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freebsd-skq/sys/sys/kthread.h

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Include <sys/cdefs.h> so that this file is self-sufficient. Protect hand-formatted comments from indent(1). Don't bogusly forward- declare `struct proc'. Fixed some other style bugs.
2001-02-15 11:35:55 +00:00
/*-
Slight reorganization of kernel thread/process creation. Instead of using SYSINIT_KT() etc (which is a static, compile-time procedure), use a NetBSD-style kthread_create() interface. kproc_start is still available as a SYSINIT() hook. This allowed simplification of chunks of the sysinit code in the process. This kthread_create() is our old kproc_start internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work the same as the NetBSD one. One thing I'd like to do shortly is get rid of nfsiod as a user initiated process. It makes sense for the nfs client code to create them on the fly as needed up to a user settable limit. This means that nfsiod doesn't need to be in /sbin and is always "available". This is a fair bit easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
* Copyright (c) 1999 Peter Wemm <peter@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_KTHREAD_H_
Include <sys/cdefs.h> so that this file is self-sufficient. Protect hand-formatted comments from indent(1). Don't bogusly forward- declare `struct proc'. Fixed some other style bugs.
2001-02-15 11:35:55 +00:00
#define _SYS_KTHREAD_H_
Slight reorganization of kernel thread/process creation. Instead of using SYSINIT_KT() etc (which is a static, compile-time procedure), use a NetBSD-style kthread_create() interface. kproc_start is still available as a SYSINIT() hook. This allowed simplification of chunks of the sysinit code in the process. This kthread_create() is our old kproc_start internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work the same as the NetBSD one. One thing I'd like to do shortly is get rid of nfsiod as a user initiated process. It makes sense for the nfs client code to create them on the fly as needed up to a user settable limit. This means that nfsiod doesn't need to be in /sbin and is always "available". This is a fair bit easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
Include <sys/cdefs.h> so that this file is self-sufficient. Protect hand-formatted comments from indent(1). Don't bogusly forward- declare `struct proc'. Fixed some other style bugs.
2001-02-15 11:35:55 +00:00
#include <sys/cdefs.h>
Slight reorganization of kernel thread/process creation. Instead of using SYSINIT_KT() etc (which is a static, compile-time procedure), use a NetBSD-style kthread_create() interface. kproc_start is still available as a SYSINIT() hook. This allowed simplification of chunks of the sysinit code in the process. This kthread_create() is our old kproc_start internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work the same as the NetBSD one. One thing I'd like to do shortly is get rid of nfsiod as a user initiated process. It makes sense for the nfs client code to create them on the fly as needed up to a user settable limit. This means that nfsiod doesn't need to be in /sbin and is always "available". This is a fair bit easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
Include <sys/cdefs.h> so that this file is self-sufficient. Protect hand-formatted comments from indent(1). Don't bogusly forward- declare `struct proc'. Fixed some other style bugs.
2001-02-15 11:35:55 +00:00
/*-
* A kernel process descriptor; used to start "internal" daemons.
*
* Note: global_procpp may be NULL for no global save area.
Slight reorganization of kernel thread/process creation. Instead of using SYSINIT_KT() etc (which is a static, compile-time procedure), use a NetBSD-style kthread_create() interface. kproc_start is still available as a SYSINIT() hook. This allowed simplification of chunks of the sysinit code in the process. This kthread_create() is our old kproc_start internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work the same as the NetBSD one. One thing I'd like to do shortly is get rid of nfsiod as a user initiated process. It makes sense for the nfs client code to create them on the fly as needed up to a user settable limit. This means that nfsiod doesn't need to be in /sbin and is always "available". This is a fair bit easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
*/
struct kproc_desc {
char *arg0; /* arg 0 (for 'ps' listing) */
Remove __P
2002-03-19 20:18:42 +00:00
void (*func)(void); /* "main" for kernel process */
Slight reorganization of kernel thread/process creation. Instead of using SYSINIT_KT() etc (which is a static, compile-time procedure), use a NetBSD-style kthread_create() interface. kproc_start is still available as a SYSINIT() hook. This allowed simplification of chunks of the sysinit code in the process. This kthread_create() is our old kproc_start internals, with the SYSINIT_KT fork hooks grafted in and tweaked to work the same as the NetBSD one. One thing I'd like to do shortly is get rid of nfsiod as a user initiated process. It makes sense for the nfs client code to create them on the fly as needed up to a user settable limit. This means that nfsiod doesn't need to be in /sbin and is always "available". This is a fair bit easier to do outside of the SYSINIT_KT() framework.
1999-07-01 13:21:46 +00:00
struct proc **global_procpp; /* ptr to proc ptr save area */
};
Remove __P
2002-03-19 20:18:42 +00:00
void kproc_shutdown(void *, int);
void kproc_start(const void *);
int kthread_create(void (*)(void *), void *, struct proc **,
Some kernel threads try to do significant work, and the default KSTACK_PAGES doesn't give them enough stack to do much before blowing away the pcb. This adds MI and MD code to allow the allocation of an alternate kstack who's size can be speficied when calling kthread_create. Passing the value 0 prevents the alternate kstack from being created. Note that the ia64 MD code is missing for now, and PowerPC was only partially written due to the pmap.c being incomplete there. Though this patch does not modify anything to make use of the alternate kstack, acpi and usb are good candidates. Reviewed by: jake, peter, jhb
2002-10-02 07:44:29 +00:00
int flags, int pages, const char *, ...) __printflike(6, 7);
Remove __P
2002-03-19 20:18:42 +00:00
void kthread_exit(int) __dead2;
int kthread_resume(struct proc *); /* XXXKSE */
int kthread_suspend(struct proc *, int); /* XXXKSE */
void kthread_suspend_check(struct proc *); /* XXXKSE */
Introduce a mechanism to suspend/resume system processes. Suspend syncer and bufdaemon prior to disk sync during system shutdown.
2000-01-07 08:36:44 +00:00
Include <sys/cdefs.h> so that this file is self-sufficient. Protect hand-formatted comments from indent(1). Don't bogusly forward- declare `struct proc'. Fixed some other style bugs.
2001-02-15 11:35:55 +00:00
#endif /* !_SYS_KTHREAD_H_ */
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