sys/kern/init_main.c

   1 /*
   2  * Copyright (c) 1995 Terrence R. Lambert
   3  * All rights reserved.
   4  *
   5  * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  * (c) UNIX System Laboratories, Inc.
   8  * All or some portions of this file are derived from material licensed
   9  * to the University of California by American Telephone and Telegraph
  10  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  11  * the permission of UNIX System Laboratories, Inc.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  *
  41  *      @(#)init_main.c 8.9 (Berkeley) 1/21/94
  42  * $FreeBSD: src/sys/kern/init_main.c,v 1.134.2.8 2003/06/06 20:21:32 tegge Exp $
  43  * $DragonFly: src/sys/kern/init_main.c,v 1.42 2005/06/06 15:02:27 dillon Exp $
  44  */
  45
  46 #include "opt_init_path.h"
  47
  48 #include <sys/param.h>
  49 #include <sys/file.h>
  50 #include <sys/filedesc.h>
  51 #include <sys/kernel.h>
  52 #include <sys/mount.h>
  53 #include <sys/sysctl.h>
  54 #include <sys/proc.h>
  55 #include <sys/resourcevar.h>
  56 #include <sys/signalvar.h>
  57 #include <sys/systm.h>
  58 #include <sys/vnode.h>
  59 #include <sys/sysent.h>
  60 #include <sys/reboot.h>
  61 #include <sys/sysproto.h>
  62 #include <sys/vmmeter.h>
  63 #include <sys/unistd.h>
  64 #include <sys/malloc.h>
  65 #include <sys/file2.h>
  66 #include <sys/thread2.h>
  67
  68 #include <machine/cpu.h>
  69
  70 #include <vm/vm.h>
  71 #include <vm/vm_param.h>
  72 #include <sys/lock.h>
  73 #include <vm/pmap.h>
  74 #include <vm/vm_map.h>
  75 #include <sys/user.h>
  76 #include <sys/copyright.h>
  77
  78 void mi_startup(void);                          /* Should be elsewhere */
  79
  80 /* Components of the first process -- never freed. */
  81 static struct session session0;
  82 static struct pgrp pgrp0;
  83 static struct procsig procsig0;
  84 static struct filedesc0 filedesc0;
  85 static struct plimit limit0;
  86 static struct vmspace vmspace0;
  87 struct proc *initproc;
  88 struct proc proc0;
  89 struct thread thread0;
  90
  91 int cmask = CMASK;
  92 extern  struct user *proc0paddr;
  93 extern int fallback_elf_brand;
  94
  95 int     boothowto = 0;          /* initialized so that it can be patched */
  96 SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, "");
  97
  98 /*
  99  * This ensures that there is at least one entry so that the sysinit_set
 100  * symbol is not undefined.  A sybsystem ID of SI_SUB_DUMMY is never
 101  * executed.
 102  */
 103 SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL)
 104
 105 /*
 106  * The sysinit table itself.  Items are checked off as the are run.
 107  * If we want to register new sysinit types, add them to newsysinit.
 108  */
 109 SET_DECLARE(sysinit_set, struct sysinit);
 110 struct sysinit **sysinit, **sysinit_end;
 111 struct sysinit **newsysinit, **newsysinit_end;
 112
 113
 114 /*
 115  * Merge a new sysinit set into the current set, reallocating it if
 116  * necessary.  This can only be called after malloc is running.
 117  */
 118 void
 119 sysinit_add(struct sysinit **set, struct sysinit **set_end)
 120 {
 121         struct sysinit **newset;
 122         struct sysinit **sipp;
 123         struct sysinit **xipp;
 124         int count;
 125
 126         count = set_end - set;
 127         if (newsysinit)
 128                 count += newsysinit_end - newsysinit;
 129         else
 130                 count += sysinit_end - sysinit;
 131         newset = malloc(count * sizeof(*sipp), M_TEMP, M_WAITOK);
 132         if (newset == NULL)
 133                 panic("cannot malloc for sysinit");
 134         xipp = newset;
 135         if (newsysinit) {
 136                 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
 137                         *xipp++ = *sipp;
 138         } else {
 139                 for (sipp = sysinit; sipp < sysinit_end; sipp++)
 140                         *xipp++ = *sipp;
 141         }
 142         for (sipp = set; sipp < set_end; sipp++)
 143                 *xipp++ = *sipp;
 144         if (newsysinit)
 145                 free(newsysinit, M_TEMP);
 146         newsysinit = newset;
 147         newsysinit_end = newset + count;
 148 }
 149
 150 /*
 151  * System startup; initialize the world, create process 0, mount root
 152  * filesystem, and fork to create init and pagedaemon.  Most of the
 153  * hard work is done in the lower-level initialization routines including
 154  * startup(), which does memory initialization and autoconfiguration.
 155  *
 156  * This allows simple addition of new kernel subsystems that require
 157  * boot time initialization.  It also allows substitution of subsystem
 158  * (for instance, a scheduler, kernel profiler, or VM system) by object
 159  * module.  Finally, it allows for optional "kernel threads".
 160  */
 161 void
 162 mi_startup(void)
 163 {
 164         struct sysinit *sip;            /* system initialization*/
 165         struct sysinit **sipp;          /* system initialization*/
 166         struct sysinit **xipp;          /* interior loop of sort*/
 167         struct sysinit *save;           /* bubble*/
 168
 169         if (sysinit == NULL) {
 170                 sysinit = SET_BEGIN(sysinit_set);
 171                 sysinit_end = SET_LIMIT(sysinit_set);
 172         }
 173
 174 restart:
 175         /*
 176          * Perform a bubble sort of the system initialization objects by
 177          * their subsystem (primary key) and order (secondary key).
 178          */
 179         for (sipp = sysinit; sipp < sysinit_end; sipp++) {
 180                 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
 181                         if ((*sipp)->subsystem < (*xipp)->subsystem ||
 182                              ((*sipp)->subsystem == (*xipp)->subsystem &&
 183                               (*sipp)->order <= (*xipp)->order))
 184                                 continue;       /* skip*/
 185                         save = *sipp;
 186                         *sipp = *xipp;
 187                         *xipp = save;
 188                 }
 189         }
 190
 191         /*
 192          * Traverse the (now) ordered list of system initialization tasks.
 193          * Perform each task, and continue on to the next task.
 194          *
 195          * The last item on the list is expected to be the scheduler,
 196          * which will not return.
 197          */
 198         for (sipp = sysinit; sipp < sysinit_end; sipp++) {
 199                 sip = *sipp;
 200                 if (sip->subsystem == SI_SUB_DUMMY)
 201                         continue;       /* skip dummy task(s)*/
 202
 203                 if (sip->subsystem == SI_SUB_DONE)
 204                         continue;
 205
 206                 /* Call function */
 207                 (*(sip->func))(sip->udata);
 208
 209                 /* Check off the one we're just done */
 210                 sip->subsystem = SI_SUB_DONE;
 211
 212                 /* Check if we've installed more sysinit items via KLD */
 213                 if (newsysinit != NULL) {
 214                         if (sysinit != SET_BEGIN(sysinit_set))
 215                                 free(sysinit, M_TEMP);
 216                         sysinit = newsysinit;
 217                         sysinit_end = newsysinit_end;
 218                         newsysinit = NULL;
 219                         newsysinit_end = NULL;
 220                         goto restart;
 221                 }
 222         }
 223
 224         panic("Shouldn't get here!");
 225         /* NOTREACHED*/
 226 }
 227
 228
 229 /*
 230  ***************************************************************************
 231  ****
 232  **** The following SYSINIT's belong elsewhere, but have not yet
 233  **** been moved.
 234  ****
 235  ***************************************************************************
 236  */
 237 static void
 238 print_caddr_t(void *data __unused)
 239 {
 240         printf("%s", (char *)data);
 241 }
 242 SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright)
 243
 244 /*
 245  * Leave the critical section that protected us from spurious interrupts
 246  * so device probes work.
 247  */
 248 static void
 249 leavecrit(void *dummy __unused)
 250 {
 251         crit_exit();
 252         KKASSERT(!IN_CRITICAL_SECT(curthread));
 253         if (bootverbose)
 254                 printf("Leaving critical section, allowing interrupts\n");
 255 }
 256 SYSINIT(leavecrit, SI_SUB_LEAVE_CRIT, SI_ORDER_ANY, leavecrit, NULL)
 257
 258 /*
 259  ***************************************************************************
 260  ****
 261  **** The two following SYSINT's are proc0 specific glue code.  I am not
 262  **** convinced that they can not be safely combined, but their order of
 263  **** operation has been maintained as the same as the original init_main.c
 264  **** for right now.
 265  ****
 266  **** These probably belong in init_proc.c or kern_proc.c, since they
 267  **** deal with proc0 (the fork template process).
 268  ****
 269  ***************************************************************************
 270  */
 271 /* ARGSUSED*/
 272 static void
 273 proc0_init(void *dummy __unused)
 274 {
 275         struct proc             *p;
 276         struct filedesc0        *fdp;
 277         unsigned i;
 278
 279         p = &proc0;
 280
 281         /*
 282          * Initialize process and pgrp structures.
 283          */
 284         procinit();
 285
 286         /*
 287          * Initialize sleep queue hash table
 288          */
 289         sleepinit();
 290
 291         /*
 292          * additional VM structures
 293          */
 294         vm_init2();
 295
 296         /*
 297          * Create process 0 (the swapper).
 298          */
 299         LIST_INSERT_HEAD(&allproc, p, p_list);
 300         p->p_pgrp = &pgrp0;
 301         LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
 302         LIST_INIT(&pgrp0.pg_members);
 303         LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
 304
 305         pgrp0.pg_session = &session0;
 306         session0.s_count = 1;
 307         session0.s_leader = p;
 308
 309         p->p_sysent = &aout_sysvec;
 310         TAILQ_INIT(&p->p_sysmsgq);
 311
 312         p->p_flag = P_INMEM | P_SYSTEM;
 313         p->p_stat = SRUN;
 314         p->p_nice = NZERO;
 315         p->p_rtprio.type = RTP_PRIO_NORMAL;
 316         p->p_rtprio.prio = 0;
 317
 318         p->p_peers = 0;
 319         p->p_leader = p;
 320
 321         bcopy("swapper", p->p_comm, sizeof ("swapper"));
 322
 323         /* Create credentials. */
 324         p->p_ucred = crget();
 325         p->p_ucred->cr_ruidinfo = uifind(0);
 326         p->p_ucred->cr_ngroups = 1;     /* group 0 */
 327         p->p_ucred->cr_uidinfo = uifind(0);
 328
 329         /* Don't jail it */
 330         p->p_ucred->cr_prison = NULL;
 331
 332         /* Create procsig. */
 333         p->p_procsig = &procsig0;
 334         p->p_procsig->ps_refcnt = 1;
 335
 336         /* Initialize signal state for process 0. */
 337         siginit(&proc0);
 338
 339         /* Create the file descriptor table. */
 340         fdp = &filedesc0;
 341         p->p_fd = &fdp->fd_fd;
 342         p->p_fdtol = NULL;
 343         fdp->fd_fd.fd_refcnt = 1;
 344         fdp->fd_fd.fd_cmask = cmask;
 345         fdp->fd_fd.fd_ofiles = fdp->fd_dfiles;
 346         fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags;
 347         fdp->fd_fd.fd_nfiles = NDFILE;
 348
 349         /* Create the limits structures. */
 350         p->p_limit = &limit0;
 351         for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
 352                 limit0.pl_rlimit[i].rlim_cur =
 353                     limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
 354         limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur =
 355             limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
 356         limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur =
 357             limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
 358         i = ptoa(vmstats.v_free_count);
 359         limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i;
 360         limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i;
 361         limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3;
 362         limit0.p_cpulimit = RLIM_INFINITY;
 363         limit0.p_refcnt = 1;
 364
 365         /* Allocate a prototype map so we have something to fork. */
 366         pmap_pinit0(vmspace_pmap(&vmspace0));
 367         p->p_vmspace = &vmspace0;
 368         vmspace0.vm_refcnt = 1;
 369         vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS),
 370             trunc_page(VM_MAXUSER_ADDRESS));
 371         vmspace0.vm_map.pmap = vmspace_pmap(&vmspace0);
 372
 373         /*
 374          * We continue to place resource usage info and signal
 375          * actions in the user struct so they're pageable.
 376          */
 377         p->p_stats = &p->p_addr->u_stats;
 378         p->p_sigacts = &p->p_addr->u_sigacts;
 379
 380         /*
 381          * Charge root for one process.
 382          */
 383         (void)chgproccnt(p->p_ucred->cr_uidinfo, 1, 0);
 384
 385 }
 386 SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL)
 387
 388 /* ARGSUSED*/
 389 static void
 390 proc0_post(void *dummy __unused)
 391 {
 392         struct timespec ts;
 393         struct proc *p;
 394
 395         /*
 396          * Now we can look at the time, having had a chance to verify the
 397          * time from the file system.  Pretend that proc0 started now.
 398          */
 399         FOREACH_PROC_IN_SYSTEM(p) {
 400                 microtime(&p->p_thread->td_start);
 401         }
 402
 403         /*
 404          * Give the ``random'' number generator a thump.
 405          * XXX: Does read_random() contain enough bits to be used here ?
 406          */
 407         nanotime(&ts);
 408         srandom(ts.tv_sec ^ ts.tv_nsec);
 409 }
 410 SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL)
 411
 412 /*
 413  ***************************************************************************
 414  ****
 415  **** The following SYSINIT's and glue code should be moved to the
 416  **** respective files on a per subsystem basis.
 417  ****
 418  ***************************************************************************
 419  */
 420
 421
 422 /*
 423  ***************************************************************************
 424  ****
 425  **** The following code probably belongs in another file, like
 426  **** kern/init_init.c.
 427  ****
 428  ***************************************************************************
 429  */
 430
 431 /*
 432  * List of paths to try when searching for "init".
 433  */
 434 static char init_path[MAXPATHLEN] =
 435 #ifdef  INIT_PATH
 436     __XSTRING(INIT_PATH);
 437 #else
 438     "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall";
 439 #endif
 440 SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, "");
 441
 442 /*
 443  * Start the initial user process; try exec'ing each pathname in init_path.
 444  * The program is invoked with one argument containing the boot flags.
 445  *
 446  * The MP lock is held on entry.
 447  */
 448 static void
 449 start_init(void *dummy)
 450 {
 451         vm_offset_t addr;
 452         struct execve_args args;
 453         int options, error;
 454         char *var, *path, *next, *s;
 455         char *ucp, **uap, *arg0, *arg1;
 456         struct proc *p;
 457         struct mount *mp;
 458         struct vnode *vp;
 459
 460         p = curproc;
 461
 462         /* Get the vnode for '/'.  Set p->p_fd->fd_cdir to reference it. */
 463         mp = mountlist_boot_getfirst();
 464         if (VFS_ROOT(mp, &vp))
 465                 panic("cannot find root vnode");
 466         if (mp->mnt_ncp == NULL) {
 467                 mp->mnt_ncp = cache_allocroot(mp, vp);
 468                 cache_unlock(mp->mnt_ncp);      /* leave ref intact */
 469         }
 470         p->p_fd->fd_cdir = vp;
 471         vref(p->p_fd->fd_cdir);
 472         p->p_fd->fd_rdir = vp;
 473         vref(p->p_fd->fd_rdir);
 474         vfs_cache_setroot(vp, cache_hold(mp->mnt_ncp));
 475         VOP_UNLOCK(vp, 0, curthread); /* leave ref intact */
 476         p->p_fd->fd_ncdir = cache_hold(mp->mnt_ncp);
 477         p->p_fd->fd_nrdir = cache_hold(mp->mnt_ncp);
 478
 479         /*
 480          * Need just enough stack to hold the faked-up "execve()" arguments.
 481          */
 482         addr = trunc_page(USRSTACK - PAGE_SIZE);
 483         if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE,
 484                         FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0)
 485                 panic("init: couldn't allocate argument space");
 486         p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
 487         p->p_vmspace->vm_ssize = 1;
 488
 489         if ((var = getenv("init_path")) != NULL) {
 490                 strncpy(init_path, var, sizeof init_path);
 491                 init_path[sizeof init_path - 1] = 0;
 492         }
 493         if ((var = getenv("kern.fallback_elf_brand")) != NULL)
 494                 fallback_elf_brand = strtol(var, NULL, 0);
 495
 496         for (path = init_path; *path != '\0'; path = next) {
 497                 while (*path == ':')
 498                         path++;
 499                 if (*path == '\0')
 500                         break;
 501                 for (next = path; *next != '\0' && *next != ':'; next++)
 502                         /* nothing */ ;
 503                 if (bootverbose)
 504                         printf("start_init: trying %.*s\n", (int)(next - path),
 505                             path);
 506
 507                 /*
 508                  * Move out the boot flag argument.
 509                  */
 510                 options = 0;
 511                 ucp = (char *)USRSTACK;
 512                 (void)subyte(--ucp, 0);         /* trailing zero */
 513                 if (boothowto & RB_SINGLE) {
 514                         (void)subyte(--ucp, 's');
 515                         options = 1;
 516                 }
 517 #ifdef notyet
 518                 if (boothowto & RB_FASTBOOT) {
 519                         (void)subyte(--ucp, 'f');
 520                         options = 1;
 521                 }
 522 #endif
 523
 524 #ifdef BOOTCDROM
 525                 (void)subyte(--ucp, 'C');
 526                 options = 1;
 527 #endif
 528                 if (options == 0)
 529                         (void)subyte(--ucp, '-');
 530                 (void)subyte(--ucp, '-');               /* leading hyphen */
 531                 arg1 = ucp;
 532
 533                 /*
 534                  * Move out the file name (also arg 0).
 535                  */
 536                 (void)subyte(--ucp, 0);
 537                 for (s = next - 1; s >= path; s--)
 538                         (void)subyte(--ucp, *s);
 539                 arg0 = ucp;
 540
 541                 /*
 542                  * Move out the arg pointers.
 543                  */
 544                 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1));
 545                 (void)suword((caddr_t)--uap, (long)0);  /* terminator */
 546                 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1);
 547                 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0);
 548
 549                 /*
 550                  * Point at the arguments.
 551                  */
 552                 args.fname = arg0;
 553                 args.argv = uap;
 554                 args.envv = NULL;
 555
 556                 /*
 557                  * Now try to exec the program.  If can't for any reason
 558                  * other than it doesn't exist, complain.
 559                  *
 560                  * Otherwise, return via fork_trampoline() all the way
 561                  * to user mode as init!
 562                  *
 563                  * WARNING!  We may have been moved to another cpu after
 564                  * acquiring the current user process designation.  The
 565                  * MP lock will migrate with us though so we still have to
 566                  * release it.
 567                  */
 568                 if ((error = execve(&args)) == 0) {
 569                         if (p->p_thread->td_gd->gd_uschedcp != p)
 570                                 acquire_curproc(p);
 571                         rel_mplock();
 572                         return;
 573                 }
 574                 if (error != ENOENT)
 575                         printf("exec %.*s: error %d\n", (int)(next - path),
 576                             path, error);
 577         }
 578         printf("init: not found in path %s\n", init_path);
 579         panic("no init");
 580 }
 581
 582 /*
 583  * Like kthread_create(), but runs in it's own address space.
 584  * We do this early to reserve pid 1.
 585  *
 586  * Note special case - do not make it runnable yet.  Other work
 587  * in progress will change this more.
 588  */
 589 static void
 590 create_init(const void *udata __unused)
 591 {
 592         int error;
 593
 594         crit_enter();
 595         error = fork1(&proc0, RFFDG | RFPROC, &initproc);
 596         if (error)
 597                 panic("cannot fork init: %d", error);
 598         initproc->p_flag |= P_INMEM | P_SYSTEM;
 599         cpu_set_fork_handler(initproc, start_init, NULL);
 600         crit_exit();
 601 }
 602 SYSINIT(init,SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL)
 603
 604 /*
 605  * Make it runnable now.
 606  */
 607 static void
 608 kick_init(const void *udata __unused)
 609 {
 610         start_forked_proc(&proc0, initproc);
 611 }
 612 SYSINIT(kickinit,SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL)
 613
 614 /*
 615  * Machine independant globaldata initialization
 616  *
 617  * WARNING!  Called from early boot, 'mycpu' may not work yet.
 618  */
 619 void
 620 mi_gdinit(struct globaldata *gd, int cpuid)
 621 {
 622         TAILQ_INIT(&gd->gd_tdfreeq);    /* for pmap_{new,dispose}_thread() */
 623         TAILQ_INIT(&gd->gd_systimerq);
 624         gd->gd_cpuid = cpuid;
 625         gd->gd_cpumask = (cpumask_t)1 << cpuid;
 626         lwkt_gdinit(gd);
 627         vm_map_entry_reserve_cpu_init(gd);
 628 }
 629
 630