init_main.c revision 96755 
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: head/sys/kern/init_main.c 96755 2002-05-16 21:28:32Z trhodes $
43 */
44
45#include "opt_init_path.h"
46
47#include <sys/param.h>
48#include <sys/kernel.h>
49#include <sys/file.h>
50#include <sys/filedesc.h>
51#include <sys/ktr.h>
52#include <sys/lock.h>
53#include <sys/mount.h>
54#include <sys/mutex.h>
55#include <sys/sysctl.h>
56#include <sys/proc.h>
57#include <sys/resourcevar.h>
58#include <sys/systm.h>
59#include <sys/signalvar.h>
60#include <sys/vnode.h>
61#include <sys/sysent.h>
62#include <sys/reboot.h>
63#include <sys/sx.h>
64#include <sys/sysproto.h>
65#include <sys/vmmeter.h>
66#include <sys/unistd.h>
67#include <sys/malloc.h>
68#include <sys/conf.h>
69
70#include <machine/cpu.h>
71
72#include <vm/vm.h>
73#include <vm/vm_param.h>
74#include <vm/pmap.h>
75#include <vm/vm_map.h>
76#include <sys/user.h>
77#include <sys/copyright.h>
78
79void mi_startup(void);				/* Should be elsewhere */
80
81/* Components of the first process -- never freed. */
82static struct session session0;
83static struct pgrp pgrp0;
84struct	proc proc0;
85struct	thread thread0;
86static struct procsig procsig0;
87static struct filedesc0 filedesc0;
88static struct plimit limit0;
89static struct vmspace vmspace0;
90struct	proc *initproc;
91
92int cmask = CMASK;
93extern int fallback_elf_brand;
94
95struct	vnode *rootvp;
96int	boothowto = 0;		/* initialized so that it can be patched */
97SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, "");
98int	bootverbose;
99SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0, "");
100
101/*
102 * This ensures that there is at least one entry so that the sysinit_set
103 * symbol is not undefined.  A sybsystem ID of SI_SUB_DUMMY is never
104 * executed.
105 */
106SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL)
107
108/*
109 * The sysinit table itself.  Items are checked off as the are run.
110 * If we want to register new sysinit types, add them to newsysinit.
111 */
112SET_DECLARE(sysinit_set, struct sysinit);
113struct sysinit **sysinit, **sysinit_end;
114struct sysinit **newsysinit, **newsysinit_end;
115
116/*
117 * Merge a new sysinit set into the current set, reallocating it if
118 * necessary.  This can only be called after malloc is running.
119 */
120void
121sysinit_add(struct sysinit **set, struct sysinit **set_end)
122{
123	struct sysinit **newset;
124	struct sysinit **sipp;
125	struct sysinit **xipp;
126	int count;
127
128	count = set_end - set;
129	if (newsysinit)
130		count += newsysinit_end - newsysinit;
131	else
132		count += sysinit_end - sysinit;
133	newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT);
134	if (newset == NULL)
135		panic("cannot malloc for sysinit");
136	xipp = newset;
137	if (newsysinit)
138		for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
139			*xipp++ = *sipp;
140	else
141		for (sipp = sysinit; sipp < sysinit_end; sipp++)
142			*xipp++ = *sipp;
143	for (sipp = set; sipp < set_end; sipp++)
144		*xipp++ = *sipp;
145	if (newsysinit)
146		free(newsysinit, M_TEMP);
147	newsysinit = newset;
148	newsysinit_end = newset + count;
149}
150
151/*
152 * System startup; initialize the world, create process 0, mount root
153 * filesystem, and fork to create init and pagedaemon.  Most of the
154 * hard work is done in the lower-level initialization routines including
155 * startup(), which does memory initialization and autoconfiguration.
156 *
157 * This allows simple addition of new kernel subsystems that require
158 * boot time initialization.  It also allows substitution of subsystem
159 * (for instance, a scheduler, kernel profiler, or VM system) by object
160 * module.  Finally, it allows for optional "kernel threads".
161 */
162void
163mi_startup(void)
164{
165
166	register struct sysinit **sipp;		/* system initialization*/
167	register struct sysinit **xipp;		/* interior loop of sort*/
168	register struct sysinit *save;		/* bubble*/
169
170	if (sysinit == NULL) {
171		sysinit = SET_BEGIN(sysinit_set);
172		sysinit_end = SET_LIMIT(sysinit_set);
173	}
174
175restart:
176	/*
177	 * Perform a bubble sort of the system initialization objects by
178	 * their subsystem (primary key) and order (secondary key).
179	 */
180	for (sipp = sysinit; sipp < sysinit_end; sipp++) {
181		for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
182			if ((*sipp)->subsystem < (*xipp)->subsystem ||
183			     ((*sipp)->subsystem == (*xipp)->subsystem &&
184			      (*sipp)->order <= (*xipp)->order))
185				continue;	/* skip*/
186			save = *sipp;
187			*sipp = *xipp;
188			*xipp = save;
189		}
190	}
191
192	/*
193	 * Traverse the (now) ordered list of system initialization tasks.
194	 * Perform each task, and continue on to the next task.
195	 *
196	 * The last item on the list is expected to be the scheduler,
197	 * which will not return.
198	 */
199	for (sipp = sysinit; sipp < sysinit_end; sipp++) {
200
201		if ((*sipp)->subsystem == SI_SUB_DUMMY)
202			continue;	/* skip dummy task(s)*/
203
204		if ((*sipp)->subsystem == SI_SUB_DONE)
205			continue;
206
207		/* Call function */
208		(*((*sipp)->func))((*sipp)->udata);
209
210		/* Check off the one we're just done */
211		(*sipp)->subsystem = SI_SUB_DONE;
212
213		/* Check if we've installed more sysinit items via KLD */
214		if (newsysinit != NULL) {
215			if (sysinit != SET_BEGIN(sysinit_set))
216				free(sysinit, M_TEMP);
217			sysinit = newsysinit;
218			sysinit_end = newsysinit_end;
219			newsysinit = NULL;
220			newsysinit_end = NULL;
221			goto restart;
222		}
223	}
224
225	panic("Shouldn't get here!");
226	/* NOTREACHED*/
227}
228
229
230/*
231 ***************************************************************************
232 ****
233 **** The following SYSINIT's belong elsewhere, but have not yet
234 **** been moved.
235 ****
236 ***************************************************************************
237 */
238static void
239print_caddr_t(void *data __unused)
240{
241	printf("%s", (char *)data);
242}
243SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright)
244SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t, version)
245
246static void
247set_boot_verbose(void *data __unused)
248{
249
250	if (boothowto & RB_VERBOSE)
251		bootverbose++;
252}
253SYSINIT(boot_verbose, SI_SUB_TUNABLES, SI_ORDER_ANY, set_boot_verbose, NULL)
254
255/*
256 ***************************************************************************
257 ****
258 **** The two following SYSINT's are proc0 specific glue code.  I am not
259 **** convinced that they can not be safely combined, but their order of
260 **** operation has been maintained as the same as the original init_main.c
261 **** for right now.
262 ****
263 **** These probably belong in init_proc.c or kern_proc.c, since they
264 **** deal with proc0 (the fork template process).
265 ****
266 ***************************************************************************
267 */
268/* ARGSUSED*/
269static void
270proc0_init(void *dummy __unused)
271{
272	register struct proc		*p;
273	register struct filedesc0	*fdp;
274	register unsigned i;
275	struct thread *td;
276	struct ksegrp *kg;
277	struct kse *ke;
278
279	GIANT_REQUIRED;
280	p = &proc0;
281	td = &thread0;
282
283	/*
284	 * Initialize magic number.
285	 */
286	p->p_magic = P_MAGIC;
287
288	/*
289	 * Initialize thread, process and pgrp structures.
290	 */
291	procinit();
292
293	/*
294	 * Initialize sleep queue hash table
295	 */
296	sleepinit();
297
298	/*
299	 * additional VM structures
300	 */
301	vm_init2();
302
303	/*
304	 * Create process 0 (the swapper).
305	 */
306	LIST_INSERT_HEAD(&allproc, p, p_list);
307	LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
308	mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
309	p->p_pgrp = &pgrp0;
310	LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
311	LIST_INIT(&pgrp0.pg_members);
312	LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
313
314	pgrp0.pg_session = &session0;
315	mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
316	session0.s_count = 1;
317	session0.s_leader = p;
318
319#ifdef __ELF__
320	p->p_sysent = &elf_freebsd_sysvec;
321#else
322	p->p_sysent = &aout_sysvec;
323#endif
324
325	ke = &proc0.p_kse;	/* XXXKSE */
326	kg = &proc0.p_ksegrp;	/* XXXKSE */
327	p->p_flag = P_SYSTEM;
328	p->p_sflag = PS_INMEM;
329	p->p_stat = SRUN;
330	p->p_ksegrp.kg_nice = NZERO;
331 	kg->kg_pri_class = PRI_TIMESHARE;
332 	kg->kg_user_pri = PUSER;
333 	td->td_priority = PVM;
334 	td->td_base_pri = PUSER;
335
336	p->p_peers = 0;
337	p->p_leader = p;
338
339	bcopy("swapper", p->p_comm, sizeof ("swapper"));
340
341	callout_init(&p->p_itcallout, 0);
342	callout_init(&td->td_slpcallout, 1);
343
344	/* Create credentials. */
345	p->p_ucred = crget();
346	p->p_ucred->cr_ngroups = 1;	/* group 0 */
347	p->p_ucred->cr_uidinfo = uifind(0);
348	p->p_ucred->cr_ruidinfo = uifind(0);
349	p->p_ucred->cr_prison = NULL;	/* Don't jail it. */
350	td->td_ucred = crhold(p->p_ucred);
351
352	/* Create procsig. */
353	p->p_procsig = &procsig0;
354	p->p_procsig->ps_refcnt = 1;
355
356	/* Initialize signal state for process 0. */
357	siginit(&proc0);
358
359	/* Create the file descriptor table. */
360	fdp = &filedesc0;
361	p->p_fd = &fdp->fd_fd;
362	mtx_init(&fdp->fd_fd.fd_mtx, FILEDESC_LOCK_DESC, NULL, MTX_DEF);
363	fdp->fd_fd.fd_refcnt = 1;
364	fdp->fd_fd.fd_cmask = cmask;
365	fdp->fd_fd.fd_ofiles = fdp->fd_dfiles;
366	fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags;
367	fdp->fd_fd.fd_nfiles = NDFILE;
368
369	/* Create the limits structures. */
370	p->p_limit = &limit0;
371	for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++)
372		limit0.pl_rlimit[i].rlim_cur =
373		    limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY;
374	limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur =
375	    limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles;
376	limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur =
377	    limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc;
378	i = ptoa(cnt.v_free_count);
379	limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i;
380	limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i;
381	limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3;
382	limit0.p_cpulimit = RLIM_INFINITY;
383	limit0.p_refcnt = 1;
384
385	/* Allocate a prototype map so we have something to fork. */
386	pmap_pinit0(vmspace_pmap(&vmspace0));
387	p->p_vmspace = &vmspace0;
388	vmspace0.vm_refcnt = 1;
389	vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS),
390	    trunc_page(VM_MAXUSER_ADDRESS));
391	vmspace0.vm_map.pmap = vmspace_pmap(&vmspace0);
392
393	/*
394	 * We continue to place resource usage info and signal
395	 * actions in the user struct so they're pageable.
396	 */
397	p->p_stats = &p->p_uarea->u_stats;
398	p->p_sigacts = &p->p_uarea->u_sigacts;
399
400	/*
401	 * Charge root for one process.
402	 */
403	(void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0);
404}
405SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL)
406
407/* ARGSUSED*/
408static void
409proc0_post(void *dummy __unused)
410{
411	struct timespec ts;
412	struct proc *p;
413
414	/*
415	 * Now we can look at the time, having had a chance to verify the
416	 * time from the filesystem.  Pretend that proc0 started now.
417	 */
418	sx_slock(&allproc_lock);
419	LIST_FOREACH(p, &allproc, p_list) {
420		microtime(&p->p_stats->p_start);
421		p->p_runtime.sec = 0;
422		p->p_runtime.frac = 0;
423	}
424	sx_sunlock(&allproc_lock);
425	binuptime(PCPU_PTR(switchtime));
426	PCPU_SET(switchticks, ticks);
427
428	/*
429	 * Give the ``random'' number generator a thump.
430	 */
431	nanotime(&ts);
432	srandom(ts.tv_sec ^ ts.tv_nsec);
433}
434SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL)
435
436/*
437 ***************************************************************************
438 ****
439 **** The following SYSINIT's and glue code should be moved to the
440 **** respective files on a per subsystem basis.
441 ****
442 ***************************************************************************
443 */
444
445
446/*
447 ***************************************************************************
448 ****
449 **** The following code probably belongs in another file, like
450 **** kern/init_init.c.
451 ****
452 ***************************************************************************
453 */
454
455/*
456 * List of paths to try when searching for "init".
457 */
458static char init_path[MAXPATHLEN] =
459#ifdef	INIT_PATH
460    __XSTRING(INIT_PATH);
461#else
462    "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall";
463#endif
464SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0,
465	"Path used to search the init process");
466
467/*
468 * Start the initial user process; try exec'ing each pathname in init_path.
469 * The program is invoked with one argument containing the boot flags.
470 */
471static void
472start_init(void *dummy)
473{
474	vm_offset_t addr;
475	struct execve_args args;
476	int options, error;
477	char *var, *path, *next, *s;
478	char *ucp, **uap, *arg0, *arg1;
479	struct thread *td;
480	struct proc *p;
481	int init_does_devfs = 0;
482
483	mtx_lock(&Giant);
484
485	GIANT_REQUIRED;
486
487	td = curthread;
488	p = td->td_proc;
489
490	vfs_mountroot(NULL);
491
492	/* Get the vnode for '/'.  Set p->p_fd->fd_cdir to reference it. */
493	if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode))
494		panic("cannot find root vnode");
495	FILEDESC_LOCK(p->p_fd);
496	p->p_fd->fd_cdir = rootvnode;
497	VREF(p->p_fd->fd_cdir);
498	p->p_fd->fd_rdir = rootvnode;
499	VREF(p->p_fd->fd_rdir);
500	FILEDESC_UNLOCK(p->p_fd);
501	VOP_UNLOCK(rootvnode, 0, td);
502
503	if (devfs_present) {
504		/*
505		 * For disk based systems, we probably cannot do this yet
506		 * since the fs will be read-only.  But a NFS root
507		 * might be ok.  It is worth a shot.
508		 */
509		error = vn_mkdir("/dev", 0700, UIO_SYSSPACE, td);
510		if (error == EEXIST)
511			error = 0;
512		if (error == 0)
513			error = kernel_vmount(0, "fstype", "devfs",
514			    "fspath", "/dev", NULL);
515		if (error != 0)
516			init_does_devfs = 1;
517	}
518
519	/*
520	 * Need just enough stack to hold the faked-up "execve()" arguments.
521	 */
522	addr = trunc_page(USRSTACK - PAGE_SIZE);
523	if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE,
524			FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0)
525		panic("init: couldn't allocate argument space");
526	p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
527	p->p_vmspace->vm_ssize = 1;
528
529	if ((var = getenv("init_path")) != NULL) {
530		strncpy(init_path, var, sizeof init_path);
531		init_path[sizeof init_path - 1] = 0;
532		freeenv(var);
533	}
534	if ((var = getenv("kern.fallback_elf_brand")) != NULL) {
535		fallback_elf_brand = strtol(var, NULL, 0);
536		freeenv(var);
537	}
538
539	for (path = init_path; *path != '\0'; path = next) {
540		while (*path == ':')
541			path++;
542		if (*path == '\0')
543			break;
544		for (next = path; *next != '\0' && *next != ':'; next++)
545			/* nothing */ ;
546		if (bootverbose)
547			printf("start_init: trying %.*s\n", (int)(next - path),
548			    path);
549
550		/*
551		 * Move out the boot flag argument.
552		 */
553		options = 0;
554		ucp = (char *)USRSTACK;
555		(void)subyte(--ucp, 0);		/* trailing zero */
556		if (boothowto & RB_SINGLE) {
557			(void)subyte(--ucp, 's');
558			options = 1;
559		}
560#ifdef notyet
561                if (boothowto & RB_FASTBOOT) {
562			(void)subyte(--ucp, 'f');
563			options = 1;
564		}
565#endif
566
567#ifdef BOOTCDROM
568		(void)subyte(--ucp, 'C');
569		options = 1;
570#endif
571		if (init_does_devfs) {
572			(void)subyte(--ucp, 'd');
573			options = 1;
574		}
575
576		if (options == 0)
577			(void)subyte(--ucp, '-');
578		(void)subyte(--ucp, '-');		/* leading hyphen */
579		arg1 = ucp;
580
581		/*
582		 * Move out the file name (also arg 0).
583		 */
584		(void)subyte(--ucp, 0);
585		for (s = next - 1; s >= path; s--)
586			(void)subyte(--ucp, *s);
587		arg0 = ucp;
588
589		/*
590		 * Move out the arg pointers.
591		 */
592		uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1));
593		(void)suword((caddr_t)--uap, (long)0);	/* terminator */
594		(void)suword((caddr_t)--uap, (long)(intptr_t)arg1);
595		(void)suword((caddr_t)--uap, (long)(intptr_t)arg0);
596
597		/*
598		 * Point at the arguments.
599		 */
600		args.fname = arg0;
601		args.argv = uap;
602		args.envv = NULL;
603
604		/*
605		 * Now try to exec the program.  If can't for any reason
606		 * other than it doesn't exist, complain.
607		 *
608		 * Otherwise, return via fork_trampoline() all the way
609		 * to user mode as init!
610		 */
611		if ((error = execve(td, &args)) == 0) {
612			mtx_unlock(&Giant);
613			return;
614		}
615		if (error != ENOENT)
616			printf("exec %.*s: error %d\n", (int)(next - path),
617			    path, error);
618	}
619	printf("init: not found in path %s\n", init_path);
620	panic("no init");
621}
622
623/*
624 * Like kthread_create(), but runs in it's own address space.
625 * We do this early to reserve pid 1.
626 *
627 * Note special case - do not make it runnable yet.  Other work
628 * in progress will change this more.
629 */
630static void
631create_init(const void *udata __unused)
632{
633	struct ucred *newcred, *oldcred;
634	int error;
635
636	error = fork1(&thread0, RFFDG | RFPROC | RFSTOPPED, &initproc);
637	if (error)
638		panic("cannot fork init: %d\n", error);
639	/* divorce init's credentials from the kernel's */
640	newcred = crget();
641	PROC_LOCK(initproc);
642	initproc->p_flag |= P_SYSTEM;
643	oldcred = initproc->p_ucred;
644	crcopy(newcred, oldcred);
645	initproc->p_ucred = newcred;
646	PROC_UNLOCK(initproc);
647	crfree(oldcred);
648	mtx_lock_spin(&sched_lock);
649	initproc->p_sflag |= PS_INMEM;
650	mtx_unlock_spin(&sched_lock);
651	cpu_set_fork_handler(FIRST_THREAD_IN_PROC(initproc), start_init, NULL);
652}
653SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL)
654
655/*
656 * Make it runnable now.
657 */
658static void
659kick_init(const void *udata __unused)
660{
661	struct thread *td;
662
663	td = FIRST_THREAD_IN_PROC(initproc);
664	mtx_lock_spin(&sched_lock);
665	initproc->p_stat = SRUN;
666	setrunqueue(FIRST_THREAD_IN_PROC(initproc)); /* XXXKSE */
667	mtx_unlock_spin(&sched_lock);
668}
669SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL)
670