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fork_kthread() -> kthread_create(). Set P_NOCLDWAIT on kernel threads,

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which will cause any of their children to be reparented to init(8) (which
is already prepared to wait out orphaned processes).
This commit is contained in:
thorpej 1998-11-11 22:45:32 +00:00
parent a0fac8a7bc
commit 920a1ace5b
1 changed files with 10 additions and 4 deletions
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14
sys/kern/init_main.c
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@ -1,4 +1,4 @@
/* $NetBSD: init_main.c,v 1.135 1998/11/11 06:34:43 thorpej Exp $ */ /* $NetBSD: init_main.c,v 1.136 1998/11/11 22:45:32 thorpej Exp $ */
/* /*
* Copyright (c) 1995 Christopher G. Demetriou. All rights reserved. * Copyright (c) 1995 Christopher G. Demetriou. All rights reserved.
@ -57,6 +57,7 @@
#include <sys/mount.h> #include <sys/mount.h>
#include <sys/map.h> #include <sys/map.h>
#include <sys/proc.h> #include <sys/proc.h>
#include <sys/kthread.h>
#include <sys/resourcevar.h> #include <sys/resourcevar.h>
#include <sys/signalvar.h> #include <sys/signalvar.h>
#include <sys/systm.h> #include <sys/systm.h>
@ -244,7 +245,12 @@ main()
session0.s_sid = p->p_pid; session0.s_sid = p->p_pid;
session0.s_leader = p; session0.s_leader = p;
p->p_flag = P_INMEM | P_SYSTEM; /*
* Set P_NOCLDWAIT so that kernel threads are reparented to
* init(8) when they exit. init(8) can easily wait them out
* for us.
*/
p->p_flag = P_INMEM | P_SYSTEM | P_NOCLDWAIT;
p->p_stat = SRUN; p->p_stat = SRUN;
p->p_nice = NZERO; p->p_nice = NZERO;
p->p_emul = &emul_netbsd; p->p_emul = &emul_netbsd;
@ -418,11 +424,11 @@ main()
cpu_set_kpc(p2, start_init, p2); cpu_set_kpc(p2, start_init, p2);
/* Create process 2, the pageout daemon kernel thread. */ /* Create process 2, the pageout daemon kernel thread. */
if (fork_kthread(start_pagedaemon, NULL, NULL, "pagedaemon")) if (kthread_create(start_pagedaemon, NULL, NULL, "pagedaemon"))
panic("fork pagedaemon"); panic("fork pagedaemon");
/* Create process 3, the process reaper kernel thread. */ /* Create process 3, the process reaper kernel thread. */
if (fork_kthread(start_reaper, NULL, NULL, "reaper")) if (kthread_create(start_reaper, NULL, NULL, "reaper"))
panic("fork reaper"); panic("fork reaper");
/* The scheduler is an infinite loop. */ /* The scheduler is an infinite loop. */