The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/kthread.h

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    1 /*      $NetBSD: kthread.h,v 1.14 2020/08/01 02:04:55 riastradh Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 1998, 2007, 2009 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center, and by Andrew Doran.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #ifndef _SYS_KTHREAD_H_
   34 #define _SYS_KTHREAD_H_
   35 
   36 #if !defined(_KERNEL)
   37 #error "not supposed to be exposed to userland"
   38 #endif
   39 
   40 /*
   41  * Kernel thread handling.
   42  */
   43 
   44 #include <sys/proc.h>
   45 
   46 #define KTHREAD_IDLE            0x01    /* Do not run on creation */
   47 #define KTHREAD_MPSAFE          0x02    /* Do not acquire kernel_lock */
   48 #define KTHREAD_INTR            0x04    /* Software interrupt handler */
   49 #define KTHREAD_TS              0x08    /* Time-sharing priority range */
   50 #define KTHREAD_MUSTJOIN        0x10    /* Must join on exit */
   51 
   52 void    kthread_sysinit(void);
   53 
   54 int     kthread_create(pri_t, int, struct cpu_info *,
   55     void (*)(void *), void *, lwp_t **, const char *, ...) __printflike(7, 8);
   56 void    kthread_exit(int) __dead;
   57 int     kthread_join(lwp_t *);
   58 
   59 int     kthread_fpu_enter(void);
   60 void    kthread_fpu_exit(int);
   61 
   62 /* Internal MD routines -- for use only by kthread_fpu_enter/exit.  */
   63 void    kthread_fpu_enter_md(void);
   64 void    kthread_fpu_exit_md(void);
   65 
   66 #endif /* _SYS_KTHREAD_H_ */

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