 static int
 260 pgrep_cb(uintptr_t addr, const void *pdata, void *data)
 261 {
 262         const proc_t *prp = pdata;
 263         pgrep_data_t *pgp = data;
 264 #ifndef _KMDB
 265         regmatch_t pmatch;
 266 #endif
 267 
 268         /*
 269          * kmdb doesn't have access to the reg* functions, so we fall back
 270          * to strstr/strcmp.
 271          */
 272 #ifdef _KMDB
 273         if ((pgp->pg_flags & PG_EXACT_MATCH) ?
 274             (strcmp(prp->p_user.u_comm, pgp->pg_pat) != 0) :
 275             (strstr(prp->p_user.u_comm, pgp->pg_pat) == NULL))
 276                 return (WALK_NEXT);
 277 #else
 278         if (regexec(&pgp->pg_reg, prp->p_user.u_comm, 1, &pmatch, 0) != 0)
 279                 return (WALK_NEXT);
 280 
 281         if ((pgp->pg_flags & PG_EXACT_MATCH) &&
 282             (pmatch.rm_so != 0 || prp->p_user.u_comm[pmatch.rm_eo] != '\0'))
 283                 return (WALK_NEXT);
 284 #endif
 285 
 286         if (pgp->pg_flags & (PG_NEWEST | PG_OLDEST)) {
 287                 hrtime_t start;
 288 
 289                 start = (hrtime_t)prp->p_user.u_start.tv_sec * NANOSEC +
 290                     prp->p_user.u_start.tv_nsec;
 291 
 292                 if (pgp->pg_flags & PG_NEWEST) {
 293                         if (pgp->pg_xaddr == NULL || start > pgp->pg_xstart) {
 294                                 pgp->pg_xaddr = addr;
 295                                 pgp->pg_xstart = start;
 296                         }
 297                 } else {
 298                         if (pgp->pg_xaddr == NULL || start < pgp->pg_xstart) {
 299                                 pgp->pg_xaddr = addr;
 300                                 pgp->pg_xstart = start;
 301                         }
 302                 }
 303 
 304         } else if (pgp->pg_flags & PG_PIPE_OUT) {
 305                 mdb_printf("%p\n", addr);
 306 
 307         } else {
 308                 if (mdb_call_dcmd("ps", addr, pgp->pg_psflags, 0, NULL) != 0) {
 309                         mdb_warn("can't invoke 'ps'");
 310                         return (WALK_DONE);
 311                 }
 312                 pgp->pg_psflags &= ~DCMD_LOOPFIRST;
 313         }
 314 
 315         return (WALK_NEXT);
 316 }
 317 
 318 /*ARGSUSED*/
 319 int
 320 pgrep(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 321 {
 322         pgrep_data_t pg;
 323         int i;
 324 #ifndef _KMDB
 325         int err;
 326 #endif
 327 
 328         if (flags & DCMD_ADDRSPEC)
 329                 return (DCMD_USAGE);
 330 
 331         pg.pg_flags = 0;
 332         pg.pg_xaddr = 0;
 333 
 334         i = mdb_getopts(argc, argv,
 335             'n', MDB_OPT_SETBITS, PG_NEWEST, &pg.pg_flags,
 336             'o', MDB_OPT_SETBITS, PG_OLDEST, &pg.pg_flags,
 337             'x', MDB_OPT_SETBITS, PG_EXACT_MATCH, &pg.pg_flags,
 338             NULL);
 339 
 340         argc -= i;
 341         argv += i;
 342 
 343         if (argc != 1)
 344                 return (DCMD_USAGE);
 345 
 346         /*
 347          * -n and -o are mutually exclusive.
 348          */
 349         if ((pg.pg_flags & PG_NEWEST) && (pg.pg_flags & PG_OLDEST))
 350                 return (DCMD_USAGE);
 351 
 352         if (argv->a_type != MDB_TYPE_STRING)
 353                 return (DCMD_USAGE);
 354 
 355         if (flags & DCMD_PIPE_OUT)
 356                 pg.pg_flags |= PG_PIPE_OUT;
 357 
 358         pg.pg_pat = argv->a_un.a_str;
 359         if (DCMD_HDRSPEC(flags))
 360                 pg.pg_psflags = DCMD_ADDRSPEC | DCMD_LOOP | DCMD_LOOPFIRST;
 361         else
 362                 pg.pg_psflags = DCMD_ADDRSPEC | DCMD_LOOP;
 363 
 364 #ifndef _KMDB
 365         if ((err = regcomp(&pg.pg_reg, pg.pg_pat, REG_EXTENDED)) != 0) {
 366                 size_t nbytes;
 367                 char *buf;
 368 
 369                 nbytes = regerror(err, &pg.pg_reg, NULL, 0);
 370                 buf = mdb_alloc(nbytes + 1, UM_SLEEP | UM_GC);
 371                 (void) regerror(err, &pg.pg_reg, buf, nbytes);
 372                 mdb_warn("%s\n", buf);
 373 
 374                 return (DCMD_ERR);
 375         }
 376 #endif
 377 
 378         if (mdb_walk("proc", pgrep_cb, &pg) != 0) {
 379                 mdb_warn("can't walk 'proc'");
 380                 return (DCMD_ERR);
 381         }
 382 
 383         if (pg.pg_xaddr != 0 && (pg.pg_flags & (PG_NEWEST | PG_OLDEST))) {
 384                 if (pg.pg_flags & PG_PIPE_OUT) {
 385                         mdb_printf("%p\n", pg.pg_xaddr);
 386                 } else {
 387                         if (mdb_call_dcmd("ps", pg.pg_xaddr, pg.pg_psflags,
 388                             0, NULL) != 0) {
 389                                 mdb_warn("can't invoke 'ps'");
 390                                 return (DCMD_ERR);
 391                         }
 392                 }
 393         }
 394 
 395         return (DCMD_OK);
 396 }
 397 
 398 int
 399 task(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 400 {
 401         task_t tk;
 402         kproject_t pj;
 403 
 404         if (!(flags & DCMD_ADDRSPEC)) {
 405                 if (mdb_walk_dcmd("task_cache", "task", argc, argv) == -1) {
 406                         mdb_warn("can't walk task_cache");
 407                         return (DCMD_ERR);
 408                 }
 409                 return (DCMD_OK);
 410         }
 411         if (DCMD_HDRSPEC(flags)) {
 412                 mdb_printf("%<u>%?s %6s %6s %6s %6s %10s%</u>\n",
 413                     "ADDR", "TASKID", "PROJID", "ZONEID", "REFCNT", "FLAGS");
 414         }
 415         if (mdb_vread(&tk, sizeof (task_t), addr) == -1) {
 416                 mdb_warn("can't read task_t structure at %p", addr);
 417                 return (DCMD_ERR);
 418         }
 419         if (mdb_vread(&pj, sizeof (kproject_t), (uintptr_t)tk.tk_proj) == -1) {
 420                 mdb_warn("can't read project_t structure at %p", addr);
 421                 return (DCMD_ERR);
 422         }
 423         mdb_printf("%0?p %6d %6d %6d %6u 0x%08x\n",
 424             addr, tk.tk_tkid, pj.kpj_id, pj.kpj_zoneid, tk.tk_hold_count,
 425             tk.tk_flags);
 426         return (DCMD_OK);
 427 }
 428 
 429 int
 430 project(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 431 {
 432         kproject_t pj;
 433 
 434         if (!(flags & DCMD_ADDRSPEC)) {
 435                 if (mdb_walk_dcmd("projects", "project", argc, argv) == -1) {
 436                         mdb_warn("can't walk projects");
 437                         return (DCMD_ERR);
 438                 }
 439                 return (DCMD_OK);
 440         }
 441         if (DCMD_HDRSPEC(flags)) {
 442                 mdb_printf("%<u>%?s %6s %6s %6s%</u>\n",
 443                     "ADDR", "PROJID", "ZONEID", "REFCNT");
 444         }
 445         if (mdb_vread(&pj, sizeof (kproject_t), addr) == -1) {
 446                 mdb_warn("can't read kproject_t structure at %p", addr);
 447                 return (DCMD_ERR);
 448         }
 449         mdb_printf("%0?p %6d %6d %6u\n", addr, pj.kpj_id, pj.kpj_zoneid,
 450             pj.kpj_count);
 451         return (DCMD_OK);
 452 }
 453 
 454 /* walk callouts themselves, either by list or id hash. */
 455 int
 456 callout_walk_init(mdb_walk_state_t *wsp)
 457 {
 458         if (wsp->walk_addr == NULL) {
 459                 mdb_warn("callout doesn't support global walk");
 460                 return (WALK_ERR);
 461         }
 462         wsp->walk_data = mdb_alloc(sizeof (callout_t), UM_SLEEP);
 463         return (WALK_NEXT);
 464 }
 465 
 466 #define CALLOUT_WALK_BYLIST     0
 467 #define CALLOUT_WALK_BYID       1
 468 
 469 /* the walker arg switches between walking by list (0) and walking by id (1). */
 470 int
 471 callout_walk_step(mdb_walk_state_t *wsp)
 472 {
 473         int retval;
 474 
 475         if (wsp->walk_addr == NULL) {
 476                 return (WALK_DONE);
 477         }
 478         if (mdb_vread(wsp->walk_data, sizeof (callout_t),
 479             wsp->walk_addr) == -1) {
 480                 mdb_warn("failed to read callout at %p", wsp->walk_addr);
 481                 return (WALK_DONE);
 482         }
 483         retval = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
 484             wsp->walk_cbdata);
 485 
 486         if ((ulong_t)wsp->walk_arg == CALLOUT_WALK_BYID) {
 487                 wsp->walk_addr =
 488                     (uintptr_t)(((callout_t *)wsp->walk_data)->c_idnext);
 489         } else {
 490                 wsp->walk_addr =
 491                     (uintptr_t)(((callout_t *)wsp->walk_data)->c_clnext);
 492         }
 493 
 494         return (retval);
 495 }
 496 
 497 void
 498 callout_walk_fini(mdb_walk_state_t *wsp)
 499 {
 500         mdb_free(wsp->walk_data, sizeof (callout_t));
 501 }
 502 
 503 /*
 504  * walker for callout lists. This is different from hashes and callouts.
 505  * Thankfully, it's also simpler.
 506  */
 507 int
 508 callout_list_walk_init(mdb_walk_state_t *wsp)
 509 {
 510         if (wsp->walk_addr == NULL) {
 511                 mdb_warn("callout list doesn't support global walk");
 512                 return (WALK_ERR);
 513         }
 514         wsp->walk_data = mdb_alloc(sizeof (callout_list_t), UM_SLEEP);
 515         return (WALK_NEXT);
 516 }
 517 
 518 int
 519 callout_list_walk_step(mdb_walk_state_t *wsp)
 520 {
 521         int retval;
 522 
 523         if (wsp->walk_addr == NULL) {
 524                 return (WALK_DONE);
 525         }
 526         if (mdb_vread(wsp->walk_data, sizeof (callout_list_t),
 527             wsp->walk_addr) != sizeof (callout_list_t)) {
 528                 mdb_warn("failed to read callout_list at %p", wsp->walk_addr);
 529                 return (WALK_ERR);
 530         }
 531         retval = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
 532             wsp->walk_cbdata);
 533 
 534         wsp->walk_addr = (uintptr_t)
 535             (((callout_list_t *)wsp->walk_data)->cl_next);
 536 
 537         return (retval);
 538 }
 539 
 540 void
 541 callout_list_walk_fini(mdb_walk_state_t *wsp)
 542 {
 543         mdb_free(wsp->walk_data, sizeof (callout_list_t));
 544 }
 545 
 546 /* routines/structs to walk callout table(s) */
 547 typedef struct cot_data {
 548         callout_table_t *ct0;
 549         callout_table_t ct;
 550         callout_hash_t cot_idhash[CALLOUT_BUCKETS];
 551         callout_hash_t cot_clhash[CALLOUT_BUCKETS];
 552         kstat_named_t ct_kstat_data[CALLOUT_NUM_STATS];
 553         int cotndx;
 554         int cotsize;
 555 } cot_data_t;
 556 
 557 int
 558 callout_table_walk_init(mdb_walk_state_t *wsp)
 559 {
 560         int max_ncpus;
 561         cot_data_t *cot_walk_data;
 562 
 563         cot_walk_data = mdb_alloc(sizeof (cot_data_t), UM_SLEEP);
 564 
 565         if (wsp->walk_addr == NULL) {
 566                 if (mdb_readvar(&cot_walk_data->ct0, "callout_table") == -1) {
 567                         mdb_warn("failed to read 'callout_table'");
 568                         return (WALK_ERR);
 569                 }
 570                 if (mdb_readvar(&max_ncpus, "max_ncpus") == -1) {
 571                         mdb_warn("failed to get callout_table array size");
 572                         return (WALK_ERR);
 573                 }
 574                 cot_walk_data->cotsize = CALLOUT_NTYPES * max_ncpus;
 575                 wsp->walk_addr = (uintptr_t)cot_walk_data->ct0;
 576         } else {
 577                 /* not a global walk */
 578                 cot_walk_data->cotsize = 1;
 579         }
 580 
 581         cot_walk_data->cotndx = 0;
 582         wsp->walk_data = cot_walk_data;
 583 
 584         return (WALK_NEXT);
 585 }
 586 
 587 int
 588 callout_table_walk_step(mdb_walk_state_t *wsp)
 589 {
 590         int retval;
 591         cot_data_t *cotwd = (cot_data_t *)wsp->walk_data;
 592         size_t size;
 593 
 594         if (cotwd->cotndx >= cotwd->cotsize) {
 595                 return (WALK_DONE);
 596         }
 597         if (mdb_vread(&(cotwd->ct), sizeof (callout_table_t),
 598             wsp->walk_addr) != sizeof (callout_table_t)) {
 599                 mdb_warn("failed to read callout_table at %p", wsp->walk_addr);
 600                 return (WALK_ERR);
 601         }
 602 
 603         size = sizeof (callout_hash_t) * CALLOUT_BUCKETS;
 604         if (cotwd->ct.ct_idhash != NULL) {
 605                 if (mdb_vread(cotwd->cot_idhash, size,
 606                     (uintptr_t)(cotwd->ct.ct_idhash)) != size) {
 607                         mdb_warn("failed to read id_hash at %p",
 608                             cotwd->ct.ct_idhash);
 609                         return (WALK_ERR);
 610                 }
 611         }
 612         if (cotwd->ct.ct_clhash != NULL) {
 613                 if (mdb_vread(&(cotwd->cot_clhash), size,
 614                     (uintptr_t)cotwd->ct.ct_clhash) == -1) {
 615                         mdb_warn("failed to read cl_hash at %p",
 616                             cotwd->ct.ct_clhash);
 617                         return (WALK_ERR);
 618                 }
 619         }
 620         size = sizeof (kstat_named_t) * CALLOUT_NUM_STATS;
 621         if (cotwd->ct.ct_kstat_data != NULL) {
 622                 if (mdb_vread(&(cotwd->ct_kstat_data), size,
 623                     (uintptr_t)cotwd->ct.ct_kstat_data) == -1) {
 624                         mdb_warn("failed to read kstats at %p",
 625                             cotwd->ct.ct_kstat_data);
 626                         return (WALK_ERR);
 627                 }
 628         }
 629         retval = wsp->walk_callback(wsp->walk_addr, (void *)cotwd,
 630             wsp->walk_cbdata);
 631 
 632         cotwd->cotndx++;
 633         if (cotwd->cotndx >= cotwd->cotsize) {
 634                 return (WALK_DONE);
 635         }
 636         wsp->walk_addr = (uintptr_t)((char *)wsp->walk_addr +
 637             sizeof (callout_table_t));
 638 
 639         return (retval);
 640 }
 641 
 642 void
 643 callout_table_walk_fini(mdb_walk_state_t *wsp)
 644 {
 645         mdb_free(wsp->walk_data, sizeof (cot_data_t));
 646 }
 647 
 648 static const char *co_typenames[] = { "R", "N" };
 649 
 650 #define CO_PLAIN_ID(xid)        ((xid) & CALLOUT_ID_MASK)
 651 
 652 #define TABLE_TO_SEQID(x)       ((x) >> CALLOUT_TYPE_BITS)
 653 
 654 /* callout flags, in no particular order */
 655 #define COF_REAL        0x00000001
 656 #define COF_NORM        0x00000002
 657 #define COF_LONG        0x00000004
 658 #define COF_SHORT       0x00000008
 659 #define COF_EMPTY       0x00000010
 660 #define COF_TIME        0x00000020
 661 #define COF_BEFORE      0x00000040
 662 #define COF_AFTER       0x00000080
 663 #define COF_SEQID       0x00000100
 664 #define COF_FUNC        0x00000200
 665 #define COF_ADDR        0x00000400
 666 #define COF_EXEC        0x00000800
 667 #define COF_HIRES       0x00001000
 668 #define COF_ABS         0x00002000
 669 #define COF_TABLE       0x00004000
 670 #define COF_BYIDH       0x00008000
 671 #define COF_FREE        0x00010000
 672 #define COF_LIST        0x00020000
 673 #define COF_EXPREL      0x00040000
 674 #define COF_HDR         0x00080000
 675 #define COF_VERBOSE     0x00100000
 676 #define COF_LONGLIST    0x00200000
 677 #define COF_THDR        0x00400000
 678 #define COF_LHDR        0x00800000
 679 #define COF_CHDR        0x01000000
 680 #define COF_PARAM       0x02000000
 681 #define COF_DECODE      0x04000000
 682 #define COF_HEAP        0x08000000
 683 #define COF_QUEUE       0x10000000
 684 
 685 /* show real and normal, short and long, expired and unexpired. */
 686 #define COF_DEFAULT     (COF_REAL | COF_NORM | COF_LONG | COF_SHORT)
 687 
 688 #define COF_LIST_FLAGS  \
 689         (CALLOUT_LIST_FLAG_HRESTIME | CALLOUT_LIST_FLAG_ABSOLUTE)
 690 
 691 /* private callout data for callback functions */
 692 typedef struct callout_data {
 693         uint_t flags;           /* COF_* */
 694         cpu_t *cpu;             /* cpu pointer if given */
 695         int seqid;              /* cpu seqid, or -1 */
 696         hrtime_t time;          /* expiration time value */
 697         hrtime_t atime;         /* expiration before value */
 698         hrtime_t btime;         /* expiration after value */
 699         uintptr_t funcaddr;     /* function address or NULL */
 700         uintptr_t param;        /* parameter to function or NULL */
 701         hrtime_t now;           /* current system time */
 702         int nsec_per_tick;      /* for conversions */
 703         ulong_t ctbits;         /* for decoding xid */
 704         callout_table_t *co_table;      /* top of callout table array */
 705         int ndx;                /* table index. */
 706         int bucket;             /* which list/id bucket are we in */
 707         hrtime_t exp;           /* expire time */
 708         int list_flags;         /* copy of cl_flags */
 709 } callout_data_t;
 710 
 711 /* this callback does the actual callback itself (finally). */
 712 /*ARGSUSED*/
 713 static int
 714 callouts_cb(uintptr_t addr, const void *data, void *priv)
 715 {
 716         callout_data_t *coargs = (callout_data_t *)priv;
 717         callout_t *co = (callout_t *)data;
 718         int tableid, list_flags;
 719         callout_id_t coid;
 720 
 721         if ((coargs == NULL) || (co == NULL)) {
 722                 return (WALK_ERR);
 723         }
 724 
 725         if ((coargs->flags & COF_FREE) && !(co->c_xid & CALLOUT_ID_FREE)) {
 726                 /*
 727                  * The callout must have been reallocated. No point in
 728                  * walking any more.
 729                  */
 730                 return (WALK_DONE);
 731         }
 732         if (!(coargs->flags & COF_FREE) && (co->c_xid & CALLOUT_ID_FREE)) {
 733                 /*
 734                  * The callout must have been freed. No point in
 735                  * walking any more.
 736                  */
 737                 return (WALK_DONE);
 738         }
 739         if ((coargs->flags & COF_FUNC) &&
 740             (coargs->funcaddr != (uintptr_t)co->c_func)) {
 741                 return (WALK_NEXT);
 742         }
 743         if ((coargs->flags & COF_PARAM) &&
 744             (coargs->param != (uintptr_t)co->c_arg)) {
 745                 return (WALK_NEXT);
 746         }
 747         if (!(coargs->flags & COF_LONG) && (co->c_xid & CALLOUT_LONGTERM)) {
 748                 return (WALK_NEXT);
 749         }
 750         if (!(coargs->flags & COF_SHORT) && !(co->c_xid & CALLOUT_LONGTERM)) {
 751                 return (WALK_NEXT);
 752         }
 753         if ((coargs->flags & COF_EXEC) && !(co->c_xid & CALLOUT_EXECUTING)) {
 754                 return (WALK_NEXT);
 755         }
 756         /* it is possible we don't have the exp time or flags */
 757         if (coargs->flags & COF_BYIDH) {
 758                 if (!(coargs->flags & COF_FREE)) {
 759                         /* we have to fetch the expire time ourselves. */
 760                         if (mdb_vread(&coargs->exp, sizeof (hrtime_t),
 761                             (uintptr_t)co->c_list + offsetof(callout_list_t,
 762                             cl_expiration)) == -1) {
 763                                 mdb_warn("failed to read expiration "
 764                                     "time from %p", co->c_list);
 765                                 coargs->exp = 0;
 766                         }
 767                         /* and flags. */
 768                         if (mdb_vread(&coargs->list_flags, sizeof (int),
 769                             (uintptr_t)co->c_list + offsetof(callout_list_t,
 770                             cl_flags)) == -1) {
 771                                 mdb_warn("failed to read list flags"
 772                                     "from %p", co->c_list);
 773                                 coargs->list_flags = 0;
 774                         }
 775                 } else {
 776                         /* free callouts can't use list pointer. */
 777                         coargs->exp = 0;
 778                         coargs->list_flags = 0;
 779                 }
 780                 if (coargs->exp != 0) {
 781                         if ((coargs->flags & COF_TIME) &&
 782                             (coargs->exp != coargs->time)) {
 783                                 return (WALK_NEXT);
 784                         }
 785                         if ((coargs->flags & COF_BEFORE) &&
 786                             (coargs->exp > coargs->btime)) {
 787                                 return (WALK_NEXT);
 788                         }
 789                         if ((coargs->flags & COF_AFTER) &&
 790                             (coargs->exp < coargs->atime)) {
 791                                 return (WALK_NEXT);
 792                         }
 793                 }
 794                 /* tricky part, since both HIRES and ABS can be set */
 795                 list_flags = coargs->list_flags;
 796                 if ((coargs->flags & COF_HIRES) && (coargs->flags & COF_ABS)) {
 797                         /* both flags are set, only skip "regular" ones */
 798                         if (! (list_flags & COF_LIST_FLAGS)) {
 799                                 return (WALK_NEXT);
 800                         }
 801                 } else {
 802                         /* individual flags, or no flags */
 803                         if ((coargs->flags & COF_HIRES) &&
 804                             !(list_flags & CALLOUT_LIST_FLAG_HRESTIME)) {
 805                                 return (WALK_NEXT);
 806                         }
 807                         if ((coargs->flags & COF_ABS) &&
 808                             !(list_flags & CALLOUT_LIST_FLAG_ABSOLUTE)) {
 809                                 return (WALK_NEXT);
 810                         }
 811                 }
 812                 /*
 813                  * We do the checks for COF_HEAP and COF_QUEUE here only if we
 814                  * are traversing BYIDH. If the traversal is by callout list,
 815                  * we do this check in callout_list_cb() to be more
 816                  * efficient.
 817                  */
 818                 if ((coargs->flags & COF_HEAP) &&
 819                     !(list_flags & CALLOUT_LIST_FLAG_HEAPED)) {
 820                         return (WALK_NEXT);
 821                 }
 822 
 823                 if ((coargs->flags & COF_QUEUE) &&
 824                     !(list_flags & CALLOUT_LIST_FLAG_QUEUED)) {
 825                         return (WALK_NEXT);
 826                 }
 827         }
 828 
 829 #define callout_table_mask      ((1 << coargs->ctbits) - 1)
 830         tableid = CALLOUT_ID_TO_TABLE(co->c_xid);
 831 #undef  callout_table_mask
 832         coid = CO_PLAIN_ID(co->c_xid);
 833 
 834         if ((coargs->flags & COF_CHDR) && !(coargs->flags & COF_ADDR)) {
 835                 /*
 836                  * We need to print the headers. If walking by id, then
 837                  * the list header isn't printed, so we must include
 838                  * that info here.
 839                  */
 840                 if (!(coargs->flags & COF_VERBOSE)) {
 841                         mdb_printf("%<u>%3s %-1s %-14s %</u>",
 842                             "SEQ", "T", "EXP");
 843                 } else if (coargs->flags & COF_BYIDH) {
 844                         mdb_printf("%<u>%-14s %</u>", "EXP");
 845                 }
 846                 mdb_printf("%<u>%-4s %-?s %-20s%</u>",
 847                     "XHAL", "XID", "FUNC(ARG)");
 848                 if (coargs->flags & COF_LONGLIST) {
 849                         mdb_printf("%<u> %-?s %-?s %-?s %-?s%</u>",
 850                             "PREVID", "NEXTID", "PREVL", "NEXTL");
 851                         mdb_printf("%<u> %-?s %-4s %-?s%</u>",
 852                             "DONE", "UTOS", "THREAD");
 853                 }
 854                 mdb_printf("\n");
 855                 coargs->flags &= ~COF_CHDR;
 856                 coargs->flags |= (COF_THDR | COF_LHDR);
 857         }
 858 
 859         if (!(coargs->flags & COF_ADDR)) {
 860                 if (!(coargs->flags & COF_VERBOSE)) {
 861                         mdb_printf("%-3d %1s %-14llx ",
 862                             TABLE_TO_SEQID(tableid),
 863                             co_typenames[tableid & CALLOUT_TYPE_MASK],
 864                             (coargs->flags & COF_EXPREL) ?
 865                             coargs->exp - coargs->now : coargs->exp);
 866                 } else if (coargs->flags & COF_BYIDH) {
 867                         mdb_printf("%-14x ",
 868                             (coargs->flags & COF_EXPREL) ?
 869                             coargs->exp - coargs->now : coargs->exp);
 870                 }
 871                 list_flags = coargs->list_flags;
 872                 mdb_printf("%1s%1s%1s%1s %-?llx %a(%p)",
 873                     (co->c_xid & CALLOUT_EXECUTING) ? "X" : " ",
 874                     (list_flags & CALLOUT_LIST_FLAG_HRESTIME) ? "H" : " ",
 875                     (list_flags & CALLOUT_LIST_FLAG_ABSOLUTE) ? "A" : " ",
 876                     (co->c_xid & CALLOUT_LONGTERM) ? "L" : " ",
 877                     (long long)coid, co->c_func, co->c_arg);
 878                 if (coargs->flags & COF_LONGLIST) {
 879                         mdb_printf(" %-?p %-?p %-?p %-?p",
 880                             co->c_idprev, co->c_idnext, co->c_clprev,
 881                             co->c_clnext);
 882                         mdb_printf(" %-?p %-4d %-0?p",
 883                             co->c_done, co->c_waiting, co->c_executor);
 884                 }
 885         } else {
 886                 /* address only */
 887                 mdb_printf("%-0p", addr);
 888         }
 889         mdb_printf("\n");
 890         return (WALK_NEXT);
 891 }
 892 
 893 /* this callback is for callout list handling. idhash is done by callout_t_cb */
 894 /*ARGSUSED*/
 895 static int
 896 callout_list_cb(uintptr_t addr, const void *data, void *priv)
 897 {
 898         callout_data_t *coargs = (callout_data_t *)priv;
 899         callout_list_t *cl = (callout_list_t *)data;
 900         callout_t *coptr;
 901         int list_flags;
 902 
 903         if ((coargs == NULL) || (cl == NULL)) {
 904                 return (WALK_ERR);
 905         }
 906 
 907         coargs->exp = cl->cl_expiration;
 908         coargs->list_flags = cl->cl_flags;
 909         if ((coargs->flags & COF_FREE) &&
 910             !(cl->cl_flags & CALLOUT_LIST_FLAG_FREE)) {
 911                 /*
 912                  * The callout list must have been reallocated. No point in
 913                  * walking any more.
 914                  */
 915                 return (WALK_DONE);
 916         }
 917         if (!(coargs->flags & COF_FREE) &&
 918             (cl->cl_flags & CALLOUT_LIST_FLAG_FREE)) {
 919                 /*
 920                  * The callout list must have been freed. No point in
 921                  * walking any more.
 922                  */
 923                 return (WALK_DONE);
 924         }
 925         if ((coargs->flags & COF_TIME) &&
 926             (cl->cl_expiration != coargs->time)) {
 927                 return (WALK_NEXT);
 928         }
 929         if ((coargs->flags & COF_BEFORE) &&
 930             (cl->cl_expiration > coargs->btime)) {
 931                 return (WALK_NEXT);
 932         }
 933         if ((coargs->flags & COF_AFTER) &&
 934             (cl->cl_expiration < coargs->atime)) {
 935                 return (WALK_NEXT);
 936         }
 937         if (!(coargs->flags & COF_EMPTY) &&
 938             (cl->cl_callouts.ch_head == NULL)) {
 939                 return (WALK_NEXT);
 940         }
 941         /* FOUR cases, each different, !A!B, !AB, A!B, AB */
 942         if ((coargs->flags & COF_HIRES) && (coargs->flags & COF_ABS)) {
 943                 /* both flags are set, only skip "regular" ones */
 944                 if (! (cl->cl_flags & COF_LIST_FLAGS)) {
 945                         return (WALK_NEXT);
 946                 }
 947         } else {
 948                 if ((coargs->flags & COF_HIRES) &&
 949                     !(cl->cl_flags & CALLOUT_LIST_FLAG_HRESTIME)) {
 950                         return (WALK_NEXT);
 951                 }
 952                 if ((coargs->flags & COF_ABS) &&
 953                     !(cl->cl_flags & CALLOUT_LIST_FLAG_ABSOLUTE)) {
 954                         return (WALK_NEXT);
 955                 }
 956         }
 957 
 958         if ((coargs->flags & COF_HEAP) &&
 959             !(coargs->list_flags & CALLOUT_LIST_FLAG_HEAPED)) {
 960                 return (WALK_NEXT);
 961         }
 962 
 963         if ((coargs->flags & COF_QUEUE) &&
 964             !(coargs->list_flags & CALLOUT_LIST_FLAG_QUEUED)) {
 965                 return (WALK_NEXT);
 966         }
 967 
 968         if ((coargs->flags & COF_LHDR) && !(coargs->flags & COF_ADDR) &&
 969             (coargs->flags & (COF_LIST | COF_VERBOSE))) {
 970                 if (!(coargs->flags & COF_VERBOSE)) {
 971                         /* don't be redundant again */
 972                         mdb_printf("%<u>SEQ T %</u>");
 973                 }
 974                 mdb_printf("%<u>EXP            HA BUCKET "
 975                     "CALLOUTS         %</u>");
 976 
 977                 if (coargs->flags & COF_LONGLIST) {
 978                         mdb_printf("%<u> %-?s %-?s%</u>",
 979                             "PREV", "NEXT");
 980                 }
 981                 mdb_printf("\n");
 982                 coargs->flags &= ~COF_LHDR;
 983                 coargs->flags |= (COF_THDR | COF_CHDR);
 984         }
 985         if (coargs->flags & (COF_LIST | COF_VERBOSE)) {
 986                 if (!(coargs->flags & COF_ADDR)) {
 987                         if (!(coargs->flags & COF_VERBOSE)) {
 988                                 mdb_printf("%3d %1s ",
 989                                     TABLE_TO_SEQID(coargs->ndx),
 990                                     co_typenames[coargs->ndx &
 991                                     CALLOUT_TYPE_MASK]);
 992                         }
 993 
 994                         list_flags = coargs->list_flags;
 995                         mdb_printf("%-14llx %1s%1s %-6d %-0?p ",
 996                             (coargs->flags & COF_EXPREL) ?
 997                             coargs->exp - coargs->now : coargs->exp,
 998                             (list_flags & CALLOUT_LIST_FLAG_HRESTIME) ?
 999                             "H" : " ",
1000                             (list_flags & CALLOUT_LIST_FLAG_ABSOLUTE) ?
1001                             "A" : " ",
1002                             coargs->bucket, cl->cl_callouts.ch_head);
1003 
1004                         if (coargs->flags & COF_LONGLIST) {
1005                                 mdb_printf(" %-?p %-?p",
1006                                     cl->cl_prev, cl->cl_next);
1007                         }
1008                 } else {
1009                         /* address only */
1010                         mdb_printf("%-0p", addr);
1011                 }
1012                 mdb_printf("\n");
1013                 if (coargs->flags & COF_LIST) {
1014                         return (WALK_NEXT);
1015                 }
1016         }
1017         /* yet another layer as we walk the actual callouts via list. */
1018         if (cl->cl_callouts.ch_head == NULL) {
1019                 return (WALK_NEXT);
1020         }
1021         /* free list structures do not have valid callouts off of them. */
1022         if (coargs->flags & COF_FREE) {
1023                 return (WALK_NEXT);
1024         }
1025         coptr = (callout_t *)cl->cl_callouts.ch_head;
1026 
1027         if (coargs->flags & COF_VERBOSE) {
1028                 mdb_inc_indent(4);
1029         }
1030         /*
1031          * walk callouts using yet another callback routine.
1032          * we use callouts_bytime because id hash is handled via
1033          * the callout_t_cb callback.
1034          */
1035         if (mdb_pwalk("callouts_bytime", callouts_cb, coargs,
1036             (uintptr_t)coptr) == -1) {
1037                 mdb_warn("cannot walk callouts at %p", coptr);
1038                 return (WALK_ERR);
1039         }
1040         if (coargs->flags & COF_VERBOSE) {
1041                 mdb_dec_indent(4);
1042         }
1043 
1044         return (WALK_NEXT);
1045 }
1046 
1047 /* this callback handles the details of callout table walking. */
1048 static int
1049 callout_t_cb(uintptr_t addr, const void *data, void *priv)
1050 {
1051         callout_data_t *coargs = (callout_data_t *)priv;
1052         cot_data_t *cotwd = (cot_data_t *)data;
1053         callout_table_t *ct = &(cotwd->ct);
1054         int index, seqid, cotype;
1055         int i;
1056         callout_list_t *clptr;
1057         callout_t *coptr;
1058 
1059         if ((coargs == NULL) || (ct == NULL) || (coargs->co_table == NULL)) {
1060                 return (WALK_ERR);
1061         }
1062 
1063         index =  ((char *)addr - (char *)coargs->co_table) /
1064             sizeof (callout_table_t);
1065         cotype = index & CALLOUT_TYPE_MASK;
1066         seqid = TABLE_TO_SEQID(index);
1067 
1068         if ((coargs->flags & COF_SEQID) && (coargs->seqid != seqid)) {
1069                 return (WALK_NEXT);
1070         }
1071 
1072         if (!(coargs->flags & COF_REAL) && (cotype == CALLOUT_REALTIME)) {
1073                 return (WALK_NEXT);
1074         }
1075 
1076         if (!(coargs->flags & COF_NORM) && (cotype == CALLOUT_NORMAL)) {
1077                 return (WALK_NEXT);
1078         }
1079 
1080         if (!(coargs->flags & COF_EMPTY) && (
1081             (ct->ct_heap == NULL) || (ct->ct_cyclic == NULL))) {
1082                 return (WALK_NEXT);
1083         }
1084 
1085         if ((coargs->flags & COF_THDR) && !(coargs->flags & COF_ADDR) &&
1086             (coargs->flags & (COF_TABLE | COF_VERBOSE))) {
1087                 /* print table hdr */
1088                 mdb_printf("%<u>%-3s %-1s %-?s %-?s %-?s %-?s%</u>",
1089                     "SEQ", "T", "FREE", "LFREE", "CYCLIC", "HEAP");
1090                 coargs->flags &= ~COF_THDR;
1091                 coargs->flags |= (COF_LHDR | COF_CHDR);
1092                 if (coargs->flags & COF_LONGLIST) {
1093                         /* more info! */
1094                         mdb_printf("%<u> %-T%-7s %-7s %-?s %-?s %-?s"
1095                             " %-?s %-?s %-?s%</u>",
1096                             "HEAPNUM", "HEAPMAX", "TASKQ", "EXPQ", "QUE",
1097                             "PEND", "FREE", "LOCK");
1098                 }
1099                 mdb_printf("\n");
1100         }
1101         if (coargs->flags & (COF_TABLE | COF_VERBOSE)) {
1102                 if (!(coargs->flags & COF_ADDR)) {
1103                         mdb_printf("%-3d %-1s %-0?p %-0?p %-0?p %-?p",
1104                             seqid, co_typenames[cotype],
1105                             ct->ct_free, ct->ct_lfree, ct->ct_cyclic,
1106                             ct->ct_heap);
1107                         if (coargs->flags & COF_LONGLIST)  {
1108                                 /* more info! */
1109                                 mdb_printf(" %-7d %-7d %-?p %-?p %-?p"
1110                                     " %-?lld %-?lld %-?p",
1111                                     ct->ct_heap_num,  ct->ct_heap_max,
1112                                     ct->ct_taskq, ct->ct_expired.ch_head,
1113                                     ct->ct_queue.ch_head,
1114                                     cotwd->ct_timeouts_pending,
1115                                     cotwd->ct_allocations -
1116                                     cotwd->ct_timeouts_pending,
1117                                     ct->ct_mutex);
1118                         }
1119                 } else {
1120                         /* address only */
1121                         mdb_printf("%-0?p", addr);
1122                 }
1123                 mdb_printf("\n");
1124                 if (coargs->flags & COF_TABLE) {
1125                         return (WALK_NEXT);
1126                 }
1127         }
1128 
1129         coargs->ndx = index;
1130         if (coargs->flags & COF_VERBOSE) {
1131                 mdb_inc_indent(4);
1132         }
1133         /* keep digging. */
1134         if (!(coargs->flags & COF_BYIDH)) {
1135                 /* walk the list hash table */
1136                 if (coargs->flags & COF_FREE) {
1137                         clptr = ct->ct_lfree;
1138                         coargs->bucket = 0;
1139                         if (clptr == NULL) {
1140                                 return (WALK_NEXT);
1141                         }
1142                         if (mdb_pwalk("callout_list", callout_list_cb, coargs,
1143                             (uintptr_t)clptr) == -1) {
1144                                 mdb_warn("cannot walk callout free list at %p",
1145                                     clptr);
1146                                 return (WALK_ERR);
1147                         }
1148                 } else {
1149                         /* first print the expired list. */
1150                         clptr = (callout_list_t *)ct->ct_expired.ch_head;
1151                         if (clptr != NULL) {
1152                                 coargs->bucket = -1;
1153                                 if (mdb_pwalk("callout_list", callout_list_cb,
1154                                     coargs, (uintptr_t)clptr) == -1) {
1155                                         mdb_warn("cannot walk callout_list"
1156                                             " at %p", clptr);
1157                                         return (WALK_ERR);
1158                                 }
1159                         }
1160                         /* then, print the callout queue */
1161                         clptr = (callout_list_t *)ct->ct_queue.ch_head;
1162                         if (clptr != NULL) {
1163                                 coargs->bucket = -1;
1164                                 if (mdb_pwalk("callout_list", callout_list_cb,
1165                                     coargs, (uintptr_t)clptr) == -1) {
1166                                         mdb_warn("cannot walk callout_list"
1167                                             " at %p", clptr);
1168                                         return (WALK_ERR);
1169                                 }
1170                         }
1171                         for (i = 0; i < CALLOUT_BUCKETS; i++) {
1172                                 if (ct->ct_clhash == NULL) {
1173                                         /* nothing to do */
1174                                         break;
1175                                 }
1176                                 if (cotwd->cot_clhash[i].ch_head == NULL) {
1177                                         continue;
1178                                 }
1179                                 clptr = (callout_list_t *)
1180                                     cotwd->cot_clhash[i].ch_head;
1181                                 coargs->bucket = i;
1182                                 /* walk list with callback routine. */
1183                                 if (mdb_pwalk("callout_list", callout_list_cb,
1184                                     coargs, (uintptr_t)clptr) == -1) {
1185                                         mdb_warn("cannot walk callout_list"
1186                                             " at %p", clptr);
1187                                         return (WALK_ERR);
1188                                 }
1189                         }
1190                 }
1191         } else {
1192                 /* walk the id hash table. */
1193                 if (coargs->flags & COF_FREE) {
1194                         coptr = ct->ct_free;
1195                         coargs->bucket = 0;
1196                         if (coptr == NULL) {
1197                                 return (WALK_NEXT);
1198                         }
1199                         if (mdb_pwalk("callouts_byid", callouts_cb, coargs,
1200                             (uintptr_t)coptr) == -1) {
1201                                 mdb_warn("cannot walk callout id free list"
1202                                     " at %p", coptr);
1203                                 return (WALK_ERR);
1204                         }
1205                 } else {
1206                         for (i = 0; i < CALLOUT_BUCKETS; i++) {
1207                                 if (ct->ct_idhash == NULL) {
1208                                         break;
1209                                 }
1210                                 coptr = (callout_t *)
1211                                     cotwd->cot_idhash[i].ch_head;
1212                                 if (coptr == NULL) {
1213                                         continue;
1214                                 }
1215                                 coargs->bucket = i;
1216 
1217                                 /*
1218                                  * walk callouts directly by id. For id
1219                                  * chain, the callout list is just a header,
1220                                  * so there's no need to walk it.
1221                                  */
1222                                 if (mdb_pwalk("callouts_byid", callouts_cb,
1223                                     coargs, (uintptr_t)coptr) == -1) {
1224                                         mdb_warn("cannot walk callouts at %p",
1225                                             coptr);
1226                                         return (WALK_ERR);
1227                                 }
1228                         }
1229                 }
1230         }
1231         if (coargs->flags & COF_VERBOSE) {
1232                 mdb_dec_indent(4);
1233         }
1234         return (WALK_NEXT);
1235 }
1236 
1237 /*
1238  * initialize some common info for both callout dcmds.
1239  */
1240 int
1241 callout_common_init(callout_data_t *coargs)
1242 {
1243         /* we need a couple of things */
1244         if (mdb_readvar(&(coargs->co_table), "callout_table") == -1) {
1245                 mdb_warn("failed to read 'callout_table'");
1246                 return (DCMD_ERR);
1247         }
1248         /* need to get now in nsecs. Approximate with hrtime vars */
1249         if (mdb_readsym(&(coargs->now), sizeof (hrtime_t), "hrtime_last") !=
1250             sizeof (hrtime_t)) {
1251                 if (mdb_readsym(&(coargs->now), sizeof (hrtime_t),
1252                     "hrtime_base") != sizeof (hrtime_t)) {
1253                         mdb_warn("Could not determine current system time");
1254                         return (DCMD_ERR);
1255                 }
1256         }
1257 
1258         if (mdb_readvar(&(coargs->ctbits), "callout_table_bits") == -1) {
1259                 mdb_warn("failed to read 'callout_table_bits'");
1260                 return (DCMD_ERR);
1261         }
1262         if (mdb_readvar(&(coargs->nsec_per_tick), "nsec_per_tick") == -1) {
1263                 mdb_warn("failed to read 'nsec_per_tick'");
1264                 return (DCMD_ERR);
1265         }
1266         return (DCMD_OK);
1267 }
1268 
1269 /*
1270  * dcmd to print callouts.  Optional addr limits to specific table.
1271  * Parses lots of options that get passed to callbacks for walkers.
1272  * Has it's own help function.
1273  */
1274 /*ARGSUSED*/
1275 int
1276 callout(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1277 {
1278         callout_data_t coargs;
1279         /* getopts doesn't help much with stuff like this */
1280         boolean_t Sflag, Cflag, tflag, aflag, bflag, dflag, kflag;
1281         char *funcname = NULL;
1282         char *paramstr = NULL;
1283         uintptr_t Stmp, Ctmp;   /* for getopt. */
1284         int retval;
1285 
1286         coargs.flags = COF_DEFAULT;
1287         Sflag = Cflag = tflag = bflag = aflag = dflag = kflag = FALSE;
1288         coargs.seqid = -1;
1289 
1290         if (mdb_getopts(argc, argv,
1291             'r', MDB_OPT_CLRBITS, COF_NORM, &coargs.flags,
1292             'n', MDB_OPT_CLRBITS, COF_REAL, &coargs.flags,
1293             'l', MDB_OPT_CLRBITS, COF_SHORT, &coargs.flags,
1294             's', MDB_OPT_CLRBITS, COF_LONG, &coargs.flags,
1295             'x', MDB_OPT_SETBITS, COF_EXEC, &coargs.flags,
1296             'h', MDB_OPT_SETBITS, COF_HIRES, &coargs.flags,
1297             'B', MDB_OPT_SETBITS, COF_ABS, &coargs.flags,
1298             'E', MDB_OPT_SETBITS, COF_EMPTY, &coargs.flags,
1299             'd', MDB_OPT_SETBITS, 1, &dflag,
1300             'C', MDB_OPT_UINTPTR_SET, &Cflag, &Ctmp,
1301             'S', MDB_OPT_UINTPTR_SET, &Sflag, &Stmp,
1302             't', MDB_OPT_UINTPTR_SET, &tflag, (uintptr_t *)&coargs.time,
1303             'a', MDB_OPT_UINTPTR_SET, &aflag, (uintptr_t *)&coargs.atime,
1304             'b', MDB_OPT_UINTPTR_SET, &bflag, (uintptr_t *)&coargs.btime,
1305             'k', MDB_OPT_SETBITS, 1, &kflag,
1306             'f', MDB_OPT_STR, &funcname,
1307             'p', MDB_OPT_STR, &paramstr,
1308             'T', MDB_OPT_SETBITS, COF_TABLE, &coargs.flags,
1309             'D', MDB_OPT_SETBITS, COF_EXPREL, &coargs.flags,
1310             'L', MDB_OPT_SETBITS, COF_LIST, &coargs.flags,
1311             'V', MDB_OPT_SETBITS, COF_VERBOSE, &coargs.flags,
1312             'v', MDB_OPT_SETBITS, COF_LONGLIST, &coargs.flags,
1313             'i', MDB_OPT_SETBITS, COF_BYIDH, &coargs.flags,
1314             'F', MDB_OPT_SETBITS, COF_FREE, &coargs.flags,
1315             'H', MDB_OPT_SETBITS, COF_HEAP, &coargs.flags,
1316             'Q', MDB_OPT_SETBITS, COF_QUEUE, &coargs.flags,
1317             'A', MDB_OPT_SETBITS, COF_ADDR, &coargs.flags,
1318             NULL) != argc) {
1319                 return (DCMD_USAGE);
1320         }
1321 
1322         /* initialize from kernel variables */
1323         if ((retval = callout_common_init(&coargs)) != DCMD_OK) {
1324                 return (retval);
1325         }
1326 
1327         /* do some option post-processing */
1328         if (kflag) {
1329                 coargs.time *= coargs.nsec_per_tick;
1330                 coargs.atime *= coargs.nsec_per_tick;
1331                 coargs.btime *= coargs.nsec_per_tick;
1332         }
1333 
1334         if (dflag) {
1335                 coargs.time += coargs.now;
1336                 coargs.atime += coargs.now;
1337                 coargs.btime += coargs.now;
1338         }
1339         if (Sflag) {
1340                 if (flags & DCMD_ADDRSPEC) {
1341                         mdb_printf("-S option conflicts with explicit"
1342                             " address\n");
1343                         return (DCMD_USAGE);
1344                 }
1345                 coargs.flags |= COF_SEQID;
1346                 coargs.seqid = (int)Stmp;
1347         }
1348         if (Cflag) {
1349                 if (flags & DCMD_ADDRSPEC) {
1350                         mdb_printf("-C option conflicts with explicit"
1351                             " address\n");
1352                         return (DCMD_USAGE);
1353                 }
1354                 if (coargs.flags & COF_SEQID) {
1355                         mdb_printf("-C and -S are mutually exclusive\n");
1356                         return (DCMD_USAGE);
1357                 }
1358                 coargs.cpu = (cpu_t *)Ctmp;
1359                 if (mdb_vread(&coargs.seqid, sizeof (processorid_t),
1360                     (uintptr_t)&(coargs.cpu->cpu_seqid)) == -1) {
1361                         mdb_warn("failed to read cpu_t at %p", Ctmp);
1362                         return (DCMD_ERR);
1363                 }
1364                 coargs.flags |= COF_SEQID;
1365         }
1366         /* avoid null outputs. */
1367         if (!(coargs.flags & (COF_REAL | COF_NORM))) {
1368                 coargs.flags |= COF_REAL | COF_NORM;
1369         }
1370         if (!(coargs.flags & (COF_LONG | COF_SHORT))) {
1371                 coargs.flags |= COF_LONG | COF_SHORT;
1372         }
1373         if (tflag) {
1374                 if (aflag || bflag) {
1375                         mdb_printf("-t and -a|b are mutually exclusive\n");
1376                         return (DCMD_USAGE);
1377                 }
1378                 coargs.flags |= COF_TIME;
1379         }
1380         if (aflag) {
1381                 coargs.flags |= COF_AFTER;
1382         }
1383         if (bflag) {
1384                 coargs.flags |= COF_BEFORE;
1385         }
1386         if ((aflag && bflag) && (coargs.btime <= coargs.atime)) {
1387                 mdb_printf("value for -a must be earlier than the value"
1388                     " for -b.\n");
1389                 return (DCMD_USAGE);
1390         }
1391 
1392         if ((coargs.flags & COF_HEAP) && (coargs.flags & COF_QUEUE)) {
1393                 mdb_printf("-H and -Q are mutually exclusive\n");
1394                 return (DCMD_USAGE);
1395         }
1396 
1397         if (funcname != NULL) {
1398                 GElf_Sym sym;
1399 
1400                 if (mdb_lookup_by_name(funcname, &sym) != 0) {
1401                         coargs.funcaddr = mdb_strtoull(funcname);
1402                 } else {
1403                         coargs.funcaddr = sym.st_value;
1404                 }
1405                 coargs.flags |= COF_FUNC;
1406         }
1407 
1408         if (paramstr != NULL) {
1409                 GElf_Sym sym;
1410 
1411                 if (mdb_lookup_by_name(paramstr, &sym) != 0) {
1412                         coargs.param = mdb_strtoull(paramstr);
1413                 } else {
1414                         coargs.param = sym.st_value;
1415                 }
1416                 coargs.flags |= COF_PARAM;
1417         }
1418 
1419         if (!(flags & DCMD_ADDRSPEC)) {
1420                 /* don't pass "dot" if no addr. */
1421                 addr = NULL;
1422         }
1423         if (addr != NULL) {
1424                 /*
1425                  * a callout table was specified. Ignore -r|n option
1426                  * to avoid null output.
1427                  */
1428                 coargs.flags |= (COF_REAL | COF_NORM);
1429         }
1430 
1431         if (DCMD_HDRSPEC(flags) || (coargs.flags & COF_VERBOSE)) {
1432                 coargs.flags |= COF_THDR | COF_LHDR | COF_CHDR;
1433         }
1434         if (coargs.flags & COF_FREE) {
1435                 coargs.flags |= COF_EMPTY;
1436                 /* -F = free callouts, -FL = free lists */
1437                 if (!(coargs.flags & COF_LIST)) {
1438                         coargs.flags |= COF_BYIDH;
1439                 }
1440         }
1441 
1442         /* walk table, using specialized callback routine. */
1443         if (mdb_pwalk("callout_table", callout_t_cb, &coargs, addr) == -1) {
1444                 mdb_warn("cannot walk callout_table");
1445                 return (DCMD_ERR);
1446         }
1447         return (DCMD_OK);
1448 }
1449 
1450 
1451 /*
1452  * Given an extended callout id, dump its information.
1453  */
1454 /*ARGSUSED*/
1455 int
1456 calloutid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1457 {
1458         callout_data_t coargs;
1459         callout_table_t *ctptr;
1460         callout_table_t ct;
1461         callout_id_t coid;
1462         callout_t *coptr;
1463         int tableid;
1464         callout_id_t xid;
1465         ulong_t idhash;
1466         int i, retval;
1467         const mdb_arg_t *arg;
1468         size_t size;
1469         callout_hash_t cot_idhash[CALLOUT_BUCKETS];
1470 
1471         coargs.flags = COF_DEFAULT | COF_BYIDH;
1472         i = mdb_getopts(argc, argv,
1473             'd', MDB_OPT_SETBITS, COF_DECODE, &coargs.flags,
1474             'v', MDB_OPT_SETBITS, COF_LONGLIST, &coargs.flags,
1475             NULL);
1476         argc -= i;
1477         argv += i;
1478 
1479         if (argc != 1) {
1480                 return (DCMD_USAGE);
1481         }
1482         arg = &argv[0];
1483 
1484         if (arg->a_type == MDB_TYPE_IMMEDIATE) {
1485                 xid = arg->a_un.a_val;
1486         } else {
1487                 xid = (callout_id_t)mdb_strtoull(arg->a_un.a_str);
1488         }
1489 
1490         if (DCMD_HDRSPEC(flags)) {
1491                 coargs.flags |= COF_CHDR;
1492         }
1493 
1494 
1495         /* initialize from kernel variables */
1496         if ((retval = callout_common_init(&coargs)) != DCMD_OK) {
1497                 return (retval);
1498         }
1499 
1500         /* we must massage the environment so that the macros will play nice */
1501 #define callout_table_mask      ((1 << coargs.ctbits) - 1)
1502 #define callout_table_bits      coargs.ctbits
1503 #define nsec_per_tick           coargs.nsec_per_tick
1504         tableid = CALLOUT_ID_TO_TABLE(xid);
1505         idhash = CALLOUT_IDHASH(xid);
1506 #undef  callouts_table_bits
1507 #undef  callout_table_mask
1508 #undef  nsec_per_tick
1509         coid = CO_PLAIN_ID(xid);
1510 
1511         if (flags & DCMD_ADDRSPEC) {
1512                 mdb_printf("calloutid does not accept explicit address.\n");
1513                 return (DCMD_USAGE);
1514         }
1515 
1516         if (coargs.flags & COF_DECODE) {
1517                 if (DCMD_HDRSPEC(flags)) {
1518                         mdb_printf("%<u>%3s %1s %2s %-?s %-6s %</u>\n",
1519                             "SEQ", "T", "XL", "XID", "IDHASH");
1520                 }
1521                 mdb_printf("%-3d %1s %1s%1s %-?llx %-6d\n",
1522                     TABLE_TO_SEQID(tableid),
1523                     co_typenames[tableid & CALLOUT_TYPE_MASK],
1524                     (xid & CALLOUT_EXECUTING) ? "X" : " ",
1525                     (xid & CALLOUT_LONGTERM) ? "L" : " ",
1526                     (long long)coid, idhash);
1527                 return (DCMD_OK);
1528         }
1529 
1530         /* get our table. Note this relies on the types being correct */
1531         ctptr = coargs.co_table + tableid;
1532         if (mdb_vread(&ct, sizeof (callout_table_t), (uintptr_t)ctptr) == -1) {
1533                 mdb_warn("failed to read callout_table at %p", ctptr);
1534                 return (DCMD_ERR);
1535         }
1536         size = sizeof (callout_hash_t) * CALLOUT_BUCKETS;
1537         if (ct.ct_idhash != NULL) {
1538                 if (mdb_vread(&(cot_idhash), size,
1539                     (uintptr_t)ct.ct_idhash) == -1) {
1540                         mdb_warn("failed to read id_hash at %p",
1541                             ct.ct_idhash);
1542                         return (WALK_ERR);
1543                 }
1544         }
1545 
1546         /* callout at beginning of hash chain */
1547         if (ct.ct_idhash == NULL) {
1548                 mdb_printf("id hash chain for this xid is empty\n");
1549                 return (DCMD_ERR);
1550         }
1551         coptr = (callout_t *)cot_idhash[idhash].ch_head;
1552         if (coptr == NULL) {
1553                 mdb_printf("id hash chain for this xid is empty\n");
1554                 return (DCMD_ERR);
1555         }
1556 
1557         coargs.ndx = tableid;
1558         coargs.bucket = idhash;
1559 
1560         /* use the walker, luke */
1561         if (mdb_pwalk("callouts_byid", callouts_cb, &coargs,
1562             (uintptr_t)coptr) == -1) {
1563                 mdb_warn("cannot walk callouts at %p", coptr);
1564                 return (WALK_ERR);
1565         }
1566 
1567         return (DCMD_OK);
1568 }
1569 
1570 void
1571 callout_help(void)
1572 {
1573         mdb_printf("callout: display callouts.\n"
1574             "Given a callout table address, display callouts from table.\n"
1575             "Without an address, display callouts from all tables.\n"
1576             "options:\n"
1577             " -r|n : limit display to (r)ealtime or (n)ormal type callouts\n"
1578             " -s|l : limit display to (s)hort-term ids or (l)ong-term ids\n"
1579             " -x : limit display to callouts which are executing\n"
1580             " -h : limit display to callouts based on hrestime\n"
1581             " -B : limit display to callouts based on absolute time\n"
1582             " -t|a|b nsec: limit display to callouts that expire a(t) time,"
1583             " (a)fter time,\n     or (b)efore time. Use -a and -b together "
1584             " to specify a range.\n     For \"now\", use -d[t|a|b] 0.\n"
1585             " -d : interpret time option to -t|a|b as delta from current time\n"
1586             " -k : use ticks instead of nanoseconds as arguments to"
1587             " -t|a|b. Note that\n     ticks are less accurate and may not"
1588             " match other tick times (ie: lbolt).\n"
1589             " -D : display exiration time as delta from current time\n"
1590             " -S seqid : limit display to callouts for this cpu sequence id\n"
1591             " -C addr :  limit display to callouts for this cpu pointer\n"
1592             " -f name|addr : limit display to callouts with this function\n"
1593             " -p name|addr : limit display to callouts functions with this"
1594             " parameter\n"
1595             " -T : display the callout table itself, instead of callouts\n"
1596             " -L : display callout lists instead of callouts\n"
1597             " -E : with -T or L, display empty data structures.\n"
1598             " -i : traverse callouts by id hash instead of list hash\n"
1599             " -F : walk free callout list (free list with -i) instead\n"
1600             " -v : display more info for each item\n"
1601             " -V : show details of each level of info as it is traversed\n"
1602             " -H : limit display to callouts in the callout heap\n"
1603             " -Q : limit display to callouts in the callout queue\n"
1604             " -A : show only addresses. Useful for pipelines.\n");
1605 }
1606 
1607 void
1608 calloutid_help(void)
1609 {
1610         mdb_printf("calloutid: display callout by id.\n"
1611             "Given an extended callout id, display the callout infomation.\n"
1612             "options:\n"
1613             " -d : do not dereference callout, just decode the id.\n"
1614             " -v : verbose display more info about the callout\n");
1615 }
1616 
1617 /*ARGSUSED*/
1618 int
1619 class(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1620 {
1621         long num_classes, i;
1622         sclass_t *class_tbl;
1623         GElf_Sym g_sclass;
1624         char class_name[PC_CLNMSZ];
1625         size_t tbl_size;
1626 
1627         if (mdb_lookup_by_name("sclass", &g_sclass) == -1) {
1628                 mdb_warn("failed to find symbol sclass\n");
1629                 return (DCMD_ERR);
1630         }
1631 
1632         tbl_size = (size_t)g_sclass.st_size;
1633         num_classes = tbl_size / (sizeof (sclass_t));
1634         class_tbl = mdb_alloc(tbl_size, UM_SLEEP | UM_GC);
1635 
1636         if (mdb_readsym(class_tbl, tbl_size, "sclass") == -1) {
1637                 mdb_warn("failed to read sclass");
1638                 return (DCMD_ERR);
1639         }
1640 
1641         mdb_printf("%<u>%4s %-10s %-24s %-24s%</u>\n", "SLOT", "NAME",
1642             "INIT FCN", "CLASS FCN");
1643 
1644         for (i = 0; i < num_classes; i++) {
1645                 if (mdb_vread(class_name, sizeof (class_name),
1646                     (uintptr_t)class_tbl[i].cl_name) == -1)
1647                         (void) strcpy(class_name, "???");
1648 
1649                 mdb_printf("%4ld %-10s %-24a %-24a\n", i, class_name,
1650                     class_tbl[i].cl_init, class_tbl[i].cl_funcs);
1651         }
1652 
1653         return (DCMD_OK);
1654 }
1655 
1656 #define FSNAMELEN       32      /* Max len of FS name we read from vnodeops */
1657 
1658 int
1659 vnode2path(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1660 {
1661         uintptr_t rootdir;
1662         vnode_t vn;
1663         char buf[MAXPATHLEN];
1664 
1665         uint_t opt_F = FALSE;
1666 
1667         if (mdb_getopts(argc, argv,
1668             'F', MDB_OPT_SETBITS, TRUE, &opt_F, NULL) != argc)
1669                 return (DCMD_USAGE);
1670 
1671         if (!(flags & DCMD_ADDRSPEC)) {
1672                 mdb_warn("expected explicit vnode_t address before ::\n");
1673                 return (DCMD_USAGE);
1674         }
1675 
1676         if (mdb_readvar(&rootdir, "rootdir") == -1) {
1677                 mdb_warn("failed to read rootdir");
1678                 return (DCMD_ERR);
1679         }
1680 
1681         if (mdb_vnode2path(addr, buf, sizeof (buf)) == -1)
1682                 return (DCMD_ERR);
1683 
1684         if (*buf == '\0') {
1685                 mdb_printf("??\n");
1686                 return (DCMD_OK);
1687         }
1688 
1689         mdb_printf("%s", buf);
1690         if (opt_F && buf[strlen(buf)-1] != '/' &&
1691             mdb_vread(&vn, sizeof (vn), addr) == sizeof (vn))
1692                 mdb_printf("%c", mdb_vtype2chr(vn.v_type, 0));
1693         mdb_printf("\n");
1694 
1695         return (DCMD_OK);
1696 }
1697 
1698 int
1699 ld_walk_init(mdb_walk_state_t *wsp)
1700 {
1701         wsp->walk_data = (void *)wsp->walk_addr;
1702         return (WALK_NEXT);
1703 }
1704 
1705 int
1706 ld_walk_step(mdb_walk_state_t *wsp)
1707 {
1708         int status;
1709         lock_descriptor_t ld;
1710 
1711         if (mdb_vread(&ld, sizeof (lock_descriptor_t), wsp->walk_addr) == -1) {
1712                 mdb_warn("couldn't read lock_descriptor_t at %p\n",
1713                     wsp->walk_addr);
1714                 return (WALK_ERR);
1715         }
1716 
1717         status = wsp->walk_callback(wsp->walk_addr, &ld, wsp->walk_cbdata);
1718         if (status == WALK_ERR)
1719                 return (WALK_ERR);
1720 
1721         wsp->walk_addr = (uintptr_t)ld.l_next;
1722         if (wsp->walk_addr == (uintptr_t)wsp->walk_data)
1723                 return (WALK_DONE);
1724 
1725         return (status);
1726 }
1727 
1728 int
1729 lg_walk_init(mdb_walk_state_t *wsp)
1730 {
1731         GElf_Sym sym;
1732 
1733         if (mdb_lookup_by_name("lock_graph", &sym) == -1) {
1734                 mdb_warn("failed to find symbol 'lock_graph'\n");
1735                 return (WALK_ERR);
1736         }
1737 
1738         wsp->walk_addr = (uintptr_t)sym.st_value;
1739         wsp->walk_data = (void *)(uintptr_t)(sym.st_value + sym.st_size);
1740 
1741         return (WALK_NEXT);
1742 }
1743 
1744 typedef struct lg_walk_data {
1745         uintptr_t startaddr;
1746         mdb_walk_cb_t callback;
1747         void *data;
1748 } lg_walk_data_t;
1749 
1750 /*
1751  * We can't use ::walk lock_descriptor directly, because the head of each graph
1752  * is really a dummy lock.  Rather than trying to dynamically determine if this
1753  * is a dummy node or not, we just filter out the initial element of the
1754  * list.
1755  */
1756 static int
1757 lg_walk_cb(uintptr_t addr, const void *data, void *priv)
1758 {
1759         lg_walk_data_t *lw = priv;
1760 
1761         if (addr != lw->startaddr)
1762                 return (lw->callback(addr, data, lw->data));
1763 
1764         return (WALK_NEXT);
1765 }
1766 
1767 int
1768 lg_walk_step(mdb_walk_state_t *wsp)
1769 {
1770         graph_t *graph;
1771         lg_walk_data_t lw;
1772 
1773         if (wsp->walk_addr >= (uintptr_t)wsp->walk_data)
1774                 return (WALK_DONE);
1775 
1776         if (mdb_vread(&graph, sizeof (graph), wsp->walk_addr) == -1) {
1777                 mdb_warn("failed to read graph_t at %p", wsp->walk_addr);
1778                 return (WALK_ERR);
1779         }
1780 
1781         wsp->walk_addr += sizeof (graph);
1782 
1783         if (graph == NULL)
1784                 return (WALK_NEXT);
1785 
1786         lw.callback = wsp->walk_callback;
1787         lw.data = wsp->walk_cbdata;
1788 
1789         lw.startaddr = (uintptr_t)&(graph->active_locks);
1790         if (mdb_pwalk("lock_descriptor", lg_walk_cb, &lw, lw.startaddr)) {
1791                 mdb_warn("couldn't walk lock_descriptor at %p\n", lw.startaddr);
1792                 return (WALK_ERR);
1793         }
1794 
1795         lw.startaddr = (uintptr_t)&(graph->sleeping_locks);
1796         if (mdb_pwalk("lock_descriptor", lg_walk_cb, &lw, lw.startaddr)) {
1797                 mdb_warn("couldn't walk lock_descriptor at %p\n", lw.startaddr);
1798                 return (WALK_ERR);
1799         }
1800 
1801         return (WALK_NEXT);
1802 }
1803 
1804 /*
1805  * The space available for the path corresponding to the locked vnode depends
1806  * on whether we are printing 32- or 64-bit addresses.
1807  */
1808 #ifdef _LP64
1809 #define LM_VNPATHLEN    20
1810 #else
1811 #define LM_VNPATHLEN    30
1812 #endif
1813 
1814 /*ARGSUSED*/
1815 static int
1816 lminfo_cb(uintptr_t addr, const void *data, void *priv)
1817 {
1818         const lock_descriptor_t *ld = data;
1819         char buf[LM_VNPATHLEN];
1820         proc_t p;
1821 
1822         mdb_printf("%-?p %2s %04x %6d %-16s %-?p ",
1823             addr, ld->l_type == F_RDLCK ? "RD" :
1824             ld->l_type == F_WRLCK ? "WR" : "??",
1825             ld->l_state, ld->l_flock.l_pid,
1826             ld->l_flock.l_pid == 0 ? "<kernel>" :
1827             mdb_pid2proc(ld->l_flock.l_pid, &p) == NULL ?
1828             "<defunct>" : p.p_user.u_comm,
1829             ld->l_vnode);
1830 
1831         mdb_vnode2path((uintptr_t)ld->l_vnode, buf,
1832             sizeof (buf));
1833         mdb_printf("%s\n", buf);
1834 
1835         return (WALK_NEXT);
1836 }
1837 
1838 /*ARGSUSED*/
1839 int
1840 lminfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1841 {
1842         if (DCMD_HDRSPEC(flags))
1843                 mdb_printf("%<u>%-?s %2s %4s %6s %-16s %-?s %s%</u>\n",
1844                     "ADDR", "TP", "FLAG", "PID", "COMM", "VNODE", "PATH");
1845 
1846         return (mdb_pwalk("lock_graph", lminfo_cb, NULL, NULL));
1847 }
1848 
1849 /*ARGSUSED*/
1850 int
1851 whereopen_fwalk(uintptr_t addr, struct file *f, uintptr_t *target)
1852 {
1853         if ((uintptr_t)f->f_vnode == *target) {
1854                 mdb_printf("file %p\n", addr);
1855                 *target = NULL;
1856         }
1857 
1858         return (WALK_NEXT);
1859 }
1860 
1861 /*ARGSUSED*/
1862 int
1863 whereopen_pwalk(uintptr_t addr, void *ignored, uintptr_t *target)
1864 {
1865         uintptr_t t = *target;
1866 
1867         if (mdb_pwalk("file", (mdb_walk_cb_t)whereopen_fwalk, &t, addr) == -1) {
1868                 mdb_warn("couldn't file walk proc %p", addr);
1869                 return (WALK_ERR);
1870         }
1871 
1872         if (t == NULL)
1873                 mdb_printf("%p\n", addr);
1874 
1875         return (WALK_NEXT);
1876 }
1877 
1878 /*ARGSUSED*/
1879 int
1880 whereopen(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1881 {
1882         uintptr_t target = addr;
1883 
1884         if (!(flags & DCMD_ADDRSPEC) || addr == NULL)
1885                 return (DCMD_USAGE);
1886 
1887         if (mdb_walk("proc", (mdb_walk_cb_t)whereopen_pwalk, &target) == -1) {
1888                 mdb_warn("can't proc walk");
1889                 return (DCMD_ERR);
1890         }
1891 
1892         return (DCMD_OK);
1893 }
1894 
1895 typedef struct datafmt {
1896         char    *hdr1;
1897         char    *hdr2;
1898         char    *dashes;
1899         char    *fmt;
1900 } datafmt_t;
1901 
1902 static datafmt_t kmemfmt[] = {
1903         { "cache                    ", "name                     ",
1904         "-------------------------", "%-25s "                           },
1905         { "   buf",     "  size",       "------",       "%6u "          },
1906         { "   buf",     "in use",       "------",       "%6u "          },
1907         { "   buf",     " total",       "------",       "%6u "          },
1908         { "   memory",  "   in use",    "----------",   "%10lu%c "      },
1909         { "    alloc",  "  succeed",    "---------",    "%9u "          },
1910         { "alloc",      " fail",        "-----",        "%5u "          },
1911         { NULL,         NULL,           NULL,           NULL            }
1912 };
1913 
1914 static datafmt_t vmemfmt[] = {
1915         { "vmem                     ", "name                     ",
1916         "-------------------------", "%-*s "                            },
1917         { "   memory",  "   in use",    "----------",   "%9llu%c "      },
1918         { "    memory", "     total",   "-----------",  "%10llu%c "     },
1919         { "   memory",  "   import",    "----------",   "%9llu%c "      },
1920         { "    alloc",  "  succeed",    "---------",    "%9llu "        },
1921         { "alloc",      " fail",        "-----",        "%5llu "        },
1922         { NULL,         NULL,           NULL,           NULL            }
1923 };
1924 
1925 /*ARGSUSED*/
1926 static int
1927 kmastat_cpu_avail(uintptr_t addr, const kmem_cpu_cache_t *ccp, int *avail)
1928 {
1929         short rounds, prounds;
1930 
1931         if (KMEM_DUMPCC(ccp)) {
1932                 rounds = ccp->cc_dump_rounds;
1933                 prounds = ccp->cc_dump_prounds;
1934         } else {
1935                 rounds = ccp->cc_rounds;
1936                 prounds = ccp->cc_prounds;
1937         }
1938         if (rounds > 0)
1939                 *avail += rounds;
1940         if (prounds > 0)
1941                 *avail += prounds;
1942 
1943         return (WALK_NEXT);
1944 }
1945 
1946 /*ARGSUSED*/
1947 static int
1948 kmastat_cpu_alloc(uintptr_t addr, const kmem_cpu_cache_t *ccp, int *alloc)
1949 {
1950         *alloc += ccp->cc_alloc;
1951 
1952         return (WALK_NEXT);
1953 }
1954 
1955 /*ARGSUSED*/
1956 static int
1957 kmastat_slab_avail(uintptr_t addr, const kmem_slab_t *sp, int *avail)
1958 {
1959         *avail += sp->slab_chunks - sp->slab_refcnt;
1960 
1961         return (WALK_NEXT);
1962 }
1963 
1964 typedef struct kmastat_vmem {
1965         uintptr_t kv_addr;
1966         struct kmastat_vmem *kv_next;
1967         size_t kv_meminuse;
1968         int kv_alloc;
1969         int kv_fail;
1970 } kmastat_vmem_t;
1971 
1972 typedef struct kmastat_args {
1973         kmastat_vmem_t **ka_kvpp;
1974         uint_t ka_shift;
1975 } kmastat_args_t;
1976 
1977 static int
1978 kmastat_cache(uintptr_t addr, const kmem_cache_t *cp, kmastat_args_t *kap)
1979 {
1980         kmastat_vmem_t **kvpp = kap->ka_kvpp;
1981         kmastat_vmem_t *kv;
1982         datafmt_t *dfp = kmemfmt;
1983         int magsize;
1984 
1985         int avail, alloc, total;
1986         size_t meminuse = (cp->cache_slab_create - cp->cache_slab_destroy) *
1987             cp->cache_slabsize;
1988 
1989         mdb_walk_cb_t cpu_avail = (mdb_walk_cb_t)kmastat_cpu_avail;
1990         mdb_walk_cb_t cpu_alloc = (mdb_walk_cb_t)kmastat_cpu_alloc;
1991         mdb_walk_cb_t slab_avail = (mdb_walk_cb_t)kmastat_slab_avail;
1992 
1993         magsize = kmem_get_magsize(cp);
1994 
1995         alloc = cp->cache_slab_alloc + cp->cache_full.ml_alloc;
1996         avail = cp->cache_full.ml_total * magsize;
1997         total = cp->cache_buftotal;
1998 
1999         (void) mdb_pwalk("kmem_cpu_cache", cpu_alloc, &alloc, addr);
2000         (void) mdb_pwalk("kmem_cpu_cache", cpu_avail, &avail, addr);
2001         (void) mdb_pwalk("kmem_slab_partial", slab_avail, &avail, addr);
2002 
2003         for (kv = *kvpp; kv != NULL; kv = kv->kv_next) {
2004                 if (kv->kv_addr == (uintptr_t)cp->cache_arena)
2005                         goto out;
2006         }
2007 
2008         kv = mdb_zalloc(sizeof (kmastat_vmem_t), UM_SLEEP | UM_GC);
2009         kv->kv_next = *kvpp;
2010         kv->kv_addr = (uintptr_t)cp->cache_arena;
2011         *kvpp = kv;
2012 out:
2013         kv->kv_meminuse += meminuse;
2014         kv->kv_alloc += alloc;
2015         kv->kv_fail += cp->cache_alloc_fail;
2016 
2017         mdb_printf((dfp++)->fmt, cp->cache_name);
2018         mdb_printf((dfp++)->fmt, cp->cache_bufsize);
2019         mdb_printf((dfp++)->fmt, total - avail);
2020         mdb_printf((dfp++)->fmt, total);
2021         mdb_printf((dfp++)->fmt, meminuse >> kap->ka_shift,
2022             kap->ka_shift == GIGS ? 'G' : kap->ka_shift == MEGS ? 'M' :
2023             kap->ka_shift == KILOS ? 'K' : 'B');
2024         mdb_printf((dfp++)->fmt, alloc);
2025         mdb_printf((dfp++)->fmt, cp->cache_alloc_fail);
2026         mdb_printf("\n");
2027 
2028         return (WALK_NEXT);
2029 }
2030 
2031 static int
2032 kmastat_vmem_totals(uintptr_t addr, const vmem_t *v, kmastat_args_t *kap)
2033 {
2034         kmastat_vmem_t *kv = *kap->ka_kvpp;
2035         size_t len;
2036 
2037         while (kv != NULL && kv->kv_addr != addr)
2038                 kv = kv->kv_next;
2039 
2040         if (kv == NULL || kv->kv_alloc == 0)
2041                 return (WALK_NEXT);
2042 
2043         len = MIN(17, strlen(v->vm_name));
2044 
2045         mdb_printf("Total [%s]%*s %6s %6s %6s %10lu%c %9u %5u\n", v->vm_name,
2046             17 - len, "", "", "", "",
2047             kv->kv_meminuse >> kap->ka_shift,
2048             kap->ka_shift == GIGS ? 'G' : kap->ka_shift == MEGS ? 'M' :
2049             kap->ka_shift == KILOS ? 'K' : 'B', kv->kv_alloc, kv->kv_fail);
2050 
2051         return (WALK_NEXT);
2052 }
2053 
2054 /*ARGSUSED*/
2055 static int
2056 kmastat_vmem(uintptr_t addr, const vmem_t *v, const uint_t *shiftp)
2057 {
2058         datafmt_t *dfp = vmemfmt;
2059         const vmem_kstat_t *vkp = &v->vm_kstat;
2060         uintptr_t paddr;
2061         vmem_t parent;
2062         int ident = 0;
2063 
2064         for (paddr = (uintptr_t)v->vm_source; paddr != NULL; ident += 4) {
2065                 if (mdb_vread(&parent, sizeof (parent), paddr) == -1) {
2066                         mdb_warn("couldn't trace %p's ancestry", addr);
2067                         ident = 0;
2068                         break;
2069                 }
2070                 paddr = (uintptr_t)parent.vm_source;
2071         }
2072 
2073         mdb_printf("%*s", ident, "");
2074         mdb_printf((dfp++)->fmt, 25 - ident, v->vm_name);
2075         mdb_printf((dfp++)->fmt, vkp->vk_mem_inuse.value.ui64 >> *shiftp,
2076             *shiftp == GIGS ? 'G' : *shiftp == MEGS ? 'M' :
2077             *shiftp == KILOS ? 'K' : 'B');
2078         mdb_printf((dfp++)->fmt, vkp->vk_mem_total.value.ui64 >> *shiftp,
2079             *shiftp == GIGS ? 'G' : *shiftp == MEGS ? 'M' :
2080             *shiftp == KILOS ? 'K' : 'B');
2081         mdb_printf((dfp++)->fmt, vkp->vk_mem_import.value.ui64 >> *shiftp,
2082             *shiftp == GIGS ? 'G' : *shiftp == MEGS ? 'M' :
2083             *shiftp == KILOS ? 'K' : 'B');
2084         mdb_printf((dfp++)->fmt, vkp->vk_alloc.value.ui64);
2085         mdb_printf((dfp++)->fmt, vkp->vk_fail.value.ui64);
2086 
2087         mdb_printf("\n");
2088 
2089         return (WALK_NEXT);
2090 }
2091 
2092 /*ARGSUSED*/
2093 int
2094 kmastat(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2095 {
2096         kmastat_vmem_t *kv = NULL;
2097         datafmt_t *dfp;
2098         kmastat_args_t ka;
2099 
2100         ka.ka_shift = 0;
2101         if (mdb_getopts(argc, argv,
2102             'k', MDB_OPT_SETBITS, KILOS, &ka.ka_shift,
2103             'm', MDB_OPT_SETBITS, MEGS, &ka.ka_shift,
2104             'g', MDB_OPT_SETBITS, GIGS, &ka.ka_shift, NULL) != argc)
2105                 return (DCMD_USAGE);
2106 
2107         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2108                 mdb_printf("%s ", dfp->hdr1);
2109         mdb_printf("\n");
2110 
2111         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2112                 mdb_printf("%s ", dfp->hdr2);
2113         mdb_printf("\n");
2114 
2115         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2116                 mdb_printf("%s ", dfp->dashes);
2117         mdb_printf("\n");
2118 
2119         ka.ka_kvpp = &kv;
2120         if (mdb_walk("kmem_cache", (mdb_walk_cb_t)kmastat_cache, &ka) == -1) {
2121                 mdb_warn("can't walk 'kmem_cache'");
2122                 return (DCMD_ERR);
2123         }
2124 
2125         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2126                 mdb_printf("%s ", dfp->dashes);
2127         mdb_printf("\n");
2128 
2129         if (mdb_walk("vmem", (mdb_walk_cb_t)kmastat_vmem_totals, &ka) == -1) {
2130                 mdb_warn("can't walk 'vmem'");
2131                 return (DCMD_ERR);
2132         }
2133 
2134         for (dfp = kmemfmt; dfp->hdr1 != NULL; dfp++)
2135                 mdb_printf("%s ", dfp->dashes);
2136         mdb_printf("\n");
2137 
2138         mdb_printf("\n");
2139 
2140         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2141                 mdb_printf("%s ", dfp->hdr1);
2142         mdb_printf("\n");
2143 
2144         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2145                 mdb_printf("%s ", dfp->hdr2);
2146         mdb_printf("\n");
2147 
2148         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2149                 mdb_printf("%s ", dfp->dashes);
2150         mdb_printf("\n");
2151 
2152         if (mdb_walk("vmem", (mdb_walk_cb_t)kmastat_vmem, &ka.ka_shift) == -1) {
2153                 mdb_warn("can't walk 'vmem'");
2154                 return (DCMD_ERR);
2155         }
2156 
2157         for (dfp = vmemfmt; dfp->hdr1 != NULL; dfp++)
2158                 mdb_printf("%s ", dfp->dashes);
2159         mdb_printf("\n");
2160         return (DCMD_OK);
2161 }
2162 
2163 /*
2164  * Our ::kgrep callback scans the entire kernel VA space (kas).  kas is made
2165  * up of a set of 'struct seg's.  We could just scan each seg en masse, but
2166  * unfortunately, a few of the segs are both large and sparse, so we could
2167  * spend quite a bit of time scanning VAs which have no backing pages.
2168  *
2169  * So for the few very sparse segs, we skip the segment itself, and scan
2170  * the allocated vmem_segs in the vmem arena which manages that part of kas.
2171  * Currently, we do this for:
2172  *
2173  *      SEG             VMEM ARENA
2174  *      kvseg           heap_arena
2175  *      kvseg32         heap32_arena
2176  *      kvseg_core      heap_core_arena
2177  *
2178  * In addition, we skip the segkpm segment in its entirety, since it is very
2179  * sparse, and contains no new kernel data.
2180  */
2181 typedef struct kgrep_walk_data {
2182         kgrep_cb_func *kg_cb;
2183         void *kg_cbdata;
2184         uintptr_t kg_kvseg;
2185         uintptr_t kg_kvseg32;
2186         uintptr_t kg_kvseg_core;
2187         uintptr_t kg_segkpm;
2188         uintptr_t kg_heap_lp_base;
2189         uintptr_t kg_heap_lp_end;
2190 } kgrep_walk_data_t;
2191 
2192 static int
2193 kgrep_walk_seg(uintptr_t addr, const struct seg *seg, kgrep_walk_data_t *kg)
2194 {
2195         uintptr_t base = (uintptr_t)seg->s_base;
2196 
2197         if (addr == kg->kg_kvseg || addr == kg->kg_kvseg32 ||
2198             addr == kg->kg_kvseg_core)
2199                 return (WALK_NEXT);
2200 
2201         if ((uintptr_t)seg->s_ops == kg->kg_segkpm)
2202                 return (WALK_NEXT);
2203 
2204         return (kg->kg_cb(base, base + seg->s_size, kg->kg_cbdata));
2205 }
2206 
2207 /*ARGSUSED*/
2208 static int
2209 kgrep_walk_vseg(uintptr_t addr, const vmem_seg_t *seg, kgrep_walk_data_t *kg)
2210 {
2211         /*
2212          * skip large page heap address range - it is scanned by walking
2213          * allocated vmem_segs in the heap_lp_arena
2214          */
2215         if (seg->vs_start == kg->kg_heap_lp_base &&
2216             seg->vs_end == kg->kg_heap_lp_end)
2217                 return (WALK_NEXT);
2218 
2219         return (kg->kg_cb(seg->vs_start, seg->vs_end, kg->kg_cbdata));
2220 }
2221 
2222 /*ARGSUSED*/
2223 static int
2224 kgrep_xwalk_vseg(uintptr_t addr, const vmem_seg_t *seg, kgrep_walk_data_t *kg)
2225 {
2226         return (kg->kg_cb(seg->vs_start, seg->vs_end, kg->kg_cbdata));
2227 }
2228 
2229 static int
2230 kgrep_walk_vmem(uintptr_t addr, const vmem_t *vmem, kgrep_walk_data_t *kg)
2231 {
2232         mdb_walk_cb_t walk_vseg = (mdb_walk_cb_t)kgrep_walk_vseg;
2233 
2234         if (strcmp(vmem->vm_name, "heap") != 0 &&
2235             strcmp(vmem->vm_name, "heap32") != 0 &&
2236             strcmp(vmem->vm_name, "heap_core") != 0 &&
2237             strcmp(vmem->vm_name, "heap_lp") != 0)
2238                 return (WALK_NEXT);
2239 
2240         if (strcmp(vmem->vm_name, "heap_lp") == 0)
2241                 walk_vseg = (mdb_walk_cb_t)kgrep_xwalk_vseg;
2242 
2243         if (mdb_pwalk("vmem_alloc", walk_vseg, kg, addr) == -1) {
2244                 mdb_warn("couldn't walk vmem_alloc for vmem %p", addr);
2245                 return (WALK_ERR);
2246         }
2247 
2248         return (WALK_NEXT);
2249 }
2250 
2251 int
2252 kgrep_subr(kgrep_cb_func *cb, void *cbdata)
2253 {
2254         GElf_Sym kas, kvseg, kvseg32, kvseg_core, segkpm;
2255         kgrep_walk_data_t kg;
2256 
2257         if (mdb_get_state() == MDB_STATE_RUNNING) {
2258                 mdb_warn("kgrep can only be run on a system "
2259                     "dump or under kmdb; see dumpadm(1M)\n");
2260                 return (DCMD_ERR);
2261         }
2262 
2263         if (mdb_lookup_by_name("kas", &kas) == -1) {
2264                 mdb_warn("failed to locate 'kas' symbol\n");
2265                 return (DCMD_ERR);
2266         }
2267 
2268         if (mdb_lookup_by_name("kvseg", &kvseg) == -1) {
2269                 mdb_warn("failed to locate 'kvseg' symbol\n");
2270                 return (DCMD_ERR);
2271         }
2272 
2273         if (mdb_lookup_by_name("kvseg32", &kvseg32) == -1) {
2274                 mdb_warn("failed to locate 'kvseg32' symbol\n");
2275                 return (DCMD_ERR);
2276         }
2277 
2278         if (mdb_lookup_by_name("kvseg_core", &kvseg_core) == -1) {
2279                 mdb_warn("failed to locate 'kvseg_core' symbol\n");
2280                 return (DCMD_ERR);
2281         }
2282 
2283         if (mdb_lookup_by_name("segkpm_ops", &segkpm) == -1) {
2284                 mdb_warn("failed to locate 'segkpm_ops' symbol\n");
2285                 return (DCMD_ERR);
2286         }
2287 
2288         if (mdb_readvar(&kg.kg_heap_lp_base, "heap_lp_base") == -1) {
2289                 mdb_warn("failed to read 'heap_lp_base'\n");
2290                 return (DCMD_ERR);
2291         }
2292 
2293         if (mdb_readvar(&kg.kg_heap_lp_end, "heap_lp_end") == -1) {
2294                 mdb_warn("failed to read 'heap_lp_end'\n");
2295                 return (DCMD_ERR);
2296         }
2297 
2298         kg.kg_cb = cb;
2299         kg.kg_cbdata = cbdata;
2300         kg.kg_kvseg = (uintptr_t)kvseg.st_value;
2301         kg.kg_kvseg32 = (uintptr_t)kvseg32.st_value;
2302         kg.kg_kvseg_core = (uintptr_t)kvseg_core.st_value;
2303         kg.kg_segkpm = (uintptr_t)segkpm.st_value;
2304 
2305         if (mdb_pwalk("seg", (mdb_walk_cb_t)kgrep_walk_seg,
2306             &kg, kas.st_value) == -1) {
2307                 mdb_warn("failed to walk kas segments");
2308                 return (DCMD_ERR);
2309         }
2310 
2311         if (mdb_walk("vmem", (mdb_walk_cb_t)kgrep_walk_vmem, &kg) == -1) {
2312                 mdb_warn("failed to walk heap/heap32 vmem arenas");
2313                 return (DCMD_ERR);
2314         }
2315 
2316         return (DCMD_OK);
2317 }
2318 
2319 size_t
2320 kgrep_subr_pagesize(void)
2321 {
2322         return (PAGESIZE);
2323 }
2324 
2325 typedef struct file_walk_data {
2326         struct uf_entry *fw_flist;
2327         int fw_flistsz;
2328         int fw_ndx;
2329         int fw_nofiles;
2330 } file_walk_data_t;
2331 
2332 int
2333 file_walk_init(mdb_walk_state_t *wsp)
2334 {
2335         file_walk_data_t *fw;
2336         proc_t p;
2337 
2338         if (wsp->walk_addr == NULL) {
2339                 mdb_warn("file walk doesn't support global walks\n");
2340                 return (WALK_ERR);
2341         }
2342 
2343         fw = mdb_alloc(sizeof (file_walk_data_t), UM_SLEEP);
2344 
2345         if (mdb_vread(&p, sizeof (p), wsp->walk_addr) == -1) {
2346                 mdb_free(fw, sizeof (file_walk_data_t));
2347                 mdb_warn("failed to read proc structure at %p", wsp->walk_addr);
2348                 return (WALK_ERR);
2349         }
2350 
2351         if (p.p_user.u_finfo.fi_nfiles == 0) {
2352                 mdb_free(fw, sizeof (file_walk_data_t));
2353                 return (WALK_DONE);
2354         }
2355 
2356         fw->fw_nofiles = p.p_user.u_finfo.fi_nfiles;
2357         fw->fw_flistsz = sizeof (struct uf_entry) * fw->fw_nofiles;
2358         fw->fw_flist = mdb_alloc(fw->fw_flistsz, UM_SLEEP);
2359 
2360         if (mdb_vread(fw->fw_flist, fw->fw_flistsz,
2361             (uintptr_t)p.p_user.u_finfo.fi_list) == -1) {
2362                 mdb_warn("failed to read file array at %p",
2363                     p.p_user.u_finfo.fi_list);
2364                 mdb_free(fw->fw_flist, fw->fw_flistsz);
2365                 mdb_free(fw, sizeof (file_walk_data_t));
2366                 return (WALK_ERR);
2367         }
2368 
2369         fw->fw_ndx = 0;
2370         wsp->walk_data = fw;
2371 
2372         return (WALK_NEXT);
2373 }
2374 
2375 int
2376 file_walk_step(mdb_walk_state_t *wsp)
2377 {
2378         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2379         struct file file;
2380         uintptr_t fp;
2381 
2382 again:
2383         if (fw->fw_ndx == fw->fw_nofiles)
2384                 return (WALK_DONE);
2385 
2386         if ((fp = (uintptr_t)fw->fw_flist[fw->fw_ndx++].uf_file) == NULL)
2387                 goto again;
2388 
2389         (void) mdb_vread(&file, sizeof (file), (uintptr_t)fp);
2390         return (wsp->walk_callback(fp, &file, wsp->walk_cbdata));
2391 }
2392 
2393 int
2394 allfile_walk_step(mdb_walk_state_t *wsp)
2395 {
2396         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2397         struct file file;
2398         uintptr_t fp;
2399 
2400         if (fw->fw_ndx == fw->fw_nofiles)
2401                 return (WALK_DONE);
2402 
2403         if ((fp = (uintptr_t)fw->fw_flist[fw->fw_ndx++].uf_file) != NULL)
2404                 (void) mdb_vread(&file, sizeof (file), (uintptr_t)fp);
2405         else
2406                 bzero(&file, sizeof (file));
2407 
2408         return (wsp->walk_callback(fp, &file, wsp->walk_cbdata));
2409 }
2410 
2411 void
2412 file_walk_fini(mdb_walk_state_t *wsp)
2413 {
2414         file_walk_data_t *fw = (file_walk_data_t *)wsp->walk_data;
2415 
2416         mdb_free(fw->fw_flist, fw->fw_flistsz);
2417         mdb_free(fw, sizeof (file_walk_data_t));
2418 }
2419 
2420 int
2421 port_walk_init(mdb_walk_state_t *wsp)
2422 {
2423         if (wsp->walk_addr == NULL) {
2424                 mdb_warn("port walk doesn't support global walks\n");
2425                 return (WALK_ERR);
2426         }
2427 
2428         if (mdb_layered_walk("file", wsp) == -1) {
2429                 mdb_warn("couldn't walk 'file'");
2430                 return (WALK_ERR);
2431         }
2432         return (WALK_NEXT);
2433 }
2434 
2435 int
2436 port_walk_step(mdb_walk_state_t *wsp)
2437 {
2438         struct vnode    vn;
2439         uintptr_t       vp;
2440         uintptr_t       pp;
2441         struct port     port;
2442 
2443         vp = (uintptr_t)((struct file *)wsp->walk_layer)->f_vnode;
2444         if (mdb_vread(&vn, sizeof (vn), vp) == -1) {
2445                 mdb_warn("failed to read vnode_t at %p", vp);
2446                 return (WALK_ERR);
2447         }
2448         if (vn.v_type != VPORT)
2449                 return (WALK_NEXT);
2450 
2451         pp = (uintptr_t)vn.v_data;
2452         if (mdb_vread(&port, sizeof (port), pp) == -1) {
2453                 mdb_warn("failed to read port_t at %p", pp);
2454                 return (WALK_ERR);
2455         }
2456         return (wsp->walk_callback(pp, &port, wsp->walk_cbdata));
2457 }
2458 
2459 typedef struct portev_walk_data {
2460         list_node_t     *pev_node;
2461         list_node_t     *pev_last;
2462         size_t          pev_offset;
2463 } portev_walk_data_t;
2464 
2465 int
2466 portev_walk_init(mdb_walk_state_t *wsp)
2467 {
2468         portev_walk_data_t *pevd;
2469         struct port     port;
2470         struct vnode    vn;
2471         struct list     *list;
2472         uintptr_t       vp;
2473 
2474         if (wsp->walk_addr == NULL) {
2475                 mdb_warn("portev walk doesn't support global walks\n");
2476                 return (WALK_ERR);
2477         }
2478 
2479         pevd = mdb_alloc(sizeof (portev_walk_data_t), UM_SLEEP);
2480 
2481         if (mdb_vread(&port, sizeof (port), wsp->walk_addr) == -1) {
2482                 mdb_free(pevd, sizeof (portev_walk_data_t));
2483                 mdb_warn("failed to read port structure at %p", wsp->walk_addr);
2484                 return (WALK_ERR);
2485         }
2486 
2487         vp = (uintptr_t)port.port_vnode;
2488         if (mdb_vread(&vn, sizeof (vn), vp) == -1) {
2489                 mdb_free(pevd, sizeof (portev_walk_data_t));
2490                 mdb_warn("failed to read vnode_t at %p", vp);
2491                 return (WALK_ERR);
2492         }
2493 
2494         if (vn.v_type != VPORT) {
2495                 mdb_free(pevd, sizeof (portev_walk_data_t));
2496                 mdb_warn("input address (%p) does not point to an event port",
2497                     wsp->walk_addr);
2498                 return (WALK_ERR);
2499         }
2500 
2501         if (port.port_queue.portq_nent == 0) {
2502                 mdb_free(pevd, sizeof (portev_walk_data_t));
2503                 return (WALK_DONE);
2504         }
2505         list = &port.port_queue.portq_list;
2506         pevd->pev_offset = list->list_offset;
2507         pevd->pev_last = list->list_head.list_prev;
2508         pevd->pev_node = list->list_head.list_next;
2509         wsp->walk_data = pevd;
2510         return (WALK_NEXT);
2511 }
2512 
2513 int
2514 portev_walk_step(mdb_walk_state_t *wsp)
2515 {
2516         portev_walk_data_t      *pevd;
2517         struct port_kevent      ev;
2518         uintptr_t               evp;
2519 
2520         pevd = (portev_walk_data_t *)wsp->walk_data;
2521 
2522         if (pevd->pev_last == NULL)
2523                 return (WALK_DONE);
2524         if (pevd->pev_node == pevd->pev_last)
2525                 pevd->pev_last = NULL;               /* last round */
2526 
2527         evp = ((uintptr_t)(((char *)pevd->pev_node) - pevd->pev_offset));
2528         if (mdb_vread(&ev, sizeof (ev), evp) == -1) {
2529                 mdb_warn("failed to read port_kevent at %p", evp);
2530                 return (WALK_DONE);
2531         }
2532         pevd->pev_node = ev.portkev_node.list_next;
2533         return (wsp->walk_callback(evp, &ev, wsp->walk_cbdata));
2534 }
2535 
2536 void
2537 portev_walk_fini(mdb_walk_state_t *wsp)
2538 {
2539         portev_walk_data_t *pevd = (portev_walk_data_t *)wsp->walk_data;
2540 
2541         if (pevd != NULL)
2542                 mdb_free(pevd, sizeof (portev_walk_data_t));
2543 }
2544 
2545 typedef struct proc_walk_data {
2546         uintptr_t *pw_stack;
2547         int pw_depth;
2548         int pw_max;
2549 } proc_walk_data_t;
2550 
2551 int
2552 proc_walk_init(mdb_walk_state_t *wsp)
2553 {
2554         GElf_Sym sym;
2555         proc_walk_data_t *pw;
2556 
2557         if (wsp->walk_addr == NULL) {
2558                 if (mdb_lookup_by_name("p0", &sym) == -1) {
2559                         mdb_warn("failed to read 'practive'");
2560                         return (WALK_ERR);
2561                 }
2562                 wsp->walk_addr = (uintptr_t)sym.st_value;
2563         }
2564 
2565         pw = mdb_zalloc(sizeof (proc_walk_data_t), UM_SLEEP);
2566 
2567         if (mdb_readvar(&pw->pw_max, "nproc") == -1) {
2568                 mdb_warn("failed to read 'nproc'");
2569                 mdb_free(pw, sizeof (pw));
2570                 return (WALK_ERR);
2571         }
2572 
2573         pw->pw_stack = mdb_alloc(pw->pw_max * sizeof (uintptr_t), UM_SLEEP);
2574         wsp->walk_data = pw;
2575 
2576         return (WALK_NEXT);
2577 }
2578 
2579 int
2580 proc_walk_step(mdb_walk_state_t *wsp)
2581 {
2582         proc_walk_data_t *pw = wsp->walk_data;
2583         uintptr_t addr = wsp->walk_addr;
2584         uintptr_t cld, sib;
2585 
2586         int status;
2587         proc_t pr;
2588 
2589         if (mdb_vread(&pr, sizeof (proc_t), addr) == -1) {
2590                 mdb_warn("failed to read proc at %p", addr);
2591                 return (WALK_DONE);
2592         }
2593 
2594         cld = (uintptr_t)pr.p_child;
2595         sib = (uintptr_t)pr.p_sibling;
2596 
2597         if (pw->pw_depth > 0 && addr == pw->pw_stack[pw->pw_depth - 1]) {
2598                 pw->pw_depth--;
2599                 goto sib;
2600         }
2601 
2602         status = wsp->walk_callback(addr, &pr, wsp->walk_cbdata);
2603 
2604         if (status != WALK_NEXT)
2605                 return (status);
2606 
2607         if ((wsp->walk_addr = cld) != NULL) {
2608                 if (mdb_vread(&pr, sizeof (proc_t), cld) == -1) {
2609                         mdb_warn("proc %p has invalid p_child %p; skipping\n",
2610                             addr, cld);
2611                         goto sib;
2612                 }
2613 
2614                 pw->pw_stack[pw->pw_depth++] = addr;
2615 
2616                 if (pw->pw_depth == pw->pw_max) {
2617                         mdb_warn("depth %d exceeds max depth; try again\n",
2618                             pw->pw_depth);
2619                         return (WALK_DONE);
2620                 }
2621                 return (WALK_NEXT);
2622         }
2623 
2624 sib:
2625         /*
2626          * We know that p0 has no siblings, and if another starting proc
2627          * was given, we don't want to walk its siblings anyway.
2628          */
2629         if (pw->pw_depth == 0)
2630                 return (WALK_DONE);
2631 
2632         if (sib != NULL && mdb_vread(&pr, sizeof (proc_t), sib) == -1) {
2633                 mdb_warn("proc %p has invalid p_sibling %p; skipping\n",
2634                     addr, sib);
2635                 sib = NULL;
2636         }
2637 
2638         if ((wsp->walk_addr = sib) == NULL) {
2639                 if (pw->pw_depth > 0) {
2640                         wsp->walk_addr = pw->pw_stack[pw->pw_depth - 1];
2641                         return (WALK_NEXT);
2642                 }
2643                 return (WALK_DONE);
2644         }
2645 
2646         return (WALK_NEXT);
2647 }
2648 
2649 void
2650 proc_walk_fini(mdb_walk_state_t *wsp)
2651 {
2652         proc_walk_data_t *pw = wsp->walk_data;
2653 
2654         mdb_free(pw->pw_stack, pw->pw_max * sizeof (uintptr_t));
2655         mdb_free(pw, sizeof (proc_walk_data_t));
2656 }
2657 
2658 int
2659 task_walk_init(mdb_walk_state_t *wsp)
2660 {
2661         task_t task;
2662 
2663         if (mdb_vread(&task, sizeof (task_t), wsp->walk_addr) == -1) {
2664                 mdb_warn("failed to read task at %p", wsp->walk_addr);
2665                 return (WALK_ERR);
2666         }
2667         wsp->walk_addr = (uintptr_t)task.tk_memb_list;
2668         wsp->walk_data = task.tk_memb_list;
2669         return (WALK_NEXT);
2670 }
2671 
2672 int
2673 task_walk_step(mdb_walk_state_t *wsp)
2674 {
2675         proc_t proc;
2676         int status;
2677 
2678         if (mdb_vread(&proc, sizeof (proc_t), wsp->walk_addr) == -1) {
2679                 mdb_warn("failed to read proc at %p", wsp->walk_addr);
2680                 return (WALK_DONE);
2681         }
2682 
2683         status = wsp->walk_callback(wsp->walk_addr, NULL, wsp->walk_cbdata);
2684 
2685         if (proc.p_tasknext == wsp->walk_data)
2686                 return (WALK_DONE);
2687 
2688         wsp->walk_addr = (uintptr_t)proc.p_tasknext;
2689         return (status);
2690 }
2691 
2692 int
2693 project_walk_init(mdb_walk_state_t *wsp)
2694 {
2695         if (wsp->walk_addr == NULL) {
2696                 if (mdb_readvar(&wsp->walk_addr, "proj0p") == -1) {
2697                         mdb_warn("failed to read 'proj0p'");
2698                         return (WALK_ERR);
2699                 }
2700         }
2701         wsp->walk_data = (void *)wsp->walk_addr;
2702         return (WALK_NEXT);
2703 }
2704 
2705 int
2706 project_walk_step(mdb_walk_state_t *wsp)
2707 {
2708         uintptr_t addr = wsp->walk_addr;
2709         kproject_t pj;
2710         int status;
2711 
2712         if (mdb_vread(&pj, sizeof (kproject_t), addr) == -1) {
2713                 mdb_warn("failed to read project at %p", addr);
2714                 return (WALK_DONE);
2715         }
2716         status = wsp->walk_callback(addr, &pj, wsp->walk_cbdata);
2717         if (status != WALK_NEXT)
2718                 return (status);
2719         wsp->walk_addr = (uintptr_t)pj.kpj_next;
2720         if ((void *)wsp->walk_addr == wsp->walk_data)
2721                 return (WALK_DONE);
2722         return (WALK_NEXT);
2723 }
2724 
2725 static int
2726 generic_walk_step(mdb_walk_state_t *wsp)
2727 {
2728         return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
2729             wsp->walk_cbdata));
2730 }
2731 
2732 static int
2733 cpu_walk_cmp(const void *l, const void *r)
2734 {
2735         uintptr_t lhs = *((uintptr_t *)l);
2736         uintptr_t rhs = *((uintptr_t *)r);
2737         cpu_t lcpu, rcpu;
2738 
2739         (void) mdb_vread(&lcpu, sizeof (lcpu), lhs);
2740         (void) mdb_vread(&rcpu, sizeof (rcpu), rhs);
2741 
2742         if (lcpu.cpu_id < rcpu.cpu_id)
2743                 return (-1);
2744 
2745         if (lcpu.cpu_id > rcpu.cpu_id)
2746                 return (1);
2747 
2748         return (0);
2749 }
2750 
2751 typedef struct cpu_walk {
2752         uintptr_t *cw_array;
2753         int cw_ndx;
2754 } cpu_walk_t;
2755 
2756 int
2757 cpu_walk_init(mdb_walk_state_t *wsp)
2758 {
2759         cpu_walk_t *cw;
2760         int max_ncpus, i = 0;
2761         uintptr_t current, first;
2762         cpu_t cpu, panic_cpu;
2763         uintptr_t panicstr, addr;
2764         GElf_Sym sym;
2765 
2766         cw = mdb_zalloc(sizeof (cpu_walk_t), UM_SLEEP | UM_GC);
2767 
2768         if (mdb_readvar(&max_ncpus, "max_ncpus") == -1) {
2769                 mdb_warn("failed to read 'max_ncpus'");
2770                 return (WALK_ERR);
2771         }
2772 
2773         if (mdb_readvar(&panicstr, "panicstr") == -1) {
2774                 mdb_warn("failed to read 'panicstr'");
2775                 return (WALK_ERR);
2776         }
2777 
2778         if (panicstr != NULL) {
2779                 if (mdb_lookup_by_name("panic_cpu", &sym) == -1) {
2780                         mdb_warn("failed to find 'panic_cpu'");
2781                         return (WALK_ERR);
2782                 }
2783 
2784                 addr = (uintptr_t)sym.st_value;
2785 
2786                 if (mdb_vread(&panic_cpu, sizeof (cpu_t), addr) == -1) {
2787                         mdb_warn("failed to read 'panic_cpu'");
2788                         return (WALK_ERR);
2789                 }
2790         }
2791 
2792         /*
2793          * Unfortunately, there is no platform-independent way to walk
2794          * CPUs in ID order.  We therefore loop through in cpu_next order,
2795          * building an array of CPU pointers which will subsequently be
2796          * sorted.
2797          */
2798         cw->cw_array =
2799             mdb_zalloc((max_ncpus + 1) * sizeof (uintptr_t), UM_SLEEP | UM_GC);
2800 
2801         if (mdb_readvar(&first, "cpu_list") == -1) {
2802                 mdb_warn("failed to read 'cpu_list'");
2803                 return (WALK_ERR);
2804         }
2805 
2806         current = first;
2807         do {
2808                 if (mdb_vread(&cpu, sizeof (cpu), current) == -1) {
2809                         mdb_warn("failed to read cpu at %p", current);
2810                         return (WALK_ERR);
2811                 }
2812 
2813                 if (panicstr != NULL && panic_cpu.cpu_id == cpu.cpu_id) {
2814                         cw->cw_array[i++] = addr;
2815                 } else {
2816                         cw->cw_array[i++] = current;
2817                 }
2818         } while ((current = (uintptr_t)cpu.cpu_next) != first);
2819 
2820         qsort(cw->cw_array, i, sizeof (uintptr_t), cpu_walk_cmp);
2821         wsp->walk_data = cw;
2822 
2823         return (WALK_NEXT);
2824 }
2825 
2826 int
2827 cpu_walk_step(mdb_walk_state_t *wsp)
2828 {
2829         cpu_walk_t *cw = wsp->walk_data;
2830         cpu_t cpu;
2831         uintptr_t addr = cw->cw_array[cw->cw_ndx++];
2832 
2833         if (addr == NULL)
2834                 return (WALK_DONE);
2835 
2836         if (mdb_vread(&cpu, sizeof (cpu), addr) == -1) {
2837                 mdb_warn("failed to read cpu at %p", addr);
2838                 return (WALK_DONE);
2839         }
2840 
2841         return (wsp->walk_callback(addr, &cpu, wsp->walk_cbdata));
2842 }
2843 
2844 typedef struct cpuinfo_data {
2845         intptr_t cid_cpu;
2846         uintptr_t **cid_ithr;
2847         char    cid_print_head;
2848         char    cid_print_thr;
2849         char    cid_print_ithr;
2850         char    cid_print_flags;
2851 } cpuinfo_data_t;
2852 
2853 int
2854 cpuinfo_walk_ithread(uintptr_t addr, const kthread_t *thr, cpuinfo_data_t *cid)
2855 {
2856         cpu_t c;
2857         int id;
2858         uint8_t pil;
2859 
2860         if (!(thr->t_flag & T_INTR_THREAD) || thr->t_state == TS_FREE)
2861                 return (WALK_NEXT);
2862 
2863         if (thr->t_bound_cpu == NULL) {
2864                 mdb_warn("thr %p is intr thread w/out a CPU\n", addr);
2865                 return (WALK_NEXT);
2866         }
2867 
2868         (void) mdb_vread(&c, sizeof (c), (uintptr_t)thr->t_bound_cpu);
2869 
2870         if ((id = c.cpu_id) >= NCPU) {
2871                 mdb_warn("CPU %p has id (%d) greater than NCPU (%d)\n",
2872                     thr->t_bound_cpu, id, NCPU);
2873                 return (WALK_NEXT);
2874         }
2875 
2876         if ((pil = thr->t_pil) >= NINTR) {
2877                 mdb_warn("thread %p has pil (%d) greater than %d\n",
2878                     addr, pil, NINTR);
2879                 return (WALK_NEXT);
2880         }
2881 
2882         if (cid->cid_ithr[id][pil] != NULL) {
2883                 mdb_warn("CPU %d has multiple threads at pil %d (at least "
2884                     "%p and %p)\n", id, pil, addr, cid->cid_ithr[id][pil]);
2885                 return (WALK_NEXT);
2886         }
2887 
2888         cid->cid_ithr[id][pil] = addr;
2889 
2890         return (WALK_NEXT);
2891 }
2892 
2893 #define CPUINFO_IDWIDTH         3
2894 #define CPUINFO_FLAGWIDTH       9
2895 
2896 #ifdef _LP64
2897 #if defined(__amd64)
2898 #define CPUINFO_TWIDTH          16
2899 #define CPUINFO_CPUWIDTH        16
2900 #else
2901 #define CPUINFO_CPUWIDTH        11
2902 #define CPUINFO_TWIDTH          11
2903 #endif
2904 #else
2905 #define CPUINFO_CPUWIDTH        8
2906 #define CPUINFO_TWIDTH          8
2907 #endif
2908 
2909 #define CPUINFO_THRDELT         (CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH + 9)
2910 #define CPUINFO_FLAGDELT        (CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH + 4)
2911 #define CPUINFO_ITHRDELT        4
2912 
2913 #define CPUINFO_INDENT  mdb_printf("%*s", CPUINFO_THRDELT, \
2914     flagline < nflaglines ? flagbuf[flagline++] : "")
2915 
2916 int
2917 cpuinfo_walk_cpu(uintptr_t addr, const cpu_t *cpu, cpuinfo_data_t *cid)
2918 {
2919         kthread_t t;
2920         disp_t disp;
2921         proc_t p;
2922         uintptr_t pinned;
2923         char **flagbuf;
2924         int nflaglines = 0, flagline = 0, bspl, rval = WALK_NEXT;
2925 
2926         const char *flags[] = {
2927             "RUNNING", "READY", "QUIESCED", "EXISTS",
2928             "ENABLE", "OFFLINE", "POWEROFF", "FROZEN",
2929             "SPARE", "FAULTED", NULL
2930         };
2931 
2932         if (cid->cid_cpu != -1) {
2933                 if (addr != cid->cid_cpu && cpu->cpu_id != cid->cid_cpu)
2934                         return (WALK_NEXT);
2935 
2936                 /*
2937                  * Set cid_cpu to -1 to indicate that we found a matching CPU.
2938                  */
2939                 cid->cid_cpu = -1;
2940                 rval = WALK_DONE;
2941         }
2942 
2943         if (cid->cid_print_head) {
2944                 mdb_printf("%3s %-*s %3s %4s %4s %3s %4s %5s %-6s %-*s %s\n",
2945                     "ID", CPUINFO_CPUWIDTH, "ADDR", "FLG", "NRUN", "BSPL",
2946                     "PRI", "RNRN", "KRNRN", "SWITCH", CPUINFO_TWIDTH, "THREAD",
2947                     "PROC");
2948                 cid->cid_print_head = FALSE;
2949         }
2950 
2951         bspl = cpu->cpu_base_spl;
2952 
2953         if (mdb_vread(&disp, sizeof (disp_t), (uintptr_t)cpu->cpu_disp) == -1) {
2954                 mdb_warn("failed to read disp_t at %p", cpu->cpu_disp);
2955                 return (WALK_ERR);
2956         }
2957 
2958         mdb_printf("%3d %0*p %3x %4d %4d ",
2959             cpu->cpu_id, CPUINFO_CPUWIDTH, addr, cpu->cpu_flags,
2960             disp.disp_nrunnable, bspl);
2961 
2962         if (mdb_vread(&t, sizeof (t), (uintptr_t)cpu->cpu_thread) != -1) {
2963                 mdb_printf("%3d ", t.t_pri);
2964         } else {
2965                 mdb_printf("%3s ", "-");
2966         }
2967 
2968         mdb_printf("%4s %5s ", cpu->cpu_runrun ? "yes" : "no",
2969             cpu->cpu_kprunrun ? "yes" : "no");
2970 
2971         if (cpu->cpu_last_swtch) {
2972                 mdb_printf("t-%-4d ",
2973                     (clock_t)mdb_get_lbolt() - cpu->cpu_last_swtch);
2974         } else {
2975                 mdb_printf("%-6s ", "-");
2976         }
2977 
2978         mdb_printf("%0*p", CPUINFO_TWIDTH, cpu->cpu_thread);
2979 
2980         if (cpu->cpu_thread == cpu->cpu_idle_thread)
2981                 mdb_printf(" (idle)\n");
2982         else if (cpu->cpu_thread == NULL)
2983                 mdb_printf(" -\n");
2984         else {
2985                 if (mdb_vread(&p, sizeof (p), (uintptr_t)t.t_procp) != -1) {
2986                         mdb_printf(" %s\n", p.p_user.u_comm);
2987                 } else {
2988                         mdb_printf(" ?\n");
2989                 }
2990         }
2991 
2992         flagbuf = mdb_zalloc(sizeof (flags), UM_SLEEP | UM_GC);
2993 
2994         if (cid->cid_print_flags) {
2995                 int first = 1, i, j, k;
2996                 char *s;
2997 
2998                 cid->cid_print_head = TRUE;
2999 
3000                 for (i = 1, j = 0; flags[j] != NULL; i <<= 1, j++) {
3001                         if (!(cpu->cpu_flags & i))
3002                                 continue;
3003 
3004                         if (first) {
3005                                 s = mdb_alloc(CPUINFO_THRDELT + 1,
3006                                     UM_GC | UM_SLEEP);
3007 
3008                                 (void) mdb_snprintf(s, CPUINFO_THRDELT + 1,
3009                                     "%*s|%*s", CPUINFO_FLAGDELT, "",
3010                                     CPUINFO_THRDELT - 1 - CPUINFO_FLAGDELT, "");
3011                                 flagbuf[nflaglines++] = s;
3012                         }
3013 
3014                         s = mdb_alloc(CPUINFO_THRDELT + 1, UM_GC | UM_SLEEP);
3015                         (void) mdb_snprintf(s, CPUINFO_THRDELT + 1, "%*s%*s %s",
3016                             CPUINFO_IDWIDTH + CPUINFO_CPUWIDTH -
3017                             CPUINFO_FLAGWIDTH, "", CPUINFO_FLAGWIDTH, flags[j],
3018                             first ? "<--+" : "");
3019 
3020                         for (k = strlen(s); k < CPUINFO_THRDELT; k++)
3021                                 s[k] = ' ';
3022                         s[k] = '\0';
3023 
3024                         flagbuf[nflaglines++] = s;
3025                         first = 0;
3026                 }
3027         }
3028 
3029         if (cid->cid_print_ithr) {
3030                 int i, found_one = FALSE;
3031                 int print_thr = disp.disp_nrunnable && cid->cid_print_thr;
3032 
3033                 for (i = NINTR - 1; i >= 0; i--) {
3034                         uintptr_t iaddr = cid->cid_ithr[cpu->cpu_id][i];
3035 
3036                         if (iaddr == NULL)
3037                                 continue;
3038 
3039                         if (!found_one) {
3040                                 found_one = TRUE;
3041 
3042                                 CPUINFO_INDENT;
3043                                 mdb_printf("%c%*s|\n", print_thr ? '|' : ' ',
3044                                     CPUINFO_ITHRDELT, "");
3045 
3046                                 CPUINFO_INDENT;
3047                                 mdb_printf("%c%*s+--> %3s %s\n",
3048                                     print_thr ? '|' : ' ', CPUINFO_ITHRDELT,
3049                                     "", "PIL", "THREAD");
3050                         }
3051 
3052                         if (mdb_vread(&t, sizeof (t), iaddr) == -1) {
3053                                 mdb_warn("failed to read kthread_t at %p",
3054                                     iaddr);
3055                                 return (WALK_ERR);
3056                         }
3057 
3058                         CPUINFO_INDENT;
3059                         mdb_printf("%c%*s     %3d %0*p\n",
3060                             print_thr ? '|' : ' ', CPUINFO_ITHRDELT, "",
3061                             t.t_pil, CPUINFO_TWIDTH, iaddr);
3062 
3063                         pinned = (uintptr_t)t.t_intr;
3064                 }
3065 
3066                 if (found_one && pinned != NULL) {
3067                         cid->cid_print_head = TRUE;
3068                         (void) strcpy(p.p_user.u_comm, "?");
3069 
3070                         if (mdb_vread(&t, sizeof (t),
3071                             (uintptr_t)pinned) == -1) {
3072                                 mdb_warn("failed to read kthread_t at %p",
3073                                     pinned);
3074                                 return (WALK_ERR);
3075                         }
3076                         if (mdb_vread(&p, sizeof (p),
3077                             (uintptr_t)t.t_procp) == -1) {
3078                                 mdb_warn("failed to read proc_t at %p",
3079                                     t.t_procp);
3080                                 return (WALK_ERR);
3081                         }
3082 
3083                         CPUINFO_INDENT;
3084                         mdb_printf("%c%*s     %3s %0*p %s\n",
3085                             print_thr ? '|' : ' ', CPUINFO_ITHRDELT, "", "-",
3086                             CPUINFO_TWIDTH, pinned,
3087                             pinned == (uintptr_t)cpu->cpu_idle_thread ?
3088                             "(idle)" : p.p_user.u_comm);
3089                 }
3090         }
3091 
3092         if (disp.disp_nrunnable && cid->cid_print_thr) {
3093                 dispq_t *dq;
3094 
3095                 int i, npri = disp.disp_npri;
3096 
3097                 dq = mdb_alloc(sizeof (dispq_t) * npri, UM_SLEEP | UM_GC);
3098 
3099                 if (mdb_vread(dq, sizeof (dispq_t) * npri,
3100                     (uintptr_t)disp.disp_q) == -1) {
3101                         mdb_warn("failed to read dispq_t at %p", disp.disp_q);
3102                         return (WALK_ERR);
3103                 }
3104 
3105                 CPUINFO_INDENT;
3106                 mdb_printf("|\n");
3107 
3108                 CPUINFO_INDENT;
3109                 mdb_printf("+-->  %3s %-*s %s\n", "PRI",
3110                     CPUINFO_TWIDTH, "THREAD", "PROC");
3111 
3112                 for (i = npri - 1; i >= 0; i--) {
3113                         uintptr_t taddr = (uintptr_t)dq[i].dq_first;
3114 
3115                         while (taddr != NULL) {
3116                                 if (mdb_vread(&t, sizeof (t), taddr) == -1) {
3117                                         mdb_warn("failed to read kthread_t "
3118                                             "at %p", taddr);
3119                                         return (WALK_ERR);
3120                                 }
3121                                 if (mdb_vread(&p, sizeof (p),
3122                                     (uintptr_t)t.t_procp) == -1) {
3123                                         mdb_warn("failed to read proc_t at %p",
3124                                             t.t_procp);
3125                                         return (WALK_ERR);
3126                                 }
3127 
3128                                 CPUINFO_INDENT;
3129                                 mdb_printf("      %3d %0*p %s\n", t.t_pri,
3130                                     CPUINFO_TWIDTH, taddr, p.p_user.u_comm);
3131 
3132                                 taddr = (uintptr_t)t.t_link;
3133                         }
3134                 }
3135                 cid->cid_print_head = TRUE;
3136         }
3137 
3138         while (flagline < nflaglines)
3139                 mdb_printf("%s\n", flagbuf[flagline++]);
3140 
3141         if (cid->cid_print_head)
3142                 mdb_printf("\n");
3143 
3144         return (rval);
3145 }
3146 
3147 int
3148 cpuinfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3149 {
3150         uint_t verbose = FALSE;
3151         cpuinfo_data_t cid;
3152 
3153         cid.cid_print_ithr = FALSE;
3154         cid.cid_print_thr = FALSE;
3155         cid.cid_print_flags = FALSE;
3156         cid.cid_print_head = DCMD_HDRSPEC(flags) ? TRUE : FALSE;
3157         cid.cid_cpu = -1;
3158 
3159         if (flags & DCMD_ADDRSPEC)
3160                 cid.cid_cpu = addr;
3161 
3162         if (mdb_getopts(argc, argv,
3163             'v', MDB_OPT_SETBITS, TRUE, &verbose, NULL) != argc)
3164                 return (DCMD_USAGE);
3165 
3166         if (verbose) {
3167                 cid.cid_print_ithr = TRUE;
3168                 cid.cid_print_thr = TRUE;
3169                 cid.cid_print_flags = TRUE;
3170                 cid.cid_print_head = TRUE;
3171         }
3172 
3173         if (cid.cid_print_ithr) {
3174                 int i;
3175 
3176                 cid.cid_ithr = mdb_alloc(sizeof (uintptr_t **)
3177                     * NCPU, UM_SLEEP | UM_GC);
3178 
3179                 for (i = 0; i < NCPU; i++)
3180                         cid.cid_ithr[i] = mdb_zalloc(sizeof (uintptr_t *) *
3181                             NINTR, UM_SLEEP | UM_GC);
3182 
3183                 if (mdb_walk("thread", (mdb_walk_cb_t)cpuinfo_walk_ithread,
3184                     &cid) == -1) {
3185                         mdb_warn("couldn't walk thread");
3186                         return (DCMD_ERR);
3187                 }
3188         }
3189 
3190         if (mdb_walk("cpu", (mdb_walk_cb_t)cpuinfo_walk_cpu, &cid) == -1) {
3191                 mdb_warn("can't walk cpus");
3192                 return (DCMD_ERR);
3193         }
3194 
3195         if (cid.cid_cpu != -1) {
3196                 /*
3197                  * We didn't find this CPU when we walked through the CPUs
3198                  * (i.e. the address specified doesn't show up in the "cpu"
3199                  * walk).  However, the specified address may still correspond
3200                  * to a valid cpu_t (for example, if the specified address is
3201                  * the actual panicking cpu_t and not the cached panic_cpu).
3202                  * Point is:  even if we didn't find it, we still want to try
3203                  * to print the specified address as a cpu_t.
3204                  */
3205                 cpu_t cpu;
3206 
3207                 if (mdb_vread(&cpu, sizeof (cpu), cid.cid_cpu) == -1) {
3208                         mdb_warn("%p is neither a valid CPU ID nor a "
3209                             "valid cpu_t address\n", cid.cid_cpu);
3210                         return (DCMD_ERR);
3211                 }
3212 
3213                 (void) cpuinfo_walk_cpu(cid.cid_cpu, &cpu, &cid);
3214         }
3215 
3216         return (DCMD_OK);
3217 }
3218 
3219 /*ARGSUSED*/
3220 int
3221 flipone(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3222 {
3223         int i;
3224 
3225         if (!(flags & DCMD_ADDRSPEC))
3226                 return (DCMD_USAGE);
3227 
3228         for (i = 0; i < sizeof (addr) * NBBY; i++)
3229                 mdb_printf("%p\n", addr ^ (1UL << i));
3230 
3231         return (DCMD_OK);
3232 }
3233 
3234 int
3235 as2proc_walk(uintptr_t addr, const proc_t *p, struct as **asp)
3236 {
3237         if (p->p_as == *asp)
3238                 mdb_printf("%p\n", addr);
3239         return (WALK_NEXT);
3240 }
3241 
3242 /*ARGSUSED*/
3243 int
3244 as2proc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3245 {
3246         if (!(flags & DCMD_ADDRSPEC) || argc != 0)
3247                 return (DCMD_USAGE);
3248 
3249         if (mdb_walk("proc", (mdb_walk_cb_t)as2proc_walk, &addr) == -1) {
3250                 mdb_warn("failed to walk proc");
3251                 return (DCMD_ERR);
3252         }
3253 
3254         return (DCMD_OK);
3255 }
3256 
3257 /*ARGSUSED*/
3258 int
3259 ptree_walk(uintptr_t addr, const proc_t *p, void *ignored)
3260 {
3261         proc_t parent;
3262         int ident = 0;
3263         uintptr_t paddr;
3264 
3265         for (paddr = (uintptr_t)p->p_parent; paddr != NULL; ident += 5) {
3266                 mdb_vread(&parent, sizeof (parent), paddr);
3267                 paddr = (uintptr_t)parent.p_parent;
3268         }
3269 
3270         mdb_inc_indent(ident);
3271         mdb_printf("%0?p  %s\n", addr, p->p_user.u_comm);
3272         mdb_dec_indent(ident);
3273 
3274         return (WALK_NEXT);
3275 }
3276 
3277 void
3278 ptree_ancestors(uintptr_t addr, uintptr_t start)
3279 {
3280         proc_t p;
3281 
3282         if (mdb_vread(&p, sizeof (p), addr) == -1) {
3283                 mdb_warn("couldn't read ancestor at %p", addr);
3284                 return;
3285         }
3286 
3287         if (p.p_parent != NULL)
3288                 ptree_ancestors((uintptr_t)p.p_parent, start);
3289 
3290         if (addr != start)
3291                 (void) ptree_walk(addr, &p, NULL);
3292 }
3293 
3294 /*ARGSUSED*/
3295 int
3296 ptree(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3297 {
3298         if (!(flags & DCMD_ADDRSPEC))
3299                 addr = NULL;
3300         else
3301                 ptree_ancestors(addr, addr);
3302 
3303         if (mdb_pwalk("proc", (mdb_walk_cb_t)ptree_walk, NULL, addr) == -1) {
3304                 mdb_warn("couldn't walk 'proc'");
3305                 return (DCMD_ERR);
3306         }
3307 
3308         return (DCMD_OK);
3309 }
3310 
3311 /*ARGSUSED*/
3312 static int
3313 fd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3314 {
3315         int fdnum;
3316         const mdb_arg_t *argp = &argv[0];
3317         proc_t p;
3318         uf_entry_t uf;
3319 
3320         if ((flags & DCMD_ADDRSPEC) == 0) {
3321                 mdb_warn("fd doesn't give global information\n");
3322                 return (DCMD_ERR);
3323         }
3324         if (argc != 1)
3325                 return (DCMD_USAGE);
3326 
3327         if (argp->a_type == MDB_TYPE_IMMEDIATE)
3328                 fdnum = argp->a_un.a_val;
3329         else
3330                 fdnum = mdb_strtoull(argp->a_un.a_str);
3331 
3332         if (mdb_vread(&p, sizeof (struct proc), addr) == -1) {
3333                 mdb_warn("couldn't read proc_t at %p", addr);
3334                 return (DCMD_ERR);
3335         }
3336         if (fdnum > p.p_user.u_finfo.fi_nfiles) {
3337                 mdb_warn("process %p only has %d files open.\n",
3338                     addr, p.p_user.u_finfo.fi_nfiles);
3339                 return (DCMD_ERR);
3340         }
3341         if (mdb_vread(&uf, sizeof (uf_entry_t),
3342             (uintptr_t)&p.p_user.u_finfo.fi_list[fdnum]) == -1) {
3343                 mdb_warn("couldn't read uf_entry_t at %p",
3344                     &p.p_user.u_finfo.fi_list[fdnum]);
3345                 return (DCMD_ERR);
3346         }
3347 
3348         mdb_printf("%p\n", uf.uf_file);
3349         return (DCMD_OK);
3350 }
3351 
3352 /*ARGSUSED*/
3353 static int
3354 pid2proc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3355 {
3356         pid_t pid = (pid_t)addr;
3357 
3358         if (argc != 0)
3359                 return (DCMD_USAGE);
3360 
3361         if ((addr = mdb_pid2proc(pid, NULL)) == NULL) {
3362                 mdb_warn("PID 0t%d not found\n", pid);
3363                 return (DCMD_ERR);
3364         }
3365 
3366         mdb_printf("%p\n", addr);
3367         return (DCMD_OK);
3368 }
3369 
3370 static char *sysfile_cmd[] = {
3371         "exclude:",
3372         "include:",
3373         "forceload:",
3374         "rootdev:",
3375         "rootfs:",
3376         "swapdev:",
3377         "swapfs:",
3378         "moddir:",
3379         "set",
3380         "unknown",
3381 };
3382 
3383 static char *sysfile_ops[] = { "", "=", "&", "|" };
3384 
3385 /*ARGSUSED*/
3386 static int
3387 sysfile_vmem_seg(uintptr_t addr, const vmem_seg_t *vsp, void **target)
3388 {
3389         if (vsp->vs_type == VMEM_ALLOC && (void *)vsp->vs_start == *target) {
3390                 *target = NULL;
3391                 return (WALK_DONE);
3392         }
3393         return (WALK_NEXT);
3394 }
3395 
3396 /*ARGSUSED*/
3397 static int
3398 sysfile(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3399 {
3400         struct sysparam *sysp, sys;
3401         char var[256];
3402         char modname[256];
3403         char val[256];
3404         char strval[256];
3405         vmem_t *mod_sysfile_arena;
3406         void *straddr;
3407 
3408         if (mdb_readvar(&sysp, "sysparam_hd") == -1) {
3409                 mdb_warn("failed to read sysparam_hd");
3410                 return (DCMD_ERR);
3411         }
3412 
3413         if (mdb_readvar(&mod_sysfile_arena, "mod_sysfile_arena") == -1) {
3414                 mdb_warn("failed to read mod_sysfile_arena");
3415                 return (DCMD_ERR);
3416         }
3417 
3418         while (sysp != NULL) {
3419                 var[0] = '\0';
3420                 val[0] = '\0';
3421                 modname[0] = '\0';
3422                 if (mdb_vread(&sys, sizeof (sys), (uintptr_t)sysp) == -1) {
3423                         mdb_warn("couldn't read sysparam %p", sysp);
3424                         return (DCMD_ERR);
3425                 }
3426                 if (sys.sys_modnam != NULL &&
3427                     mdb_readstr(modname, 256,
3428                     (uintptr_t)sys.sys_modnam) == -1) {
3429                         mdb_warn("couldn't read modname in %p", sysp);
3430                         return (DCMD_ERR);
3431                 }
3432                 if (sys.sys_ptr != NULL &&
3433                     mdb_readstr(var, 256, (uintptr_t)sys.sys_ptr) == -1) {
3434                         mdb_warn("couldn't read ptr in %p", sysp);
3435                         return (DCMD_ERR);
3436                 }
3437                 if (sys.sys_op != SETOP_NONE) {
3438                         /*
3439                          * Is this an int or a string?  We determine this
3440                          * by checking whether straddr is contained in
3441                          * mod_sysfile_arena.  If so, the walker will set
3442                          * straddr to NULL.
3443                          */
3444                         straddr = (void *)(uintptr_t)sys.sys_info;
3445                         if (sys.sys_op == SETOP_ASSIGN &&
3446                             sys.sys_info != 0 &&
3447                             mdb_pwalk("vmem_seg",
3448                             (mdb_walk_cb_t)sysfile_vmem_seg, &straddr,
3449                             (uintptr_t)mod_sysfile_arena) == 0 &&
3450                             straddr == NULL &&
3451                             mdb_readstr(strval, 256,
3452                             (uintptr_t)sys.sys_info) != -1) {
3453                                 (void) mdb_snprintf(val, sizeof (val), "\"%s\"",
3454                                     strval);
3455                         } else {
3456                                 (void) mdb_snprintf(val, sizeof (val),
3457                                     "0x%llx [0t%llu]", sys.sys_info,
3458                                     sys.sys_info);
3459                         }
3460                 }
3461                 mdb_printf("%s %s%s%s%s%s\n", sysfile_cmd[sys.sys_type],
3462                     modname, modname[0] == '\0' ? "" : ":",
3463                     var, sysfile_ops[sys.sys_op], val);
3464 
3465                 sysp = sys.sys_next;
3466         }
3467 
3468         return (DCMD_OK);
3469 }
3470 
3471 int
3472 didmatch(uintptr_t addr, const kthread_t *thr, kt_did_t *didp)
3473 {
3474 
3475         if (*didp == thr->t_did) {
3476                 mdb_printf("%p\n", addr);
3477                 return (WALK_DONE);
3478         } else
3479                 return (WALK_NEXT);
3480 }
3481 
3482 /*ARGSUSED*/
3483 int
3484 did2thread(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3485 {
3486         const mdb_arg_t *argp = &argv[0];
3487         kt_did_t        did;
3488 
3489         if (argc != 1)
3490                 return (DCMD_USAGE);
3491 
3492         did = (kt_did_t)mdb_strtoull(argp->a_un.a_str);
3493 
3494         if (mdb_walk("thread", (mdb_walk_cb_t)didmatch, (void *)&did) == -1) {
3495                 mdb_warn("failed to walk thread");
3496                 return (DCMD_ERR);
3497 
3498         }
3499         return (DCMD_OK);
3500 
3501 }
3502 
3503 static int
3504 errorq_walk_init(mdb_walk_state_t *wsp)
3505 {
3506         if (wsp->walk_addr == NULL &&
3507             mdb_readvar(&wsp->walk_addr, "errorq_list") == -1) {
3508                 mdb_warn("failed to read errorq_list");
3509                 return (WALK_ERR);
3510         }
3511 
3512         return (WALK_NEXT);
3513 }
3514 
3515 static int
3516 errorq_walk_step(mdb_walk_state_t *wsp)
3517 {
3518         uintptr_t addr = wsp->walk_addr;
3519         errorq_t eq;
3520 
3521         if (addr == NULL)
3522                 return (WALK_DONE);
3523 
3524         if (mdb_vread(&eq, sizeof (eq), addr) == -1) {
3525                 mdb_warn("failed to read errorq at %p", addr);
3526                 return (WALK_ERR);
3527         }
3528 
3529         wsp->walk_addr = (uintptr_t)eq.eq_next;
3530         return (wsp->walk_callback(addr, &eq, wsp->walk_cbdata));
3531 }
3532 
3533 typedef struct eqd_walk_data {
3534         uintptr_t *eqd_stack;
3535         void *eqd_buf;
3536         ulong_t eqd_qpos;
3537         ulong_t eqd_qlen;
3538         size_t eqd_size;
3539 } eqd_walk_data_t;
3540 
3541 /*
3542  * In order to walk the list of pending error queue elements, we push the
3543  * addresses of the corresponding data buffers in to the eqd_stack array.
3544  * The error lists are in reverse chronological order when iterating using
3545  * eqe_prev, so we then pop things off the top in eqd_walk_step so that the
3546  * walker client gets addresses in order from oldest error to newest error.
3547  */
3548 static void
3549 eqd_push_list(eqd_walk_data_t *eqdp, uintptr_t addr)
3550 {
3551         errorq_elem_t eqe;
3552 
3553         while (addr != NULL) {
3554                 if (mdb_vread(&eqe, sizeof (eqe), addr) != sizeof (eqe)) {
3555                         mdb_warn("failed to read errorq element at %p", addr);
3556                         break;
3557                 }
3558 
3559                 if (eqdp->eqd_qpos == eqdp->eqd_qlen) {
3560                         mdb_warn("errorq is overfull -- more than %lu "
3561                             "elems found\n", eqdp->eqd_qlen);
3562                         break;
3563                 }
3564 
3565                 eqdp->eqd_stack[eqdp->eqd_qpos++] = (uintptr_t)eqe.eqe_data;
3566                 addr = (uintptr_t)eqe.eqe_prev;
3567         }
3568 }
3569 
3570 static int
3571 eqd_walk_init(mdb_walk_state_t *wsp)
3572 {
3573         eqd_walk_data_t *eqdp;
3574         errorq_elem_t eqe, *addr;
3575         errorq_t eq;
3576         ulong_t i;
3577 
3578         if (mdb_vread(&eq, sizeof (eq), wsp->walk_addr) == -1) {
3579                 mdb_warn("failed to read errorq at %p", wsp->walk_addr);
3580                 return (WALK_ERR);
3581         }
3582 
3583         if (eq.eq_ptail != NULL &&
3584             mdb_vread(&eqe, sizeof (eqe), (uintptr_t)eq.eq_ptail) == -1) {
3585                 mdb_warn("failed to read errorq element at %p", eq.eq_ptail);
3586                 return (WALK_ERR);
3587         }
3588 
3589         eqdp = mdb_alloc(sizeof (eqd_walk_data_t), UM_SLEEP);
3590         wsp->walk_data = eqdp;
3591 
3592         eqdp->eqd_stack = mdb_zalloc(sizeof (uintptr_t) * eq.eq_qlen, UM_SLEEP);
3593         eqdp->eqd_buf = mdb_alloc(eq.eq_size, UM_SLEEP);
3594         eqdp->eqd_qlen = eq.eq_qlen;
3595         eqdp->eqd_qpos = 0;
3596         eqdp->eqd_size = eq.eq_size;
3597 
3598         /*
3599          * The newest elements in the queue are on the pending list, so we
3600          * push those on to our stack first.
3601          */
3602         eqd_push_list(eqdp, (uintptr_t)eq.eq_pend);
3603 
3604         /*
3605          * If eq_ptail is set, it may point to a subset of the errors on the
3606          * pending list in the event a casptr() failed; if ptail's data is
3607          * already in our stack, NULL out eq_ptail and ignore it.
3608          */
3609         if (eq.eq_ptail != NULL) {
3610                 for (i = 0; i < eqdp->eqd_qpos; i++) {
3611                         if (eqdp->eqd_stack[i] == (uintptr_t)eqe.eqe_data) {
3612                                 eq.eq_ptail = NULL;
3613                                 break;
3614                         }
3615                 }
3616         }
3617 
3618         /*
3619          * If eq_phead is set, it has the processing list in order from oldest
3620          * to newest.  Use this to recompute eq_ptail as best we can and then
3621          * we nicely fall into eqd_push_list() of eq_ptail below.
3622          */
3623         for (addr = eq.eq_phead; addr != NULL && mdb_vread(&eqe, sizeof (eqe),
3624             (uintptr_t)addr) == sizeof (eqe); addr = eqe.eqe_next)
3625                 eq.eq_ptail = addr;
3626 
3627         /*
3628          * The oldest elements in the queue are on the processing list, subject
3629          * to machinations in the if-clauses above.  Push any such elements.
3630          */
3631         eqd_push_list(eqdp, (uintptr_t)eq.eq_ptail);
3632         return (WALK_NEXT);
3633 }
3634 
3635 static int
3636 eqd_walk_step(mdb_walk_state_t *wsp)
3637 {
3638         eqd_walk_data_t *eqdp = wsp->walk_data;
3639         uintptr_t addr;
3640 
3641         if (eqdp->eqd_qpos == 0)
3642                 return (WALK_DONE);
3643 
3644         addr = eqdp->eqd_stack[--eqdp->eqd_qpos];
3645 
3646         if (mdb_vread(eqdp->eqd_buf, eqdp->eqd_size, addr) != eqdp->eqd_size) {
3647                 mdb_warn("failed to read errorq data at %p", addr);
3648                 return (WALK_ERR);
3649         }
3650 
3651         return (wsp->walk_callback(addr, eqdp->eqd_buf, wsp->walk_cbdata));
3652 }
3653 
3654 static void
3655 eqd_walk_fini(mdb_walk_state_t *wsp)
3656 {
3657         eqd_walk_data_t *eqdp = wsp->walk_data;
3658 
3659         mdb_free(eqdp->eqd_stack, sizeof (uintptr_t) * eqdp->eqd_qlen);
3660         mdb_free(eqdp->eqd_buf, eqdp->eqd_size);
3661         mdb_free(eqdp, sizeof (eqd_walk_data_t));
3662 }
3663 
3664 #define EQKSVAL(eqv, what) (eqv.eq_kstat.what.value.ui64)
3665 
3666 static int
3667 errorq(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3668 {
3669         int i;
3670         errorq_t eq;
3671         uint_t opt_v = FALSE;
3672 
3673         if (!(flags & DCMD_ADDRSPEC)) {
3674                 if (mdb_walk_dcmd("errorq", "errorq", argc, argv) == -1) {
3675                         mdb_warn("can't walk 'errorq'");
3676                         return (DCMD_ERR);
3677                 }
3678                 return (DCMD_OK);
3679         }
3680 
3681         i = mdb_getopts(argc, argv, 'v', MDB_OPT_SETBITS, TRUE, &opt_v, NULL);
3682         argc -= i;
3683         argv += i;
3684 
3685         if (argc != 0)
3686                 return (DCMD_USAGE);
3687 
3688         if (opt_v || DCMD_HDRSPEC(flags)) {
3689                 mdb_printf("%<u>%-11s %-16s %1s %1s %1s ",
3690                     "ADDR", "NAME", "S", "V", "N");
3691                 if (!opt_v) {
3692                         mdb_printf("%7s %7s %7s%</u>\n",
3693                             "ACCEPT", "DROP", "LOG");
3694                 } else {
3695                         mdb_printf("%5s %6s %6s %3s %16s%</u>\n",
3696                             "KSTAT", "QLEN", "SIZE", "IPL", "FUNC");
3697                 }
3698         }
3699 
3700         if (mdb_vread(&eq, sizeof (eq), addr) != sizeof (eq)) {
3701                 mdb_warn("failed to read errorq at %p", addr);
3702                 return (DCMD_ERR);
3703         }
3704 
3705         mdb_printf("%-11p %-16s %c %c %c ", addr, eq.eq_name,
3706             (eq.eq_flags & ERRORQ_ACTIVE) ? '+' : '-',
3707             (eq.eq_flags & ERRORQ_VITAL) ? '!' : ' ',
3708             (eq.eq_flags & ERRORQ_NVLIST) ? '*' : ' ');
3709 
3710         if (!opt_v) {
3711                 mdb_printf("%7llu %7llu %7llu\n",
3712                     EQKSVAL(eq, eqk_dispatched) + EQKSVAL(eq, eqk_committed),
3713                     EQKSVAL(eq, eqk_dropped) + EQKSVAL(eq, eqk_reserve_fail) +
3714                     EQKSVAL(eq, eqk_commit_fail), EQKSVAL(eq, eqk_logged));
3715         } else {
3716                 mdb_printf("%5s %6lu %6lu %3u %a\n",
3717                     "  |  ", eq.eq_qlen, eq.eq_size, eq.eq_ipl, eq.eq_func);
3718                 mdb_printf("%38s\n%41s"
3719                     "%12s %llu\n"
3720                     "%53s %llu\n"
3721                     "%53s %llu\n"
3722                     "%53s %llu\n"
3723                     "%53s %llu\n"
3724                     "%53s %llu\n"
3725                     "%53s %llu\n"
3726                     "%53s %llu\n\n",
3727                     "|", "+-> ",
3728                     "DISPATCHED",       EQKSVAL(eq, eqk_dispatched),
3729                     "DROPPED",          EQKSVAL(eq, eqk_dropped),
3730                     "LOGGED",           EQKSVAL(eq, eqk_logged),
3731                     "RESERVED",         EQKSVAL(eq, eqk_reserved),
3732                     "RESERVE FAIL",     EQKSVAL(eq, eqk_reserve_fail),
3733                     "COMMITTED",        EQKSVAL(eq, eqk_committed),
3734                     "COMMIT FAIL",      EQKSVAL(eq, eqk_commit_fail),
3735                     "CANCELLED",        EQKSVAL(eq, eqk_cancelled));
3736         }
3737 
3738         return (DCMD_OK);
3739 }
3740 
3741 /*ARGSUSED*/
3742 static int
3743 panicinfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3744 {
3745         cpu_t panic_cpu;
3746         kthread_t *panic_thread;
3747         void *buf;
3748         panic_data_t *pd;
3749         int i, n;
3750 
3751         if (!mdb_prop_postmortem) {
3752                 mdb_warn("panicinfo can only be run on a system "
3753                     "dump; see dumpadm(1M)\n");
3754                 return (DCMD_ERR);
3755         }
3756 
3757         if (flags & DCMD_ADDRSPEC || argc != 0)
3758                 return (DCMD_USAGE);
3759 
3760         if (mdb_readsym(&panic_cpu, sizeof (cpu_t), "panic_cpu") == -1)
3761                 mdb_warn("failed to read 'panic_cpu'");
3762         else
3763                 mdb_printf("%16s %?d\n", "cpu", panic_cpu.cpu_id);
3764 
3765         if (mdb_readvar(&panic_thread, "panic_thread") == -1)
3766                 mdb_warn("failed to read 'panic_thread'");
3767         else
3768                 mdb_printf("%16s %?p\n", "thread", panic_thread);
3769 
3770         buf = mdb_alloc(PANICBUFSIZE, UM_SLEEP);
3771         pd = (panic_data_t *)buf;
3772 
3773         if (mdb_readsym(buf, PANICBUFSIZE, "panicbuf") == -1 ||
3774             pd->pd_version != PANICBUFVERS) {
3775                 mdb_warn("failed to read 'panicbuf'");
3776                 mdb_free(buf, PANICBUFSIZE);
3777                 return (DCMD_ERR);
3778         }
3779 
3780         mdb_printf("%16s %s\n", "message",  (char *)buf + pd->pd_msgoff);
3781 
3782         n = (pd->pd_msgoff - (sizeof (panic_data_t) -
3783             sizeof (panic_nv_t))) / sizeof (panic_nv_t);
3784 
3785         for (i = 0; i < n; i++)
3786                 mdb_printf("%16s %?llx\n",
3787                     pd->pd_nvdata[i].pnv_name, pd->pd_nvdata[i].pnv_value);
3788 
3789         mdb_free(buf, PANICBUFSIZE);
3790         return (DCMD_OK);
3791 }
3792 
3793 /*
3794  * ::time dcmd, which will print a hires timestamp of when we entered the
3795  * debugger, or the lbolt value if used with the -l option.
3796  *
3797  */
3798 /*ARGSUSED*/
3799 static int
3800 time(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3801 {
3802         uint_t opt_dec = FALSE;
3803         uint_t opt_lbolt = FALSE;
3804         uint_t opt_hex = FALSE;
3805         const char *fmt;
3806         hrtime_t result;
3807 
3808         if (mdb_getopts(argc, argv,
3809             'd', MDB_OPT_SETBITS, TRUE, &opt_dec,
3810             'l', MDB_OPT_SETBITS, TRUE, &opt_lbolt,
3811             'x', MDB_OPT_SETBITS, TRUE, &opt_hex,
3812             NULL) != argc)
3813                 return (DCMD_USAGE);
3814 
3815         if (opt_dec && opt_hex)
3816                 return (DCMD_USAGE);
3817 
3818         result = opt_lbolt ? mdb_get_lbolt() : mdb_gethrtime();
3819         fmt =
3820             opt_hex ? "0x%llx\n" :
3821             opt_dec ? "0t%lld\n" : "%#llr\n";
3822 
3823         mdb_printf(fmt, result);
3824         return (DCMD_OK);
3825 }
3826 
3827 void
3828 time_help(void)
3829 {
3830         mdb_printf("Prints the system time in nanoseconds.\n\n"
3831             "::time will return the timestamp at which we dropped into, \n"
3832             "if called from, kmdb(1); the core dump's high resolution \n"
3833             "time if inspecting one; or the running hires time if we're \n"
3834             "looking at a live system.\n\n"
3835             "Switches:\n"
3836             "  -d   report times in decimal\n"
3837             "  -l   prints the number of clock ticks since system boot\n"
3838             "  -x   report times in hexadecimal\n");
3839 }
3840 
3841 static const mdb_dcmd_t dcmds[] = {
3842 
3843         /* from genunix.c */
3844         { "as2proc", ":", "convert as to proc_t address", as2proc },
3845         { "binding_hash_entry", ":", "print driver names hash table entry",
3846                 binding_hash_entry },
3847         { "callout", "?[-r|n] [-s|l] [-xhB] [-t | -ab nsec [-dkD]]"
3848             " [-C addr | -S seqid] [-f name|addr] [-p name| addr] [-T|L [-E]]"
3849             " [-FivVA]",
3850             "display callouts", callout, callout_help },
3851         { "calloutid", "[-d|v] xid", "print callout by extended id",
3852             calloutid, calloutid_help },
3853         { "class", NULL, "print process scheduler classes", class },
3854         { "cpuinfo", "?[-v]", "print CPUs and runnable threads", cpuinfo },
3855         { "did2thread", "? kt_did", "find kernel thread for this id",
3856                 did2thread },
3857         { "errorq", "?[-v]", "display kernel error queues", errorq },
3858         { "fd", ":[fd num]", "get a file pointer from an fd", fd },
3859         { "flipone", ":", "the vik_rev_level 2 special", flipone },
3860         { "lminfo", NULL, "print lock manager information", lminfo },
3861         { "ndi_event_hdl", "?", "print ndi_event_hdl", ndi_event_hdl },
3862         { "panicinfo", NULL, "print panic information", panicinfo },
3863         { "pid2proc", "?", "convert PID to proc_t address", pid2proc },
3864         { "project", NULL, "display kernel project(s)", project },
3865         { "ps", "[-fltzTP]", "list processes (and associated thr,lwp)", ps },
3866         { "pgrep", "[-x] [-n | -o] pattern",
3867                 "pattern match against all processes", pgrep },
3868         { "ptree", NULL, "print process tree", ptree },
3869         { "sysevent", "?[-sv]", "print sysevent pending or sent queue",
3870                 sysevent},
3871         { "sysevent_channel", "?", "print sysevent channel database",
3872                 sysevent_channel},
3873         { "sysevent_class_list", ":", "print sysevent class list",
3874                 sysevent_class_list},
3875         { "sysevent_subclass_list", ":",
3876                 "print sysevent subclass list", sysevent_subclass_list},
3877         { "system", NULL, "print contents of /etc/system file", sysfile },
3878         { "task", NULL, "display kernel task(s)", task },
3879         { "time", "[-dlx]", "display system time", time, time_help },
3880         { "vnode2path", ":[-F]", "vnode address to pathname", vnode2path },
3881         { "whereopen", ":", "given a vnode, dumps procs which have it open",
3882             whereopen },
3883 
3884         /* from bio.c */
3885         { "bufpagefind", ":addr", "find page_t on buf_t list", bufpagefind },
3886 
3887         /* from bitset.c */
3888         { "bitset", ":", "display a bitset", bitset, bitset_help },
3889 
3890         /* from contract.c */
3891         { "contract", "?", "display a contract", cmd_contract },
3892         { "ctevent", ":", "display a contract event", cmd_ctevent },
3893         { "ctid", ":", "convert id to a contract pointer", cmd_ctid },
3894 
3895         /* from cpupart.c */
3896         { "cpupart", "?[-v]", "print cpu partition info", cpupart },
3897 
3898         /* from cred.c */
3899         { "cred", ":[-v]", "display a credential", cmd_cred },
3900         { "credgrp", ":[-v]", "display cred_t groups", cmd_credgrp },
3901         { "credsid", ":[-v]", "display a credsid_t", cmd_credsid },
3902         { "ksidlist", ":[-v]", "display a ksidlist_t", cmd_ksidlist },
3903 
3904         /* from cyclic.c */
3905         { "cyccover", NULL, "dump cyclic coverage information", cyccover },
3906         { "cycid", "?", "dump a cyclic id", cycid },
3907         { "cycinfo", "?", "dump cyc_cpu info", cycinfo },
3908         { "cyclic", ":", "developer information", cyclic },
3909         { "cyctrace", "?", "dump cyclic trace buffer", cyctrace },
3910 
3911         /* from damap.c */
3912         { "damap", ":", "display a damap_t", damap, damap_help },
3913 
3914         /* from devinfo.c */
3915         { "devbindings", "?[-qs] [device-name | major-num]",
3916             "print devinfo nodes bound to device-name or major-num",
3917             devbindings, devinfo_help },
3918         { "devinfo", ":[-qs]", "detailed devinfo of one node", devinfo,
3919             devinfo_help },
3920         { "devinfo_audit", ":[-v]", "devinfo configuration audit record",
3921             devinfo_audit },
3922         { "devinfo_audit_log", "?[-v]", "system wide devinfo configuration log",
3923             devinfo_audit_log },
3924         { "devinfo_audit_node", ":[-v]", "devinfo node configuration history",
3925             devinfo_audit_node },
3926         { "devinfo2driver", ":", "find driver name for this devinfo node",
3927             devinfo2driver },
3928         { "devnames", "?[-vm] [num]", "print devnames array", devnames },
3929         { "dev2major", "?<dev_t>", "convert dev_t to a major number",
3930             dev2major },
3931         { "dev2minor", "?<dev_t>", "convert dev_t to a minor number",
3932             dev2minor },
3933         { "devt", "?<dev_t>", "display a dev_t's major and minor numbers",
3934             devt },
3935         { "major2name", "?<major-num>", "convert major number to dev name",
3936             major2name },
3937         { "minornodes", ":", "given a devinfo node, print its minor nodes",
3938             minornodes },
3939         { "modctl2devinfo", ":", "given a modctl, list its devinfos",
3940             modctl2devinfo },
3941         { "name2major", "<dev-name>", "convert dev name to major number",
3942             name2major },
3943         { "prtconf", "?[-vpc]", "print devinfo tree", prtconf, prtconf_help },
3944         { "softstate", ":<instance>", "retrieve soft-state pointer",
3945             softstate },
3946         { "devinfo_fm", ":", "devinfo fault managment configuration",
3947             devinfo_fm },
3948         { "devinfo_fmce", ":", "devinfo fault managment cache entry",
3949             devinfo_fmce},
3950 
3951         /* from findstack.c */
3952         { "findstack", ":[-v]", "find kernel thread stack", findstack },
3953         { "findstack_debug", NULL, "toggle findstack debugging",
3954                 findstack_debug },
3955         { "stacks", "?[-afiv] [-c func] [-C func] [-m module] [-M module] "
3956                 "[-s sobj | -S sobj] [-t tstate | -T tstate]",
3957                 "print unique kernel thread stacks",
3958                 stacks, stacks_help },
3959 
3960         /* from fm.c */
3961         { "ereport", "[-v]", "print ereports logged in dump",
3962             ereport },
3963 
3964         /* from group.c */
3965         { "group", "?[-q]", "display a group", group},
3966 
3967         /* from hotplug.c */
3968         { "hotplug", "?[-p]", "display a registered hotplug attachment",
3969             hotplug, hotplug_help },
3970 
3971         /* from irm.c */
3972         { "irmpools", NULL, "display interrupt pools", irmpools_dcmd },
3973         { "irmreqs", NULL, "display interrupt requests in an interrupt pool",
3974             irmreqs_dcmd },
3975         { "irmreq", NULL, "display an interrupt request", irmreq_dcmd },
3976 
3977         /* from kgrep.c + genunix.c */
3978         { "kgrep", KGREP_USAGE, "search kernel as for a pointer", kgrep,
3979                 kgrep_help },
3980 
3981         /* from kmem.c */
3982         { "allocdby", ":", "given a thread, print its allocated buffers",
3983                 allocdby },
3984         { "bufctl", ":[-vh] [-a addr] [-c caller] [-e earliest] [-l latest] "
3985                 "[-t thd]", "print or filter a bufctl", bufctl, bufctl_help },
3986         { "freedby", ":", "given a thread, print its freed buffers", freedby },
3987         { "kmalog", "?[ fail | slab ]",
3988             "display kmem transaction log and stack traces", kmalog },
3989         { "kmastat", "[-kmg]", "kernel memory allocator stats",
3990             kmastat },
3991         { "kmausers", "?[-ef] [cache ...]", "current medium and large users "
3992                 "of the kmem allocator", kmausers, kmausers_help },
3993         { "kmem_cache", "?[-n name]",
3994                 "print kernel memory caches", kmem_cache, kmem_cache_help},
3995         { "kmem_slabs", "?[-v] [-n cache] [-N cache] [-b maxbins] "
3996                 "[-B minbinsize]", "display slab usage per kmem cache",
3997                 kmem_slabs, kmem_slabs_help },
3998         { "kmem_debug", NULL, "toggle kmem dcmd/walk debugging", kmem_debug },
3999         { "kmem_log", "?[-b]", "dump kmem transaction log", kmem_log },
4000         { "kmem_verify", "?", "check integrity of kmem-managed memory",
4001                 kmem_verify },
4002         { "vmem", "?", "print a vmem_t", vmem },
4003         { "vmem_seg", ":[-sv] [-c caller] [-e earliest] [-l latest] "
4004                 "[-m minsize] [-M maxsize] [-t thread] [-T type]",
4005                 "print or filter a vmem_seg", vmem_seg, vmem_seg_help },
4006         { "whatthread", ":[-v]", "print threads whose stack contains the "
4007                 "given address", whatthread },
4008 
4009         /* from ldi.c */
4010         { "ldi_handle", "?[-i]", "display a layered driver handle",
4011             ldi_handle, ldi_handle_help },
4012         { "ldi_ident", NULL, "display a layered driver identifier",
4013             ldi_ident, ldi_ident_help },
4014 
4015         /* from leaky.c + leaky_subr.c */
4016         { "findleaks", FINDLEAKS_USAGE,
4017             "search for potential kernel memory leaks", findleaks,
4018             findleaks_help },
4019 
4020         /* from lgrp.c */
4021         { "lgrp", "?[-q] [-p | -Pih]", "display an lgrp", lgrp},
4022         { "lgrp_set", "", "display bitmask of lgroups as a list", lgrp_set},
4023 
4024         /* from log.c */
4025         { "msgbuf", "?[-v]", "print most recent console messages", msgbuf },
4026 
4027         /* from mdi.c */
4028         { "mdipi", NULL, "given a path, dump mdi_pathinfo "
4029                 "and detailed pi_prop list", mdipi },
4030         { "mdiprops", NULL, "given a pi_prop, dump the pi_prop list",
4031                 mdiprops },
4032         { "mdiphci", NULL, "given a phci, dump mdi_phci and "
4033                 "list all paths", mdiphci },
4034         { "mdivhci", NULL, "given a vhci, dump mdi_vhci and list "
4035                 "all phcis", mdivhci },
4036         { "mdiclient_paths", NULL, "given a path, walk mdi_pathinfo "
4037                 "client links", mdiclient_paths },
4038         { "mdiphci_paths", NULL, "given a path, walk through mdi_pathinfo "
4039                 "phci links", mdiphci_paths },
4040         { "mdiphcis", NULL, "given a phci, walk through mdi_phci ph_next links",
4041                 mdiphcis },
4042 
4043         /* from memory.c */
4044         { "addr2smap", ":[offset]", "translate address to smap", addr2smap },
4045         { "memlist", "?[-iav]", "display a struct memlist", memlist },
4046         { "memstat", NULL, "display memory usage summary", memstat },
4047         { "page", "?", "display a summarized page_t", page },
4048         { "pagelookup", "?[-v vp] [-o offset]",
4049                 "find the page_t with the name {vp, offset}",
4050                 pagelookup, pagelookup_help },
4051         { "page_num2pp", ":", "find the page_t for a given page frame number",
4052                 page_num2pp },
4053         { "pmap", ":[-q]", "print process memory map", pmap },
4054         { "seg", ":", "print address space segment", seg },
4055         { "swapinfo", "?", "display a struct swapinfo", swapinfof },
4056         { "vnode2smap", ":[offset]", "translate vnode to smap", vnode2smap },
4057 
4058         /* from mmd.c */
4059         { "multidata", ":[-sv]", "display a summarized multidata_t",
4060                 multidata },
4061         { "pattbl", ":", "display a summarized multidata attribute table",
4062                 pattbl },
4063         { "pattr2multidata", ":", "print multidata pointer from pattr_t",
4064                 pattr2multidata },
4065         { "pdesc2slab", ":", "print pdesc slab pointer from pdesc_t",
4066                 pdesc2slab },
4067         { "pdesc_verify", ":", "verify integrity of a pdesc_t", pdesc_verify },
4068         { "slab2multidata", ":", "print multidata pointer from pdesc_slab_t",
4069                 slab2multidata },
4070 
4071         /* from modhash.c */
4072         { "modhash", "?[-ceht] [-k key] [-v val] [-i index]",
4073                 "display information about one or all mod_hash structures",
4074                 modhash, modhash_help },
4075         { "modent", ":[-k | -v | -t type]",
4076                 "display information about a mod_hash_entry", modent,
4077                 modent_help },
4078 
4079         /* from net.c */
4080         { "dladm", "?<sub-command> [flags]", "show data link information",
4081                 dladm, dladm_help },
4082         { "mi", ":[-p] [-d | -m]", "filter and display MI object or payload",
4083                 mi },
4084         { "netstat", "[-arv] [-f inet | inet6 | unix] [-P tcp | udp | icmp]",
4085                 "show network statistics", netstat },
4086         { "sonode", "?[-f inet | inet6 | unix | #] "
4087                 "[-t stream | dgram | raw | #] [-p #]",
4088                 "filter and display sonode", sonode },
4089 
4090         /* from netstack.c */
4091         { "netstack", "", "show stack instances", netstack },
4092 
4093         /* from nvpair.c */
4094         { NVPAIR_DCMD_NAME, NVPAIR_DCMD_USAGE, NVPAIR_DCMD_DESCR,
4095                 nvpair_print },
4096         { NVLIST_DCMD_NAME, NVLIST_DCMD_USAGE, NVLIST_DCMD_DESCR,
4097                 print_nvlist },
4098 
4099         /* from pg.c */
4100         { "pg", "?[-q]", "display a pg", pg},
4101 
4102         /* from rctl.c */
4103         { "rctl_dict", "?", "print systemwide default rctl definitions",
4104                 rctl_dict },
4105         { "rctl_list", ":[handle]", "print rctls for the given proc",
4106                 rctl_list },
4107         { "rctl", ":[handle]", "print a rctl_t, only if it matches the handle",
4108                 rctl },
4109         { "rctl_validate", ":[-v] [-n #]", "test resource control value "
4110                 "sequence", rctl_validate },
4111 
4112         /* from sobj.c */
4113         { "rwlock", ":", "dump out a readers/writer lock", rwlock },
4114         { "mutex", ":[-f]", "dump out an adaptive or spin mutex", mutex,
4115                 mutex_help },
4116         { "sobj2ts", ":", "perform turnstile lookup on synch object", sobj2ts },
4117         { "wchaninfo", "?[-v]", "dump condition variable", wchaninfo },
4118         { "turnstile", "?", "display a turnstile", turnstile },
4119 
4120         /* from stream.c */
4121         { "mblk", ":[-q|v] [-f|F flag] [-t|T type] [-l|L|B len] [-d dbaddr]",
4122                 "print an mblk", mblk_prt, mblk_help },
4123         { "mblk_verify", "?", "verify integrity of an mblk", mblk_verify },
4124         { "mblk2dblk", ":", "convert mblk_t address to dblk_t address",
4125                 mblk2dblk },
4126         { "q2otherq", ":", "print peer queue for a given queue", q2otherq },
4127         { "q2rdq", ":", "print read queue for a given queue", q2rdq },
4128         { "q2syncq", ":", "print syncq for a given queue", q2syncq },
4129         { "q2stream", ":", "print stream pointer for a given queue", q2stream },
4130         { "q2wrq", ":", "print write queue for a given queue", q2wrq },
4131         { "queue", ":[-q|v] [-m mod] [-f flag] [-F flag] [-s syncq_addr]",
4132                 "filter and display STREAM queue", queue, queue_help },
4133         { "stdata", ":[-q|v] [-f flag] [-F flag]",
4134                 "filter and display STREAM head", stdata, stdata_help },
4135         { "str2mate", ":", "print mate of this stream", str2mate },
4136         { "str2wrq", ":", "print write queue of this stream", str2wrq },
4137         { "stream", ":", "display STREAM", stream },
4138         { "strftevent", ":", "print STREAMS flow trace event", strftevent },
4139         { "syncq", ":[-q|v] [-f flag] [-F flag] [-t type] [-T type]",
4140                 "filter and display STREAM sync queue", syncq, syncq_help },
4141         { "syncq2q", ":", "print queue for a given syncq", syncq2q },
4142 
4143         /* from taskq.c */
4144         { "taskq", ":[-atT] [-m min_maxq] [-n name]",
4145             "display a taskq", taskq, taskq_help },
4146         { "taskq_entry", ":", "display a taskq_ent_t", taskq_ent },
4147 
4148         /* from thread.c */
4149         { "thread", "?[-bdfimps]", "display a summarized kthread_t", thread,
4150                 thread_help },
4151         { "threadlist", "?[-t] [-v [count]]",
4152                 "display threads and associated C stack traces", threadlist,
4153                 threadlist_help },
4154         { "stackinfo", "?[-h|-a]", "display kthread_t stack usage", stackinfo,
4155                 stackinfo_help },
4156 
4157         /* from tsd.c */
4158         { "tsd", ":-k key", "print tsd[key-1] for this thread", ttotsd },
4159         { "tsdtot", ":", "find thread with this tsd", tsdtot },
4160 
4161         /*
4162          * typegraph does not work under kmdb, as it requires too much memory
4163          * for its internal data structures.
4164          */
4165 #ifndef _KMDB
4166         /* from typegraph.c */
4167         { "findlocks", ":", "find locks held by specified thread", findlocks },
4168         { "findfalse", "?[-v]", "find potentially falsely shared structures",
4169                 findfalse },
4170         { "typegraph", NULL, "build type graph", typegraph },
4171         { "istype", ":type", "manually set object type", istype },
4172         { "notype", ":", "manually clear object type", notype },
4173         { "whattype", ":", "determine object type", whattype },
4174 #endif
4175 
4176         /* from vfs.c */
4177         { "fsinfo", "?[-v]", "print mounted filesystems", fsinfo },
4178         { "pfiles", ":[-fp]", "print process file information", pfiles,
4179                 pfiles_help },
4180 
4181         /* from zone.c */
4182         { "zone", "?[-r [-v]]", "display kernel zone(s)", zoneprt },
4183         { "zsd", ":[-v] [zsd_key]", "display zone-specific-data entries for "
4184             "selected zones", zsd },
4185 
4186         { NULL }
4187 };
4188 
4189 static const mdb_walker_t walkers[] = {
4190 
4191         /* from genunix.c */
4192         { "callouts_bytime", "walk callouts by list chain (expiration time)",
4193                 callout_walk_init, callout_walk_step, callout_walk_fini,
4194                 (void *)CALLOUT_WALK_BYLIST },
4195         { "callouts_byid", "walk callouts by id hash chain",
4196                 callout_walk_init, callout_walk_step, callout_walk_fini,
4197                 (void *)CALLOUT_WALK_BYID },
4198         { "callout_list", "walk a callout list", callout_list_walk_init,
4199                 callout_list_walk_step, callout_list_walk_fini },
4200         { "callout_table", "walk callout table array", callout_table_walk_init,
4201                 callout_table_walk_step, callout_table_walk_fini },
4202         { "cpu", "walk cpu structures", cpu_walk_init, cpu_walk_step },
4203         { "ereportq_dump", "walk list of ereports in dump error queue",
4204                 ereportq_dump_walk_init, ereportq_dump_walk_step, NULL },
4205         { "ereportq_pend", "walk list of ereports in pending error queue",
4206                 ereportq_pend_walk_init, ereportq_pend_walk_step, NULL },
4207         { "errorq", "walk list of system error queues",
4208                 errorq_walk_init, errorq_walk_step, NULL },
4209         { "errorq_data", "walk pending error queue data buffers",
4210                 eqd_walk_init, eqd_walk_step, eqd_walk_fini },
4211         { "allfile", "given a proc pointer, list all file pointers",
4212                 file_walk_init, allfile_walk_step, file_walk_fini },
4213         { "file", "given a proc pointer, list of open file pointers",
4214                 file_walk_init, file_walk_step, file_walk_fini },
4215         { "lock_descriptor", "walk lock_descriptor_t structures",
4216                 ld_walk_init, ld_walk_step, NULL },
4217         { "lock_graph", "walk lock graph",
4218                 lg_walk_init, lg_walk_step, NULL },
4219         { "port", "given a proc pointer, list of created event ports",
4220                 port_walk_init, port_walk_step, NULL },
4221         { "portev", "given a port pointer, list of events in the queue",
4222                 portev_walk_init, portev_walk_step, portev_walk_fini },
4223         { "proc", "list of active proc_t structures",
4224                 proc_walk_init, proc_walk_step, proc_walk_fini },
4225         { "projects", "walk a list of kernel projects",
4226                 project_walk_init, project_walk_step, NULL },
4227         { "sysevent_pend", "walk sysevent pending queue",
4228                 sysevent_pend_walk_init, sysevent_walk_step,
4229                 sysevent_walk_fini},
4230         { "sysevent_sent", "walk sysevent sent queue", sysevent_sent_walk_init,
4231                 sysevent_walk_step, sysevent_walk_fini},
4232         { "sysevent_channel", "walk sysevent channel subscriptions",
4233                 sysevent_channel_walk_init, sysevent_channel_walk_step,
4234                 sysevent_channel_walk_fini},
4235         { "sysevent_class_list", "walk sysevent subscription's class list",
4236                 sysevent_class_list_walk_init, sysevent_class_list_walk_step,
4237                 sysevent_class_list_walk_fini},
4238         { "sysevent_subclass_list",
4239                 "walk sysevent subscription's subclass list",
4240                 sysevent_subclass_list_walk_init,
4241                 sysevent_subclass_list_walk_step,
4242                 sysevent_subclass_list_walk_fini},
4243         { "task", "given a task pointer, walk its processes",
4244                 task_walk_init, task_walk_step, NULL },
4245 
4246         /* from avl.c */
4247         { AVL_WALK_NAME, AVL_WALK_DESC,
4248                 avl_walk_init, avl_walk_step, avl_walk_fini },
4249 
4250         /* from bio.c */
4251         { "buf", "walk the bio buf hash",
4252                 buf_walk_init, buf_walk_step, buf_walk_fini },
4253 
4254         /* from contract.c */
4255         { "contract", "walk all contracts, or those of the specified type",
4256                 ct_walk_init, generic_walk_step, NULL },
4257         { "ct_event", "walk events on a contract event queue",
4258                 ct_event_walk_init, generic_walk_step, NULL },
4259         { "ct_listener", "walk contract event queue listeners",
4260                 ct_listener_walk_init, generic_walk_step, NULL },
4261 
4262         /* from cpupart.c */
4263         { "cpupart_cpulist", "given an cpupart_t, walk cpus in partition",
4264                 cpupart_cpulist_walk_init, cpupart_cpulist_walk_step,
4265                 NULL },
4266         { "cpupart_walk", "walk the set of cpu partitions",
4267                 cpupart_walk_init, cpupart_walk_step, NULL },
4268 
4269         /* from ctxop.c */
4270         { "ctxop", "walk list of context ops on a thread",
4271                 ctxop_walk_init, ctxop_walk_step, ctxop_walk_fini },
4272 
4273         /* from cyclic.c */
4274         { "cyccpu", "walk per-CPU cyc_cpu structures",
4275                 cyccpu_walk_init, cyccpu_walk_step, NULL },
4276         { "cycomni", "for an omnipresent cyclic, walk cyc_omni_cpu list",
4277                 cycomni_walk_init, cycomni_walk_step, NULL },
4278         { "cyctrace", "walk cyclic trace buffer",
4279                 cyctrace_walk_init, cyctrace_walk_step, cyctrace_walk_fini },
4280 
4281         /* from devinfo.c */
4282         { "binding_hash", "walk all entries in binding hash table",
4283                 binding_hash_walk_init, binding_hash_walk_step, NULL },
4284         { "devinfo", "walk devinfo tree or subtree",
4285                 devinfo_walk_init, devinfo_walk_step, devinfo_walk_fini },
4286         { "devinfo_audit_log", "walk devinfo audit system-wide log",
4287                 devinfo_audit_log_walk_init, devinfo_audit_log_walk_step,
4288                 devinfo_audit_log_walk_fini},
4289         { "devinfo_audit_node", "walk per-devinfo audit history",
4290                 devinfo_audit_node_walk_init, devinfo_audit_node_walk_step,
4291                 devinfo_audit_node_walk_fini},
4292         { "devinfo_children", "walk children of devinfo node",
4293                 devinfo_children_walk_init, devinfo_children_walk_step,
4294                 devinfo_children_walk_fini },
4295         { "devinfo_parents", "walk ancestors of devinfo node",
4296                 devinfo_parents_walk_init, devinfo_parents_walk_step,
4297                 devinfo_parents_walk_fini },
4298         { "devinfo_siblings", "walk siblings of devinfo node",
4299                 devinfo_siblings_walk_init, devinfo_siblings_walk_step, NULL },
4300         { "devi_next", "walk devinfo list",
4301                 NULL, devi_next_walk_step, NULL },
4302         { "devnames", "walk devnames array",
4303                 devnames_walk_init, devnames_walk_step, devnames_walk_fini },
4304         { "minornode", "given a devinfo node, walk minor nodes",
4305                 minornode_walk_init, minornode_walk_step, NULL },
4306         { "softstate",
4307                 "given an i_ddi_soft_state*, list all in-use driver stateps",
4308                 soft_state_walk_init, soft_state_walk_step,
4309                 NULL, NULL },
4310         { "softstate_all",
4311                 "given an i_ddi_soft_state*, list all driver stateps",
4312                 soft_state_walk_init, soft_state_all_walk_step,
4313                 NULL, NULL },
4314         { "devinfo_fmc",
4315                 "walk a fault management handle cache active list",
4316                 devinfo_fmc_walk_init, devinfo_fmc_walk_step, NULL },
4317 
4318         /* from group.c */
4319         { "group", "walk all elements of a group",
4320                 group_walk_init, group_walk_step, NULL },
4321 
4322         /* from irm.c */
4323         { "irmpools", "walk global list of interrupt pools",
4324             irmpools_walk_init, list_walk_step, list_walk_fini },
4325         { "irmreqs", "walk list of interrupt requests in an interrupt pool",
4326             irmreqs_walk_init, list_walk_step, list_walk_fini },
4327 
4328         /* from kmem.c */
4329         { "allocdby", "given a thread, walk its allocated bufctls",
4330                 allocdby_walk_init, allocdby_walk_step, allocdby_walk_fini },
4331         { "bufctl", "walk a kmem cache's bufctls",
4332                 bufctl_walk_init, kmem_walk_step, kmem_walk_fini },
4333         { "bufctl_history", "walk the available history of a bufctl",
4334                 bufctl_history_walk_init, bufctl_history_walk_step,
4335                 bufctl_history_walk_fini },
4336         { "freedby", "given a thread, walk its freed bufctls",
4337                 freedby_walk_init, allocdby_walk_step, allocdby_walk_fini },
4338         { "freectl", "walk a kmem cache's free bufctls",
4339                 freectl_walk_init, kmem_walk_step, kmem_walk_fini },
4340         { "freectl_constructed", "walk a kmem cache's constructed free bufctls",
4341                 freectl_constructed_walk_init, kmem_walk_step, kmem_walk_fini },
4342         { "freemem", "walk a kmem cache's free memory",
4343                 freemem_walk_init, kmem_walk_step, kmem_walk_fini },
4344         { "freemem_constructed", "walk a kmem cache's constructed free memory",
4345                 freemem_constructed_walk_init, kmem_walk_step, kmem_walk_fini },
4346         { "kmem", "walk a kmem cache",
4347                 kmem_walk_init, kmem_walk_step, kmem_walk_fini },
4348         { "kmem_cpu_cache", "given a kmem cache, walk its per-CPU caches",
4349                 kmem_cpu_cache_walk_init, kmem_cpu_cache_walk_step, NULL },
4350         { "kmem_hash", "given a kmem cache, walk its allocated hash table",
4351                 kmem_hash_walk_init, kmem_hash_walk_step, kmem_hash_walk_fini },
4352         { "kmem_log", "walk the kmem transaction log",
4353                 kmem_log_walk_init, kmem_log_walk_step, kmem_log_walk_fini },
4354         { "kmem_slab", "given a kmem cache, walk its slabs",
4355                 kmem_slab_walk_init, combined_walk_step, combined_walk_fini },
4356         { "kmem_slab_partial",
4357             "given a kmem cache, walk its partially allocated slabs (min 1)",
4358                 kmem_slab_walk_partial_init, combined_walk_step,
4359                 combined_walk_fini },
4360         { "vmem", "walk vmem structures in pre-fix, depth-first order",
4361                 vmem_walk_init, vmem_walk_step, vmem_walk_fini },
4362         { "vmem_alloc", "given a vmem_t, walk its allocated vmem_segs",
4363                 vmem_alloc_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4364         { "vmem_free", "given a vmem_t, walk its free vmem_segs",
4365                 vmem_free_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4366         { "vmem_postfix", "walk vmem structures in post-fix, depth-first order",
4367                 vmem_walk_init, vmem_postfix_walk_step, vmem_walk_fini },
4368         { "vmem_seg", "given a vmem_t, walk all of its vmem_segs",
4369                 vmem_seg_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4370         { "vmem_span", "given a vmem_t, walk its spanning vmem_segs",
4371                 vmem_span_walk_init, vmem_seg_walk_step, vmem_seg_walk_fini },
4372 
4373         /* from ldi.c */
4374         { "ldi_handle", "walk the layered driver handle hash",
4375                 ldi_handle_walk_init, ldi_handle_walk_step, NULL },
4376         { "ldi_ident", "walk the layered driver identifier hash",
4377                 ldi_ident_walk_init, ldi_ident_walk_step, NULL },
4378 
4379         /* from leaky.c + leaky_subr.c */
4380         { "leak", "given a leaked bufctl or vmem_seg, find leaks w/ same "
4381             "stack trace",
4382                 leaky_walk_init, leaky_walk_step, leaky_walk_fini },
4383         { "leakbuf", "given a leaked bufctl or vmem_seg, walk buffers for "
4384             "leaks w/ same stack trace",
4385                 leaky_walk_init, leaky_buf_walk_step, leaky_walk_fini },
4386 
4387         /* from lgrp.c */
4388         { "lgrp_cpulist", "walk CPUs in a given lgroup",
4389                 lgrp_cpulist_walk_init, lgrp_cpulist_walk_step, NULL },
4390         { "lgrptbl", "walk lgroup table",
4391                 lgrp_walk_init, lgrp_walk_step, NULL },
4392         { "lgrp_parents", "walk up lgroup lineage from given lgroup",
4393                 lgrp_parents_walk_init, lgrp_parents_walk_step, NULL },
4394         { "lgrp_rsrc_mem", "walk lgroup memory resources of given lgroup",
4395                 lgrp_rsrc_mem_walk_init, lgrp_set_walk_step, NULL },
4396         { "lgrp_rsrc_cpu", "walk lgroup CPU resources of given lgroup",
4397                 lgrp_rsrc_cpu_walk_init, lgrp_set_walk_step, NULL },
4398 
4399         /* from list.c */
4400         { LIST_WALK_NAME, LIST_WALK_DESC,
4401                 list_walk_init, list_walk_step, list_walk_fini },
4402 
4403         /* from mdi.c */
4404         { "mdipi_client_list", "Walker for mdi_pathinfo pi_client_link",
4405                 mdi_pi_client_link_walk_init,
4406                 mdi_pi_client_link_walk_step,
4407                 mdi_pi_client_link_walk_fini },
4408         { "mdipi_phci_list", "Walker for mdi_pathinfo pi_phci_link",
4409                 mdi_pi_phci_link_walk_init,
4410                 mdi_pi_phci_link_walk_step,
4411                 mdi_pi_phci_link_walk_fini },
4412         { "mdiphci_list", "Walker for mdi_phci ph_next link",
4413                 mdi_phci_ph_next_walk_init,
4414                 mdi_phci_ph_next_walk_step,
4415                 mdi_phci_ph_next_walk_fini },
4416 
4417         /* from memory.c */
4418         { "allpages", "walk all pages, including free pages",
4419                 allpages_walk_init, allpages_walk_step, allpages_walk_fini },
4420         { "anon", "given an amp, list allocated anon structures",
4421                 anon_walk_init, anon_walk_step, anon_walk_fini,
4422                 ANON_WALK_ALLOC },
4423         { "anon_all", "given an amp, list contents of all anon slots",
4424                 anon_walk_init, anon_walk_step, anon_walk_fini,
4425                 ANON_WALK_ALL },
4426         { "memlist", "walk specified memlist",
4427                 NULL, memlist_walk_step, NULL },
4428         { "page", "walk all pages, or those from the specified vnode",
4429                 page_walk_init, page_walk_step, page_walk_fini },
4430         { "seg", "given an as, list of segments",
4431                 seg_walk_init, avl_walk_step, avl_walk_fini },
4432         { "segvn_anon",
4433                 "given a struct segvn_data, list allocated anon structures",
4434                 segvn_anon_walk_init, anon_walk_step, anon_walk_fini,
4435                 ANON_WALK_ALLOC },
4436         { "segvn_anon_all",
4437                 "given a struct segvn_data, list contents of all anon slots",
4438                 segvn_anon_walk_init, anon_walk_step, anon_walk_fini,
4439                 ANON_WALK_ALL },
4440         { "segvn_pages",
4441                 "given a struct segvn_data, list resident pages in "
4442                 "offset order",
4443                 segvn_pages_walk_init, segvn_pages_walk_step,
4444                 segvn_pages_walk_fini, SEGVN_PAGES_RESIDENT },
4445         { "segvn_pages_all",
4446                 "for each offset in a struct segvn_data, give page_t pointer "
4447                 "(if resident), or NULL.",
4448                 segvn_pages_walk_init, segvn_pages_walk_step,
4449                 segvn_pages_walk_fini, SEGVN_PAGES_ALL },
4450         { "swapinfo", "walk swapinfo structures",
4451                 swap_walk_init, swap_walk_step, NULL },
4452 
4453         /* from mmd.c */
4454         { "pattr", "walk pattr_t structures", pattr_walk_init,
4455                 mmdq_walk_step, mmdq_walk_fini },
4456         { "pdesc", "walk pdesc_t structures",
4457                 pdesc_walk_init, mmdq_walk_step, mmdq_walk_fini },
4458         { "pdesc_slab", "walk pdesc_slab_t structures",
4459                 pdesc_slab_walk_init, mmdq_walk_step, mmdq_walk_fini },
4460 
4461         /* from modhash.c */
4462         { "modhash", "walk list of mod_hash structures", modhash_walk_init,
4463                 modhash_walk_step, NULL },
4464         { "modent", "walk list of entries in a given mod_hash",
4465                 modent_walk_init, modent_walk_step, modent_walk_fini },
4466         { "modchain", "walk list of entries in a given mod_hash_entry",
4467                 NULL, modchain_walk_step, NULL },
4468 
4469         /* from net.c */
4470         { "icmp", "walk ICMP control structures using MI for all stacks",
4471                 mi_payload_walk_init, mi_payload_walk_step, NULL,
4472                 &mi_icmp_arg },
4473         { "mi", "given a MI_O, walk the MI",
4474                 mi_walk_init, mi_walk_step, mi_walk_fini, NULL },
4475         { "sonode", "given a sonode, walk its children",
4476                 sonode_walk_init, sonode_walk_step, sonode_walk_fini, NULL },
4477         { "icmp_stacks", "walk all the icmp_stack_t",
4478                 icmp_stacks_walk_init, icmp_stacks_walk_step, NULL },
4479         { "tcp_stacks", "walk all the tcp_stack_t",
4480                 tcp_stacks_walk_init, tcp_stacks_walk_step, NULL },
4481         { "udp_stacks", "walk all the udp_stack_t",
4482                 udp_stacks_walk_init, udp_stacks_walk_step, NULL },
4483 
4484         /* from netstack.c */
4485         { "netstack", "walk a list of kernel netstacks",
4486                 netstack_walk_init, netstack_walk_step, NULL },
4487 
4488         /* from nvpair.c */
4489         { NVPAIR_WALKER_NAME, NVPAIR_WALKER_DESCR,
4490                 nvpair_walk_init, nvpair_walk_step, NULL },
4491 
4492         /* from rctl.c */
4493         { "rctl_dict_list", "walk all rctl_dict_entry_t's from rctl_lists",
4494                 rctl_dict_walk_init, rctl_dict_walk_step, NULL },
4495         { "rctl_set", "given a rctl_set, walk all rctls", rctl_set_walk_init,
4496                 rctl_set_walk_step, NULL },
4497         { "rctl_val", "given a rctl_t, walk all rctl_val entries associated",
4498                 rctl_val_walk_init, rctl_val_walk_step },
4499 
4500         /* from sobj.c */
4501         { "blocked", "walk threads blocked on a given sobj",
4502                 blocked_walk_init, blocked_walk_step, NULL },
4503         { "wchan", "given a wchan, list of blocked threads",
4504                 wchan_walk_init, wchan_walk_step, wchan_walk_fini },
4505 
4506         /* from stream.c */
4507         { "b_cont", "walk mblk_t list using b_cont",
4508                 mblk_walk_init, b_cont_step, mblk_walk_fini },
4509         { "b_next", "walk mblk_t list using b_next",
4510                 mblk_walk_init, b_next_step, mblk_walk_fini },
4511         { "qlink", "walk queue_t list using q_link",
4512                 queue_walk_init, queue_link_step, queue_walk_fini },
4513         { "qnext", "walk queue_t list using q_next",
4514                 queue_walk_init, queue_next_step, queue_walk_fini },
4515         { "strftblk", "given a dblk_t, walk STREAMS flow trace event list",
4516                 strftblk_walk_init, strftblk_step, strftblk_walk_fini },
4517         { "readq", "walk read queue side of stdata",
4518                 str_walk_init, strr_walk_step, str_walk_fini },
4519         { "writeq", "walk write queue side of stdata",
4520                 str_walk_init, strw_walk_step, str_walk_fini },
4521 
4522         /* from taskq.c */
4523         { "taskq_thread", "given a taskq_t, list all of its threads",
4524                 taskq_thread_walk_init,
4525                 taskq_thread_walk_step,
4526                 taskq_thread_walk_fini },
4527         { "taskq_entry", "given a taskq_t*, list all taskq_ent_t in the list",
4528                 taskq_ent_walk_init, taskq_ent_walk_step, NULL },
4529 
4530         /* from thread.c */
4531         { "deathrow", "walk threads on both lwp_ and thread_deathrow",
4532                 deathrow_walk_init, deathrow_walk_step, NULL },
4533         { "cpu_dispq", "given a cpu_t, walk threads in dispatcher queues",
4534                 cpu_dispq_walk_init, dispq_walk_step, dispq_walk_fini },
4535         { "cpupart_dispq",
4536                 "given a cpupart_t, walk threads in dispatcher queues",
4537                 cpupart_dispq_walk_init, dispq_walk_step, dispq_walk_fini },
4538         { "lwp_deathrow", "walk lwp_deathrow",
4539                 lwp_deathrow_walk_init, deathrow_walk_step, NULL },
4540         { "thread", "global or per-process kthread_t structures",
4541                 thread_walk_init, thread_walk_step, thread_walk_fini },
4542         { "thread_deathrow", "walk threads on thread_deathrow",
4543                 thread_deathrow_walk_init, deathrow_walk_step, NULL },
4544 
4545         /* from tsd.c */
4546         { "tsd", "walk list of thread-specific data",
4547                 tsd_walk_init, tsd_walk_step, tsd_walk_fini },
4548 
4549         /* from tsol.c */
4550         { "tnrh", "walk remote host cache structures",
4551             tnrh_walk_init, tnrh_walk_step, tnrh_walk_fini },
4552         { "tnrhtp", "walk remote host template structures",
4553             tnrhtp_walk_init, tnrhtp_walk_step, tnrhtp_walk_fini },
4554 
4555         /*
4556          * typegraph does not work under kmdb, as it requires too much memory
4557          * for its internal data structures.
4558          */
4559 #ifndef _KMDB
4560         /* from typegraph.c */
4561         { "typeconflict", "walk buffers with conflicting type inferences",
4562                 typegraph_walk_init, typeconflict_walk_step },
4563         { "typeunknown", "walk buffers with unknown types",
4564                 typegraph_walk_init, typeunknown_walk_step },
4565 #endif
4566 
4567         /* from vfs.c */
4568         { "vfs", "walk file system list",
4569                 vfs_walk_init, vfs_walk_step },
4570 
4571         /* from zone.c */
4572         { "zone", "walk a list of kernel zones",
4573                 zone_walk_init, zone_walk_step, NULL },
4574         { "zsd", "walk list of zsd entries for a zone",
4575                 zsd_walk_init, zsd_walk_step, NULL },
4576 
4577         { NULL }
4578 };
4579 
4580 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers };
4581 
4582 /*ARGSUSED*/
4583 static void
4584 genunix_statechange_cb(void *ignored)
4585 {
4586         /*
4587          * Force ::findleaks and ::stacks to let go any cached state.
4588          */
4589         leaky_cleanup(1);
4590         stacks_cleanup(1);
4591 
4592         kmem_statechange();     /* notify kmem */
4593 }
4594 
4595 const mdb_modinfo_t *
4596 _mdb_init(void)
4597 {
4598         kmem_init();
4599 
4600         (void) mdb_callback_add(MDB_CALLBACK_STCHG,
4601             genunix_statechange_cb, NULL);
4602 
4603         return (&modinfo);
4604 }
4605 
4606 void
4607 _mdb_fini(void)
4608 {
4609         leaky_cleanup(1);
4610         stacks_cleanup(1);
4611 }